series c: mdl-frame - eaton.com · table 3. mdl breaker assembly mdl 3 800 f performance at 480 vac...

Time Current Curves TD012036EN Effective December 2015

ContentsDescription Page

Catalog Number Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Digitrip RMS 310+ Electronic Trip Units

MDL, HMDL, CMDL, CHMDL, MDLB, HMLDB; 800A; 3- and 4-pole; LS and LSG . . . . . TD012051EN . . . . . . . . .6MDL, HMDL, CMDL, CHMDL, MDLB, HMLDB; 800A; 3- and 4-pole; LSI, LSIG, ALSI, ALSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TD012052EN . . . . . . . .7Ground Fault Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TD012053EN . . . . . . . . .8Maintenance Mode Setting; ALSI and ALSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TD012054EN . . . . . . . . .9

Digitrip RMS 310 Electronic Trip UnitsMDL, HMDL, CMDL, CHMD; 800A; 3- and 4-pole; LS and LSG . . . . . . . . . . . . . . . . . . . . . SC-7204-99 . . . . . . . .10MDL, HMDL, CMDL, and CHMD; 800A 3- and 4-pole; LSI, LSIG, ALSI, ALSIG . . . . . . . . . . SC-6913-98 . . . . . . . .11Ground Fault Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6914-98 . . . . . . . .12

MT Thermal/Magnetic Trip Unit

MDL, HMDL, MDLB, and HMDLB, 300-600A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6911-98 . . . . . . . .13MDL, HMDL, MDLB, and HMDLB, 700-800A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6912-98 . . . . . . . .14

Note:Time/Current characteristic curves for Series C M-frame circuit breakers--voltages shown in curve headings aremaximum at which the breaker may be applied . Interrupting capacity of inidvidual breaker is tabulated on each curve .

Note:The following curves are UL489 Listed for use in North America .The following circuit breakers are derived from Eaton, Westinghouse, or Cutler-Hammer history .

Time Current Curves are engineering reference documents for application and coordination purposes only. For field testing molded case circuit breakers, refer to NEMA AB 4 guidelines.

Series C MDL-Frame 400-800A, 240-600V

otee:N Unless noted below, all curves remain unchanged from their prior revision .

Revision Curve Number Page Date

2 EATON www.eaton.com

Proof 5 — December 14, 2015 9:02 PM

Time Current Curves TD012036ENEffective December 2015

Series CM-Frame

Changed trip labels on page 5

3EATON www.eaton.com


Series CM-Frame

Catalog Number Selection

This information is presented only as an aid to understanding catalog numbers .It is not to be used to build catalog numbers for circuit breakers or trip units .

MDL 3 800 F

Circuit Breaker/Frame Type

MDL, MDLBHMDL, HMDLB

Number of Poles

23

= Two-pole= Three-pole

Circuit Breaker/FrameAmpere Rating

300350400450500600700800

Suffix

FKVWXY

= Frame only= High magnetic molded case switch= 500C (thermal-magnetic trip units only)= Without terminals= Load side terminals only= Line side terminals only

Table 2. Circuit Breaker/Frame

11

MT 3 800 T

Trip Unit Type

MTMES

Number of Poles

23

= Two-pole= Three-pole

Trip UnitAmpere Rating

300350400450500600700800

Suffix

TVLSLSILSGLSIG

= Thermal-magnetic= 500C (thermal-magnetic trip units only)= Digitrip RMS 310= Digitrip RMS 310= Digitrip RMS 310= Digitrip RMS 310

Table 1. Thermal-Magnetic Trip Unit

11

Note

1 Thermal-magnetic only .

4


Series CM-Frame

EATON www.eaton.com

MES 3 800 ALSIG B21

TripUnit Type

MESPoles

3 = Three Amperes

800

Features

BlankB20B21

B22

ZG

= No feature= High load alarm= Ground fault alarm, with trip= Ground fault alarm, no trip= Zone selective interlocking

Trip Unit

LSLSILSGLSIGALSI

ALSIG

= 310+ Electronic LS= 310+ Electronic LSI= 310+ Electronic LSG= 310+ Electronic LSIG= 310+ Electronic LSI with Maintenance Mode= 310+ Electronic LSIG with Maintenance Mode

Table 4. MDL Electronic Trip Unit

MDLB 3 800 F T36 B21 W

Performance at 480 VacPoles

3 = ThreeAmperes

800 Features

BlankB20B21

B22

ZG

= No feature= High load alarm= Ground fault alarm, with trip= Ground fault alarm, no trip= Zone selective interlocking

Trip Unit

T33T32T35T36T38T39

= 310+ Electronic LS= 310+ Electronic LSI= 310+ Electronic LSG= 310+ Electronic LSIG= 310+ Electronic LSI with Maintenance Mode= 310+ Electronic LSIG with Maintenance Mode

FrameDesignation

F

MDLBHMDLBCMDLB

CHMDLB

= 50 kAIC= 65 kAIC= 50 kAIC 100% rated= 65 kAIC 100% rated

Terminals

W = No terminals

Table 3. MDL Breaker Assembly

MDL 3 800 F

Performance at 480 VacPoles

3 = Three Amperes

800

Frame Designation

F

MDLHMDLCMDL

CHMDL

= 50 kAIC= 65 kAIC= 50 kAIC 100% rated= 65 kAIC 100% rated

Table 5. MDL Frame Only

Note

1 Maintenance Mode and ZSI are only available with LSI and LSIG trip units .2 B21 and B22 features available only with LSG, LSIG and ALSIG trip units .3 B2x suffixes cannot be combined with other B2x suffixes .

5


Series CM-Frame

EATON www.eaton.com

Figure 1. Digitrip 310+ Faceplates

ALSIG (With Maintenance Mode)

LS

LSI

LSG

LSIG

ALSI (With Maintenance Mode)

6


Series CM-Frame

EATON www.eaton.com

.

.

.

.

.

.

0.01

2

10

20

30

405060708090

100

1000900800700600500400

300

200

2000

3000

400050006000700080009000

10,000

0.02

0.03

0.040.050.060.070.080.09

0.1

0.2

0.3

0.40.50.60.70.80.9

etu

niM 1

sru

oH 2

sd

noce

S ni e

miT

ru

oH 1

Current in Multiples of (Ir)1 2 3 4 5 7 10 20 300.5 0.7

Current in Multiples of (In)Current in Multiples of (Ir)I 2t Trip Style (LS and LSG)

12

1 2 3 4 5 7 10 20 30 40 50 70 100 2 3 4 5 7 10 20 30 40 50 70 1000.5 0.7 12

Available Short DelayPickup Settings

2–8 x Ir ±5%(See Notes 7 and 10)

ApplicationDetermines

End of Curve

InstantaneousOverride

(See Note 10)

I 2t Short Delay(See Note 8)

67 ms

See Note 9

0.01

0.02

0.03

0.040.050.060.070.080.090.1

0.2

0.3

sd

noc

eS

ni e

miT

3

456789

Maximum TotalClearing Time

Minimum TotalClearing Time

1.15

Available Long Delay Time(Seconds +0/–30%):

2*, 4*, 7*, 10, 12, 15*, 20, 24**Shown below at 6x

15

24

1

7

4

2

2 4

3

5

7

8

6

.

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)

Series C M-Frame Circuit Breakers (800A)

Catalog Types: MDL, HMDL, CMDL, CHMDL, MDLB, HMLDB

Trip Unit Types: 33 (LS), 35 (LSG)

Figure 2. Digitrip 310+ Trip Units (800A), Long Delay Response and Short Delay with I2T Response Curve and Override(LS, LSG) - TD012051EN, October 2014

MDL, MDLB, CMDL 65 50 25HMDL, HMDLB, CHMDL 100 65 35

Interrupting RatingUL/CSA rms Sym. kA, 50/60 Hz

Breaker Type 240V 480V 600V

Notes:

1 Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 Application frequency is 50/60 Hertz .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay Pickup = 115% of Ir) . Range is 110%–120% .

6 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

7 The Short Delay Pick Up has 7 settings/positions, 2–8 Ir8 Short Delay I2T band has a tolerance of ±15% .

9 Breakpoint back to FLAT response occurs at 8x IR for upper line of the I2T curve .

10 For high fault current levels, an additional fixed instantaneous hardware override is provided at 6800A (Tolerance ±15%) .

A 320AB 400AC 450AD 500AE 600AF 630AG 700AH 800A

Available Sensors Amperes (Ir)/(In) 800A

7


Series CM-Frame

EATON www.eaton.com

.

.

.

.

.

1 2 3 4 5 7 10 20 300.5 0.7 12

1000900800

2000

3000

50006000700080009000

10,000

30

405060708090

100

700600500400

300

200

4000

etu

niM 1

sru

oH 2

ru

oH 1

0.01

2

0.02

0.03

0.040.050.060.070.080.090.1

0.2

0.3

0.40.50.60.70.80.9

3

456789

10

20

sd

noce

S ni e

miT

Maximum TotalClearing Time

1.15

Available Long Delay Time

(Seconds +0/–30%):2*, 4*, 7*, 10, 12, 15*, 20, 24*

*Shown below at 6x

MinimumTotalClearingTime

Available ShortDelay PickupSettings 2–8,

x Ir ±5%(See Note 7)

300 ms(P, Q, R)

120 ms(M, N, O)

Inst.(J, K, L)

1

Current in Multiples of (Ir)

Current in Multiples of (Ir)

Current in Multiples of (In)1 2 3 4 5 7 10 20.5 0.7

Adjustable Flat Trip Style (LSI, LSIG, ALSI, ALSIG)

12 001070504030201743 50.01

0.02

0.03

0.040.050.060.070.080.090.1

0.2

0.3

0.4

sd

noc

eS

ni e

miT

ApplicationDetermines

End of Curve

InstantaneousOverride (See Note 8)

20 30 40 50 70 100

7

2 4

3

5

6

8

2

4

7

15

24

Figure 3. Digitrip 310+ Trip Units (800A), Long Delay Response and Short Delay with Flat Response Curve and Override(LSI, LSIG, ALSI, ALSIG) - TD012052EN, October 2014

Digitrip 310+ Circuit Breaker Time/Current Curves (Phase Current)



Trip Unit Types: 32 (LSI), 36 (LSIG), 38 (ALSI), and 39 (ALSIG)

Notes:

1 Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton . Temperatures above +88°C cause an over-temperature protection trip .

2 Application frequency is 50/60 Hertz .

3 There is a memory effect that can act to shorten the long delay . The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or the circuit breaker itself . A subsequent overload will cause the circuit breaker to trip in shorter time than normal . The amount of time reduction is inverse to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset the memory .

4 The right portion of the curve is determined by the interrupting rating of the circuit breaker .

5 The left portion of the curve is shown as a multiple of the Long Delay Setting . (Long Delay) . Range is 110%–120% .

6 Total clearing times shown include the response times of the trip unit, the breaker Pickup = 115% of Ir opening, and the interruption of the current .

7 The Short Delay Pick Up has 7 settings/positions, 2–8 IR8 For high fault current levels, an additional fixed instantaneous hardware override is provided at 5620A (Tolerance ±15%) .

A 320AB 400AC 450AD 500AE 600AF 630AG 700AH 800A

Available Sensors Amperes (Ir)/(In) 800A

MDL, MDLB, CMDL 65 50 25HMDL, HMDLB, CHMDL 100 65 35

Interrupting RatingUL/CSA rms Sym. kA, 50/60 Hz

Breaker Type 240V 480V 600V

8


Series CM-Frame

EATON www.eaton.com

0.01

2

3

4

56

8

10

20

30

40

5060708090

100

1000900800700600500

400

300

200

0.02

0.03

0.04

0.050.060.070.080.090.1

0.2

0.3

0.40.50.60.70.80.9

1

7

9

2000

3000

4000

50006000700080009000

10,000

etu

niM 1

Ground Current in Multiple of (In)0.1 0.2 0.3 0.4 0.5 0.7 1 2

0.1 0.2 0.3 0.4 0.5 0.7 1 2

Ground Fault Pickup Settings(Tolerance ±10%)

0.4X

0.3X

0.2X 1X0.6X

0.8X

Inst.(J, M, P)

120 ms(K, N, Q)

300 ms(L, O, R)

sd

noce

S ni e

miT

Figure 4. Ground Fault Delay Response Curve (LSG, LSIG, ALSIG) - Curve Number TD012053EN

Digitrip 310+ Circuit Breaker Time/Current Curves (Ground Current)



Trip Unit Types: LSG, LSIG, ALSIG

Notes:

Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere deratingfor ambient above 40°C, refer to Eaton .

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 .For field testing using primary injection methods, follow NEMA publications

9


Series CM-Frame

EATON www.eaton.com

Current in Multiples of Rating ( )In

.01

2

.02

.03

.04

.05

.06

.07

.08

.09.1

.2

.3

.4

.5

.6

.7

.8

.91

3

4

5

6789

10

1 2 3 4.5 .6 .7 .8 .9 10 20 30 40 505 6 7 8 9

2.5

Maintenance Mode Trip

TIM

EIN

SE

CO

ND

S

Applicationdeterminesend of curve

.

Figure 5. Maintenance Mode Setting (ALSI, ALSIG) - Curver Number - TD012054EN, October 2014

Digitrip 310+ Circuit Breaker Time/Current Curves

Maintenance Mode Setting

Trip Unit Types: 38 (ALSI) and 39 (ALSIG)

Series C M-Frame Trip Unit Nameplates

Notes:

1 The Maintenance Mode feature must be ENABLED via application of 24 Vdc for these curves to apply . The blue LED is lit when in Maintenance Mode .

2 The end of the curve is determined by the interrupting rating of the circuit breaker .

3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .

4 Nominal Values (Pickup) (Tolerance is ±15%) 2 .5 x In .

5 The total clearing times shown are conservative and consider the maximum response time of the trip unit, the circuit breaker opening, and the interruption of the current in the worst case conditions such as: maximum rated voltages, single-phase interruption, and minimum power factor . Faster clearing times are possible depending on the specific system conditions .

Contact Eaton for additional information .

Ir = Continuous Current Setting or Rating Plug Value, Is = Current Sensor Frame Rating,In = Rating Plug Value, Ig = Ground Current Pickup Multiplier, Ii = Instantaneous Override Pickup .

Left Side of Breaker

YellowBlack

Blue

Red

24 Vdc

Relay Wiring

NOC

ALSI

ALSIG

6X

8X

4X

7X

2X

Long Delay �Minimum TotalClearing Time

Long Delay �Maximum TotalClearing Time

Standard FixedRating Plug

Short DelayPick UpSettings(Tolerance 10%)

5X

3X

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In )

.5

.5

TIM

E IN

SE

CO

ND

S

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 H

OU

R1

MIN

UTE

2 H

OU

RS

20106. 8. 1

1.8.6

CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)

.7 .9 6 7 8 9

20102 6 7 8 9.7 .9

Fixed InstantaneousOverride �

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SE

CO

ND

S

30,0

00

40,0

00

50,0

00

100,

000

.02

.03

.04

.05

InterruptingRatingDeterminesEnd ofCurve �

CURRENT IN AMPERES

2 3 4 5

+

3 4 5

1.15

Figure 6. MDL, HMDL, CMDL, and CHMDL, types MES3800LS and MES3800LSG - Curve Number SC-7204-99, June 2007

Circuit Breaker Time/Current Curves (Phase Current)

Series C M-Frame Circuit Breakers

Equipped With Type MES Digitrip RMS 310 Trip Units

Catalog Types: MES3800LS and MES3800LSG Digitrip RMS 310 Trip Units for use with Circuit Breaker Types MDL, HMDL, CMDL and CHMDL 3 Poles .

Fixed Short Delay Time Typical Trip Unit Nameplate

Engaged

Remove

Cat.

In

Digitrip RMS 310 Rating Plug

Push to Trip

Short DelayPickup x In

5

72 8

4 6 Digitrip RMS 310Trip Unit40oC Ambient

Test

3

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 .For field testing using primary injection methods, follow NEMA AB4 publications .

Calibration response in short delay pick-up range is same for 1, 2 or 3 poles in series .

There is a memory effect that can act to shorten the long delay . The memory effect comesinto play if a current above the long delay pick-up value exists for a time and then is clearedby the tripping of a downstream device or the circuit breaker itself . A subsequent overloadwill cause the circuit breaker to trip in shorter time than normal . The amount of time delayreduction is inverse to the amount of time that has elapsed since the previous overload .Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton .

2 For high fault current levels a fixed instantaneous override is provided at 6800A . (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long delay pickup is 115% of In, +/- 15% .

800 Fixed 8MES800T 1600-6400700 Fixed 8MES700T 1400-5600600 Fixed 8MES600T 1200-4800500 Fixed 8MES500T 1000-4000400 Fixed 8MES400T 800-3200400, 500, 600, 800 Adjustable A8MES800T1 800-6400

Ampere Rating(In)

Available Rating Plugs

Type

Rating PlugCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym. kA, 50/60 Hz

MDL, MDLB, CMDL, CMDLB 65 50 25HMDL, HMDLB, CHMDL, CHMDL 100 65 35

240V 480V 600V Breaker Type

IEC 60947-2 rms Sym. kA, 50/60 Hz

Icu Ics Icu Ics Icu IcsMDL, MDLB, CMDL, CMDLB 65 65 50 50 20 10HMDL, HMDLB, CHMDL, CHMDL 100 100 70 50 25 13

240V 380/415V 690VBreaker Type

Utilization Category AUIMP = 8 kV

Interrupting Rating

Types MDL, HMDL, CMDL, and CHMDL Equipped with Type MES Digitrip RMS 310 Trip Units, Types MES3800LS and MES3800LSG



Series CM-Frame

6X

8X

4X

7X

3X

2X

Standard FixedRating Plug

100 ms

300 ms

5X

TIM

E IN

SE

CO

ND

S

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 H

OU

R1

MIN

UTE

2 H

OU

RS


.5

.5 20106. 8. 1

1.8.6


.7 .9 6 7 8 9

20102 6 7 8 9

Short DelayPickupSettings(Tolerance+10%)

Long Delay �Minimum TotalClearing Time

Long Delay �Maximum TotalClearing Time

.7 .9

Fixed InstantaneousOverride �

InterruptingRatingDeterminesEnd ofCurve �

10,0

00

.1

.01

1000

5000

4000

3000

2000

20,0

00

.001

SE

CO

ND

S

CURRENT IN AMPS

30,0

00

40,0

00

50,0

00

100,

000

.02

.03

.04

.05

200 ms

I

2 3 4 5

3 4 5

1.15

Figure 7. MDL, HMDL, CMDL, and CHMDL, types MES3800LSI and MES3800LSIG – Curve Number - SC-6913-98, June 2007

Circuit Breaker Time/Current Curves (Phase Current)


Equipped With Type MES Digitrip RMS 310 Trip Units

Catalog Types: MES3800LSI and MES3800LSIGDigitrip RMS 310 Trip Units for use

with Circuit Breaker Types MDL, HMDL, CMDL, CHMDL 3 Poles .

Adjustable Short Delay Time Typical Trip Unit Nameplate

Engaged

Remove

Cat.

In


Push to TripDigitrip RMS 310Trip Unit40oC Ambient

Test

5

7 32 8

4 6


300

100I

200

TimeMIsec

Notes:

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 .For field testing using primary injection methods, follow NEMA AB4 publications .

Calibration response in short delay pick-up range is same for 1, 2 or 3 poles in series .

There is a memory effect that can act to shorten the long delay . The memory effect comesinto play if a current above the long delay pick-up value exists for a time and then is clearedby the tripping of a downstream device or the circuit breaker itself . A subsequent overloadwill cause the circuit breaker to trip in shorter time than normal . The amount of time delayreduction is inverse to the amount of time that has elapsed since the previous overload .Approximately five minutes is required between overloads to completely reset the memory .

1 Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton .

2 For high fault current levels a fixed instantaneous override is provided at 6800A . (Tolerance ±15%) .

3 The end of the curve is determined by the interrupting rating of the circuit breaker . See above tabulation .

4 Long delay pickup is 115% of In, +/- 5% .

800 Fixed 8MES800T 1600-6400700 Fixed 8MES700T 1400-5600600 Fixed 8MES600T 1200-4800500 Fixed 8MES500T 1000-4000400 Fixed 8MES400T 800-3200400, 500, 600, 800 Adjustable A8MES800T1 800-6400

Ampere Rating(In)

Available Rating Plugs

Type

Rating PlugCatalogNumber

Short DelayPickup RangeAmperes

UL/CSA rms Sym. kA, 50/60 Hz

MDL, MDLB, CMDL, CMDLB 65 50 25HMDL, HMDLB, CHMDL, CHMDL 100 65 35

240V 480V 600V Breaker Type

IEC 60947-2 rms Sym. kA, 50/60 Hz

Icu Ics Icu Ics Icu IcsMDL, MDLB, CMDL, CMDLB 65 65 50 50 20 10HMDL, HMDLB, CHMDL, CHMDL 100 100 70 50 25 13

240V 380/415V 690VBreaker Type


Interrupting Rating

Types MDL, HMDL, CMDL, and CHMDL Equipped with Type MES Digitrip RMS 310 Trip Units, Types MES3800LSI and MES3800LSIG


Series CM-Frame


MaximumMinimum

Maximum SinglePole Trip Timesat 25oC 1

Adjustable Magnetic Trip

5X 10X+20% 10%

TypicalTrip UnitNameplate

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

TIME

IN S

EC

ON

DS

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR

1 MIN

UTE

2 HO

UR

S

TIM

E IN

SE

CO

ND

S

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 H

OU

R1

MIN

UTE

2 H

OU

RS

100

8060 907050 1000

800

600

900

700

500

400

300

200

10,0

00

8000

6000

9000

7000

5000

4000

3000

2000

10,0

00

8000

6000

9000

7000

5000

4000

3000

2000

100080

0

600

900

700

500

400

300

200

1008060 907050

100,

000

80,0

00

60,0

00

90,0

00

70,0

00

50,0

00

40,0

00

30,0

00

20,0

00

Maximum Interrupting Time

CURRENT IN PERCENT OF BREAKER TRIP UNIT RATING (In)


Interrupting RatingDetermines End ofCurve

10,000

Individual PoleAdjustments

ThermalMagneticTrip Unit

C Push to Trip

MagneticMultiples Of In

10

7.5

10 5

7.5

10 5

Amps(In)

Cat.No.40oC

7.5

5

+

Ground Fault PickupSettings(Tolerance + 10%Except 20% on1xIG Setting)

3xI G

1

4xI G

2xI G

1xI G

2 3 4 5 6 7 8 910 100

GROUND CURRENT-AMPERES

TIM

E IN

SE

CO

ND

S10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 H

OU

R1

MIN

UTE

2 H

OU

RS

1600

0

GROUND CURRENT-IN MULTIPLES OF Ig = 160A

1600

960

800

640

480

320

160

1120

1280

1440

5xI G

I

500 ms

300 ms

150 ms

+

Figure 8. MDL, HMDL, CMDL, and CHMD Ground Fault Protection - Curve Number SC-6914-98, June 2007

Circuit Breaker Time/Current Curves (Ground Current)


Equipped With Type MES Digitrip RMS 310 Trip Unitsfor Ground Fault Protection

Catalog Types: MES3800LSG and MES3800LSIG Digitrip RMS 310 Trip Units for use with Circuit Breaker Types MDL, KMDL, CMDL, CHMDL .

Engaged

Remove

Cat.

In



Test

500

150300

4

21

3 5

Ig = 160A

5

7 3

2 8

4 6


I

Ground FaultPickup x Ig

TimeMIsec

300

100I

200

TimeMIsec

Fixed Short Delay Time

Adjustable Short Delay Time

Typical Trip Unit Nameplate

Typical Trip Unit Nameplate

Engaged

Remove

Cat.

In



Test

500

150300

4

21

3 5

Ig = 160A

5

7 3

2 8

4 6


I

Ground FaultPickup x Ig

TimeMIsec

Notes:

Curve accuracy applies from –20°C to +55°C ambient . For possible continuous ampere derating for ambient above 40°C, refer to Eaton .

Digitrip RMS 310 trip units are suitable for functional field testing with test kit Cat . No . STK2 . For field testing using primary injection methods, follow NEMA publication (AB4) .

Types MDL, HMDL, CMDL, and CHMDL Equipped with Type MES Digitrip RMS 310 Trip Units, Ground Fault Protection


Series CM-Frame



MaximumMinimum



5X 10X+20% 10%


100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

TIME

IN S

EC

ON

DS

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR

1 MIN

UTE

2 HO

UR

S

TIM

E IN

SE

CO

ND

S

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 H

OU

R1

MIN

UTE

2 H

OU

RS

100

8060 907050 1000

800

600

900

700

500

400

300

200

10,0

00

8000

6000

9000

7000

5000

4000

3000

2000

10,0

00

8000

6000

9000

7000

5000

4000

3000

2000

100080

0

600

900

700

500

400

300

200

1008060 907050

100,

000

80,0

00

60,0

00

90,0

00

70,0

00

50,0

00

40,0

00

30,0

00

20,0

00





10,000



C Push to Trip


10

7.5

10 5

7.5

10 5

Amps(In)

Cat.No.40oC

7.5

5

+

Circuit Breaker Time/Current Curves


Equipped With Type MT Thermal-Magnetic Trip Unit

Catalog Types: MDL, HMDL, MDLB, HMDLB Circuit Breakers, 2 and 3 Poles .

For application and coordination purposes only . Thermal calibration based on 40°C ambient, cold start . Connected with four (4) feet of rated wire (75°C) per terminal . Tested in open air with current in all poles . Instantaneous calibration based on single-pole tests .

Maximum Voltage: 600V, AC (50/60 Hz) 250V, DC

Notes:

For additional information on the trip unit, see IL 29C607 .

1 Single pole data at 25°C based on NEMA Procedures (AB 4) for verifying performance of molded case circuit breakers .

UL/CSA rms Sym. kA, 50/60 Hz kA, DC

MDL, MDLB 65 50 25 22HMDL, HMDLB 100 65 35 25

240V 480V 600V 250VBreaker Type

IEC 60947-2 rms Sym. kA, 50/60 Hz kA, DC

Icu Ics Icu Ics Icu IcsMDL, MDLB 65 65 50 50 20 10 20 10HMDL, HMDLB 100 100 70 50 25 13 20 10



Breaker Rating

RatedAmperes (In)

Instantaneous Trip Amperes(See Figure Below)

300 - 600 500 to 1000% of trip unit rating (DC values are approximately 40% higher)

Figure 9. MDL, HMDL, MDLB, and HMDLB, 300-600A - Curve Number SC-6911-98, June 2007

Types MDL, HMDL, MDLB, and HMDLB Equipped with Type MT Thermal-Magnetic Trip Unit, 300 to 600 Amperes

Interrupting Rating


Series CM-Frame

14


Series CM-Frame

EATON www.eaton.com

MaximumMinimum






Push to Trip


Amps(In)

Cat.No.

oC

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

TIME

IN S

EC

ON

DS

1,000

500

300

200

5,000

3,000

2,000

1 HO

UR

1 MIN

UTE

2 HO

UR

S

TIM

E IN

SE

CO

ND

S

10,000

100

50

30

20

10

5

3

2

1

.5

.3

.2

.1

.05

.03

.02

.01

.005

.003

.002

.001

1,000

500

300

200

5,000

3,000

2,000

1 H

OU

R1

MIN

UTE

2 H

OU

RS

100

8060 907050 1000

800

600

900

700

500

400

300

200

10,0

00

8000

6000

9000

7000

5000

4000

3000

2000

10,0

00

8000

6000

9000

7000

5000

4000

3000

2000

100080

0

600

900

700

500

400

300

200

1008060 907050

100,

000

80,0

00

60,0

00

90,0

00

70,0

00

50,0

00

40,0

00

30,0

00

20,0

00





10,000

8

6

4 8

6

4 8

6

4

4X

+

8X

10%20% +

Circuit Breaker Time/Current Curves


Equipped With Type MT Thermal-Magnetic Trip Unit

Catalog Types: MDL, HMDL, MDLB, HMDLB Circuit Breakers, 2 and 3 Poles .

For application and coordination purposes only . Thermal calibration based on 40°C ambient, cold start . Connected with four (4) feet of rated wire (75°C) per terminal . Tested in open air with current in all poles . Instantaneous calibration based on single-pole tests .

Maximum Voltage: 600V, AC (50/60 Hz) 250V, DC

Notes:

For additional information on the trip unit, see IL 29C607 .

1 Single pole data at 25°C based on NEMA Procedures (AB 4) for verifying performance of molded case circuit breakers .

UL/CSA rms Sym. kA, 50/60 Hz kA, DC

MDL, MDLB 65 50 25 22HMDL, HMDLB 100 65 35 25


IEC 60947-2 rms Sym. kA, 50/60 Hz kA, DC

Icu Ics Icu Ics Icu IcsMDL, MDLB 65 65 50 50 20 10 20 10HMDL, HMDLB 100 100 70 50 25 13 20 10



Breaker Rating

RatedAmperes (In)

Instantaneous Trip Amperes(See Figure Below)

700 - 800 400 to 800% of trip unit rating (DC values are approximately 40% higher)

Figure 10. MDL, HMDL, MDLB, and HMDLB, 700-800A - Curve Number SC-6912-98, June 2007

Types MDL, HMDL, MDLB, and HMDLB Equipped with Type MT Thermal-Magnetic Trip Unit, 700 and 800 Amperes

Interrupting Rating

Proof 5 — December 14, 2015 9:02 PM



Series CM-Frame

Eaton1000 Eaton BoulevardCleveland, OH 44122United StatesEaton .com

© 2014 EatonAll Rights ReservedPrinted in USAPublication No . TD012036EN / KDCApril 2014

Eaton is a registered trademark .

All other trademarks are property of their respective owners .

Series CM-Frame


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