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Overview27Overload Relays

Combinations ofoverload relays and contactors

4/2 Siemens NS K · 2000

27Overload Relays

Contactors

Current rangeA

Thermally delayed overload relays CLASS 103RU1116 0.1 to 12

3RU1126 1..8 to 25

3RU1136 5.5 to 50

3RU1146 18 to 100

Solid-state overload relays CLASS 10 and 203RB1016 0.1 to 12

3RB1026 0.1 to 25 1)

3RB1036 6 to 50

3RB1046 13 to 100

Thermally delayed overload relays CLASS 103UA60 55 to 135

3UA61 55 to 150

3UA62 55 to 205

3UA66 80 to 400

Solid-state overload relays from CLASS 5 to 30, selectable3RB1246 0.25 to 100 4) 4) 4) 4)

3RB1253 50 to 205

3RB1257 125 to 500

3RB1262 200 to 820

Thermistor motor protection device3RN10 PTCs - Type A

Combination possible

3RT10 1Size S003/4/5.5 kW

3RT10 2Size S05.5/7.5/11 kW

3RT10 3Size S215/18.5/22 kW

3RT10 4Size S330/37/45 kW

SIRIUS 3R

27Overload Relays

4/3Siemens NS K · 2000

OverviewCombinations of

overload relays and contactors

1) Tripping class, CLASS 20 from 3 to 25 A.2) From setting range 135 to 180 A, installation as a single unit is required (heat dissipation).3) Installation only possible as a single unit4) 3RB12 with bar-type transformer, installation only possible as a single unit.

/—

—/ 2)2)

3) 3) 3)

/—

—/

3TF50/51Size 655/75 kW

3TF52/53Size 890/110 kW

3TF54/55Size 10132/160 kW

3TF56/57Size 12200/250 kW

3TF68/69Size 14375/450 kW

SIRIUS 3R

3RU11 Thermally Delayed Overload Relays


up to 100 A · CLASS 10

Selection and ordering data 3RU11 Thermally Delayed Overload Relays

Screw or Cage Clamp connection1), for mounting onto contactor or for installing as a single unit with adapter(adapter for installing as a single unit see Accessories)3RU11 overload relays with screw or Cage Clamp con-nection (for auxiliary conductors)• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator

• STOP button• Test function• Phase failure sensitivity• Integrated sealable cover• CLASS 10

For 3RT1 contactor or soft starter 3RW3

Output of 4-pole 3-phase motors

Current setting range

Fuse3)gL/gG

Overload relays with screw connection

Overload relays with Cage Clamp connection

.

Order No. Price Order No. Price Weight approx

Size2)

at AC 50 Hz 400 VPnkW A A Preferred type 1 unit 1 unit kg

Size S00 with terminal for contactor coil and auxiliary contact3RU11 16- ..B0 S00 0.11 to 0.16 0.5 3RU11 16-0AB0 - - 0..12

0.14 to 0.2 1 3RU11 16-0BB0 - -0.06 0.18 to 0.25 1 3RU11 16-0CB0 - -0.09 0.22 to 0.32 1.6 3RU11 16-0DB0 - -

0.28 to 0.4 2 3RU11 16-0EB0 - - 0.120.12 0.35 to 0.5 2 3RU11 16-0FB0 - -0.18 0.45 to 0.63 2 3RU11 16-0GB0 - -

0.55 to 0.8 4 3RU11 16-0HB0 - -

0.25 0.7 to 1 4 3RU11 16-0JB0 - - 0.120.37 0.9 to 1.25 4 3RU11 16-0KB0 - -0.55 1.1 to 1.6 6 3RU11 16-1AB0 - -

1.4 to 2 6 3RU11 16-1BB0 - -

0.75 1.8 to 2.5 10 3RU11 16-1CB0 - - 0.121.1 2.2 to 3.2 10 3RU11 16-1DB0 - -1.5 2.8 to 4 16 3RU11 16-1EB0 - -

3.5 to 5 20 3RU11 16-1FB0 - -

2.2 4.5 to 6.3 20 3RU11 16-1GB0 - - 0.123 5.5 toto 8 25 3RU11 16-1HB0 - -4 7 to 10 35 3RU11 16-1JB0 - -5.5 9 to 12 35 3RU11 16-1KB0 - -

Size S03RU11 26- ..D0 S0 0.75 1.8 to 2.5 10 3RU11 26-1CB0 3RU11 26-1CD0 0.16

1.1 2.2 to 3.2 10 3RU11 26-1DB0 3RU11 26-1DD01.5 2.8 to 4 16 3RU11 26-1EB0 3RU11 26-1ED0

3.5 to 5 20 3RU11 26-1FB0 3RU11 26-1FD0

2.2 4.5 to 6.3 20 3RU11 26-1GB0 3RU11 26-1GD0 0.163 5.5 to 8 25 3RU11 26-1HB0 3RU11 26-1HD04 7 to 10 35 3RU11 26-1JB0 3RU11 26-1JD05.5 9 to 12.5 35 3RU11 26-1KB0 3RU11 26-1KD0

7.5 11 to 16 40 3RU11 26-4AB0 3RU11 26-4AD0 0.1614 to 20 50 3RU11 26-4BB0 3RU11 26-4BD017 to 22 63 3RU11 26-4CB0 3RU11 26-4CD0

11 20 to 25 63 3RU11 26-4DB0 3RU11 26-4DD0

Size S23RU11 36- ..B0 S2 3 5.5 to 8 25 3RU11 36-1HB0 3RU11 36-1HD0 0.3

4 7 to 10 35 3RU11 36-1JB0 3RU11 36-1JD05.5 9 to 12.5 35 3RU11 36-1KB0 3RU11 36-1KD0

7.5 11 to 16 40 3RU11 36-4AB0 3RU11 36-4AD0 0.314 to 20 50 3RU11 36-4BB0 3RU11 36-4BD0

11 18 to 25 63 3RU11 36-4DB0 3RU11 36-4DD015 22 to 32 80 3RU11 36-4EB0 3RU11 36-4ED0

18.5 28 to 40 80 3RU11 36-4FB0 3RU11 36-4FD0 0.336 to 45 100 3RU11 36-4GB0 3RU11 36-4GD0

22 40 to 50 100 3RU11 36-4HB0 3RU11 36-4HD0

Size S33RU11 46- ..D0 S3 11 18 to 25 63 3RU11 46-4DB0 3RU11 46-4DD0 0.5

15 22 to 32 80 3RU11 46-4EB0 3RU11 46-4ED0

18.5 28 to 40 80 3RU11 46-4FB0 3RU11 46-4FD0 0.536 to 50 125 3RU11 46-4HB0 3RU11 46-4HD0

30 45 to 63 125 3RU11 46-4JB0 3RU11 46-4JD037 57 to 75 160 3RU11 46-4KB0 3RU11 46-4KD0

70 to 90 160 3RU11 46-4LB0 3RU11 46-4LD0 0.545 80 to 1004) 200 3RU11 46-4MB0 3RU11 46-4MD0

1) See page 6 for notes on Cage Clamp connection.2) Consider the maximum rated operational current of contactors.

3) Max. fuse for overload relay only, type of coordination “2”. Fuse values for mounting onto contactor see from page 4/10.

4) Thermally delayed overload relays > 100 A see page 4/31.

SIRIUS 3R




Selection and ordering data

Screw or Cage Clamp connection1), for installing as a single unit 3RU11 overload relays with mounted adapter for installing as a single unitScrew and snap-on mounting onto 35 mm standard mounting rail Size S3 also for 75 mm standard mounting rail 3RU11 overload relays with screw or Cage Clamp con-nection (for auxiliary conductors)• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator

• Test function, STOP button• Phase failure sensitivity• Integrated sealable cover• CLASS 10

For 3RT1 contactor or soft starter3RW3

Output of 4-pole3-phase motors

Current setting range

Fuse3)gL/gG

Overload relays with screw connection

Overload relays with Cage Clamp connection

Order No. Price Order No. Price Weightapprox.

Size2)

at 50 Hz 400 V ACPnkW A A Preferred type 1 unit 1 unit kg

Size S003RU11 16-..C1 S00 0.11 to 0.16 0.5 3RU11 16-0AB1 3RU11 16-0AC1 0.16

0.14 to 0.2 1 3RU11 16-0BB1 3RU11 16-0BC10.06 0.18 to 0.25 1 3RU11 16-0CB1 3RU11 16-0CC10.09 0.22 to 0.32 1.6 3RU11 16-0DB1 3RU11 16-0DC1

0.28 to 0.4 2 3RU11 16-0EB1 3RU11 16-0EC1 0.160.12 0.35 to 0.5 2 3RU11 16-0FB1 3RU11 16-0FC10.18 0.45 to 0.63 2 3RU11 16-0GB1 3RU11 16-0GC1

0.55 to 0.8 4 3RU11 16-0HB1 3RU11 16-0HC1

0.25 0.7 to 1 4 3RU11 16-0JB1 3RU11 16-0JC1 0.160.37 0.9 to 1.25 4 3RU11 16-0KB1 3RU11 16-0KC10.55 1.1 to 1.6 6 3RU11 16-1AB1 3RU11 16-1AC1

1.4 to 2 6 3RU11 16-1BB1 3RU11 16-1BC1

0.75 1.8 to 2.5 10 3RU11 16-1CB1 3RU11 16-1CC1 0.161.1 2.2 to 3.2 10 3RU11 16-1DB1 3RU11 16-1DC11.5 2.8 to 4 16 3RU11 16-1EB1 3RU11 16-1EC1

3.5 to 5 20 3RU11 16-1FB1 3RU11 16-1FC1

2.2 4.5 to 6.3 20 3RU11 16-1GB1 3RU11 16-1GC1 0.163 5.5 to 8 25 3RU11 16-1HB1 3RU11 16-1HC14 7 to 10 35 3RU11 16-1JB1 3RU11 16-1JC15.5 9 to 12 35 3RU11 16-1KB1 3RU11 16-1KC1

Size S03RU11 26-4.B1 S0 7.5 11 to 16 40 3RU11 26-4AB1 - 0.21

14 to 20 50 3RU11 26-4BB1 -17 to 22 63 3RU11 26-4CB1 -

11 20 to 25 63 3RU11 26-4DB1 -

Size S23RU11 36-4.B1 S2 15 22 to 32 80 3RU11 36-4EB1 - 0.45

18.5 28 to 40 80 3RU11 36-4FB1 -36 to 45 100 3RU11 36-4GB1 -

22 40 to 50 100 3RU11 36-4HB1 -

Size S33RU11 46-4.B1 S3 30 45 to 63 125 3RU11 46-4JB1 - 0.73

37 57 to 75 160 3RU11 46-4KB1 -70 to 90 160 3RU11 46-4LB1 -

45 80 to 1004) 200 3RU11 46-4MB1 -

1) See page 6 for notes on Cage Clamp connection.2) Consider the maximum rated operational current of contactors.

3) Max. fuse for overload relay only, type of coordination “2”. Fuse values for mounting onto contactor see from page 4/10.

4) Thermally delayed overload relays > 100 A see page 4/31.

SIRIUS 3R

up to 100 A · CLASS 10 3RU11 Thermally Delayed Overload Relays

Accessories


Design For type Order No. Price Weight approx.

Pack.

Size 1 unit kg unit

Adapter for installing as a single unit3RU19 .6-3AA01 For separate mounting of overload relays, S00 3RU19 16-3AA01 0.04 1

Screw and snap-on mounting onto S0 3RU19 26-3AA01 0.0635 mm standard mounting rail S2 3RU19 36-3AA01 0.15Size S3 also for 75 mm standard mounting rail S3 3RU19 46-3AA01 0.23

Mechanical RESET3RU19 00-1A

with pushbutton,holder and indicator label

Resetting plunger, holder and funnel S00 to S3 3RU19 00-1A 0.02 1 set

Suitable pushbutton IP 65 ∅ 22 mm 3SB10 00-0AH01 0.01 10Holder for pushbutton 3SB19 02-1AC 0.02 100 Indicator label with inscription RESET 3SB19 01-4EM 20

Cable release with support for RESET3RU19 00-1. (a bore of 6.5 mm dia. is required Length 400 mm S00 to S3 3RU19 00-1B 0.07 1 set

in the switchboard, Length 600 mm 3RU19 00-1Cmax. switchboard thickness 8 mm)

Module for remote RESET, electrical3RU19 00-2A.71 Operating range 0.85 to 1.1 x Us S00 to S3

Power consumption AC 120 VA, DC 70 WON period 0.2 s to 4 sAC/DC 24 V to 30 V 3RU19 00-2AB71 0.06 1AC/DC 110 V to 127 V 3RU19 00-2AF71AC/DC 220 V to 250 V 3RU19 00-2AM71

CoverCover for cable lug and busbar connection S3 3RT19 46-4EA1 1

Cover for box terminals S2 3RT19 36-4EA2 1S3 3RT19 46-4EA2 1

SIRIUS 3R



up to 100 A · CLASS 10Technical data according to

IEC 60 947-4-1 and IEC 60 947-5-1

1) Terminal department: degree of protection IP 00.2) See selection and ordering data from page 4/4.3) See page 4/10 and page 4/11.

Type 3RU11 16-.... 3RU11 26-.... 3RU11 36-.... 3RU11 46-....

Size S00 S0 S2 S3

Trip class acc. to IEC 60 947-4-1 CLASS 10

Phase failure sensitivity yes

Increased safety EEx e KEMA test certificate No.EX-97.Y.3235DMT 98 ATEX G001

Adjustable to automatic reset yes

RESET button with trip-free feature yes

Permissible ambient temperature(above +60 °C current reduction)

Storage/transport °C –55 to +80–20 to +70operation °C

Permissible rated current at• temperature inside cubicle 60 °C % 100• temperature inside cubicle 70 °C % 87

Temperature compensation °C up to 60

Switch position indicator yesTest function yesSTOP button yes

Terminal for contactor coil yes not requiredTerminal for contactor coil auxiliary contacts

yes not required

Degree of protection acc. to IEC 60 529/DIN VDE 0470 Part 1 IP 20 IP 201)

Shock-hazard protection acc. to DIN VDE 0106 Part 100 Safe from finger touch

Shock resistance with sine acc. to IEC 60 068 Part 2-27 g/ms 8/10

Main circuitRated insulation voltage Ui (pollution degree 3) V 690 1000

Rated impulse withstand voltage Uimp kV 6 8

Type of current DC, AC

Current setting A 0.11– 0.16up to 9 – 12

1.8 – 2.5up to 20 – 25

5..5 – 8up to 40 – 50

18 – 25up to 80 – 100

Power losses per unit (max.) W 3.9 to 6.6 3.9 to 6 6 to 9 10 to 16.5

Short-circuit protection with fuses overload relays alonetogether with contactor

2)3)

Conductor cross-section main circuit• Type of connection Screw connection Box terminal

• Terminal screw Pozidriv size 2 Pozidriv size 2 4 mmAllen screw

• Conductor cross-sections solid mm2 2 x (0.5 to 1..5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 16)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) – –

stranded mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 25) 2 x (10 to 50)

mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 35) 1 x (10 to 70)

finely stranded with end sleeve mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 35)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 25) 1 x (2.5 to 50)

AWG conductor connections AWG 2 x (18 to 14) 2 x (14 to 10) 2 x (18 to 3) 2 x (10 to 1/0)solid or stranded AWG – – 1 x (18 to 2) 2 x (10 to 2/0)

• Removable box terminal busbar connection mm – – – 18 x 10

• with cable lug connection mm2 – – – to 2 x 70

SIRIUS 3R



up to 100 A · CLASS 10 Technical data according toIEC 60 947-4-1 and IEC 60 947-5-1

1) Up to IK ≤ 0.5 kA; ≤ 260 V.2) See page 6 for notes on Cage Clamp connection.3) Not acc. to IEC.

Type 3RU11 16-.... 3RU11 26-.... 3RU11 36-.... 3RU11 46-....

Size S00 S0 S2 S3

Auxiliary circuitAuxiliary contacts 1 NO + 1 NC

Contact rating

NC at AC, AC-14/AC-15 Rated operational current Ie at Ue:• 24 V A 4• 230 V A 3• 400 V A 1.5• 600 A 0.6

NO at AC, AC-14/AC-15 Rated operational current Ie at Ue:• 24 V A 3• 230 V A 2• 400 V A 1• 600 A 0.6

NC, NO at DC, DC-13 Rated operational current Ie at Ue:• 24 V A 1• 110 V A 0,15• 220 V A 0.1

Conventional thermal current Ith A 6

Contact reliability(suitability for PLC control; 17 V, 5 mA)

yes

Short-circuit protectionFuse links Utilization category gL/gG A 6

fast A 10Miniature circuit-breakers, C-characteris-tics

A 61)

Rated insulation voltage Ui (pollution degree 3) V 690

Rated impulse withstand voltage Uimp kV 6

Conductor cross-sections of auxiliary circuit

Type of connection Screw connection Cage Clamp connection2)

Terminal screw Pozidriv size 2 –

Min./max. conductor cross-sections solid mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5) 2 x (0.5 to 2.5)stranded mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5) 2 x (0.5 to 2.5)

finely stranded with end sleeve mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5) 2 x (0.5 to 1.5)

AWG cond. connect., solid or stranded AWG 2 x (18 to 14) 2 x (18 to 14)

Adapter for installing as a single unit

for screw and snap-on mounting onto 35 mm standard mounting rail,Size S3 also for 75 mm standard mounting rail

Type 3RU19 16-3AA01

3RU19 26-3AA01

3RU19 36-3AA01

3RU19 46-3AA01

For overload relays 3RU11 16-.... 3RU11 26-.... 3RU11 36-.... 3RU11 46-....

Conductor cross-sections of main circuitType of connection Screw connection Box terminal

Terminal screw Pozidriv size 2 Pozidriv size 2 Pozidriv size 2 4 mmAllen screw

Minimum/maximum conductorcross-sections

finely stranded with end 1 concuctor mm2 0.5 to 2.5 1 to 6 0.75 to 25 2.5 to 50sleeve solid or stranded 1 conductor mm2 0.5 to 43) 1 to 6 0.75 to 35 2.5 to 70AWG conductor connections, solid or stranded 1 x AWG 18 to 14 14 to 10 18 to 2 10 to 1/0

s-, u-, U-Ratings

Auxiliary circuit Switching capacity B600. R300

SIRIUS 3R




Selection guide

Contactor assemblies for star-delta starting

Rated motor Current setting range Overload relay Line and Star contactor Wiring current (The overload

relays must be setto 0.58 timesthe rated motor current)

delta contactor assembly kit

A A Type Type Type Type

Size S001.9 to 2.82.4 to 3.43.1 to 4.3

1.1 to 1.61.4 to 21.8 to 2.5

3RU11 16-1AB03RU11 16-1BB03RU11 16-1CB0

3RT10 153RT10 153RT10 15

3RT10 153RT10 153RT10 15

3RA19 13-2B3RA19 13-2B3RA19 13-2B

3.8 to 5.54.8 to 6.96 to 8.67.8 to 10.9

2.2 to 3.22.8 to 43.5 to 54.5 to 6.3

3RU11 16-1DB03RU11 16-1EB03RU11 16-1FB03RU11 16-1GB0

3RT10 153RT10 153RT10 153RT10 15

3RT10 153RT10 153RT10 153RT10 15

3RA19 13-2B3RA19 13-2B3RA19 13-2B3RA19 13-2B

9.5 to 13.812.1 to 17.215.5 to 21

5.5 to 87 to 109 to 12

3RU11 16-1HB03RU11 16-1JB03RU11 16-1KB0

3RT10 163RT10 173RT10 17

3RT10 153RT10 153RT10 15

3RA19 13-2B3RA19 13-2B3RA19 13-2B

Size S03.1 to 4.33.8 to 5.54.8 to 6.9

1.8 to 2.52.2 to 3.22.8 to 4

3RU11 26-1CB03RU11 26-1DB03RU11 26-1EB0

3RT10 243RT10 243RT10 24

3RT10 243RT10 243RT10 24

3RA19 23-2B3RA19 23-2B3RA19 23-2B

6 to 8.67.8 to 10.99.5 to 13.8

3.5 to 54.5 to 6.35.5 to 8

3RU11 26-1FB03RU11 26-1GB03RU11 26-1HB0

3RT10 243RT10 243RT10 24

3RT10 243RT10 243RT10 24

3RA19 23-2B3RA19 23-2B3RA19 23-2B

12.1 to 17.215.5 to 21.519 to 27.6

7 to 109 to 12.5

11 to 16

3RU11 26-1JB03RU11 26-1KB03RU11 26-4AB0

3RT10 243RT10 243RT10 25

3RT10 243RT10 243RT10 24

3RA19 23-2B3RA19 23-2B3RA19 23-2B

24.1 to 3429.3 to 37.934.5 to 43

14 to 2017 to 2220 to 25

3RU11 26-4BB03RU11 26-4CB03RU11 26-4DB0

3RT10 263RT10 263RT10 26

3RT10 253RT10 253RT10 25

3RA19 23-2B3RA19 23-2B3RA19 23-2B

Size S29.5 to 13.8

12.1 to 17.215.5 to 21.5

5.5 to 87 to 109 to 12.5

3RU11 36-1HB03RU11 36-1JB03RU11 36-1KB0

3RT10 343RT10 343RT10 34

3RT10 343RT10 343RT10 34

3RA19 33-2B3RA19 33-2B3RA19 33-2B

19 to 27.624.1 to 3431 to 4337.9 to 55.2

11 to 1614 to 2018 to 2522 to 32

3RU11 36-4AB03RU11 36-4BB03RU11 36-4DB03RU11 36-4EB0

3RT10 343RT10 343RT10 343RT10 34

3RT10 343RT10 343RT10 343RT10 34

3RA19 33-2B3RA19 33-2B3RA19 33-2B3RA19 33-2B

48.3 to 6962.1 to 77.669 to 86.2

28 to 4036 to 4540 to 50

3RU11 36-4FB03RU11 36-4GB03RU11 36-4HB0

3RT10 353RT10 363RT10 36

3RT10 343RT10 343RT10 34

3RA19 33-2B3RA19 33-2B3RA19 33-2B

Size S331 to 43.137.9 to 55.248.3 to 69

18 to 2522 to 3228 to 40

3RU11 46-4DB03RU11 46-4EB03RU11 46-4FB0

3RT10 443RT10 443RT10 44

3RT10 443RT10 443RT10 44

3RA19 43-2B3RA19 43-2B3RA19 43-2B

62.1 to 77.66 to 108.6

36 to 4545 to 63

3RU11 46-4HB03RU11 46-4JB0

3RT10 443RT10 44

3RT10 443RT10 44

3RA19 43-2B3RA19 43-2B

98.3 to 129.3120.7 to 155.2137.9 to 172.4

57 to 7570 to 9080 to 100

3RU11 46-4KB03RU11 46-4LB03RU11 46-4MB0

3RT10 453RT10 463RT10 46

3RT10 443RT10 443RT10 44

3RA19 43-2B3RA19 43-2B3RA19 43-2B

SIRIUS 3R



CLASS 10

Technical data

Short-circuit protection with fuses for motor feeders with short-circuit currents up to 70 kA at AC 50/60 Hz 690 VPermissible short-circuit fuses for motor starters comprising overload relay and contactor, type of coordination “2”

Type of coordination “1” see short-circuit protection of contactors, Part 3.

Size S00 UL-fuse

RK5

Circuit-breaker for starter protection at

Iq = 50 kA / AC 400 VCurrent setting range 3 kW 3RT10 15

Ie max = 7 A(at AC 50 Hz 400 V)

4 kW 3RT10 16Ie max = 9 A(at AC 50 Hz 400 V)

5.5 kW 3RT10 17Ie max = 12 A(at AC 50 Hz 400 V)

A gL/gG aM BS88T gL/gG aM BS88T gL/gG aM BS88T A

0.11 to 0.16 0.5 – – 0.5 – – 0.5 – – 1 –

0.14 to 0.2 1 – – 1 – – 1 – – 1 3RV1321-0BC10

0.18 to 0.25 1 – – 1 – – 1 – – 1 3RV1321-0CC10

0.22 to 0.32 1.6 – 2 1.6 – 2 1.6 – 2 1 3RV1321-0DC10

0.28 to 0.4 2 – 2 2 – 2 2 – 2 1.6 3RV1321-0EC10

0.35 to 0.5 2 – 2 2 – 2 2 – 2 2 3RV1321-0FC10

0.45 to 0.63 2 – 4 2 – 4 2 – 4 2.5 3RV1321-0GC10

0.55 to 0.8 4 – 4 4 – 4 4 – 4 3 3RV1321-0HC10

0.7 to 1 4 – 6 4 – 6 4 – 6 4 3RV1321-0JC10

0.9 to 1.25 4 – 6 4 – 6 4 – 6 5 3RV1321-0KC10

1.1 to 1.6 6 – 10 6 – 10 6 – 10 6 3RV1321-1AC10

1.4 to 2 6 – 10 6 – 10 6 – 10 8 3RV1321-1BC10

1.8 to 2.5 10 – 10 10 – 10 10 – 10 10 –

2.2 to 3.2 10 – 16 10 – 16 10 – 16 12 –

2.8 to 4 16 – 16 16 – 16 16 – 16 16 –

3.5 to 5 20 6 20 20 6 20 20 6 20 20 –

4.5 to 6.3 20 6 20 20 6 20 20 6 20 25 –

5.5 to 8 20 10 20 20 10 20 20 10 20 30 –

7 to 10 20 16 20 20 16 20 40 –

9 to 12 20 16 20 45 –

Size S0 UL-fuse

RK5


Iq = 50 kA / AC 400 VCurrent setting range 5.5 kW 3RT10 24





1.8 to 2.5 10 – 10 10 – 10 10 – 10 10 3RV1321-1CC10

2.2 to 3.2 10 – 16 10 – 16 10 – 16 12 3RV1321-1DC10

2.8 to 4 16 – 16 16 – 16 16 – 16 16 3RV1321-1EC10

3.5 to 5 20 6 20 20 6 20 20 6 20 20 3RV1321-1FC10

4.5 to 6.3 20 6 25 20 6 25 20 6 25 25 3RV1321-1GC10

5.5 to 8 25 10 25 25 10 25 25 10 25 30 3RV1321-1HC10

7 to 10 25 16 25 25 16 25 32 16 35 40 3RV1321-1JC10

9 to 12.5 25 20 25 25 20 25 35 20 35 45 3RV1321-1KC10

11 to 16 25 20 25 25 20 25 35 20 35 60 3RV1321-4AC10

14 to 20 25 20 25 35 20 35 80 3RV1321-4BC10

17 to 22 35 20 35 80 3RV1321-4CC10

20 to 25 35 20 35 100

SIRIUS 3R



CLASS 10

Technical data

Short-circuit protection with fuses for motor feeders with short-circuit currents up to 70 kA at AC 50/60 Hz 690 VPermissible short-circuit fuses for motor starters comprising overload relays and contactor, type of coordination „2”

Type of coordination “1” see short-circuit protection of contactors, Part 3.

Size S2 UL-fuse

RK5


Iq = 50 kA / AC 400 VCurrent setting range 15 kW 3RT10 34





5.5 to 8 25 10 25 25 10 25 25 10 25 30 –

7 to 10 32 16 32 32 16 32 32 16 32 40 –

9 to 12.5 35 16 35 35 16 35 35 16 35 50 –

11 to 16 40 20 40 40 20 40 40 20 40 60 –

14 to 20 50 25 50 50 25 50 50 25 50 80 –

18 to 25 63 32 63 63 32 63 63 32 63 100 3RV1331-4DC10

22 to 32 63 35 63 63 35 63 80 35 80 125 3RV1331-4EC10

28 to 40 63 50 63 63 50 63 80 50 80 150 3RV1331-4FC10

36 to 45 63 50 63 80 50 80 175 3RV1331-4GC10

40 to 50 80 50 80 200 3RV1331-4HC10

Size S3 UL-fuse RK5


Iq = 50 kA/ AC 400 VCurrent setting range 30 kW 3RT10 44





18 to 25 63 32 63 63 32 63 63 32 63 100 –

22 to 32 80 35 80 80 35 80 80 35 80 125 –

28 to 40 80 50 80 80 50 80 80 50 80 150 –

36 to 50 125 50 125 125 50 125 125 50 125 200 –

45 to 63 125 63 125 160 63 160 160 63 160 250 3RV1341-4JC10

57 to 75 160 80 160 160 80 160 300 3RV1341-4KC10

70 to 90 160 100 160 350 3RV1341-4LC10

80 to 100 160 100 160 350 3RV1341-4MC10

SIRIUS 3R

CLASS 103RU11 Thermally Delayed Overload Relays


Description

Specifications

IEC 60 947-4-1, IEC 60 947-5-1 and DIN VDE 0660.

The 3RU11 overload relays are suitable for use in any climate.

The devices are shock-hazard-protected acc. to DIN VDE 0106 Part 100.

General

3RU11 overload relays belong to the new generation of SIRIUS 3R switching devices. They are available in four different sizes with up to 100 A.

The 3RU11 overload relays re-place the highly successful 3UA5 and 3UA7 devices. Out-standing features of the new re-lays include long-term stability and a long service life.The over-load relays are optimally matched, both electrically and mechanically, to the 3RT10 con-tactors and 3RW3 soft starter. They can, however, also be mounted separately with an adapter for installation as a sin-gle unit. Devices up to and in-cluding size S0 can be fitted on standard mounting rails without using tools.

3RU11 overload relays cannot be mounted on 3TF contactors.

Environment

The devices are manufactured using environmentally-compati-ble and recyclable materials only.

Application

3RU11 thermal overload relays provide overload protection for three-phase induction motors with rated currents of up to 100 A (45 kW, AC-3, 400 V).

Fuses or 3RV13 circuit-breakers for starter combinations (see Part 1) must be fitted for short-circuit protection.

Operation of frequency converters

The thermal overload relays 3RU11 are suitable for opera-tion on frequency converters.

1) See page 6 for notes on Cage Clamp connection.

Ambient conditionsThanks to the new bimetals used and continuous tempera-ture compensation, the devices can be implemented without re-strictions at an ambient temper-ature of up to 60 °C.

Auxiliary contactsThe overload relays are equipped with an NC contact for disconnecting the contactor and an NO contact for signalling tripping.The breaking capacity of the switching contacts is very high so that the contactor coils can be switched directly.

Trip classThe relays are designed in ac-cordance with trip class 10, i. e. they can be used for motor start-up times of up to 10 s.

Phase failure sensitivityA phase failure sensitivity func-tion is integrated in order to pro-vide overload protection in the event of a phase failure, i. e. premature tripping with double-phasing.

Setting theoverload relayThe current setting screw can be accessed once the transpar-ent, sealable cover has been re-moved. The overload relay must be set to the rated motor cur-rent.

STOP funktionActivating this function only af-fects the NC contact.

Overload relays 3RU11

a Equipment identifying markers Manual/automatic RESET selector switchd STOP buttonf Complete Order No. on front of deviceg Switch position indicator and TEST functionh Transparent cover, sealable,

secures the current setting screw,Test function and manual/automaticRESETposition

j Current setting screwk Terminal for contactor coil

(when mounted on contactor)l Terminal for auxiliary contacts

(when mounted on contactor)

a

s

d

f

Manual/automatic resetManual or automatic reset can be selected with the blue but-ton. The appropriate setting is selected by pressing and turn-ing the button and can be sealed.

Test function andswitch position indicatorThe switch position indicator also incorporates a test function which, when activated, simu-lates a tripped overload relay.Both auxiliary contacts are actu-ated and the switch positon is indicated.

Terminal for contactor coil and auxiliary contactWhen the 3RU11 16 overload re-lays (size S00) are mounted di-rectly on the contactor, the auxil-iary contact and coil terminals A2 of the contactor are fed through which considerably fa-cilitates wiring. This is not neces-sary with sizes S0 to S3 as the contactors are equipped with 4 coil terminals.

Cage Clamp connection1)As of now, 3RU11 overload re-lays are available with Cage Clamp terminals. S00 relays are fitted with Cage Clamp termi-nals on the main and auxiliary contacts and relay sizes S0 to S3 on the auxiliary contacts.

AccessoriesThe accessories available are suitable for use with all sizes.• Electrical remote RESET with

different voltage variants.• Mechanical remote RESET

comprising a tappet, funnel and holder for actuating the switchgear cabinet door with a 3SB1 pushbutton.

• Cable release for RESET for devices which are not easily accessible.

Overload protection of flame-proof motors of protection types “increased safety” EEx eEN 50 019/DIN VDE 0165, DIN VDE 0170/0171.KEMA – test certificate No.Ex-97.Y.3235 DMT 98 ATEX G001EN 50 019: 1977 + A1 ... A5, increased safety “e”:Appendix A, guidelines for tem-perature monitoring squirrel -cage motors in operation.

g

h

j

k

l

SIRIUS 3R



CLASS 10

Description

The current-time curves show the relatonship between the trip-ping time from cold state and multiples of the set current Ie. When the relay is at operating temperature and carrying 1.0 × Ie, the tripping times are reduced to approximately 25 %. For single-pole loads the trip-ping curves lie between the curves shown. For normal oper-ation, all 3 bimetallic strips of the overload relay must be heated.The 3RU11 overload relays are suitable for protecting motors with phase control.For protecting single-phase or DC-loads, all three main con-ducting paths must be con-nected in series. The release current with a 3-pole symmetri-cal load is between 105 % and 120 % of the set current.

Tripping characteristics

Trip classes of thermal, de-layed magnetic or solid-state overload relays – excerpt from IEC 60 947-4-1CLASS Tripping time tA

in secondsat 7.2 x Iefrom cold state

10 A 2 < tA ≤1010 4 < tA ≤1020 6 < tA ≤2030 9 < tA ≤30

Typical time-current characteristic

1 0

1 0 0

1 0 0 0

1 0 0 0 0

5 0 0 0

2 0 0 0

5 0 0

2 0 0

5 0

2 0

5

2

1

1

2

5

1 0

4 06 0

1 0 0

0 , 6 0 , 8 1 2 3 4 6 8 1 0 2 0 3 0 4 0 6 0 8 0 x I nA

m i ns

1 5

N S K - 7 5 2 2

T r i p p i n g t i m e

3 - p o l el o a d i n g

2 - p o l el o a d i n g

C u r r e n t

A

Internal circuit diagrams

Protection of DC motors

Single-pole 2-pole

3RU11 16 overload relays

3RU11 2 to 3RU11 4 overload relays

NS

K-7

60

0

4 62

1 3 5

NS

K-7

60

1

4 62

1 3 5

9 5

9 6

9 7

9 8 A 2 1 4 / 2 2

NSK-7515c

4 T 2 6 T 32 T 1

1 L 1 3 L 2 5 L 3

TEST

RESET

STOP

95

96

97

98 NS

K-7

59

9

4T2 6T32T1

1L1 3L2 5L3

TE

ST

RE

SE

T

ST

OP

SIRIUS 3R

3RB10 Solid-State Overload Relays


up to 100 A · CLASS 10 and CLASS 20

Selection and ordering data3RB10 Solid-State Overload Relays

Screw connection, for mounting onto contactors or for installing as a single unit with adapter(adapter for installing as a single unit see Accessories)3RB10 overload relays with• Self-supply• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator

• Test function, STOP button• Phase failure/Asymmetry sensitivity• CLASS 10

Installation as a single unit3RB10 with fitted adapter for installing as a single unit, for trip class CLASS 10

1) Consider the maximum rated operational current of the units.2) Thermally delayed overload relays > 100 A see page 4/19.

For contactoror


Current setting range Fuse2)gL/gG

Overload relaysOrder No. Price

Weightapprox.

soft starter

Size1)

at AC 50 Hz 400 VPnkW A

A

Preferred type 1 unit kg

CLASS 10, size S00 with terminal for contactor coil and auxiliary contacts S00 up to 0.09 0.1 to 0.4 2 3RB10 16-1RB0 0.210

0.12 to 0.55 0.4 to 1.6 6 3RB10 16-1NB00.55 to 2.2 1.5 to 6 20 3RB10 16-1PB01.1 to 5.5 3 to 12 35 3RB10 16-1SB0

CLASS 10, size S0 S0 up to 0.09 0.1 to 0.4 2 3RB10 26-1RB0 0.225

0.12 to 0.55 0.4 to 1.6 6 3RB10 26-1NB00.55 to 2.2 1.6 to 6 25 3RB10 26-1PB01.1 to 5.5 3 to 12 35 3RB10 26-1SB03 to 11 6 to 25 63 3RB10 26-1QB0

CLASS 10, size S2 S2 3 to 11 6 to 25 63 3RB10 36-1QB0

7.5 to 22 13 to 50 100 3RB10 36-1UB0

CLASS 10, size S3 S3 7.5 to 22 13 to 50 125 3RB10 46-1UB0

11 to 45 25 to 100 200 3RB10 46-1EB0

Size1) Output of 4-pole3-phase motors



Weightapprox.


A


CLASS 10, width 45 mmS00 0.1 to 0.4 2 3RB10 16-1RB1 0.210

0.4 to 1.6 6 3RB10 16-1NB11.5 to 6 20 3RB10 16-1PB13 to 12 35 3RB10 16-1SB1

S 0 6 to 25 63 3RB10 26-1QB1

CLASS 10, width 55 mm S 2 13 to 50 100 3RB10 36-1UB1

CLASS 10, width 70 mm S 3 25 to 100 200 3RB10 46-1EB1

SIRIUS 3R



up to 100 A · CLASS 10 and CLASS 20


Screw connection, for mounting onto contactors or for installing as a single unit with adapter(adapter for installing as a single unit see Accessories)3RB10 overload relays with• Self-supply• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator

• Test function, STOP button• Phase failure/Asymmetry sensitivity• CLASS 20

1) Consider the maximum rated operational current of the units.2) Thermally delayed overload relays > 100 A and see Page 4/19.

For contactoror




Weightapprox.

soft starter

Size1)


A


CLASS 20, size S00 with terminal for contactor coil and auxiliary contact S00 up to 0.09 0.1 to 0.4 2 3RB10 16-2RB0 0.210

0.12 to 0.55 0.4 to 1.6 6 3RB10 16-2NB00.55 to 2.2 1.5 to 6.0 20 3RB10 16-2PB01.1 to 5.5 3 to 12 35 3RB10 16-2SB0

CLASS 20, size S0 S0 1.1 btois 5.5 3 to 12 35 3RB10 26-2SB0 0.225

3 to 11 6 to 25 63 3RB10 26-2QB0

CLASS 20, size S2 S2 3 to 11 6 to 25 63 3RB10 36-2QB0

7.5 to 22 13 to 50 100 3RB10 36-2UB0

CLASS 20, size S3 S3 7.5 to 22 13 to 50 125 3RB10 46-2UB0

11 to 45 25 to 100 200 3RB10 46-2EB0

SIRIUS 3R

up to 100 A · CLASS 10 and CLASS 20 3RB10 Solid-State Overload Relays

Accessories



Pack.

Size Preferred type 1 unit kg unit

Adapter for installing as a single unit3RU19 .6-3AA01 For separate mounting of overload relays, S00 3RU19 16-3AA01 0.04 1

screw and snap-on mounting onto S0 3RU19 26-3AA01 0.0535 mm standard mounting rail S2 3RU19 36-3AA01 0.15Size S3 also for75 mm standard mounting rail

S3 3RU19 46-3AA01 0.23

Mechanical RESET3RU19 00-1A

with pushbutton,holder and indicator label

Resetting plunger, holder and funnel S0 to S3 3RU19 00-1A 0.02 1 setSuitable pushbutton IP 65 ∅ 22 mm 3SB10 00-0AH01 0.01 10 Holder for pushbutton 3SB19 02-1AC 0.02 100 Indicator label with inscription RESET 3SB19 01-4EM 20

Cable release with support for RESET3RU19 00-1B, -1C A bore of ∅ 6.5 mm is required Length 400 mm

in the switchboard S00 to S3 3RU19 00-1B 0.07 1 set

For a max. switchboard thickness Length 600 mmof 8 mm

3RU19 00-1C

Module for remote RESET, electrical3RU19 00-2A.71 Operating range 0.85 to 1.1 x Us

Power consumption AC 120 VA, DC 70 WON period 0.2 s to 2 s

AC/DC 24 V to 30 V S00 to S3 3RU19 00-2AB71 0.06 1AC/DC 110 V to 127 V 3RU19 00-2AF71AC/DC 220 V to 250 V 3RU19 00-2AM71

Sealable cover, transparentFor covering current-setting screwand for immobilization of the selector switch Manual/automatic RESET(bag of 10 covers)

S00 to S3 3RB19 00-3B 1 bag

SIRIUS 3R



up to 100 A · CLASS 10 and CLASS 20Technical data according to

IEC 60 947-4-1 and IEC 60 947-5-1

1) Connection area: degree of protection IP 00.2) 3 V/m for current setting range 0.1 to 0.4 A.3) See Selection and ordering data.4) See table on page 4/19.

Type 3RB10 16- 3RB10 26- 3RB10 36- 3RB10 46-

Size S00 S0 S2 S3

Trip class IEC 60 .947-4-1 CLASS 10 and 20, depending on version

Phase failure sensitivity Tripping from warm state s < 3

PTB Test Report (increased safety EEx e) 3.43-8803/98

Permissible ambient temperature storage/transport °C –55 to +80operation °C –20 to +70


Recovery time for automatic RESET min ca. 4for manual RESET sofort

Switch position indicator/Test function yes

RESET button yesSTOP button yes

Terminal for contactor coil yes not required

Terminal for auxiliary contacts yes not required

Degree of protection acc. to IEC 60 529/DIN VDE 0470 Part 1 IP 20 IP 201)

Shock-hazard protection acc. to DIN VDE 0106 Part 100 Safe from finger touch

Shock resistance with sine acc. toacc. to IEC 60 068 Part 2-27 g/ms 8/10 and 15 /11

Mounting position any

EMC immunity Conducted interference injectionBurst acc. to IEC 61 000-4-4: (corresponds to severity 3)

kV 2

Conducted interference injectionSurge acc. to IEC 61 000-4-5: (corresponds to severity 3)

kV 2

Electrostatic dischargeacc. to IEC 61 000-4-2: (corresponds to severity 3)

kV 8

Field-generated interference injectionacc. to IEC 61 000-4-3:(corresponds to severity 3)

V/m 6 10 2) 10

Resistance to extreme climates Humidity % 100

Main circuitRated insulation voltage Ui (pollution degree 3) V 690 1000

Rated impulse withstand voltage Uimp kV 6 8

Type of current AC

Frequency range 50/60 Hz ± 3

Current setting A 0.1– 0.4to 3 – 12

0.1– 0.4to 6 – 25

6 – 25to 13 – 50

13 – 50to 25 – 100

Own power consumption W (VA) approx. 0.05

Short-circuit protection with fuses Overload relays alone 3)

together with contactor 4)Conductor cross-sections for main circuit

• Type of connection Screw connection Box terminal

• Terminal screw Pozidriv size 2 Pozidriv size 2 Pozidriv size 2 4mmAllen screw

• Conductor cross-sections solid mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 16)mm2 2 x (0.75 to2.5) 2 x (2.5 to 6)

stranded mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 25) 2 x (10 to 50)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 35) 1 x (10 to 70)

finely stranded with end sleeve mm2 2 x (0.5 to 1.5) 2 x (1 to 2.5) 2 x (0.75 to 16) 2 x (2.5 to 35)mm2 2 x(0.75 to 2.5) 2 x (2.5 to 6) 1 x (0.75 to 25) 1 x (2.5 to 50)

AWG conductor connections AWG 2 x (18 to 14) 2 x (14 to 10) 2 x (18 to 3) 2 x (10 to 1/0)solid or stranded AWG – – 1 x (18 to 2) 2 x (10 to 2/0)

• Removable box terminal Busbar connection mm – – – 18 x 10

• With cable lug connection mm2 – – – to 2 x 70

SIRIUS 3R



up to 100 A · CLASS 10 and CLASS 20 Technical data according toIEC 60 947-4-1 and IEC 60 947-5-1

1) Up to IK ≤ 0,5 kA; ≤ 260 V.2) Not acc. to IEC.

Type 3RB10 16- 3RB10 26- 3RB10 36- 3RB10 46-

Size S00 S0 S2 S3

Auxiliary circuitAuxiliary contacts 1 NO + 1 NC

Contact ratingat AC-14/AC-15 Rated operational current Ie at Ue:

• 24 V A 4• 125 V A 4• 230 V A 3• 400 V A 2• 690 V A 1

at DC-13 Rated operational current Ie at Ue:• 24 V A 1• 110 V A 0.22• 220 V A 0.1

Contact reliability Contacts suitable for PLCs (17 V, 5 mA)

yes

Short-circuit protection

Fuse links Utilization category gL/gG A 6fast A 10

Miniature circuit-breaker C-characteristics (to lk <= 0.5 kA; <= 260 V) A 6 1)

Rated insulation voltage Ui (pollution degree 3) V 690

Rated impulse withstand volltage Uimp kV 6

Conductor cross-sections of auxiliary circuitType of connection Screw connection

Terminal screw Pozidriv size 2

Min./ max. conductor cross-sections finely stranded with end sleeve mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5)

solid or stranded mm2 2 x (0.5 to 1.5)/ 2 x (0.75 to 2.5)AWG conductor connections, AWG 2 x (18 to 14) solid or stranded

Adapter for installing as a single unit

For screw and snap-on mounting onto 35 mm standard mounting rail,size S3 also for 75 mm standard mounting rail

Type 3RU19 16-3AA01

3RU19 26-3AA01

3RU19 36-3AA01

3RU19 46-3AA01

Conductor cross-sections main circuit

Type of connection Screw connection Box terminalTerminal screw Pozidriv Pozidriv Pozidriv 4 mm

Allen screwMin./max. conductor cross-sections finely stranded with end sleeve mm2 1 x (0.5 to 2.5) 1 x (1 to 6) 1 x (0.75 to 25) 1 x (2.5 to 50)

Min./max. conductor cross-sections solid or stranded mm2 1 x (0.5 to 4 2) 1 x (1 to 6) 1 x (0.75 to 35) 1 x (2.5 to 70)

Min./max. conductor cross-sections AWG conductor connections,solid or stranded

mm2 1 x (18 to 14) 1 x (14 to 10) 1 x (18 to 2) 1 x (10 to 1/0)

s-, u-, U-ratings

Auxiliary circuit Switching capacity B600. R300

SIRIUS 3R



CLASS 10 and CLASS 20

Technical data

Short-circuit protection with fuses for motor feedersfor short-circuit currents up to 50 kA at 690 V

1) Mounting of contactor not possible, only installation as a single unit with individual wiring.2) Observe the operational voltage. 3) Coordination and short-circuit equipment according to IEC 60 947-4-1/DIN VDE 660 Part 102. Type of coordination “1”: The contactor or starter must not endanger persons or the installation

in the event of a short-circuit. They do not need to be suitable for further operation without repair and the renewal of parts.

Type of coordination “2”: The contactor or starter must not endanger persons or the installation in the event of a short-circuit and must be suitable for further use.There is a danger of contact welding.

Overload relays contactor CLASS Fuse links2)Current setting 5 and 10 20 NH Type 3NA NH Britishrange Rated operational current Ie DIAZED Type 5SB Type 3ND Standard UL-listed

fusesAC-3 in A bei NEOZED Type 5SE fuses

Utilization category gL/gGtype of coordination3)

aM BS88, Type T

CLASSR K5

Type Type 400V

500V

690V

400V

500V

690V

“1” “2” “2” “1” “2”

Size S000.1 A to 0.4 A 3RT10 15 0.4 0.4 0.4 0.4 0.4 0.4 25 2 25 2 1.63RB10 16

0.4 A to 1.6 A 3RT10 15 1.6 1.6 1.6 1.6 1.6 1.6 25 6 35 6 63RB10 16

1.5 A to 6 A 3RT10 15 6 5 4 6 5 4 35 20 35 20 253RB10 16 3RT10 17 6 6 6 6 6 6 35 20 35 20

3 A to 12 A 3RT10 17 12 9 6.3 10 6 3 35 20 35 20 453RB10 16

Size S00.1 A to 0.4 A 3RT10 24 0.4 0.4 0.4 63 2 63 2 1.60.4 A to 1.6 A 3RT10 24 1.6 1.6 1.6 63 6 63 6 61.5 A to 6 A 3RT10 24 6 6 6 63 25 20 63 25 253 A to 12 A 3RT10 24 12 12 12 12 12 12 63 25 20 63 25 453RB10 26

6 A to 25 A 3RT10 24 12 12 12 12 12 12 63 25 20 63 25 703RB10 26 3RT10 25 17 17 13 16 16 13 63 25 20 63 25 70

3RT10 26 25 18 13 16 16 13 100 35 20 63 35 100

Size S26 A to 25 A 3RT10 34 25 25 25 22 22 22 125 63 50 125 63 1003RB10 36 3RT10 35 25 25 25 25 25 25 125 63 50 125 63 100

13 A to 50 A 3RT10 34 32 32 31 22 22 22 125 63 50 125 63 1253RB10 36 3RT10 35 40 40 40 29 29 29 125 63 50 125 63 150

3RT10 36 50 50 40 33 33 33 160 80 50 125 80 200

Size S313 A to 50 A 3RT10 44 50 50 50 49 49 49 250 100 63 250 100 2003RB10 46 3RT10 45 50 50 50 50 50 50 250 100 80 250 100 200

25 A to 100 A 3RT10 44 65 65 57 49 49 49 250 125 63 250 125 2503RB10 46 3RT10 45 80 80 80 53 53 53 250 160 80 250 160 350

3RT10 46 95 95 95 59 59 59 250 160 100 250 160 350

3TF501) 100 100 100 76 76 76 250 200 125 250 160 1603TF511) 97 97 97 250 200 160 250 200 2003TF521) 100 100 100 250 200 200 250 200 250

SIRIUS 3RSIRIUS 3R

up to 100 A ·CLASS 10 and CLASS 203RB10 Solid-State Overload Relays


Description

SpecificationsIEC 60 947-4-1, IEC 60 947-5-1 and DIN VDE 0660.3RB10 overload relays are suit-able for use in any climate.The devices are shock-hazard-protected acc. to DIN VDE 0106, Part 100.

GeneralThe 3RB10 overload relays form part of the new SIRIUS 3R switchgear generation. The solid-state version of the SIRIUS 3R overload relay is noted for its extensive setting ranges (set-ting ratio 1:4), for the phase fail-ure protection function (see characteristic curves) and also for the minimal energy require-ment. In terms of dimensions and termination, the solid-state (3RB10) and the thermally de-layed types (3RU11) are 100 % compatible. These devices are particularly suitable where mo-tor protection requirements are high and for motor starting times up to 20 s (CLASS 20 version). A special coating of the printed-circuit board and of the elec-tronic components assures reli-able operation even in aggres-sive and tropical atmospheres. Four sizes and two variants are available up to 100 A. The over-load relays are optimally matched, both electrically and mechanically, to the 3RT10 con-tactors or 3RW3 soft starter. They can, however, also be mounted separately with an adapter for installation as a sin-gle unit. Devices up to and in-cluding size S0 can be fitted on standard mounting rails without using tools.

Application3RB10 solid-state overload re-lays provide overload protec-tion for three-phase induction motors with rated currents of up to 100 A (45 kW, AC-3, 400 V).For short-circuit protection with fuses or circuit-breakers, the fusing values of the contactors must be taken into account.

OperationThe solid-state overload relays have been developed for use in sinusoidal 50/60 Hz voltage net-works. No additional power sup-ply is required for operation. Current transformers (for mea-surement) are already inte-grated. An ASIC (application-specific integrated circuit) checks the current values of each phase and initiates re-lease in the event of overload or phase failure.The tripping current corre-sponds to 114 % of the set cur-rent.The overload relays must be set to the rated motor current.

Operation on frequencyconvertersThe 3RB10 solid-state overload relays are not suitable for the operation on frequency convert-ers. (Use thermal overload re-lays.)

Operation of single-phase motors

The 3RB10 solid-state overload relay is not suitable for the oper-ation of single-phase motors. Use the normal 3RU11 thermal overload relay instead.

Trip classesThe devices are available in CLASS 10 for normal starting (motor starting times up to 10 s) and in CLASS 20 for arduous startup conditions (motor start-ing times up to 20 s).

Phase failure protectionThe 3RB10 solid-state overload relays are equipped with phase-failure protection. If a phase fails, the device trips after only 3 s.

STOP functionActivating this function only af-fects the NC contact.

Manual/automatic resetManual or automatic reset can be selected with the blue but-ton. The appropriate setting is selected by pressing and turn-ing the button.

Bei Automatik-RESETsetzt das Überlastrelaisnach einer Wiederbere-itschaftszeit von 4 min

zurück. Rücksetzen perHand ist jederzeit

möglich.

Test function andswitch position indicatorThe switch position indicator also incorporates a test function which, when activated, simu-lates a tripped overload relay.Both auxiliary contacts are actu-ated and the switch position is indicated.

Terminal for contactor coil and auxiliary contactWhen the 3RB10 16 overload relay (size S00) is mounted di-rectly on the contactor, the aux-iliary contact and coil terminal A2 of the contactor are fed through which considerably fa-cilitates wiring. This is not nec-essary with sizes S0 as the con-tactors are equipped with 4 coil terminals.

Auxiliary contactsThe overload relays are equipped with an NC contact for disconnecting the contactor and an NO contact for signalling tripping.The breaking capacity of the switching contacts is very high so that the contactor coils can be switched directly.

Overload relays 3RB10

a Test function andswitch position indicator

s STOP buttond Manual/automatic RESET se-

lector switchf 1NO + 1NCg Trip classh Current setting screw,

setting ratio 1:4e. g. 3 to 12 A

a

sd

f

MountingThe overload relays are mounted directly on the 3RT10 contactors. If they are fitted indi-vidually on a connector base, they can be fastened by means of screws or placed on a mount-ing rail. The connector bases of the 3RU11 thermally delayed re-lays can be used.

AccessoriesThe accessories of the 3RU11 thermal overload relays can be used for the 3RB10 solid-state overload relays.• Electrical remote RESET with

different voltage variants.• Mechanical remote RESET

comprising a tappet, funnel and holder for actuating the switchgear cabinet door with 3SB1 pushbutton.

• Cable release for RESET for devices which are not easily accessible.

• Sealable cover.

PTB Test Report

The solid-state overload relay 3RB10 conforms to the specifica-tions for overload protection of explosion-protected motors with the “increased safety” type of protection EEx e EN 50 019/ DIN VDE 0165, DIN VDE 0170/171 and PTB testing rules.

PTB Test Report No. 3.43-8803/98

SIRIUS 3R



CLASS 10 and CLASS 20

Description

Circuit diagrams

3RB10 16 overload relays 3RB10 26 to 3RB10 46 overload relays

9 5

9 6

9 7

9 8 A 2 1 4 / 2 2

NSK-7515c

4 T 2 6 T 32 T 1

1 L 1 3 L 2 5 L 3

TEST

RESET

STOP

95

96

97

98 NS

K-7

59

9

4T2 6T32T1

1L1 3L2 5L3

TE

ST

RE

SE

T

ST

OP

Trip classes of thermal, de-layed magnetic or solid-state overload relays – excerpt from IEC 60 947-4-1CLASS Tripping time tA

in secondsat 7,2 x Iefrom cold state

CLASS 10 A 2 < tA ≤10CLASS 10 4 < tA ≤10CLASS 20 6 < tA ≤20CLASS 30 9 < tA ≤30

Time-current characteristic for CLASS 10

Time-current characteristic for CLASS 20

1 0

6

4

64

2

1 2 4 1 0 x I e

smin

N S K - 7 9 5 0 a

0 , 61

6

81 0

5 012

2 0

4 01

2

3

A

Tripping time

T r i p p i n g c u r r e n t ( a v e r a g e )

The time-current characteristics show the behavior at start with 3-pole loading :

In the event of phase failure or current unbalance, the phase failure protection function be-comes active. The overload re-lay trips after only 3 s.The characteristic curves of CLASS 10 and the behavior in operation are replicated from the 3RU overload relays.

Time-current characteristics

$ from cold state,% from warm state and& in the event of phase failure

or current unbalance ≥ 40 %

SIRIUS 3R

1 0

6

4

64

2

1 2 4 1 0 x I e

smin

N S K - 1 0 4 8

0 , 61

6

81 0

5 012

2 0

4 0

1

2

3

A

Tripping time




CLASS 5 to CLASS 30

Selection and ordering data3RB12 Solid-State Overload Relays

3RB2 solid-state overload relays • For trip classes 5/10/15/20/25/30, changeable• Input T1/T2 for thermistor sensors (PTCs) for full motor protection• Input C1/C2 for earth-fault detection with additional 3UL22 summation current transformer • Manual/automatic/remote RESET Y1/Y2, test functions• 2 outputs, 1 NO and 1 NC each• 3 LEDs for operation and status displays

1) The setting range from 0.25 A to 1.25 A is obtained by multiple winding of the main conducting paths.2) The internal earth-fault detection detects fault currents > 30% from the set current.

Current setting range Rated control Mountable contactors Overload relays Weightsupply voltage Order No. Price approx.

A Type 1 unit kg

3RB12 solid-state overload relays 3RB12 46 1.251) to 6.3 110 V to 120 V 50/60 Hz Installation as a single

unit3RB12 46-1PG@@ 0,60

220 V to 240 V 50/60 Hz 3RB12 46-1PM@@24 V DC 3RB12 46-1PB @@

6.3 to 25 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1QG@@ 0.60220 V to 240 V 50/60 Hz 3RB12 46-1QM@@24 V DC 3RB12 46-1QB @@

25 to 100 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1EG@@ 0.60220 V to 240 V 50/60 Hz 3RB12 46-1EM@@24 V DC 3RB12 46-1EB @@

3RB12 53 50 to 205 110 V to 120 V 50/60 Hz 3TF50 to 3TF52 3RB12 53-0FG@@ 1.0220 V to 240 V 50/60 Hz 3RB12 53-0FM@@24 V DC 3RB12 53-0FB @@

3RB12 57 125 to 500 110 V to 120 V 50/60 Hz 3TF53 to 3TF57 3RB12 57-0KG@@ 1.90220 V to 240 V 50/60 Hz 3RB12 57-0KM@@24 V DC 3RB12 57-0KB @@

3RB12 62 200 to 820 110 V to 120 V 50/60 Hz 3TF68. 3TF69 3RB12 62-0LG@@ 3.20220 V to 240 V 50/60 Hz 3RB12 62-0LM@@24 V DC 3RB12 62-0LB @@

Order No. supplement

Design Order No. supplement Additional price

3RB12 . .- . . .@@ Preferred type

Standard version1 NO + 1 NC 1 NO + 1 NC

• Overload/thermistor • Earth-fault RB12 . .- . . . 0 0• Overload/thermistor/

earth-fault • Overload warning 3RB12 . .- . . . 1 0

Version with internal earth-fault detection2)Same as standard version, but additionally with internal earth-fault detection,for 3-conductor networks only, not for single-phase motors, but suitable for star-delta switching.

1 NO + 1 NC 1 NO + 1 NC

• Overload/thermistor • Earth-fault 3RB12 . .- . . . 2 0• Overload/thermistor/


Bistable versionSame as standard version, but with the bistable output relay, no change in the switching state of the auxiliary contacts in the event of failure of the control supply voltage.

1 NO + 1 NC 1 NO + 1 NC

• Overload/thermistor • Earth-fault 3RB12 . .- . . . 0 1• Overload/thermistor/


SIRIUS 3R



CLASS 5 to CLASS 30


3RB12 solid-state overload relays with analog output,same as standard version 3RB12 . .- . . . 00, but additionally with analog output signal4 to 20 mA fot the motor current, referred to the set current value.• For measuring instruments with 4 to 20 mA input or for processing in control systems, e.g.

- moving coil indicator, front dimensions 96 mm x 96 mm, Order No. M01604-P9270 - changing scale 0 to 125 %, Order No. M01733-V0016-Z406. For other versions, see catalog MP12 B.

• Overload display up to 125 % of the set current (corresponds to 20 mA).• Motor current = current setting corresponds to 16.8 mA = 100 %.• Communication via ASi with analog module 3RK12 07-1BQ00-0AA3 possible.

1) The setting range from 0.25 A to 1.25 A is obtained by multiple winding of the main conducting paths.

Current setting range Rated Mountable contactors Overload relays Weightcontrol supply voltage Order No. Price approx.

A Type Preferred type 1 unit kg

3RB12 solid-state overload relays with analog output3RB12 46 1.251) up to 6.3 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1PG40 0.60

220 V to 240 V 50/60 Hz 3RB12 46-1PM4024 V DC 3RB12 46-1PB40

6.3 up to 25 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1QG40 0.60220 V to 240 V 50/60 Hz 3RB12 46-1QM4024 V DC 3RB12 46-1QB40

25 up to 100 110 V to 120 V 50/60 Hz Install. as a single unit 3RB12 46-1EG40 0.60220 V to 240 V 50/60 Hz 3RB12 46-1EM4024 V DC 3RB12 46-1EB40

3RB12 53 50 up to 205 110 V to 120 V 50/60 Hz 3TF50 to 3TF52 3RB12 53-0FG40 1.0220 V to 240 V 50/60 Hz 3RB12 53-0FM4024 V DC 3RB12 53-0FB40

3RB12 57 125 up to 500 110 V to 120 V 50/60 Hz 3TF53 to 3TF57 3RB12 57-0KG40 1.90220 V to 240 V 50/60 Hz 3RB12 57-0KM4024 V DC 3RB12 57-0KB40

3RB12 62 200 up to 820 110 V to 120 V 50/60 Hz 3TF68. 3TF69 3RB12 62-0LG40 3.20220 V to 240 V 50/60 Hz 3RB12 62-0LM4024 V DC 3RB12 62-0LB40

Accessories for 3RB12 overload relays

Window size Rated fault current In Order No. Price Weight

mm A 1 unit kg

Summation current transformer for external earth-fault detection40 0.3 3UL22 01-1A 0.35

0.5 3UL22 01-2A1 3UL22 01-3A

65 0.3 3UL22 02-1A 0.600.5 3UL22 02-2A1 3UL22 02-3A

120 0.3 3UL22 03-1A 2.500.5 3UL22 03-2A1 3UL22 03-3A

Direct voltage adapterFor operation of a 3RB12 with the control supply voltageof 24 V DC at DC voltages from 30 V to 120 V

7PX80 40-0A 0.30

SIRIUS 3R

CLASS 5 to CLASS 303RB12 Solid-State Overload Relays

Accessories



Pack.

1 unit kg Unit

Sealable cap3RB19 00-0A for current-setting knob and CLASS selector 3RB12 3RB19 00-0A 0.01 1

Push-in lugs3RB19 00-0B for screw mounting onto a mounting plate

2 items required per overload relays (1 set = 10 items).

3RB12 46 3RB19 00-0B 0.01 10

Terminal cover3TX7 506-0A • Terminal cover

for installation as a single unit or load-side when directly mounted

3RB12 53 3TX7 506-0A 0.01 10

3RB12 57 3TX7 536-0A 0.003 2

3RB12 62with 3TF68

3TX7 686-0A 0.17 2

3RB12 62with 3TF69

3TX7 696-0A 0.17 2

3TX7 506-0B • Terminal coverbetween contactor and overload relaywhen directly mounted

3RB12 53 3TX7 506-0B 0.01 10

3RB12 57 3TX7 536-0B 0.065 10

3RB12 62with 3TF68

3TX7 686-0B 0.065 10

3RB12 62with 3TF69

3TX7 696-0B 0.065 10

Base plate3UF19 00-0JA00 for snap-on mounting on 75 mm standard mounting rail 3RB12 53 3UF19 00-0JA00 0.2 1

SIRIUS 3R



CLASS 5 to CLASS 30

Technical data

Tripping In case of overload, phase failure and current unbalance ( >40% of the current setting Ie ) as well as with responding of the thermistor motor protection and in case of earth fault

Trip class Selectable; CLASS 5, 10, 15, 20, 25, 30

PTB Test Report (increased safety EExe Nr.:) 3.53-3907/96

Overload warning Above 1.15 x Ie with balanced loading; above 0.85 x Ie withunbalanced loading

Operation Combined TEST/RESET button with functional test; automatic and remote RESET possible; rotary knob of current setting Ie ; 6-step rotary switch for trip class (CLASS 5 to 30)

Display

green LED “Ready” Steady light ON; ready for operationOFF; no control supply voltage or functional test was negative (device is locked)

red LED “Overload” Steady light Overload tripping by current and/or thermistorFlashing light Overload warning

red LED “Ground Fault” Steady light Earth-fault

Permissible ambient/storage temperature –25 °C to +70 °C/–40 °C to +80 °C

Mounting altitude to 2000 m above sea level

Degree of protection (acc. to IEC 529) IP 20 (≤100 A max. setting current Ie ); IP 00 (>100 A max. current setting Ie )

Shock resistance (sine pulse) 15 g/11 ms

Type of construction Compact, i. e. the current transformers for all sizes are already inte-grated in the housing

DimensionsW x H x D mm x mm x mm

3RB12 46 (Ie ≤100 A): 70 x 85 x 132.5; 3RB12 53 (Ie ≤205 A): 120 x 145 x 155; 3RB12 57 (Ie ≤500 A): 145 x 160 x 175; 3RB12 62 (Ie ≤820 A): 230 x175 x190

Mounting position any

Fitting 3RB12 46; snap-on mounting on 35-mm-standard mounting rail or screw mounting with accessories3RB12 53; 3RB12 57; 3RB12 62: can be directly mounted on the contactor or screw mounting

EMC immunity Conducted interference injection, burst acc. to IEC 61 000-4-4: 2 kV (corresponds to severity 3)

Conducted interference injection, surge acc. to IEC 61 000-4-5: 2 kV (corresponds to severity 3)

Electrostatic dischargeacc. to IEC 61 000-4-2: 8 kV (corresponds to severity 3)

Field-generated interference injectionacc. to IEC 61 000-4-3: 10 V/m (corresponds to severity 3)

EMC emitted interference Limit-value class B acc. to EN 55 011

Main circuitRated insulation voltage Ui (pollution degree 3)

3RB12 46: 690 V for blank/unisolated conductors; 1000 V for isolated conductors3RB12 53, 3RB12 57, 3RB12 62: 1000 V

Rated operational voltage Ue 3RB12 46: 690 V; 3RB12 53, 3RB12 57, 3RB12 62: 1000 V general

Rated impulse withstand voltage Uimp 3RB12 46: 6 kV3RB12 53, 3RB12 57, 3RB12 62: 8 kV

Rated frequency and type of current 50/60 Hz; 3-phase and for protection of single-phase motors (see circuit diagrams)

Short-circuit protection • with fuses 1)

• with circuit-breaker 2)

Diameter of the cut-outs(≤100 A max. Ie)

10 mm (devices with max. current setting Ie≤25 A); 15 mm (devices with max. current setting Ie100 A ); (devices with max. current setting Ie >100 A:mounting with connecting bars)

Busbar connection (>100 A max. Ie) 3RB12 53 3RB12 57 3RB12 62

tightening torque Nm M 8: 10 to 14 M 10: 14 to 24 M 10: 14 to 24; M 12: 20 to 35

finely stranded with cable lug mm2 35 to 95 50 to 240 50 to 240

stranded with cable lug mm2 50 to 120 70 to 240 185 to 240

SIRIUS 3R

1) See table on page 4/27.2) See Part 5.



CLASS 5 to CLASS 30

Technical data

Auxiliary circuit/control circuitAuxiliary contacts (electrically isolated) 1 NO/1 NC for overload tripping due to current and/or thermistor;

1 NO/1 NC for earth-fault tripping or1 NO/1 NC for overload tripping due to current and/or thermistor and/or earth-fault : 1 NO/1 NC for overload warning

Recovery time 5 (fixed), after tripping due to overcurrent. After tripping by the ther-mistor as long as the motor temperature has not fallen to 5 K below the operating temperature of the thermistor.

Rated insulation voltage Ui 300 V (pollution degree 3)

Rated impulse withstand voltage Uimp 4 kV

Conventional thermal current 6 A

Rated operational current Switching capacity: AC-15: 6 A/24 V; 6 A/120 V; 3 A/230 V; DC-13: 2 A/24 V; 0.55 A/60 V; 0.25 A/125 V

Rated control supply voltage Us AC 50/60 Hz: 110 V to 120 V; 220 V to 240 V; DC: 24 V

Operating range AC 50/60 Hz: 0.85 to 1.1 x Us, 2 VA; DC 24 V: 0.85 to 1.2 x Us (DIN 19 240), 2 W

Power failure stored-energy time 200 ms

Thermistor protection

(PTC thermistor sensor)

Summated cold resistance: 1.5 kΩ;Response value: 2.7 kΩ to 3.1 kΩ; fall-back value: 1.5 kΩ to 1.65 kΩ

Response time after earth-fault detection External: 200 ms to 500 ms; internal: 500 ms to 1000 ms

Short-circuit protection Fuse links utilization category gL/gG 6 A, fast 10 A; miniature circuit-breaker 1.6 A; C-characteristics

Conductor cross-sectionstightening torque 0.8 Nm to 1.2 Nm

solid 1 x (0.5 mm2 to 4.0 mm2); 2 x (0.5 mm2 to 2.5 mm2)

finely stranded with/without end sleeve 1 x (0.5 mm2 to 2.5 mm2); 2 x (0.5 mm2 to 1.5 mm2)

Analog outputOutput signal 4 to 20 mA

Measurement range 0 to 1.25 · Ie4 mA 0 · Ie

16.8 mA 1.0 · Ie20 mA 1.25 · Ie

Resolution 10 bit (approx. 1/8 %)

SIRIUS 3R



CLASS 5 to CLASS 30

Technical data

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3RB

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7.0

5.0

4.0

7.0

5.0

4.0

7.0

5.0

4.0

7.0

5.0

4.0

7.0

5.0

4.0

3520

2060

3UF5

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3RT1

016

9.0

6.5

5.2

9.0

6.5

5.2

9.0

6.5

5.2

9.0

6.5

5.2

9.0

6.5

5.2

3520

2060

3RT1

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12.0

9.0

6.3

11.0

9.0

6.3

10.0

9.0

6.3

9.5

9.0

6.3

9.0

9.0

6.3

3520

2060

3RT1

024

12.0

12.0

9.0

12.0

12.0

9.0

12.0

12.0

9.0

12.0

12.0

9.0

12.0

12.0

9.0

6325

2025

703R

T102

517

.017

.013

.017

.017

.013

.016

.016

.013

.015

.015

.013

.014

.014

.013

.063

2520

2570

3RT1

026

25.0

18.0

13.0

18.0

18.0

13.0

16.0

16.0

13.0

15.0

15.0

13.0

14.0

14.0

13.0

100

3520

3510

03R

T103

425

.025

.025

.025

.025

.025

.022

.322

.322

.320

.320

.320

.319

.119

.119

.112

563

5063

100

3RT1

035

25.0

25.0

25.0

25.0

25.0

25.0

25.0

25.0

25.0

125

6350

6310

0

25 t

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32.0

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33.0

33.0

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28.0

28.0

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125

6350

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T103

650

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38.5

38.5

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29.4

29.4

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160

8050

8020

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T104

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56.0

56.0

4749

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45.0

45.0

45.0

41.7

41.7

41.7

250

125

6312

525

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T104

580

8058

6161

5853

5353

4747

4745

4545

250

160

8016

025

03R

T104

695

9558

6969

5859

5958

5352

5350

5050

250

160

100

160

350

3TF5

010

010

010

087

8787

7676

7671

7171

6565

6540

022

412

516

017

53T

F51

100

100

100

9797

9790

9090

8383

8340

025

016

020

020

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F52

100

100

100

100

100

100

100

100

100

400

250

200

200

200

50 t

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110

110

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8787

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7676

7676

7164

6464

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224

125

160

175

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140

140

110

111

111

110

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9797

9790

8383

8340

025

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020

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017

017

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513

513

511

811

811

811

811

810

910

110

110

140

025

020

025

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205

205

205

162

162

162

143

143

143

143

143

132

122

122

122

400

250

250

250

300

3TF5

419

819

819

817

417

417

417

417

416

114

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914

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025

025

025

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205

205

205

205

205

205

205

205

194

178

178

178

400

250

250

250

300

3TF5

620

520

520

520

540

025

025

025

040

0

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3TF5

217

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017

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513

513

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025

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517

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216

216

214

314

314

314

314

313

240

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819

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417

417

417

417

416

114

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823

823

820

820

820

820

820

819

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817

817

850

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040

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831

831

827

827

827

827

827

825

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823

823

880

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037

837

837

833

233

233

233

233

230

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428

480

050

063

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500

500

500

500

500

500

440

440

440

440

440

408

376

376

376

800

500

630

500

1200

3TF6

950

050

050

050

050

050

050

050

050

080

050

063

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200

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3RB

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630

630

630

502

502

502

440

440

440

440

440

408

376

376

376

1000

500

630

500

1200

3UF5

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820

820

820

662

662

662

572

572

572

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572

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1250

630

630

630

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SIRIUS 3R



Description

Functions• Tripping in the event of over-

load, current unbalance, phase failure or blocked rotor.

• Full motor protection by con-nection of a thermistor (PTC sensor circuit in the motor coil) possible; it is deactivated by the prefitted wire jumper A (see front view). The monitor-ing system of the termistor is fail-safe, i. e. a wire break causes tripping.

• Earth-fault monitoring- internal for motors with 3-

lead connection (earth-fault detection in the event of fault currents > 30 % of the cur-rent setting Ie )

- The units with internal earth-fault detection are not suit-able for operation in star/delta combinations.

- external for motors with 3 and 4-lead connection by connection of a 3UL22 0 . –. A summation current trans-

former (reliable earth-fault detection in the event of fault currents of 0.3 A, 0.5 A and 1 A). These values are appli-cable for sinusoidal currents of 50/60 Hz

• Overload warning above- 1.15 × Ie with balanced load- 0.85 × Ie with unbalanced

load- display by flashing “over-

load” LED at the unit or ex-ternal via 1 NO/1 NC (ac-cording to the version of the unit)

• Electrically isolated auxiliary contactFunction according to version:- 1 NO/1 NC for overload trip-

ping by current and/or ther-mistor1 NO/1 NC for earth-fault tripping

- 1 NO/1 NC for overload trip-ping by current and/or ther-mistor and earth fault 1 NO/1 NC for overload warning

• Versions of the unit with monostable or bistable func-tioning of the output relays

• 3 LED displays (“Ready”,“Ground Fault”, “Overload”)

• Combined TEST-/RESET-button with function test

• Remote and automatic RESET by means of external wiring is possible (an automatic RESET in the event of tripping by earth-fault has no effect)

• Selectable trip class (time-lag class): CLASS 5/10/15/20/25/30

• Large ranges of the set cur-rent Ie

• High tripping precision• Current detection immune to

harmonics• Temperature range from

–25 °C to +70 °C• Self-monitoring, i.e. the units

trips in the event of an internal fault

• Versions of the unit for control supply voltages of 24 V DC, 110 to 120 V AC, 220 to 240 V AC.

Operation on frequency convertersThe 3RB12 solid-state relays are suitable for operation on fre-quency converters.

3RB12 overload relays with analog output

With the aid of the micropro-cessor, the measured motor current is converted to an ana-log DC 4 mA to 20 mA output signal. The maximum current of the 3 phases is always output. An output signal of 20 mA cor-responds to 1.25 times the set value. The current setting of the 3RB12 defines calculation of the absolute current value.

With the output signal, moving coil instruments with a 4 mA to 20 mA input can be controlled (final scale value for all sizes 125 %) or analog inputs of pro-grammable logic controllers can be fed.With an analog AS-Interface module (current), the current values can be transferred via AS-Interface.

3RB12 overload relays (front view)

1 Terminals for control supply volt-age

2 Green LED “Ready”3 Red LED “Ground Fault”4 Red LED “Overload”5 TEST-/RESET button6 1 NO/1 NC for overload/

thermistor tripping or1 NO/1 NC for overload/thermistor/earth-fault tripping

7 Thermistor terminals8 Terminals for external summation

current transformer9 Terminals for remote or

automatic RESET10 Rotary button for current setting11 CLASS selector rotary knob12 1 NO/1 NC for earth-fault tripping

or 1 NO/1 NC for overload warn-ing

13 Analog output 4 ... 20 mA

PTB Test ReportThe 3RB12 solid-state overload relay complies with the specifi-cations for the overload protec-tion of flameproof motors of protection type “increased safety” EEx e EN 50 019/DIN VDE 0165, DIN VDE 0170/171 and PTB test regulations.For overload relays with DC operation, the electrical isola-tion must be assured by means of a battery supply or a safety transformer according to DIN VDE 0551.With 3RB12 . .-. . . .1 units (no change of the switching state of the auxiliary contacts in the case of failure of the control suply voltage) for protection of EEx e electrical motors, sepa-rate monitoring of the control supply voltage is recom-mended.PTB Test Report No. 3.53-3907/96

9 5 9 6 9 7 9 8 0 5 0 6 0 7 0 8

N CN C

5

1 0

1 52 0 2 5

3 0

C L A S S

2 53 0

4 0

5 06 07 0 8 0 9 0

1 0 0

A

R e a d y

G n d F a u l t

O v e r l o a d

T E S T /R E S E T

S I E M E N S

A 1 A 2 T 1 T 2 / C 1 C 2 Y 1 Y 2

3 R B 1 2

N S K - 7 0 3 5 d

2

3

4

5

6

78

9

1 0

1 1

1 2

1

1 3

R

Tripping characteristicsThe time-current characteristic for 3-pole symmetric loading shows the dependence of the tripping time from a cold state on multiples of the current set-ting.If the unit is pre-loaded with 100 % of the current setting, the tripping times are shortened to approx. 30 %.In the event of 2-pole loading (failure of a phase) or a current unbalance > 40 % of the current setting, the 2-pole characteris-tic applies.

Time-current characteristic for 3-pole loading

Time-current characteristic for 2-pole loading

1 2 01 0 0

5 0

2 0

1 0

5

2

15 0

2 0

1 0

5

2

1 2 5 1 0 x I e

min

s

N S K - 7 0 3 6 c

0 , 6

C L A S S 3 0 2 5 2 0

1 5 1 0C L A S S 5

A

Tripping time


1 2 01 0 0

5 0

2 0

1 0

5

2

15 0

2 0

1 0

5

2

1 2 5 1 0 x I e

min

s

N S K - 7 0 3 7 c

0 , 6

C L A S S 3 0 2 5 2 0

1 5 1 0C L A S S 5

A

Tripping time


SIRIUS 3R



CLASS 5 to CLASS 30

Description

Mode of operation and controlThe currently flowing motor cur-rent is detected in each phase via current transformers and continuously monitored by a microprocessor.If an overload > 110 % of the current Ie occurs which is set with the rotary knob on the front of the unit, if there is a current unbalance > 40 % of Ie or if a phase-failure occurs, tripping is initiated by the switching of two auxiliary contacts (1 NO/1 NC) after expiry of the tripping time which is set with the six-step ro-tary switch (CLASS 5/10/15/20/25/30 → see tripping characteristics).Resetting, either by pressing the TEST/RESET button on the unit or by remote or automatic RESET, is possible after the re-covery time of 5 min has elapsed.Tripping due to responding of the thermistor sensor occurs via the same auxiliary contacts but without a time delay. Here, re-setting is not possible until the temperature in the motor coil has fallen to 5 K below the oper-ating temperature of the ther-mistor.In the event of an earth-fault, the unit trips without a time delay. According to the version of the unit, this may happen via a sep-arate output (1 NO/1 NC). Re-setting of the unit is possible in this case without a time delay/without elapsing of a recovery time.A test of the unit’s functions, namely current detection, the thermistor and earth-fault input, and of the tripping functions of the auxiliary contacts can be ini-tiated by pressing the TEST/RE-SET button. The test of the unit’s functions can also be carried out during operation (LED sig-nals).A self-monitoring feature also causes the unit to trip when an internal fault occurs. In this case resetting is not possible.

SpecificationsIEC 60 947-4-1/DIN VDE 0660 Part 102; IEC 60 947-5-1/DIN VDE 0680 Part 200; IEC 60 801-2, -3, -4, -5; UL 508/CSA C 22.2.

Overload relays are used for protecting electrical equipment against overheating (3-phase motors, transformers, ...). This can be caused by overloading, unbalanced current input, phase failure (main leads) or a blocked rotor.Solid-state overload relays pro-vide highly-sophisticated mo-tor-protection such as• high precision of the tripping

characteristic with a tolerance of < ±10 %

• fine adaptation to normal or heavy starting duty by means of an adjustable trip class (CLASS 5/10/15/20/25/30)

• independence from outside influence such as shocks, dif-ferent cable cross-sections, temperature fluctuations, ag-gressive surroundings or age-ing

• a defined recovery time (here 5 min).

Function in the event of control supply voltage failure

In the case of a long-time failure of the control supply voltage (> 0.2 s), the output relays react in different ways depending on the version: monostable or bistable.

Function of the output relays Monostable Bistable

at: 3RB12 . .-. . . . 0 3RB12 . .-. . . . 1

Failure of the control supply voltage Unit trips No change in the switching state of the auxiliary contacts

Return of the control supply voltage without trip

Unit resets No change in the switching state of the auxiliary contacts

Return of the control supply voltage after trip

Unit remains trippedResetting: In the event of overload tripping, after 5 min;in the event of thermistor tripping when 5 K below the operating temperature; in the event of earth-fault tripping, immediately

Unit remains trippedResetting: In the event of overload tripping, after 5 min;in the event of thermistor tripping when 5 K below the operating temperature; in the event of earth-fault tripping, immediately

Mono- and bistable 3RB12 solid-state overload relays

N S K - 8 4 7 8

tC o n t r o lv o l t a g e

B i s t a b l e

M o n o s t a b l e

B i s t a b l e

M o n o s t a b l e

M o t o r t o o h o t :u n i t t r i p s

C o n t r o l v o l t a g ef a i l u r e

C o n t r o l v o l t a g er e t u r n s

M a n u a l / a u t o r e s e t a f t e r 5 m i n . o r

a f t e r t h e t h e r m i s t o r h a s c o o l e d

C o n t a c t o p e n e d

C o n t a c t c l o s e d

Ö

S

Ö

S

Ö

S

Ö

S

01

Control voltage failure

with prior tripping

by thermistor

or overcurrent

A

Control voltage failure

without prior tripping

by thermistor

or overcurrent

ApplicationThe 3RB12 electronic overload relays enable protection of elec-trical equipment and installa-tions with three different protec-tive mechanisms in one unit: • overload protection with per-

manent monitoring of the indi-vidual currents in the motor leads

• thermistor motor protection with evaluation of a PTC ther-mistor sensor circuit

• earth-fault protection:internalIn the event of a motor current between 0.3 times and twice the current setting, the unit trips at an earth-fault current that amounts to 30 % of the current setting.In the event of a motor current between twice and eight times the current setting, the unit trips at an earth-fault current that amounts to 15 % of the motor current.The response delay is 0.5 to 1 s.

external for motors with 3 and 4-lead connection by connection of a 3UL22 0 . – . A summation current transformer (reliable earth-fault detection in the event of fault currents of 0.3 A, 0.5 A and 1 A).

Thermistor protection (full motor protection) is provided by a PTC temperature sensor (e. g. for motors whose stator is the criti-cal component, motors with long starting and breaking pro-cedures, motors with impeded cooling or with high ambient temperatures).Additional evaluation equip-ment is not needed. Less space and wiring are therefore re-quired.

SIRIUS 3R



Description

The current transformers for all sizes of the 3RB12 electronic overload relays are already inte-grated in the housing.Units with current setting ranges < 100 A (overall width 70 mm) are designed for single installa-tion due to the push-through system used.With this system, the main power leads for rated motor cur-rents of 1.25 A to 100 A are sim-ply pushed through the current transformer integrated in the compact unit (“first loop”).

Design and mounting

Additional installation work and power losses at the transfer re-sistor of the terminal points which are otherwise needed are thus avoided.For rated motor currents IN smaller than 1.25 A, the motor leads in each phase can be taken through the loop-through holes several times (n times). The current setting Ie of the unit can then be calculated to Ie = n × IN (e.g.: IN = 0.5 A; n = 3; Ie = 3 × 0.5 A = 1.5 A).n = 5 is recommended as the practical upper limit.

Units with 70 mm overall width are either snapped onto a 35 mm standard mounting rail in accordance with EN 50 022 or are screwed onto a mounting plate by means of push-in lugs which are available as accesso-ries.For current setting ranges > 50 A to 820 A (overall width: 120 mm, 145 mm and 230 mm) the 3RB12 electronic overload relays can be directly mounted on the contactors via connect-ing rails.

The screw mounting for these units is integrated in the hous-ing.For 3RB12 53 units (overall width: 120 mm), a baseplate is also available for snap-on mounting on a 75-mm mounting rail.

Internal circuit diagrams Connection diagrams

3RB12 overload relays standard version Protection of single-phase motors

3RB12 46- . . . 0., - . . . 1 .;

(Only in the case of units without internal earth-fault detection)

3RB12 53- . . . 0., - . . . 1 .3RB12 57- . . . 0., - . . . 1 .3RB12 62- . . . 0., - . . . 1 .

N S K - 8 4 7 7 a

L 1L 2L 3N

3 ~M

F 2 F 3 F 4

G r o u n d F a u l t

C L A S S5 , 1 0 , 1 5 , 2 0 , 2 5 , 3 0

3 R B 1 2

H 1 H 1H 1

Y 1Y 2Y 1Y 2

A u t o m a t i cR e s e t

R e m o t eR e s e t

A 1

A 2K 1 E

9 6 9 8 0 6 0 8642T 1 T 2 T 3 T 1

T 2 /C 1 Y 2 Y 1

R e a d y G r o u n dF a u l t

O v e r l o a d

K 1 O v e r l o a d

K 2 G r o u n dF a u l t

9 5 9 7 0 5 0 7A 1A 2C 2T 2 /C 1531

L 1 L 2 L 3F 1T e s t /R e s e t

531

642K 1 E

Z 2

Z 1

F 5

S 1 A

S 1 E K 1 E

3 U L 2 2

ϑ

ϑ

LN

M1 ~

NSK-7013b

L 1 L 2 L 3

T 1 T 2 T 3

3 R B 1 2

LN

M1 ~

NSK-7014b

L 1 L 2 L 3

T 1 T 2 T 3

3 R B 1 2

SIRIUS 3R

3UA6 Thermally Delayed Overload Relays



Selection and ordering data3UA6 Thermally Delayed Overload Relays

Overload relays for mounting onto contactor and installation as a single unit• for snap-on and screw mounting

snapping onto 35 mm stand. mounting rail acc. to EN 50 022

1) From setting range 135 to 180 A, installation as a single unit is required (heat dissipation).

For contactor Overload relays Weight

Current setting range Order No. approx.

A Preferred type kg

3TF50 55 to 80 3UA60 01-2H 0.763 to 90 3UA60 01-2W80 to 110 3UA60 01-2X90 to 120 3UA60 01-3H

110 to 135 3UA60 01-3J


110 to 135 3UA61 01-3J120 to150 3UA61 01-3K


110 to 135 3UA62 01-3J120 to 150 3UA62 01-3K135 to 1601) 3UA62 01-3L

3TF53 170 to 2051) 3UA62 01-3N 0.7

Thermally delayed overload relays

3UA60, 3UA61 and 3UA62• STOP button• Test function• Integrated sealable cover• SIRIUS 3RU19 accessories can be used• Trip class CLASS 10• Auxiliary contacts 1 NO + 1 NC• Manual/automatic RESET• Switch position indicator• Phase failure sensitivity

up to 820 A · CLASS 10 and 5 up to 30 s3UA6 and 3RB12 Overload Relays



3RB12 solid-state overload relays with• Current transformer• Auxiliary contacts 2 NO + 2 NC• Trip classes CLASS 5 to 30, changeable• Manual/automatic/remote RESET• Phase failure sensitivity• Test functions and 3 LEDs• Rated control supply voltage 50/60 Hz, 230 VSee 3RB12 for further information and versions.

3UA6 and 3RB12 Overload Relays

3UA66 and 3UA68 overload relays with• Current transformer• Auxiliary contacts• Trip class CLASS 10 A• Manual/automatic RESET• Switch position indicator• Phase failure sensitivity

Overload relays for installing as a single unit

3UA66 and 3UA68 overload relays with snap-on mounting onto 75 mm standard mounting rail acc. to EN 50 023

3RB12 overload relays for screw mounting or for direct mounting to the 3TF5 and 3TF6 contactors

Overload relays Weight Overload relays Weight

Current setting range Order No. approx. Current setting range Order No. Price approx.

An Obsolescent type

with replacement type

kg A Preferred type kg

80 to 125 3UA66 00-2K 2.5 50 to 205 3RB12 53-0FM00 1125 to 200 3UA66 00-3B 50 to 205 3RB12 53-0FM00160 to 250 3UA66 00-3C 125 to 500 3RB12 57-0KM00 1.9200 to 320 3UA66 00-3D 125 to 500 3RB12 57-0KM00250 to 400 3UA66 00-3E 125 to 500 3RB12 57-0KM00

320 to 500 n 3UA68 00-3F 3 125 to 500 3RB12 57-0KM00 1.9400 to 630 n 3UA68 00-3G 200 to 820 3RB12 62-0LM00 3.2

3UA Thermally Delayed Overload Relays


CLASS 10

Accessories3UA Thermally Delayed Overload Relays


Pack.

1 unit kg Unit

Terminal covers3TX7 506-0A

3UX1 120/3UX1 121

3TX6 5.6

For protection against inadvertent contactin acc. with DIN VDE 0106 Part 100

• For overload relays with box terminals(1 item required per connection side)

3UA60 3TX7 506-0A 0.044 10

• For busbar terminals with installation as a single unit(1 item required per connection side)

3UA66. 3UA68 3TX7 536-0A 0.108 2

• For screw connection between contactor andoverload relays without box terminals,cover to be mounted to contactor (1 item required per combination)

3TF50/3UA603TF51/3UA613TF52/3UA62

3TX7 506-0B 0.023 5

• For screw connection beween contactor M 6and overload relay

3TF50/3UA60 3UX1 120 0.05 3

M 8 3TF51/3UA61,3TF52/3UA62

3UX1 121

• For busbar terminals with installation as a single unitM 6 (1 set = 6 items)

3UA60without box terminal

3TX6 506-3B 0.1 1 pack-ing

M 8 3UA61/623UA66 to 200 A

3TX6 526-3B

M 10 3UA66/68 3TX6 546-3B

Terminal block3UX1 424 • For installing as a single unit 3UA60 3UX1 424 0.2 10

Links3UX1 21. • For connection to contactor/starter

3TF51, 3TF52, 3TB52 3UA61, 3UA62 3UX1 221 0.085 33TF53, 3TF54, 3TB54, 3TD54, 3TE54 up to 200 A 3UA62, 3UA66 3UX1 210 0.1 33TF54, 3TB54, 3TD54, 3TE54, 3TF55, up to 400 A 1)3TF56, 3TB56, 3TD56, 3TE56, 3TF57

3UA66, 3UA68 3UX1 211 0.33 3

3TF57, 3TF68, 3TB58, 3TD68, 3TE68 up to 630 A 3UA68 3UX1 218 0.84 3

Mechanical RESET3RU19 00-1A Resetting plunger, holder and funnel 3RU19 00-1A 0.02 1 set

Suitable pushbutton IP 65 ∅ 22 mm 3UA60 01 3SB10 00-0AH01 0.01 10Holder for pushbutton 3UA61 01 3SB19 02-1AC 0.02 100 Indicator label with inscription RESET

with push button,holder and indicator label

3UA62 01 3SB19 01-4EM 20

Cable release with support for RESET3RU19 00-1. (a bore of 6.5 mm dia. is required Length 400 mm 3UA60 01 3RU19 00-1B 0.07 1 set

in the switchboard Length 600 mm 3UA61 01 3RU19 00-1Cmax. switchboard thickness 8 mm) 3UA62 01

Module for remote RESET, electrical3RU19 00-2A.71 Operating range 0.85 to 1.1 x Us 3UA60 01

Power consumption AC 120 VA, DC 70 W 3UA61 01ON period 0.2 s to 4 s 3UA62 01

AC/DC 24 V to 30 V 3RU19 00-2AB71 0.06 1AC/DC 110 V to 127 V 3RU19 00-2AF71AC/DC 220 V to 250 V 3RU19 00-2AM71

1) Not for 3UA6 600-2U/-3B

CLASS 10 3UA Thermally Delayed Overload Relays

Technical dataaccording to IEC 60 947-4-1


General data

Type 3UA60 01- . ./ 3UA61 01-..3UA62 01-..

3UA66 3UA68

Trip class 10 10 10 A 10 A

Phase failure sensitivity bydifferential shutter

yes


RESET button with trip-free feature yes

STOP button yes no

Test function yes

Sealable cover integrated Accessories

Permissible ambient temperature °C –20 to +60 –25 to +55

Shock resistance g/ms 8/10

Main circuit

Rated insulation voltage Ui(pollution degree 3)

V 1000

Rated impulse withstand voltage kV 8

Type of current, frequency range DC, AC up to 400 Hz AC 50 to 400 Hz

Conductor cross-sections Current setting range (<= 200 A / > 200 A )

Terminal screw M 6 M 8 M 8/M 10 M 10Solid or stranded mm2 2 x 25 to 70 2 x 50 to 120 185/240 2x240

Finely stranded with end sleeve mm2 25 to 50 25 to 95 – –

Flat bars mm – 20 x 3 20x3/2x30x5 2x30x5

Tightening torque Nm 6 to 8 10 to 14 10 to 14 14 to 24lb. in 52 to 60 89 to 124 89 to 124/ 124 to 210

Nm 14 to 24

lb. in 124 to 210

Power losses per conducting path (max.)• at lowest value of setting range W 5 5 4 (5) 6 (9)

• at highest value of setting range W 7 8 10 (12) 15 (22)



CLASS 10Technical data

according to IEC 60 947-4-1

Auxiliary circuit

Type 3UA60 01- . ./ 3UA61 01-..3UA62 01-..

3UA66 3UA68

Auxiliary contacts 1 NO + 1 NC

Conductor cross-sectionsTerminal screw M 3 M 3.5Solid or stranded mm2 2 x (0.5 to 1.5); 2 x (0.75 to 2.5) 2 x (0.5 to 1); 2 x (1 to 2.5)Finely stranded with end sleeve mm2 2 x (0.5 to 1.5); 2 x (0.75 to 2.5) 2 x (0.5 to 1); 2 x (0.75 to 2.5)Tightening torque Nm 0.8 to 1.2 0.8 to 1.4

lb. in 7 to 10.3 7 to 12


V 690 -

• NC V - 690

• NO and NC with unequal potential

V - 400

• NO and NC connected as changeover contact

V - 690

Rated impulsewithstand voltage Uimp

kV 6

Switching capacity

NC at AC. AC-14/AC-15 • Rated operational current Ie at Ue:- 24 V A 4 2- 60 V A - 1.5- 125 V A - 1.25- 230 V A 3 1.15- 400 V A 1.5 1.1- 500 V A - 1- 600 V A 0.6 -- 690 V - 0.8

NO at AC. AC-14/AC-15 Rated operational current Ie at Ue:- 24 V A 2.2 2- 60 V A - 1.5- 125 V A - 1.25- 230 V A 1.5 1.15- 400 V A 0.8 1.1- 500 V A - 1- 600 V A 0.6 -- 690 V A - 0.8

NC/NO at DC, DC-13 Rated operational current Ie at Ue:- 24 V A 1 2- 60 V A - 0.5- 110 V A 0.15 0.3- 220 V A 0.1 0.2

Conventional thermal current Ith A 6Contact reliability Suitable for PLC;

17 V, 5 mAyes

Short-circuit protection -

Fuse links Utilization category gL/gG A 6fast A 10

Miniature circuit-breaker C-characteristics A 6 3

s-, u-, U-ratingsRated voltage AC V - 400 630

Switching capacity B 600, R 300

NS

1-53

29N

S1-

5330

NS

1-53

31

Box terminals block for installing as a single unitType 3UX1 424

For overload relays 3UA60

Conductor cross-sectionsTerminal screw M 6Solid or stranded mm2 2x25 to 70Finely stranded with end sleeve mm2 2x25 to 50

Trip classes of thermal, delayed magnetic orsolid-state overload relays – excerpt from IEC 60947-4-1Trip class Tripping time tA in seconds

at 7.2 x Ie from cold state10A 2 < tA ≤ 1010 4 < tA ≤ 1020 6 < tA ≤ 2030 9 < tA ≤ 30



CLASS 10 Technical data according to IEC 60 947-4-1and DIN VDE 0660 Part 102

Short-circuit protection with fuses for motor feederswith short-circuit currents up to 50 kA at 690 V1), 50/60 Hz

See Parts 2 and 5 for details of short-circuit protection with circuit-breakers, fuseless motor feeders and device combinations for fitting on busbars.

1) Voltage tolerance +5%.2) Coordination of short-circuit equipment according to IEC 60947-4-1/DIN VDE 0660 Part 102:

Type of coordination “1”: The contactor or starter must not endanger persons or the installationin the event of a short-circuit. They do not need to be suitable for further operation without repair and the renewal of parts.

Type of coordination “2”: The contactor or starter must not endanger persons or the installationin the event of a short-circuit and must be suitable for further use. There is a danger of contact welding.

3) Applies to 3TB contactors.

Overload relays Permissible short-circuit fuses for motor startersconsisting of overload relay and contactor, contactor assembly

Type Fuse linksNH Type 3NA NH British u-listedDIAZED Type 5SB Type 3ND standards fusesNEOZED Type 5SE fuses CLASS R K5Utilization category gL/gG

Utilization category aM

BS 88 Type T

Type of coordination 2)



Setting range “1” “2” “2” “1” “2”A A A A A A A

3UA60, 3UA61, 3UA62 thermal overload relays 55 to 80 400 160 100 315 160 30063 to 90 400 160 100 315 160 35080 to 110 400 200 125 315 160 40090 to 120 400 224 125 315 200 450

110 to 135 400 224 160 315 200 500120 to 150 400 250 160 315 250 600135 to 160 400 250 160 355 250 600150 to 180 400 250 200 355 250 700170 to 205 400 250 200 355 315 800

3UA66, 3UA68 thermal overload relays 80 to 125 355 224 125 355 224 300

125 to 200 355 224 200 355 224 300160 to 250 500 400 250 500 355 300200 to 320 500 400 315 500 400 300250 to 400 800 500 400 800 450 400320 to 500 800 500 630 800 500 400400 to 630 1000 500

(630) 3)630 1000 500 1200

CLASS L



CLASS 10

Description

Housing reference mark

Permissible mounting position for relays installed as a single units(for mounting onto contactors see Part 3)

Tripping characteristicsThe current-time curves show the relationship between the tripping time from cold state and multiples of the set current IE. When the relay is at operat-ing temperature and carrying 1.0 × IE, the tripping times are reduced to approximately 25 %.

Scale set to - mark

Tripping relay snapped onto a con-tactor (short connecting leads)

Scale set to k mark

Tripping relay installed as a single unit (connecting leads up to 1.5, 2.5 or 4 m long)

k1 k2 k3

l1 l2 l3 NS

K-8

59

2

k1 k2 k3

l1 l2 l3 NS

K-8

59

3

22,5°

NS

2-5

681

b

Specifications

IEC 60 947-4-1/DIN VDE 0660 Part 102.

The overload relays are suitable for use in any climate. They are safe from touch acc. to DIN VDE 0106 Part 100. Depending on the specific arrangement with other equipment, the busbar connection terminals must be protected by 3TX6, 3TX7 or 3UX terminal covers.The overload relays are suitable for use on board ship.

Overload protection of flame-proof motors of protection type “increased safety” EEx e

EN 50 019/DIN VDE 0165, DIN VDE 0170/0171.• Copies of the tripping charac-

teristics for the tripping units and relays with inverse time-lag feature must be available at the point of use (for tripping characteristics refer to the In-structions).

• The tripping units or relays for squirrel cage motors must be selected so that the tripping time with 3-pole loading, inde-cated by the IA/IN curve for the protected motor, does not ex-ceed the locked-rotor time tE-given on the test label of the motor.

• The protective gear for motors must also be capable of giving protection in the event of fail-ure of one phase.

3UA60 013UA61 013UA62 01

3UA66, 3UA68

3UA66, 3UA68,separate mounting of current transformer and tripping relay

95

96

97

98 NS

K-7

59

9

4T2 6T32T1

1L1 3L2 5L3

TE

ST

RE

SE

T

ST

OP

2

9 5

9 6 9 8

N S K - 5 0 5 0 a

L 1

9 7

T 14

L 2

T 26

L 3

T 3

1 3 5R E S E T

A

O F F - T E S T9 5

9 6

9 7

9 8

l 1 l 2 l 3

k 1 k 2 k 3

L 1 L 2 L 31 3 5

2 4 6T 1 T 2 T 3

R E S E T

N S K - 5 0 5 1 b

C u r r e n t t r a n s f o r m e r

T r i p p i n g r e l a y

C o n n e c t i o n l e a d sC u 4 m m 2 , 4 m l o n g

A

O F F - T E S T

DMT Test ReportsTest certificate for operation of explosion protected motors 3UA60 013UA61 013UA62 01in preparation.

Overload relays with current transformers

3UX1 423 tripping relays are used with the 3UA66 and 3UA68 overload relays. They can either be snapped onto the current transformer or be in-stalled as single units.When the tripping relay is mounted separately from the current transformer the con-necting leads should be as fol-lows:• up to 4 m long:

4 mm2 Cu cross-section,• up to 2.5 m long:

2.5 mm2 Cu cross-section,• up to 1.5 m long:

1.5 mm2 Cu cross-section.

The set current (rated current of load) must also be set on the scale against the reference mark:

Tripping curve 3 is applicable to 3-pole loads and curve 2 to 2-pole loads. For single-pole loads, the tripping curves lie be-tween curves 2 and 3. For nor-mal operation, all 3 bimetallic strips of the overload relay must be heated. The 3UA overload relays are suitable for protect-ing motors with phase control.For protecting single-phase or DC-loads, therefore, all three main conducting paths must be connected in series. Tripping curve 3 is then applicable. The release current with a 3-pole symmetrical load is between 105 % and 120 % of the set cur-rent. Typical tripping characteristics

min

s

1 2 01 0 0

5 0

2 0

1 0

5

215 0

2 0

1 05

2

2

3

1 2 5 1 0 x I E

N S 2 - 5 6 8 0 b

Tripping time


A


for PTC Temperature Sensors3RN1 Thermistor Motor Protection



3RN1 Thermistor Motor Protection

Recoding table 3UN2 --> 3RN1

Voltage Features 3UN2 Order No. 3UN2 Order No. 3RN1 Features 3RN1 Voltage

AC 24 V Auto 1CO 3UN21 00-0CC7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 48 V Auto 1CO 3UN21 00-0CD7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 110 V Auto 1CO 3UN21 00-0CF7 3RN10 10-1CG00 Auto 1 NO + 1 NC AC 110 VAC 230 V Auto 1CO 3UN21 00-0CN7 3RN10 10-1CM00 Auto 1 NO + 1 NC AC 230 VDC 24 V Auto 1CO 3UN21 00-0CB4 3RN10 10-1CB00 Auto 1 NO + 1 NC DC 24 V

AC 24 V Auto 1 NO + 1 NC 3UN21 00-0AC7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 48 V Auto 1 NO + 1 NC 3UN21 00-0AD7 3RN10 10-1CW00 Auto 1 NO + 1 NC UC 24-240 VAC 110 V Auto 1 NO + 1 NC 3UN21 00-0AF7 3RN10 10-1CG00 Auto 1 NO + 1 NC AC 110 VAC 230 V Auto 1 NO + 1 NC 3UN21 00-0AN7 3RN10 10-1CM00 Auto 1 NO + 1 NC AC 230 VDC 24 V Auto 1 NO + 1 NC 3UN21 00-0AB4 3RN10 10-1CB00 Auto 1 NO + 1 NC DC 24 V

AC 24 V Manual 1 NO + 1 NC 3UN21 10-0AC7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 48 V Manual 1 NO + 1 NC 3UN21 10-0AD7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 110 V Manual 1 NO + 1 NC 3UN21 10-0AF7 3RN10 12-1CK00 Manual 1 NO + 1 NC AC 230 V/ 110 VAC 230 V Manual 1 NO + 1 NC 3UN21 10-0AN7 3RN10 12-1CK00 Manual 1 NO + 1 NC AC 230 V/ 110 VDC 24 V Manual 1 NO + 1 NC 3UN21 10-0AB4 3RN10 12-1CB00 Manual 1 NO + 1 NC DC 24 V

AC 24 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AC7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 48 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AD7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 110 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AF7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 230 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AN7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VDC 24 V Manual/Auto SCD 1 NO + 1 NC 3UN21 31-0AB4 3RN10 13-1BB00 Manual/Auto SCD 2 CO DC 24 V

AC 24 V Manual/Auto SCD 2 NC 3UN21 31-0BC7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 48 V Manual/Auto SCD 2 NC 3UN21 31-0BD7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 110 V Manual/Auto SCD 2 NC 3UN21 31-0BF7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VAC 230 V Manual/Auto SCD 2 NC 3UN21 31-0BN7 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 VDC 24 V Manual/Auto SCD 2 NC 3UN21 31-0BB4 3RN10 13-1BB00 Manual/Auto SCD 2 CO DC 24 V

AC 24 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AC7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 48 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AD7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 110 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AF7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 230 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AN7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VDC 24 V Manual/Auto SCD 1 NO + 1 NC, bistable 3UN21 31-1AB4 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 V

AC 24 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BC7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 48 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BD7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 110 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BF7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VAC 230 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BN7 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 VDC 24 V Manual/Auto SCD + 2 NC, bistable 3UN21 31-1BB4 3RN10 13-1BW01 Manual/Auto SCD 2 CO, bistable UC 24-240 V

AC 24 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EC7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 48 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0ED7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 110 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EF7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 230 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EN7 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VDC 24 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EB4 3RN10 22-1DW00 Manual/Auto, warn. off, 1 NO + 1 CO UC 24-240 VAC 400 V Manual/Auto warn.off, 1 NO + 1NC per sens. loop 3UN22 34-0EQ7 - No substitute; use matching transformer

AC 24 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EC7 - No substitute Possibly use 2 x 3RN10 13-1BW01 AC 48 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1ED7 - No substitute Manual/ Auto SCD 2 CO, bistable.AC 110 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EF7 - No substitute At 400 V use matching transformer.AC 230 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EN7 - No substituteDC 24 V Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EB4 - No substituteAC 400 Manual/Auto, bist., warn.off, 1 NO+1NC per sens. loop 3UN22 34-1EQ7 - No substitute

AC 24 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AC7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 48 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AD7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 110 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AF7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 230 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AN7 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VDC 24 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AB4 3RN10 62-1CW00 Manual/Auto 6 sensors 1 NO + 1 NC UC 24-240 VAC 400 V Manual/Auto 6 sensors 1 NO + 1 NC 3UN26 34-0AQ7 - No substitute; use matching transformer

AC 24 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AC7 - No substitute Possibly use 6 x 3RN10 13-1BW01AC 48 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AD7 - No substitute Manual/ Auto SCD 2 CO, bistable.AC 110 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AF7 - No substitute At 400 V use matching transformer.AC 230 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AN7 - No substituteDC 24 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AB4 - No substitute

No substituteAC 400 V Manual/Auto 6 sensors 1 NO + 1 NC, bistable 3UN26 34-1AQ7 -

AC 220 V Manual/Auto SCD 2 CO 3UN21 15-0DN2 3RN10 13-1BW10 Manual/Auto SCD 2 CO UC 24-240 V

Note: The 3RN1 are available as an alternative to the screw connectiontechnique specified here with Cage Clamp connection (see page 6 for notes on Cage Clamp connection).

SCD = Short-circuit detection in the sensor circuit.warn. off = Warning and switching off.Sens. loop = Sensor loop.



for PTC Temperature Sensors


Screw and Cage Clamp connectionThermistor motor protection relay for PTCs (Type A)• Monostable version (closed circuit principle),

Unit trips in the event of control supply voltage failure

Screw connection Cage Clamp connection

LED Design RESET Contacts Rated control supplyvoltage

Order No. Price Order No. Price Weight approx.

AC 50-60 HzV 1 unit 1 unit kg

Compact evaluation units, width 22.5 mm1 Terminal A1 is

bridged with the root of the changeover con-tact

Auto 1 CO AC 230 3RN10 00-1AM00 3RN10 00-2AM00 0.120/ AC 110 3RN10 00-1AG00 3RN10 00-2AG00

DC 24 3RN10 00-1AB00 3RN10 00-2AB00

Standard evaluation units, width 22.5 mm3RN10 12-2C... 2 Auto 1 NO +

1 NCUC 24...240 3RN10 10-1CW00 3RN10 10-2CW00 0.133AC 230 3RN10 10-1CM00 3RN10 10-2CM00AC 110 3RN10 10-1CG00 3RN10 10-2CG00DC 24 3RN10 10-1CB00 3RN10 10-2CB00

2 Test button

Reset possible by interrupting the control voltage

Manual 1 NO + 1 NC

AC 230 /110 3RN10 11-1CK00 3RN10 11-2CK00 0.145

DC 24 3RN10 11-1CB00 3RN10 11-2CB00

2 Fault memory Manual/Auto/Remote

1 NO + 1 NC

AC 230 /110 3RN10 12-1CK00 3RN10 12-2CK00 0.145

Test button DC 24 3RN10 12-1CB00 3RN10 12-2CB00

Multifunctional evaluation units, width 22.5 mm3RN10 13-1B... 2 Wire breakage

detection/indica-tion, short-circuit detection/indica-tion

Fault memory

Test button

Manual/Auto/Remote

2 CO UC 24...240 3RN10 13-1BW10 3RN10 13-2BW00 0.145DC 24 3RN10 13-1BB00 3RN10 13-2BB00

Evaluation units for 2 sensor circuits, alarm and trip, width 22.5 mm

3 Fault memory

Test button

Manual/Auto/Remote

1 NO + 1 CO

UC 24...240 3RN10 22-1DW00 3RN10 22-2DW00 0.145

Evaluation units for 6 sensor circuits, multiple motor protection, width 45 mm

. 8 Fault memory

Test button

Manual/Auto/Remote

1 NO + 1 NC

UC 24...240 3RN10 62-1CW00 3RN10 62-2CW00 0.260

Screw and Cage Clamp connectionThermistor motor protection relays for PTCs (Type A)• Bistable version (open circuit principle),

unit doesn’t trip in the event of control supply voltage failure

Screw connection Cage Clamp connection

LED Design RESET Contacts Rated controlsupplyvoltage

Order No. Price Order No. Price Weight approx.

AC 50-60 HzV 1 unit 1 unit kg

Multifunctional evaluation units, width 22.5 mm3RN10 13-1BW01 2 Short-circuit

detection indication

Fault memory

Test button

Manual/Auto/Remote

2 CO UC 24...240 3RN10 13-1BW01 3RN10 13-2BW01 0.145


Accessories


1) See page 4/42.2) Remote reset possible by interrupting the control voltage.3) Applicable for monostable version.

Design For type AccessoriesOrder No. Price

Weight approx.

Pack.

1 unit kg Unit

Sealable capto prevent unauthorized manual reset 3RN1 3RP 1902 5

Connecting links für screw mounting2 units required per thermistor motor protection 3RN1 3RP 1903 5 sets

with 2 units per set

Technical data

General data

Compact units

Standard units Multifunc-tional units

Alarm + trip Multiple motor prot.

Type 3RN10 00 3RN10 10 3RN10 11 3RN10 12 3RN10 13 3RN10 22 3RN10 62

Width mm 22.5 45

Number of connectable sensor circuits 1 2 6

Performance in the event of control voltage failure

1)

Manual RESET no yes

Automatic RESET yes no yes

Remote RESET no yes2) yes

TEST button no yes

Short circuit and wire breakage detection/indi-cation in the sensor circuit, display by LED

no yes3) no

Alarm and trip in one unit no yes no

Tripping unit


V 300

Permissible ambient temperaturePermissible storage temperature

°C - 25 to + 60- 40 to + 80

EMC tests EN 50 081-2; EN 50 082-2

Requirement class acc. to DIN 19 251 MK 3; DIN V 0801

Degree of protection acc. to DIN 40 050 IP 20

Conductor cross-section

Terminal screws PZ 2• Solid mm2 1 x 0.5 to 4 / 2 x 0.5 to 2.5• Solid, with end sleeves mm2 1 x 0.5 to 2.5 / 2 x 0.5 to 1.5• Tightening torque Nm 0.9 to 1.2

Cage Clamp connection• Solid, with end sleeves mm2 2 x 0.5 to 1• Solid, without end sleeves mm2 2 x 0.5 to 1.5• AWG conductor connections, solid or stranded AWG 2 x (24 to 16)

Sensor circuit

Circuit burden at RF ≤ 1.5 kΩ mW ≤5

Sensor circuit voltage at RF ≤ 1.5 kΩ V ≤2

Response temperature(determined by sensor)

°C 60 to 180

Coupling time(determined by sensor installed)

s approx. 5 s

Total cold resistance RF(for each sensor loop)

kΩ ≤ 1.5

Response value kΩ 3.4 to 3.8

Fall-back value kΩ 1.5 to 1.65

Response tolerance °C ±6




Technical data

Function diagrams

General data

Compact units

Standardunits

Multifunc-tional units

Alarm + trip Multiple motor prot.

Type 3RN10 00 3RN10 10 3RN10 11 3RN10 12 3RN10 13 3RN10 22 3RN10 62

Control circuitRated control supply voltage Us

1)

Operating range

• AC 0.85 ... 1.1 x Us

• UC 0.85 ... 1.1 x Us

• DC 0.85 ... 1.2 x Us

Rated power

• AC < 2 W

• UC < 2 W

• DC < 2 W

Auxiliary circuitConventional thermal current Ith 5

Rated operational current Ie

• AC-15 240 V A 3

• DC-13 24 V A 1 2 1 2) 1 2

Short-circuit protection to Alpha/Lovag

Utilization category gL/gG A 6

s- and u-rated data, control circuitRated control voltage 50/60 Hz

• AC same as Us

• DC same as Us

Switching capacity R 300/B 300

A1/A2

T1/T2RESET(Y1/Y2)

LED Tripped

96

9808

0605 95

NSK-1228

38001500

3RN10 13-...10

A1/A2

T1/T2

LED Tripped

96

98

9895

NSK-1226

979695

98979695

38001500

3RN10 00/3RN10 10(AUTO-RESET) A1/A2

T1/T2RESET(Y1/Y2)

LED TrippedNSK-1229

98979695

98979695

38001500

3RN10 11

A1/A23800

T1/T2RESET(Y1/Y2)

LED Tripped

96

9808

0605 95

NSK-1227

1500

3RN10 13-...01(bistable)

A1/A2

T1/T2RESET(Y1/Y2)

LED Tripped

NSK-1230

96

9895

979695

98979695

98

38001500

3RN10 12/3RN 1022/3RN10 62(Non-resetting on voltage failure)

2T1/T2

LED Alarm

08

NSK-1231a

07

0807

38001500

Only 3RN10 22

1) See selection and ordering data, page 4/39.2) In the case of RN10 13-1BW01 (bistable output relay) 2 A.

V See notes on page 4/42.



Description

SpecificationsThe tripping units are suitable for use in any climate and safe from touch acc. to DIN VDE 0106 Part 100.The 3RN1 tripping units comply with basic standard EN 50 081-2; EN 50 082-2 “Electromag-netic Compatibility of Measur-ing and Control Equipment in In-dustrial Process Engineering” and DIN VDE 0660 Parts 302 and 303; IEC 60 034-11-2 Sec-tion 1 and 2 “Thermal Machine Protection for Rotating Electrical Machines, Temperature Sen-sors and Tripping Units” and “Thermistor Temperature Sen-sor and Tripping Units”.The terminal designation of the auxiliary contacts is in accor-dance with EN 50 005.

Application3RN1 thermistor motor protec-tion tripping units are thermal protection devices which, in conjunction with PTC ther-mistors, are suitable for the tem-perature monitoring of electrical drives, transformer windings, oils, bearings, air etc.

Mode of operationThe 3RN1 tripping units work according to the principle of the closed-circuit current and thus are self-monitoring in the event of wire breakage. A short-time voltage failure of less than 200 ms (in the case of wide volt-age units < 100 ms) does not al-ter the state of the auxiliary con-tacts. The multifunctional evaluation unit 3RN10 13 is also fitted with a short-circuit detec-tion feature in the sensor circuit. In the event of a short-circuit in the sensor circuit (resistance in the sensor circuit < 20 Ω), the unit trips. In the tripping units, the control circuit and the sen-sor circuit are electrically iso-lated from each other when the control voltage is AC (DC con-trol supply voltage: no electrical isolation).

1) See page 6 for notes onCage Clamp connection.

3RN10 00 compact tripping unit The compact unit features a red TRIPPED LED and one change-over contact.Reset after tripping is automatic after the thermistors have cooled down. The root of the changeover contact is con-nected to the control voltage (95 with A1 terminal). This unit is particulary suitable in circuits in which control and signalling circuits have the same potential, e. g. in local switchboxes.

Standard tripping unitThe standard units feature two LEDs (READY and TRIPPED) and also 1 NO and 1 NC for switching off and signalling. They are obtainable with auto-matic RESET (3RN10 10), man-ual RESET (3RN10 11) or man-ual/automatic and remote RESET (3RN10 12). The 3RN10 12 is non-resetting in the event of voltage failure and so, in the event of a control voltage failure any previous tripping is stored.

3RN10 13 multifunctional trip-ping unit With the 3RN10 13 thermistor motor protection tripping units, the sensor circuit is monitored for short-circuiting as well. Trip-ping in the event of a short-cir-cuit is indicated by a flickering red LED. The monostable de-vices are additionally equipped with a wire-break detection and indication for the sensor circuit, which is indicated by flashing of the red LED.The 3RN10 13 tripping unit is equipped with manual, remote and automatic RESET functions. With the TEST/RESET button, the tripping unit is reset by hand.

A remote RESET is made possi-ble by connecting an external pushbutton to the Y1, Y2 termi-nals. If the Y1, Y2 terminals are jumpered, tripping is followed by automatic RESET.

Tripping unit “Alarm and Trip” 3RN10 22Two sensor circuits, each of which affects one output relay, can be connected to a 3RN10 22 tripping unit. The use of tem-perature sensors with different rated operating temperatures TNF make the functions “Alarm” and “Trip” possible. A response of the sensor circuit for “Alarm” is signalled by a yellow LED and for “ Trip” by a red LED.The sensor circuits have differ-ent resetting functions:• “Alarm” (terminals 2T1, T2) ex-

clusively automatic RESET• “Switch off” (terminals 1T1,

T2), can be changed from manual RESET to automatic RESET by jumpering of termi-nals Y1, Y2. Remote RESET is made possible by connecting an external pushbutton.

Tripping unit “Multiple motor protection” 3RN10 62Up to six sensor circuits, all of which affect the output relay, can be connected to the 3RN10 62 tripping unit. Simulta-neous protection of up to 6 mo-tors is an advantage when group drives are used (e.g. if one motor is overloaded, all mo-tors of the group are switched off). In addition to the red LED “TRIPPED” which signals the switching state of the tripping unit, each sensor circuit is pro-vided with an LED which indi-cates the sensor circuit oper-ated when tripping occurs. Sensor circuits that are not needed must be short-circuited.

The reset function of the 3RN10 62 tripping units can be changed from manual RESET to automatic RESET by jumper-ing the Y1, Y2 terminals. Remote RESET is made possi-ble by connecting an external pushbutton.

Cage Clamp connection1)The 3RN1 thermistor motor pro-tectors are available with Cage Clamp connection as an alter-native to screw connection.Cage Clamp connection is: • fast because wire sleeves

can be dropped and later checks are superfluous,

• reliable because it is resistant to vibrations, thus ensuring maximum contact reliability,

• maintenance-free because checks of screwed connec-tions after transportation are superfluous.

NotesV In the case of tripping units actuated by DC, electrical isola-tion must be ensured by a bat-tery or a safety transformer to DIN VDE 0551.V When use is made of trip-ping units with auto reset in the EEx e area, the control wiring must ensure that the monitored machine will not automatically restart. V In the case of tripping units without short-circuit detection, the sensor resistor must be measured with a suitable mea-suring instrument during com-missioning. If the resistance is < 50 ohm, the sensor circuit must be checked for a short-cir-cuit. V When use is made of 3RN 1000 (no Ready LED), and of the 3RN10 13-1BW01 unit (no change in switching state of the auxiliary switching elements in the event of control failure) for the protection of EEx e motors, separate monitoring of the con-trol voltage is recommended.

Function of the tripping unit in case of control-voltage failure

Equipped with fault memory

Function monostable monostable bistable

at

3RN10 003RN10 103RN10 11

3RN10 123RN10 13-. . . . 03RN10 223RN10 62

3RN10 13-. . .01

Control-voltage failure

Unit trips Unit trips No change in the switching state of the auxiliary contactsReturn of the

control voltage without trip

Unit resets Unit resets

Return of the control voltage after trip

Unit resets Unit remains tripped




Description

Protecting the windings of three-phase transformersA 3RN10 22 thermistor protec-tion combination unit for alarm and tripping and e.g. a 3RP15 time-delay relay can be used for protecting the windings of three-phase dry-type transform-ers by means of PTC Tempera-ture Sensors when the opera-tional voltage of the thermistor motor protection tripping unit must be taken from the main power supply system. The K4 contactor relay then operates on the open-circuit shunt re-lease of the high-voltage switch.

Mode of operationWhen the primary side of the transformer is energized, the voltage on the secondary side builds up to its maximum value within 1.5 s. Since the 3RN1 tripping unit only responds at 0.8 × Us , it would cause the trip-ping of the circuit-breaker via its

open circuit shunt release as long as the operational voltage is available via the still-closed contacts 95-98 of the contactor K4.In order to prevent this, termi-nals K07 and K97 are not ener-gized until it is certain that the 3RN1 trippping units have picked up and the auxiliary cir-cuits have switched to the “Ready” position. The K3 and K4 contactors are not operated until the rated operating temper-ture TNF of each sensor is ex-ceeded. The trippping unit should be switched to “Automatic RESET” (wire jumper between terminals Y1 and Y2). This ensures that the 3UN22 tripping unit is reset when the transformer is turned on again after tripping.The time-delay relay should nor-mally be set to a delay time of ≥ 1.5 s

PTB Test ReportIn conjunction with PTC ther-mistors acc. to DIN VDE 0660 Parts 302 and 303 and DIN 44 081/DIN 40 082 the trip-ping units with alternating cur-rent operation1) are approved for the direct temperature moni-toring of flameproof motors of protection type “increased safety” EEx e and bear the ap-propriate test symbol. The fol-lowing specifications apply:• EN 50 019, • DIN VDE 0170/0171,• DIN VDE 0165, • PTB test regulations

DIN V 0801, Requirement class = AK 3,

• DIN 19 251.With tripping units with DC actu-ation, the electrical isolation must be guaranteed by a bat-tery mains or a safety isolating transformer according to DIN VDE 0551. When 3RN10 13-. . . 01 units(no change of the switching state of the auxiliary contacts in case of control-voltage failure) are used to protect EEx e elec-trical motors, separate monitor-ing of the control voltage is rec-ommended.PTB Approvals No. 3RN10 11/12/13/22/62:PTB EX 3.43-7096/99

WiringThe circuit wiring must be in-stalled as separate control leads. Using the cores of the motor supply leads or other main power cables is not per-missible. If extreme inductive or capacitive interference from parallel power cables is antici-pated, screened leads must be used.Maximum cable length for sen-sor circuit:

Cross-sect. For tripping units

3RN10 003RN10 103RN10 113RN10 123RN10 223RN10 62

3RN10 13

mm2

2.51.50.5

m2 x 28002 x 15002 x 500

m 2)2 x 2502 x 1502 x 50

PTC Temperature SensorsTemperature Sensors having a characteristic complying with DIN VDE 0660 Part 303, DIN 44 081 and DIN 44 082 (e.g. single and triple sensors) can be used with the tripping units.The number of the Temperature Sensors connectable in series depends on the total cold resis-tance. The total cold resistance must not exceed 1.5 kΩ.Resistance temperature char-acteristic of PTC Temperature Sensorswith characteristic (Type A) acc. to DIN VDE 0660 Part 303

4 0 0 0

1 3 3 0

5 5 0

2 5 0

2 0

- 2 0 ° C 0 T N F - 2 0T N F - 5

T N F T N F + 1 5 T

R

N S K - 5 2 9 4 b

T N F + 5

MountingThe 3RN1 tripping units are suit-able for snap-on mounting onto 35 mm standard mounting rails in acc. with EN 50 022 or screw mounting with adapter for screw terminal.Mounting position: any.

Transformer protection with 3RN10 22(diagram: before applying the voltage )

A 2 1 6 1 8

1 5A 1K 5

ϑ

3 x

H 3

N N

H 2

ϑ

3 x

9 5

9 6 9 8

K 4K 3 H 5M 1

K 1

F 2

F 1

K 2H 1

T / R

0 7

0 8 2 T 1 2 T 2 1 T 1 1 T 2 A 2

Y 1 Y 2 A 1

NS2-5265d

F e e d e r s

A l a r m R e a d y T r i p p i n g

A

F1 FuseF2 3RN10 22K3, K4 Contactor relays (e. g. 3RH1)K5 Time-lag relay (z.B. 3RP15)H5 Luminous indicator

“Protective unit ready”

1) With DC operation, the control circuit and the sensor circuit are not electri-cally isolated from each other.

2) Units with short-circuit detection in the sensor circuit. Up to this maximum cable length, a short-circuit in the sensor circuit is detected. If no short-cir-cuit detection is required, the same cable lengths can be used as shown on the left.





Position of output relay “ready for operation, not tripped”

3RN10 00 3RN10 10 General equipment identification A1, A2 Control-voltage termi-

nalsN AmplifierT/R TEST/RESET buttonY1, Y2 Terminals for remote

RESET⇑ The double arrow iden-

tifies an operating state of the contact which deviates from the nor-mal in accordance with DIN 40 900 Part 7 (here: position of the contacts with control voltage applied to terminals A1 and A2)

Equipment identification for 3RN10H1 LED “READY”H2 LED “TRIPPED”K Output relayT1, T2 Terminals for sensor

loops

Equipment identification for 3RN10 22H1 LED “READY”H2 LED “TRIPPED”H3 LED “ALARM”K1, K2 Output relay1T1 to 2T2 Terminals for sensor

loops

Equipment identification for 3RN10 62H1 to H6 LEDs of the tripped

sensor loopsH7 LED “READY”H8 TED “TRIPPED”K Output relay1T1, 1T2 Terminals for to 1st sensor loop6T1, 6T2 Terminals of the 6th

sensor loop

V Apply short-circuit sensor to circuits which are not in use.

3RN10 111) 3RN10 121)

3RN10 13-. . . . 0

3RN10 13-. . . . 1 (bistable)

3RN10 22

3RN10 62

A 1 / 9 5

H 1

T 1 T 2 A 2 9 6 9 8N S K - 1 0 4 4

N H 2 KK

H1

A2T2T1

A1

N

95

96 98NSK-5035

H2

97

K

H1

A2T2T1

A1(A3)

N

95

96 98NSK-5040a

T/R

97

H2 K

H1

A2T2T1

A1(A3)

N

95

96 98NSK-5036a

Y2Y1

T/R

97

H2

K

H 1

N H 2

T 1

T / R

A 2 9 6 9 8

Y 1 Y 2 A 1 9 5

T 2 0 6 0 8

0 5

N S K - 1 0 4 6

K

H 1

N H 2

T 1

T / R

A 2 9 6 9 8

Y 1 Y 2 A 1 9 5

T 2 0 6 0 8

0 5

N S K - 1 0 4 7

07 Y1 Y2 A1 95

08 2T1 1T1 T2 A2 96 98

K1

H3

N

H2

N H1 K2

NSK-1045bT/R

N 95 97

98

T/R

2T11T1 1T2 A2

Y1 Y2 A1

KH7 H8

H1

H4

2 3

5 6

4T1 5T1 6T1 6T25T24T23T22T2 3T1 96NS2-5270b

1) Control-voltage terminals for 3RN 1011 and 3RN 1012: A1 and A2: DC 24 V or AC 230 V (depending on type) A3 and A2: AC 110 V.




Typical circuit diagrams

3RN10 00 tripping unitSwitching off of a three-phase motor via contactor, momentary-contact signal• The contacts are shown with con-

trol voltage applied to terminals A1 and A2 of the tripping unit.

3RN10 11 tripping unitSwitching off of a three-phase motor via contactor, maintained-contact signal• The contacts are shown with con-


3RN10 12 tripping unitSwitching off of a three-phase motor via contactor, momentary-contact signal• The contacts are shown with con-


General equipment identification A1, A2 Control-voltage

terminals1)F4 Short-circuit fuseN AmplifierS0 OFF buttonS1 ON buttonS2 Main switchS3 Remote RESET buttonT/R TEST/RESET buttonY1, Y2 Terminals for remote

RESET⇑ The double arrow iden-

tifies an operating state of the contact which deviates from the nor-mal in accordance with DIN 40 900, Part 7(here: position of the contacts with control voltage applied to ter-minals A1 and A2)

Equipment identification for 3RN10 units

H1 LED “READY”H2 LED “TRIPPED”H3 Indicator lightK Output relayK1 ContactorT1, T2 Terminals for sen-

sor loops

Equipment identification for 3RN10 22 unitsH1 LED “READY”H2 LED “TRIPPED”H3 LED “ALARM”H4 Indicator lightH5 “ALARM” indicator

lightK1, K2 Output relayK3 Contactor1T1 to 2T2 Terminals for sensor

loops

Equipment identification for 3RN10 62 unitsH1 to H6 LEDs of the tripped sensor

loopsH7 LED “READY”H8 LED “TRIPPED”H9 Indicator lightK Output relayK6 Contactor1T1, 1T2 Terminals forto 1st sensor loop6T1, 6T2 Terminals for

6th sensor loop

V Apply short-circuit sensor to circuits which are not in use.

3RN10 22 tripping unit (alarm + trip)

Switching off of a three-phase motor via contactor, alarm via an output relay, pushbutton operation• The contacts are shown with control voltage applied to terminals A1 and A2

of the tripping unit.

3RN10 62 tripping unit (multiple motor protection)

Switching off of 6 three-phase motors via contactors, momentary-contact signal• The contacts are shown with control voltage applied to terminals A1 and A2

of the tripping unit.

K 1

KH 2

A 1 / 9 5

N

H 3K 1

S 0

S 1

N S K - 1 0 4 3

F 4

L 1

S 2

T 1 T 2 A 2 9 6 9 8

N

H 1

ϑ +

3 x

1 ~ 5 0 H z , 2 3 0 V

ϑ +

9 5 9 7

K 1

KH 2

T / R

A 1

N

H 3S 1

N S K - 5 8 4 3 a

F 4

L 1 1 5 0 H z , 2 2 0 V~

3 x

S 2

T 1 T 2 A 2 9 6 9 8

N

H 19 5 9 7

K 1

KH 2

T / R

Y 1 Y 2 A 1

N

H 3K 1

S 0

S 1

N S K - 5 8 4 4 a

F 4

L 1 1 5 0 H z , 2 2 0 V~

S 2

S 3

T 1 T 2 A 2 9 6 9 8

N

H 1

ϑ +

3 x

ϑ

H3

N

95

K3M1

K1 K2H1

T/R

07 Y1 Y2 A1

H5

N

H4K3

S0

S1

NSK-1042a

F4

L1 1 ~ 50 Hz, 220V

3x

S2

S3

08 2T1 T2 1T1 T2 A2 96 98

N

H2

ϑ

3x

N 9 5 9 7

M 1

Y 1 Y 2 A 1

N

S 0

S 1

F 4

L 1 1 5 0 H z , 2 2 0 V~

KH 7 H 8

H 9K 6

K 6

H 1

H 4

2 3

5 6

ϑ

4 T 1 4 T 2

2 3 4 5 6N S K - 5 8 4 6 a

3 x

S 2

S 3

T / R

2 T 11 T 1 1 T 2 3 T 1 3 T 22 T 2 5 T 1 5 T 2 6 T 1 6 T 2 A 2 9 6 9 8

ϑ

3 x

ϑ

3 x

ϑ

3 x

ϑ

3 x

ϑ

3 x

1) Control-voltage terminals for 3RN 1011 and 3RN 1012: A1 and A2: DC 24 V or AC 230 V (depending on type) A3 and A4: AC 110 V.

7PX80 Direct Voltage Adapter



7PX80 Direct Voltage Adapter

With the 7PX80 40-0A direct voltage adapter, it is possible to use the solid-state overload re-lays 3RB12 ..-..B.. with a voltage in the range from 30 to 120 V DC.

Parallel connection of direct voltage adapters is not al-lowed.By means of an in-phase regu-lator, the input voltage is brought down to 19 to 24 V DC (non-floating). As a result of the regulator’s operating principle, the difference between the input voltage and the output voltage is converted into heat losses. It is therefore recommended that a distance of 10 mm is kept from adjacent units.The direct voltage adapter can also be used to advantage where the input voltage fluctu-ates in a range other than 0.8 to 1.1 × UN.

The number of units which can be operated with the direct volt-age adapter depends on their current input and the maximum input voltage (see load dia-gram).

Design For type Direct voltage adapter Weight Pack.

Order No. Price approx.kg Unit

7PX80 direct voltage adapter For surface mountingSnapping onto 35 mmstandard mounting railin acc. with EN 50 002and screw mounting

3RB12 .. - .. B.. 7PX80 40-0A 0.3 1

Technical data

Direct voltage adapterInput voltage range 30 V DC to 240 V Load diagram

Coil voltage tolerance (A1/A2)Output voltage (B1/A2) 19 V DC to 24 V

Permissible ambient temperature –25 °C to +55 °C

Continuous energizing Permissible

Rated insulation voltage acc. to DIN VDE 0110, Group C

300 V DC

Max. power loss PVmax 13 W

Current input at 24 V DC 3 A

2 0 0

1 6 0

1 2 0

8 0

4 0

m A

3 04 0 8 0

1 1 01 2 0 1 6 0 2 0 0 2 4 0V

P m a x .

A

V

E

NSK-5289b

I

A

Output current

I n p u t v o l t a g e V

Description

4/47

3UL2 Residual-Current Devices

Siemens NS K · 2000

Selection and ordering data3UL2 Residual-Current Devices

Please inquire about other operating voltages and tripping times.

Window size

Operating voltage of testfacility

Rated fault currentI∆n

Also usable for 3RB12 overload relays 1)

Residual-currentdevice without ON-delayTripping time < 30 ms

Residual-current devicewith ON-delayTripping time < 200 ms

Weight

Order No.Preferred type

Price

Order No.Preferred type

Price approx.kg

Tripping relay– 220 to 415 to 1 3UL21 00-0B 3UL21 10-0B 0.22

400 to 690 to 1 3UL21 00-0C 3UL21 10-0C

220 to 415 6 to 40 3UL21 00-1B 3UL21 10-1B400 to 690 6 to 40 3UL21 00-1C 3UL21 10-1C

Summation current transformer40 – 0.3 x 3UL22 01-1A – 0.35

0.5 x 3UL22 01-2A –1 x 3UL22 01-3A 3UL22 11-3A

65 – 0.3 x 3UL22 02-1A – 0.60.5 x 3UL22 02-2A –1 x 3UL22 02-3A 3UL22 12-3A6 3UL22 02-1B 3UL22 12-1B

10 3UL22 02-2B 3UL22 12-2B16 3UL22 02-3B 3UL22 12-3B25 3UL22 02-4B 3UL22 12-4B40 3UL22 02-5B 3UL22 12-5B

120 – 0.3 x 3UL22 03-1A – 2.50.5 x 3UL22 03-2A –1 x 3UL22 03-3A 3UL22 13-3A6 3UL22 03-1B 3UL22 13-1B

10 3UL22 03-2B 3UL22 13-2B16 3UL22 03-3B 3UL22 13-3B25 3UL22 03-4B 3UL22 13-4B40 3UL22 03-5B 3UL22 13-5B

Technical data

Tripping relayType 3UL21 0, 3UL21 1

Rated insulationvoltage Ui AC 50/60 Hz 690 V

Test facilitySuitable for AC 50/60 Hzoperating voltage AC 50/60 Hz

220 to 415 V400 to 690 V

Tripping time of residual-current device3UL21 00 without ON-delay3UL21 10 with ON-delay

< 30 ms< 200 ms

Degree of protection IP 20 acc. to DIN 40 050 andIEC 529

Auxiliary switch 1 NO + 1 NC

Rated operational current Ie/AC-15at 380 V

3 A

Permissible ambient temperature –20 °C to +70 °C

Permissible lengths of connections(incoming and outgoing) betweensummation current transformer and trip-ping relay

Conductor cross section1.5 mm2 ≤ 80 m2.5 mm2 ≤ 140 m

2 x 2.5 mm2 ≤ 280 m

Summation current transformerType 3UL22 .1 3UL22 .2 3UL22 .3

Rated insulationvoltage Ui AC 50/60 Hz 690 V 690 V 1000 V

Rated fault current I∆nwithout ON-delay Awith ON-delay A

0.3 to 11

0.3 to 401 to 40

0.3 to 401 to 40

Permissible ambient temperature °C –20 to +70

–20 to +70

–20 to +70

Window size mm 40 65 120

For PROTODUR cable(can be passed through) max. mm2 4 x 95 4 x 240 8 x 300



Technical data

ApplicationThe purpose of the residual-cur-rent device protection is to pre-vent the build-up of excessive contact voltage on exposed conductive parts by interrupting all phases and the neutral of the supply line within 0.2 s, in the event of a fault current which ex-ceeds a specified value.In conjunction with circuit-breakers, the residual-current device supplements the earth-leakage circuit-breaker ranges 5SV and 5SZ.The residual-current device is also suitable for earth-fault mon-itoring.The version with ON-delay per-mits trip discrimination with load-side circuit-breakers, which are combined with instan-taneous residual-current de-vices.The 3UL21 tripping relays and the associated, but separate, 3UL22 summation current transformers are resistant to cli-matic changes.

Design and mode of operationThe tripping relay consists of a tripping mechanism and an auxiliary switch 1 NO + 1 NC. These components are acco-modated in a moulded-plastic enclosure. The auxiliary switch acts, for example, on the under-voltage release of the associ-ated circuit-breaker (see Page 4/49).The separate summation cur-rent transformer is likewise en-capsulated in a moulded-plas-tic enclosure.

Switching capacity and short-circuit protection of auxiliary switchConventional thermal currentIth

Making and breaking capacity with AC Making and breaking capacity with DC FuseMax. rated current

Rated voltage Rated operational Rated voltage Rated operational of short-circuit fuse of a miniature circuit-breaker(see Catalog I 2.1)

currentIe/AC-15

currentIe/AC-15

DIAZED NEOZEDUtilization cat. gL/gG

DIAZEDQuick-resp.

A AC V A DC V A A A A

6 up to 230 3 24 2 10 10 66 380/400 3 110 0.4 10 10 66 500 1.5 220 0.2 10 10 6

Description

The main conductors, including the neutral conductor, are passed through the window in the summation current trans-former.The summation current trans-formers are provided with screening tubes, which prevent erroneous tripping due to high motor starting currents.If delayed tripping is required, the summation current trans-former with ON-delay must be combined with the correspond-ing tripping relay.A blue resetting button R, with which the self-inhibiting relay must be enabled after tripping, is located on the front of the re-lay enclosure. A black test butt-ton T for checking the residual-current device is also provided.When the test button is pressed, the residual-current device must trip the associated circuit-breaker via the auxiliary switch (refer to typical circuit dia-grams). The test button should be pressed occasionally to check the residual-current de-vice for correct functioning.For r.c.d. protection, all accessi-bly exposed conductive parts are earthed, insofar as they are not automatically and perma-nently connected to earth.The neutral conductor must, however, not be earthed again after the summation current transformer, otherwise proper functioning of the residual-cur-rent device is not ensured.

The maximum resistance to earth RA, related to the permissi-ble continuous contact voltages UL can be obtained from the fol-lowing expression:

Permissible resistance to earth RA

When an installation is function-ing normally, the sum of the cur-rents and their field in the sum-mation current transformer is zero, i. e. no voltage is induced in the secondary winding. If, however, an insulation defect after the residual-current device allows a fault current to flow to earth, the resulting differential current energizes the second-ary winding of the transformer. This occurs irrespective of whether the earth fault occurs on the equipment being pro-tected or in one of the lines. The voltage induced in the second-ary winding acts on the coil of a holding magnet; the built-in aux-iliary switch, 1 NO + 1 NC with reclosing lock-out, then trips the circuit-breaker or causes the contactor to drop out.Depending on local conditions, the summation current trans-former can be connected either ahead of, or after, the circuit-breaker.

RA = Permissible contact voltage ULRated fault current I∆n

Rated faultcurrent I∆n

Permissible resis-tance to earth RA at contact voltage UL

AAC 50 VΩ

AC 25 VΩ

0.30.31

1040

1661005051.25

8350252.50.6

The test resistor of the tripping relay is not continuously rated. It must therefore be ensured that the supply for the test circuit is interrupted when the relay picks up. This applies to voltage tap-ping after the associated circuit-breaker (refer to page 4/49). If the voltage is tapped ahead of the circuit-breaker or if a differ-ent voltage source is selected, the test circuit must be interrupt-ed with auxiliary switches 15 to 16 (refer to page 4/49).• Terminals

The terminals of the tripping relays and summation current transformers are of the SIGUT type. Two solid (1 to 2.5) mm2

conductors or two finely-stranded (0.75 to 1.5) mm2 conductors with end sleeves can be connected.

• Mounting positionThe tripping relays and sum-mation current transformers can be mounted in any posi-tion.



Typical circuit diagrams

Protective circuit with circuit-breaker and residual-current device.Tapping of test-circuit voltage after circuit-breaker.

In line with DIN 40 713, the symbols used in the internal circuit diagrams provide information on the type, configuration and mode of opera-tion of the devices, but not on their design.

Protective circuit with circuit-breaker and residual-current device.Tapping of test-circuit voltage ahead of circuit-breaker, or external voltage source(Interruption with auxiliary switches 15 to 16 required)

F1, F2 Control-circuit fusesF3, F4 Test-circuit fuses

(F4 can be dispensed with if the test-circuit voltage is tapped off between a phase and the neutral conductor)

F5 Tripping relayF6 Fault-current releaseF7 Undervoltage releaseH1 Indication “Malfunction due to fault current”H2 Indication “Ready”Q1 Circuit-breakerRESET Resetting button “R”R1 Test resistorT1 Summation current transformerS1 Test button “T”

N S K - 5 0 6 1 b

2 7 1 52 8 1 6

2 4 6 8

1 3 5 7

I > > I > >U <

I > >

I >R E S E T

L 1 L 2 L 3 N

F 1

Q 1D 2

F 7

D 1

C 1

C 2

Z 1

Z 2

T 1

F 6

A 1

A 2

Z 3

R 1

Z 4

F 3 F 4S 1

F 5

H 1

A

( B u t t o n " R " )

( B u t t o n " T " )

L o a d

2 7 1 52 8 1 6

2 4 6 8

1 3 5 7

U <I > > I > > I > >

I >

N S K - 5 0 6 5 b

F 1

L 1

F 2

N ( L 2 )

Q 1

D 2

L 1 L 2 L 3 N

H 1 H 2F 7

D 1

F 6C 1

C 2

Z 1

Z 2

T 1

A 1

S 1

Z 4

R 1

R E S E T

F 5

A 2

Z 3

A L o a d

( B u t t o n " T " )

( B u t t o n " R " )

C o n t r o l s u p p l y v o l t a g e

Thermally Delayed Overload Relays

Dimensions



Screw connection

Lateral clearance to earthed components mimimum 6 mm.

3RU11 16 -..B0 overload relays Size S00 with accessories

3RU11 16, 3RB10 16 overload relays Size S00with adapter for installation as a single unit with accessories

4) Module for remote RESET

3RU11 26-..B., 3RB10 26 overload relays Size S0with adapter for installation as a single unit

3RB10 36, 3RU11 36-..B. overload relays Size S2with adapter for installation as a single unit

3RB10 46, 3RU1146-..B. overload relays Size S3with adapter for installation as a single unit

5) Mounting on 35 mm standard mounting rail,15 mm deep acc. to EN 50 022or 75 mm standard mounting rail acc. to EN 50 023.

Dimensions for “contactor with fitted overload relays” see Part 3.

1)

3)

2)

3SB1

NS

K-8

631

46

185148

3349

68

5

10 2

44

14

7

61

11

8

15,545

max. 161 max. 8

1) Cable release(400 mm or 600 mm long,mounting at the front or laterally at the holder)

2) Mechanical RESET3) Holder for RESET

4)NSK 8632

5

5 3545

75

4,5

5

68

5

3752533

52

43

87

38

NSK-9303a

445

5 35

85

45

4,5

97

50

4,5

44

6

86

62

5

NSK-9305a

405

5

5,5 4455

54

10

25

,5

91

50

4

5107

51

NSK-9307b

5)

595

62

5

110

5

5 6070

5

7

130

79

57

5



Dimensions

Cage Clamp connection

Lateral clearance to earthed components mimimum 6 mm.

3RU11 16 -..C1 overload relays Size S00with accessories (same construction for sizes S00 to S3).

1) Mechanical RESET2) Cable release

(400 mm or 600 mm long,mounting at the front or laterally on the holder)

3) Holder 4) Remote RESET

3RU11 26-..D0 overload relays Size S0



5) Mounting on 35 mm standard mounting rail,15 mm deep acc. to EN 50 022or 75 mm standard mounting rail acc. to EN 50 023.

Dimensions for “contactor with fitted overload relays” see Part 3.

15,535

59

2

4,5

8

687,5

5

75

1484617,5

185

3)

1)

2)

455

28

NS

K-8

249

4)

3545

59

2

5

4,5

687,5

5 3725

5

57

54

2

12 2

6

NS

K-8

248

H A

RESETSTOP

TEST0 1

4,5

97

50

3545

5

85

5

64

4

8644

5

4,5 62

NS

K-8

265

SIEMENS

5,5

10

2

5,5 4455

91

5

5

45

0

10740

5

51

H A

RESETSTOP

TEST0 1

SIEMENS54

NS

K-8

266

51

20

62

5 6070

11

0

5

5

55

7

13059

5

79

7

H A

RESETSTOP

TEST0 1

SIEMENS

NSK-8267

5)


See Part 3 for dimensions for 3UA60 to 3UA62 overload relays fitted to 3TF contactors


1) For 3UX1 2 links.2) 3UX1 210 links can be used at Ie ≤ 200 A.

3UA60 00for mounting onto contactor andinstallation as a single unit

3UA66, 3UA68for installation as a single unit

3UA61 00, 3UA62 00for mounting onto contactor and for installing as a single unit

Type a b c ∅ d e f

3UA66 00-2K (200 A), -3B3UA66 00-3C (400 A), -3D, -3E3UA68

465052

140146156

697071

91111

160171186

20 x 325 x 430 x 5

* Minimum clearance from earthed components.** Dimension for the square OFF-button (stroke 3 mm);

Dimension for the round RESET-button (stroke 2.5 mm) less 2.5 mm.1) For 35 mm standard mounting rail acc. to EN 50 022.2) For 75 mm standard mounting rail acc. to EN 50 023.3) Height and spacing of the connection rails can be accommodated to

3TF50/3TF52 contactors (not for 3UA61).

NS

K-1

301

15 6,6

40104 77

35

85

107

761

22

143

6 84

1)

37 37

13

1)

143

2)

∅

∅

a a

130

b e

1247750

150

df

2)

2120

220**

145

11c

NS

K-1

302

20

(37)

9

40104 77

35

87

107

∅7

6122

143

6 106 (84)

1)

3)42

3) (37)42

3)

13

1)

∅

Mounting for 3TF52 to 3TF68 contactors, with3UA6 overload relays for installing as a single unit

3TF52 and 3UA62 00,3TF53 and 3UA66

3TF54/3TF55/3TF56and 3UA66

3TF57 and 3UA68 3TF68 and 3UA68

NS

K-5

062

a

a

d

bm

in.

7

NS

K-5

063a

a

b

7 d

fm

in.

NS

K-5

063a

a

b

7 d

fm

in.

NS

K-5

064a

a

7 d

fb

min

.

Contactor Links Overloadrelay

Size Type Type Type a bmin1) d f

8 3TF523TF53

3UX1 2213UX1 210

3UA623UA66

3535

150150

4050

––

10 3TF543TF55

3UX1 2112)3UX1 211

3UA663UA66

3535

6060

5050

130130

12 3TF563TF57

3UX1 2113UX1 218

3UA663UA68

4545

55108

5050

130130

14 3TF68 3UX1 218 3UA68 50 148.5 50 130

Overload Relays


DimensionsOverload Relays

3RB12 solid-state overload relays

3UX1 2.. links

3RB12 46 overload relays 3RB12 5. and 3RB12 62 overload relays

NSK-7048d

7,25070

100

4,5Ø

85

100

127,55

e

b

af

cd

10

12,5

14

idb

gh f

ae

k m

cl

j

n

o

NS

K-7

04

9b

p

Overload relays

a b c d e f Overloadrelays

a b c d e f g h i j k l m n o p

3RB12 46-1E3RB12 46-1P3RB12 46-1Q

151010

293434

242929

474646

–4848

–44

3RB12 53-0F3RB12 57-0K3RB12 62-0L

120145230

858585

155175190

110105120

405070

∅7∅9∅1

425270

3748–

125130135

414655

203040

131151166

7.27.27.2

13––

145160175

468

3UX1 2.. links Links Min. hole pitchcontactorbar tooverloadrelay bar

Terminal covers3TX6 5, 3TX7 4 and3TX7 5 see Part 3.

Type Dim.

a b c c1 d d1 e e1

3UX1 2103UX1 211

165185

1825

1012.5

12.512.5

2328

2828

911

1111

4940 to 50

3UX1 2183UX1 221

290185

2518

12.510

12.510

2823

2823

119

119

10069

N S K - 5 0 7 3 ac

eb e1

d 1

1

a

d

cA

I n s u l a t i o nO v e r l o a d r e l a yc o n n e c t i o n

C o n t a c t o rc o n n e c t i o n

Thermistor Motor Protection

Dimensions


Thermis tor Motor Protect ion

3RN10 thermistor motor protection , 7PX80 direct voltage adapter

3RN10 00 motor protection relays 3RN10 10

3RN10 11, 3RN10 12, 3RN10 13, 3RN10 22 3RN10 62

7PX80 40-0A

22,588865

80

57

74

62

14,4

NS

K-9

82

2

10

22,5

57

28

10

8886

5

80

74

62

NS

K-9

82

1

NS

K-9

82

0

8886

522,5

14,4

10

0

57

28

10

80

74

62

875

45

7

81

59

30

63

12

10

4

NS

K-9

82

3

45 95

NS

K-5

07

0b7

7

N SK- 5071

50

M4

35

60

7,5

62,5

5

Residual-Current Devices


DimensionsResidual-Current Dev ices

3UL2 residual-current devices

3UL22 summation current transformer 3UL21 tripping relay

NSK-5280a

a1a2 a3

b5

b2

b3

a4

b1

b 4

a5

c 1 c2 c 3

a6

Z1

A2 Z3

Z2

NSK-5279a

76

10010,5 6,295 10

15

35

4,8

60

7 35

10

455

90

Type a1 a2 a3 a4 a5 a6 b1 b2 b3 b4 b5 c1 c2 c3

3UL22 .1-A3UL22 .2-A3UL22 .3-A

100125200

7595

165

101020

151520

for M 4for M 4for M 4

80100170

85110200

72.597.5

190

42.555

100

7.57.5

10

4065

120

657085

506070

404555

27overload relays overview - iansystem.com · thermistor motor protection device 3rn10 ptcs ......

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