section 5 rainbow catalog

WHERE TO USE

Use for heavy duty dc industrial applica-tions such as steel mills, cranes, materialhandling, rapid transit as well as general-duty machine tool, textile machinery andsimilar applications. Contactors have a steelbase insulated from the electrical circuits.They can be mounted on either metal orinsulating panels.

NEMA Size 1-5 are available in variousNO and NC pole combinations. Sizes 6-10available in NO pole only.

Advanced design arc chutes (non-asbes-tos) provide make or interrupt ratings of upto ten times the contactor ratings for 600-volt applications and four times the contac-tor ratings for 1000-volt applications. Thearc is completely extinguished within thearc chute structure.

Select-contactor ratings on the basis ofboth dc current-carrying capacity and blow-out ratings. The blowout rating establishesthe contactor current rating and interrupt-ing rating. Larger contactors are used be-cause the increased tip gap provides im-proved interruption on the lower currentapplication.

The function of the blowout coil is tomove the arc upward at the same time thecontacts are opening, thus forcing the arcaway from the tips and into the arc chute ata faster rate.

For no-load operation choose contactorsfrom Step 1 page 5-3. Earlier designs for thisapplication did not contain arc chute orblow-out coil. Contactors listed contain arcchute and blow-out coils and will operateunder these same conditions.

For motor and resistive loads choose con-tactors with the required dc current-carry-ing capacity as given in the application tableon page 5-6.For resistive and motor loads through1000-volt motor applications, specify unitswith maximum blowout ratings listed foreach size from Step 1 tables.For moderately inductive loads, such asmotor fields with discharge resistors, selectcontactors with blowout ratings two to threetimes rated full-load dc current. The dis-charge resistor can be permanently con-nected in parallel with the load or can beconnected across the load with a normallyclosed pole. A contactor with NO and NCpole can be used. The normally open polewill disconnect power. The discharge resis-tor should not exceed four times the loadresistance for 250 volts or two times the loadresistance for 600 volts.For motor and resistive loads, contactorswill interrupt ten times blowout rating at600 volts and four times blowout rating at1000 volts, maximum. See application table,page 5-6.For highly inductive loads, such as brakecoils without discharge resistors, use twopoles in series for opening both sides of theline. For highly inductive loads such asIC9528A106 brakes or equivalent magnets,choose contactors with blowout ratingsequal to load current.Normally closed pole applications. Forlisted NC devices, only 1.5 times make rat-ing can be obtained. For more severe orlarger make ratings of up to 10 times ratedcurrent, see IC2800Y105 and Y106, page5-10.

Order interlocks either factory-mounted orseparately supplied depending upon antici-pated use. If applications are known in ad-vance, factory-mounted interlocks can beordered. If flexibility in application is de-sired, order interlocks and mounting kitsseparately and mount as needed. Select volt-age range depending on application.

Mechanical interlocks—Mechanical inter-locks between two contactors allows onlyone contactor to close. See page 5-5.

Fig. 1. DS303 Size 3 with auxiliary interlock Fig. 2. DS303 Size 1 1NO/1NC poles Fig. 3. DS303 Size 6 with auxiliary interlock

Fig. 4. IC2800Y108 Size 9

Heavy-duty Contactors, DS3035-2

Data subject to change without notice

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HOW TO ORDER (Cont’d)

By catalog number—Order contactors bycomplete DS number, where given, includingform, coil number and interlock designa-tion (if required). Accessories for ac opera-tion (rectifiers, resistors, auxiliary contac-tors, etc.) will automatically be supplied asseparate items by selection of proper coilnumber. See examples following.

EXAMPLE: 600-volt open contactor, unitmounted, 25 amp, 1 NO pole, 25-amp blow-out (Step 1) 115-volt dc coil (Step 2), with 2NO interlocks for left-hand mounting (Step3).

DS303 A1A01EX A003 XF

Select Form — — InterlockStep 1 Step 3

Coil NumberStep 2

EXAMPLE: Same as first example except for115-volt ac operation and 2 NO interlocksfor right-hand mounting.DS303 A1A01EX A650 XG

Select Form — — InterlockStep 1 Step 3

Coil NumberStep 2

REFERENCES:

See page 5-4.HOW TO SELECT

Step 1—Select Form (See page 5-9 for coil and interlock suffix)

NEMASize

8 hrOpenRatingAmpDc†

Poles

Blowout CoilRating Amp,

DC‡

Maximum 600 volts 601-1000 volts(1250 Volts - refer to GE)

DS303Form

DS303FormNO

PoleNC

Pole

1 25

1 NO 10 A1A01DX. . . B1A01DX. . .1 NO 25 A1A01EX. . . B1A01EX. . .1 NC 10 A1B01XD. . . B1B01XD. . .1 NC 25 A1B01XE. . . B1B01XE. . .

1 NO 1NC 25 25 A1D01EE. . . B1D01EE. . .

2 50

1 NO 50 A2A01FX. . . B2A01FX. . .1 NC 50 A2B01XF. . . B2B01XF. . .2 NO 10 A2C01DX. . . B2C01DX2 NO 25 A2C01EX. . . B2C01EX. . .2 NO 50 A2C01FX. . . B2C01FX. . .

1 NO 1 NC 50 50 A2D01FF. . . B2D01FF. . .

3 100

1 NO 50 A3A01FX. . . B3A01FX. . .1 NO 100 A3A01GX. . . B3A01GX. . .1 NC 100 A3B01XG. . . B3B01XG. . .2 NO 100 A3C01GX. . . B3C01GX. . .

1 NO 1 NC 100 100 A3D01GG. . . B3D01GG. . .2 NO 2 NC 50 50 A3F01FF. . . B3F01FF. . .2 NO 2 NC 100 100 A3F01GG. . . B3F01GG. . .

4 1501 NO 150 A4A01HX. . . B4A01HX. . .1 NC 150 A4B01XH. . . B4B01XH. . .2 NO 150 A4C01HX. . . B4C01HX. . .

1 NO 1 NC 150 150 A4D01HH. . . B4D01HH. . .

5 3001 NO 300 A5A01JX. . . B5A01JX. . .1 NC 300 A5B01XJ. . . B5B01XJ2 NO 300 A5C01JX. . . B5C01JX. . .

1 NO 1 NC 300 300 A5D01JJ. . . B5D01JJ. . .

600 Volts—Front-connected 600 Volts—Back-connected

6 600 1 NO 600 A6A01KX. . . A6A02KX. . .

7 900 1 NO 900 A7A01LX. . . A7A02LX. . .

750 Volts—Front-connected 750 Volts—Back-connected

6 600 1 NO 600 F6A01KX. . . F6A02KX. . .

7 900 1 NO 900 F7A01LX. . . F7A02LX. . .

600 Volts—Front-connected Mounted 600 Volts—Back-connected MountedIC2800 Form IC2801 Form

8 1350* 1 NO 1500 Y107A. . . AX126G. . .**

9 2500 1 NO 2500 Y108A. . . AY142G. . .**

10 3250 1 NO 3250 Y130A. . . AY300G. . .

750 Volts—Front-connected Mounted 750 Volts—Back-connected MountedIC2800 Form IC2801 Form

8 1350* 1 NO 1500 Y107AA. . . (1000 Volts) AX1. . .**

9 2500 1 NO 2500 Y108S. . . (1000 Volts) AY1XX. . .**

10 3250 1 NO 3250 Y130. . . AY300G. . .

6000 1 NO 6000 AY3XX (1000 Volts) AY301G (1000 Volts)

* Non-NEMA rating 1500 amperes.† For purposes of contactor selection, 8-hr rating is synonymous with continuous rating.‡ The function of the blowout coil is to move the arc upward at the same time the contacts are opening, thus forcing the arc away from the tips and into the arc chute at a faster rate.** Back connected—Unmounted forms are IC28001178 and IC28001180.

DC Contactors and Relays 5-3

Heavy-duty Contactors


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Interlock contact arrangement—Inter-lock contacts can be changed by the pur-chaser from normally open to normallyclosed and vice versa, if necessary. To insureproper clearance on NO-NC forms, locate

NC contact furthest from plunger head.Time rating of normally closed contac-tors (IC2800 contactors)—coils of contac-tors with normally closed poles are for in-termittent duty only.The coils can be

energized 30 percent of the time but nomore than 10 minutes continuously or 20minutes continuously if only once out ofthree hours time. For continuous operationrefer to company.

HOW TO SELECT (Cont’d)

Step 2—Add Coil Number‡ (See Page 5-9 for other voltages)

NEMASize Poles

Dc Operation** Ac Operation§ AC Operationf

115/120Volts

230/250Volts

500Volts

550Volts

38Volts

62/68Volts

80Volts

100Volts

115Volts

230Volts

460Volts

575Volts

115Volts

230Volts

460Volts

575Volts

1-7 DS303 Forms A003 A002 A004 A005 A013l A016 A019 A021 A650 A651 A652 A653 A680 A681 A682 —

8ListedForms 102 103 107¶ 106� N/A N/A N/A N/A 650 651 652 653 — — — —

9-10ListedForms 101 102 130 104 N/A N/A N/A N/A 650 651 652 653 — — — —

N/A 5 Not Available‡ Coil terminals on right. Left-side mounting available on request.§ Includes rectifier and resistor, see page 5-7.** For other DC coil voltage, see page 5-9

f Includes rectifier only. Resistor not used.¶ For 500, 550 volts.� For 600 volts only.l 38 volt form with 50% pickup voltage is A713

Step 3—Add Interlock Designation Drive Systems-S(A60000)

NEMASize

Interlock ArrangementApplication Notes

0-48 V Dc1 49-600 V Dc0-600 V Ac

Left-hand Side Right-hand Side Designation l Designation l

1-56-7Q

1 NO, 1 NC . . .Left-hand mounting

preferredwith coil terminals

on right

DH-Special XH2 NO . . . DF-Special XF2 NC . . . DK-Special XK. . . 1 NO, 1 NC DJ-Special XJ-Special. . . 2 NO DG-Special XG-Special. . . 2 NC DL-Special XL-Special

2f, 3C4-7

2 NO 2 NO

Coil Terminalson right

DM-Special XM-Special2 NC 2 NC DS-Special XS-Special

1 NO, 1 NC 2 NC DR-Special XR-Special2 NO 1 NO, 1 NC DN-Special XN2 NO 2 NC DP-Special XP

1 NO,1 NC 1 NO, 1 NC . . . XT

8-10

2 NO, 2 NC . . . 2 NC contacts inseries required to

insert seriesresistor

. . . W4 NO, 4 NC . . . . . . S

. . . 2 NO, 2 NC . . . BW

. . . 4 NO, 4 NC . . . BS

f 2 NO pole Size 2 only.C 1 NO 2 NO pole Size 3. (Can accept only 1 interlock for 0-48v Dc)l Interlock less cover. .00 Two contacts equal one interlock. Order by description.1 48-volt interlocks have special tips for making circuits at minimums of 500 millivolts and 0.018 amperes.

REFERENCES RENEWAL PARTS

Instruction Book DS303 A1, B1 .................................................GEF-4647 IC2800 Y107 ...................................................GEF-4606DS303 .......................................................GEK-83756 A2,B2...........................................................4648 Y108............................................................4607IC2800 Y107, Y108......................................GEH-751 A3,B3...........................................................4649 1178............................................................4324

Y130, A4,B4...........................................................4650 1180............................................................43431178, 1180, 1181 A5,B5...........................................................4651 Y106 ..................................................GEF-4126Y106 ..............................................GEH-3057 A6 ................................................................6050

A7 ................................................................6051

Dc Contactors and Relays5-4



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Step 4—Specify Interference Interlocks (when necessary to interference-interlock two adjacent contactors)NEMASize Poles Interference

InterlockContactor Spacing (in.)

Center Line to Center Line

2 2 NO 6923809G12 6 5⁄8

31 NO, 1 NC, 1 NO-1 NC 6923809G14 4 1⁄2

2 NO 6923809G12 6 5⁄8

41 NO, 1 NC, 1 NO-1 NC 6923809G8 5 1⁄2

2 NO 6923809G12 6 5⁄8

51 NO, 1 NC, 1 NO-1 NC 6923809G8 5 1⁄2

2 NO 6923809G12 6 5⁄8

6 or 7 1 NO 4969078G2-obsolete 6 1⁄2

8 or 9 1 NO . . . Refer to Company

NOTE: Mechanical interlocks are used as a supplement to electrical interlocks when required for additional protection. When mechanical interlocks are used, the electrical interlocks mustbe mounted on the outside of each contactor.Contactor spacing is horizontal distance between center lines of contactors. For additional combinations refer to Company.*When used with contactors containing base mounted suppressors, refer to factory.

HOW TO SELECT INTERLOCKS FOR STOCKING OR FIELD MODIFICATION (A 1 B)

Step A—Select Interlock Contact Blocks

CircuitArrangement

48 V and Below Dc 49-600 V Dc, 0-600 V AcContact Block Contact Block

2 NO IC2956A205A IC2956A200A2 NC IC2956A205B IC2956A200B

1 NO, 1 NC IC2956A205C IC2956A200C

Step B—Select Mounting Kit (One required per contact block)Contactor Left-hand Mounting—Coil terminals on right (Preferred location) Right-hand Mounting—Coil terminals on left

NEMA Size Main Poles Mounting Kit* Mounting Kit*

1 All IC2956A202J IC2956A202K

21 NO

IC2956A202J IC2956A202K1 NC1 NO, 1 NC

2, 3 2 NO IC2956A202G IC2956A202H

31 NO

IC2956A202C IC2956A202D1 NC1 NO, 1 NC

4, 51 NO1 NC

1 NO, 1 NCIC2956A202E IC2956A202F

4, 5 2 NO IC2956A202G IC2956A202H

6, 7 1 NO IC2956A203L IC2956A203L

*For interlock blocks on both sides, refer to company.

Contactors and Relays 5-5



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CONTACTOR RATINGS (NORMALLY OPEN POLES ONLY)

NEMASize

Carry (open ratings in Amperes)600 or 1000 Volts Dc

Make Amperesof

600 or 1000 Volts Dc‡

Interrupt AmperesDc Motor Circuit

8-hr† 60-min 30-min 10-min NEMA Maximum 600 Volts 1000 Volts

1 25 30 38 50 100 250 250 100

2 50 67 75 100 200 500 500 200

3 100 133 150 180 400 1000 1000 400

4 150 200 225 300 600 1500 1500 600

5 300 400 450 600 1200 3000 3000 1200

6 600 800 900 1200 2400 6000 6000 . . .

7 900 1200 1350 1800 3600 9000 9000 . . .

8 1350* 2000 2250 3000 5400 9000 Four times . . .

9 2500 3350 3750 5000 10000 15000 blowout . . .

10 3250 . . . . . . . . . NA 15000 rating . . .

* Non-NEMA rating 1500 amperes.† For purposes of contactor selection, 8-hr rating is synonymous with continuous rating.‡ NEMA standard is 4 times 8-hr rating at 600-volts maximum.Interlock ratings—Same as for relays, page 5-20.

APPLICATION (MOTOR AND RESISTIVE LOADS)§

NEMASize

Motor HorsepowerResistive Heating Loads

kWReduced-voltage Starting Line Contactor Crane Duty: 30 Min, 60 MinMill Duty: 60 Min

115/120 V 230/240/250 V 500/550 V 230/240/250 V 115/120 V 230 V

1 3 5 5 7.5 2.5 5.0

2 5 10 20 15 5.2 10.4

3 10 25 50 35 10.4 20.8

4 20 40 75 55 15.5 31.0

5 40 75 150 110 31.0 62.0

6 75 150 300 225 62.0 124.0

7 110 225 450 330 . . . . . .

8 175 350 700 500 . . . . . .

9 300 600 1200 1000 . . . . . .

§ For guidance only. Motor full-load amperes must not exceed contactor rating.Horsepower ratings—Select contactors on the basis of highest horsepower of which a motor is rated (or operated if operated at a service-factor rating).Intermediate accelerating contactors—Select units such that the 8-hour rating will not be less than 0.25 times the accelerating peak.

CONTROL POWER REQUIREMENTS

NEMASize Poles

Numberof

Contactors

Current Requirements-Amperes Burden-Volt Amperes§Volts Dc Volts Ac

115/120 230/240/250 500 550 115 230 460

1 & 21 NO 1 0.133 0.076 0.069 0.071 20.0 18.5 26.01 NC 1 0.133 0.076 0.069 0.071 20.0 18.5 26.0

1 NO-1 NC 1 0.133 0.076 0.069 0.071 20.0 18.5 26.0

2 2 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0

3

1 NO 1 0.135 0.083 0.038 0.028 33.0 34.5 38.81 NC 1 0.135 0.083 0.038 0.028 33.0 34.5 38.8

1 NO-1 NC 1 0.135 0.083 0.038 0.028 33.0 34.5 38.82 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0

4 & 5

1 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.01 NC 1 0.320 0.173 0.087 0.069 58.0 60.0 63.02 NO 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0

1 NO-1 NC 1 0.320 0.173 0.087 0.069 58.0 60.0 63.0

6 & 7 1 NO 1 48 watts

8 & 9 1 NO 1 500 watts pickup, 180 watts holding

§ Volt-ampere burden includes power requirements of rectifier, series resistor.

Contactors and Relays5-6



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ACCESSORIES (Supplied for separate mounting. See below for dimensions)

NEMA Sizes 1-5 (DS303 only. Included in contactor price)NEMASize Poles Volts Series Resistor,

Cat. No. 68A7004- Rectifier

1 & 21 NO1 NC

1 NO, 1 NC

500 dc A50E4000DA-TH . . .550 dc A50E5000DA-TH . . .115 ac, 25, 50, 60 Hertz-“A650” A50E200DA-TH IC3500A403C2230 ac, 25, 50, 60 Hertz-“A651” A50E500DA-TH IC3500A403C6460 ac, 25, 50, 60 Hertz-“A652” A50E4000DA-TH IC3500A403C5575 ac, 25, 50, 60 Hertz-“A653” A50E6500DA-TH IC3500A403C8

2 & 3 2 NO115 ac, 25, 50, 60 Hertz-“A650” A50E25DA-TH IC3500A403C2230 ac, 25, 50, 60 Hertz-“A651” A50E150DA-TH IC3500A403C6460 ac, 25, 50, 60 Hertz-“A652” A50E750DA-TH IC3500A403C5575 ac, 25, 50, 60 Hertz-“A653” A50E750DA-TH IC3500A403C8

31 NO1 NC

1 NO, 1 NC

115 ac, 25, 50, 60 Hertz-“A650” A50E150DA-TH IC3500A403C2230 ac, 25, 50, 60 Hertz-“A651” A50E500DA-TH IC3500A403C6460 ac, 25, 50, 60 Hertz-“A652” A50E2000DA-TH IC3500A403C5575 ac, 25, 50, 60 Hertz-“A653” . . . IC3500A403C8

4 & 5

1 NO1 NC

1 NO, 1 NC2 NO

115 ac, 25, 50, 60 Hertz-“A650” A50E25DA-TH IC3500A403C2230 ac, 25, 50, 60 Hertz-“A651” A50E150DA-TH IC3500A403C6460 ac, 25, 50, 60 Hertz-“A652” A50E750DA-TH IC3500A403C5575 ac, 25, 50, 60 Hertz-“A653” A50E750DA-TH IC3500A403C8

NEMA Sizes 6-9 (Included in contactor price)

ContactorSize Volts

Rectifier‡ Series Resistor Holding Resistor Aux. ContactorlCat. No. Qty Cat. No. Qty Cat. No. 68A7004 Qty CR2810 Qty

Ac Operation—60 Hertz

6 & 7115 IC3500A403C2 1 . . . . . . . . . . . . A14AC2 1230 IC3500A403C6 1 IC9033E2S8¶ 1 . . . . . . A14AC3 1460 IC3500A403C5 1 IC9033A2Y5§ 1 . . . . . . A14AC4 1

8115 IC3500A403C2 1 . . . . . . A100G125EA-TH 1 A14AC2 1230* IC3500A403C6 1 . . . . . . A100G500EA-TH 1 A14AC3 1460* IC3500A403C5 1 68A7004-A100G100EA-TH 1 A100G1500EA-TH 1 A14AC4 1

9

115 IC3500A403C2 1 . . . . . . A100G10EA-TH 1†A14C2 1

A100G25EA-TH 1†

230* IC3500A403C6 1 . . . . . . A100G75EA-TH 2†A14C3 1

A100G10EA-TH 1†

460* IC3500A403C5 1 . . . . . . A100G250EA-TH 2†A14C4 1

A100E150EA-TH 1†Dc Operation

8* 115/120 . . . . . . . . . . . . A100G100EA-TH 1 . . . . . .

8* 230/250 . . . . . . . . . . . . A100G500EA-TH 1 . . . . . .

8* 500/550 . . . . . . . . . . . . A100G1500EA-TH 1 . . . . . .

9* 115/120 . . . . . . . . . . . . A100G25EA-TH 2 . . . . . .

9* 230/250 . . . . . . . . . . . . A100G100EA-TH 2 . . . . . .

9* 500 . . . . . . . . . . . . A100G350EA-TH 2 . . . . . .

9* 550 . . . . . . . . . . . . A100G500EA-TH 2 . . . . . .

* Two normally closed interlock circuits needed on Size 8and 9 contactors to insert holding resistor in coil circuit.

¶ Set slider at 250 ohms.§ Tap at 750 ohms.† Resistors connected in series.

‡ Rectifiers have built-in transient protection.l Auxiliary contactor used to open both sides of rectifier.

ACCESSORY DIMENSIONS (In inches)

ResistorForm

StudLength

StudDia B

DepthFront

of Base

ResistorDia A

IC9033A2, E2 9 3⁄8 5⁄16 8 5⁄8 2 1⁄16

68A7004A50EB50E 7 3⁄4 1⁄4 6 3⁄4 1 1⁄8

68A7004A100GB100G 8 3⁄4 1⁄4 9 3⁄4 1 1⁄8

Fig. 4A. Mounting

requirements for

resistor

Fig. 4B. Rectifiers IC3500A403C

Fig. 4C. CR2810A14AC Auxil-

iary Contactor

Contactors and Relays 5-7

Dc Contactors-General Information


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MOUNTING DIMENSIONS

WIRING SYMBOLS (FRONT VIEW) TYPICAL DIAGRAM

Fig. 5.

*Interlocks shown are left-hand

mounted. Coil terminals on right.

Fig. 6. Fig. 7.

NEMA Size1-5 6-7 8-9

Insulated surface 0.5’’ 1.8’’ 4.0’’Non-insulated surface 1.0’’ 3.0’’ 8.0’’

* Insulation 1/8-inch electrical-class polyester insulation or

equivalent.

ARC CLEARANCES

Minimum arc clearances in front and above contactorarc chutes when used on 1000-volt maximum motorcircuits)

NEMASize

IC303A orIC303B Form

FigureNo.

Dimensions in Inches WeightApprox.

Lbs.A B C D E F G H J DepthMounting Base

Thickness Hole diameter

1—1A01DX, EX 5 3 1⁄4 2 1⁄4 5 3⁄8 1 5⁄8 1⁄4 2 11⁄32 3 1⁄2 11⁄16 — 6 1⁄2 1⁄16 13⁄64 4—1B01XD, XE 6 3 1⁄4 2 1⁄4 8 5⁄8 1⁄4 1⁄4 2 11⁄32 6 1⁄2 — — 6 1⁄2 3⁄32 13⁄64 4—1D01EE 6 3 1⁄4 2 1⁄4 9 3⁄4 1 5⁄8 1⁄4 2 11⁄32 6 1⁄2 — — 6 1⁄2 3⁄32 13⁄64 6

2

—2A01EX, FX 5 3 1⁄4 2 1⁄4 5 3⁄8 1 5⁄8 1⁄4 2 11⁄32 3 1⁄2 11⁄16 — 6 1⁄2 1⁄16 13⁄64 4—2B01XF 6 3 1⁄4 2 1⁄4 8 5⁄8 1⁄4 1⁄4 2 11⁄32 6 1⁄2 — — 6 1⁄2 3⁄32 13⁄64 4—2C01DX, EX, FX 6 4 3⁄4 4 1⁄2 7 3⁄4 2 3⁄8 1⁄4 4 4 5⁄8 1 1⁄16 1 7⁄8 9 5⁄8 1⁄8 5⁄16 8—2D01FF 6 3 1⁄4 2 3⁄4 9 3⁄4 1 5⁄8 1⁄4 2 11⁄32 6 1⁄2 — — 6 1⁄2 3⁄32 13⁄64 6

3

—3A01FX, GX 5 3 3⁄4 2 5⁄8 6 1⁄2 1 5⁄8 1⁄4 1 1⁄2 4 1⁄2 1⁄4 — 8 1⁄8 13⁄64 6—3B01XG 6 3 3⁄4 2 5⁄8 10 1⁄2 11⁄32 1⁄4 1 1⁄2 8 17⁄32 — — 8 1⁄8 13⁄64 6—3C01GX 5 4 3⁄4 4 1⁄2 7 3⁄4 2 3⁄8 1⁄4 4 4 5⁄8 1 1⁄16 1 7⁄8 9 5⁄8 1⁄8 5⁄16 15—3D01GG 6 3 3⁄4 2 5⁄8 11 25⁄32 1 5⁄8 1⁄4 1 1⁄2 8 17⁄32 — — 8 1⁄8 13⁄64 12—3F01FF, GG 6 — 6 1⁄8 12 13⁄16 9 5⁄8 1⁄8 24

4

—4A01HX 5 4 3⁄4 4 1⁄2 8 3⁄4 3 1⁄16 1⁄4 4 5 5⁄16 1 1⁄16 1 7⁄8 10 7⁄8 1⁄8 5⁄16 16—4B01XH 6 4 3⁄4 4 1⁄2 13 1⁄2 1 11⁄16 1⁄4 4 8 9⁄16 — — 10 7⁄8 1⁄8 5⁄16 16—4C01HX 7 — 5 5⁄8 9 1⁄4 1 3⁄4 2 13⁄16 1 7⁄8 6 23⁄32 15⁄16 — 10 7⁄8 1⁄8 5⁄16 21—4D01HH 6 4 3⁄4 4 1⁄2 15 3⁄4 3 1⁄4 1⁄4 4 9 1⁄4 — — 10 7⁄8 1⁄8 5⁄16 20

5

—5A01JX 5 4 3⁄4 4 1⁄2 8 3⁄4 3 1⁄16 1⁄4 4 5 5⁄16 1 1⁄16 1 7⁄8 10 7⁄8 1⁄8 5⁄16 16—5B01XJ 6 4 3⁄4 4 1⁄2 13 1⁄2 1 11⁄16 1⁄4 4 8 9⁄16 — — 10 7⁄8 1⁄8 5⁄16 16—5C01JX 7 — 5 5⁄8 9 1⁄4 1 3⁄4 2 13⁄16 1 7⁄8 6 23⁄32 15⁄16 — 10 7⁄8 1⁄8 5⁄16 21—5D01JJ 6 4 3⁄4 4 1⁄2 15 3⁄4 3 1⁄4 1⁄4 4 9 1⁄4 — — 10 7⁄8 1⁄8 5⁄16 20

6 —6A01KX 7 — 5 3⁄8 16 1⁄2 11⁄16 4 15 — — 12 3⁄16 1 5⁄16 7⁄16 37

7 —7A01LX 7 — 5 3⁄8 16 1⁄2 11⁄16 4 15 — — 12 3⁄16 1 5⁄16 7⁄16 37




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IC2801—DIMENSIONS

All forms—refer to CompanyFig. 8. Unit-mounted

IC2800Form A B Depth Weight

Y107 5 1⁄2 4 3⁄8 11 13⁄32 150Y108 7 5 5⁄8 12 31⁄32 170Y130 7 5 5⁄8 12 31⁄32 180

Fig. 9. Back-connected

The 1178, 1180

and 1181

contactors are

shipped

unassembled.

IC2800Form Depth Weight

1178 9 11⁄32 1301180 10 29⁄32 1501181 10 29⁄32 160

Cross Reference Data IC2800 To DS303 Contactors†

COIL DATA*DS303 IC2800

CoilVolts

AllForms

160716081609

1612–141620–23

1625

161716181619

1170Y100

1172Y101

1174Y102

1176Y103

EA600EA900

230/250 A002 2 2 2 2 2 2 2 2115/120 A003 3 3 3 3 3 3 3 3475/500 A004 37 4 4 5 5 5 5 5

550 A005 38 5 5 6 6 7 6 6600 A006 19 5 5 6 6 20 6 66 A007 17 54 26 20

12 A008 12 18 18 16 16 21 3818/20 A009 30 6 30 23 16 40

24 A010 18 13 15 9 19 11 11 4128 A011 26 20 25 27 18 4232 A012 10 10 9 12 12 12 9 738 A013 32 20 35 15

48/50 A014 14 9 6 8 9 14 16 1055/60 A015 44 5662/68 A016 9 14 16 4 4 6 4 11

74 A017 3578 A018 15 11 7 8 4 7 1280 A019 7 690 A020 13 7 22 14 37100 A021 31 23 22 9 27 13135 A022 25 29150 A023 8 11 10 15 17165 A024 30

180/190 A025 43 21 11 8200 A026 12275 A027 20 28 21 55 27 19 17300 A028 50 12 13 10 24 10 4350 A029 40380 A030 8440 A031 39 26 17 18 23 19

AUXILIARY INTERLOCKS*

LEFT HAND MOUNTING (Preferred)

Contacts

DS303 IC2800

AllForms

All1600’s

Y100to

Y104

1170to

1177

EA600EA900

1NO/1NC XH H B B B2NO XF B or F C C C2NC XK D or K D D D

* For other coil # or interlock forms, refer to company.† See GEP-345D, page 5-3.

RIGHT HAND MOUNTING

Contacts

DS303 IC2800

AllForms

All1600’s

Y100to

Y104

1170to

1177

EA600EA900

1NO/1NC XJ J E E E2NO XG C or J F F F2NC XL E or L G G G

Dc Contactors and Relays 5-9

MOUNTING DIMENSIONS Size 8, 9, and 10


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WHERE TO USE

Use for general dc industrial control suchas machine-tool control, textile-machinerycontrol and similar applications. Contactorshave a steel base insulated from the electri-cal circuits. They can be mounted on eithermetal or insulating panels.

The 25 and 50 amp NO contactors aboveare to be used where exact replacement ofthe obsolete line of contactors is required.The contactor uses a non-asbestos arc chuteand will provide make/interrupt ratings of 4times the 8-hour rating of the NO pole. Noother pole configurations are available. SeeDS303, page 5-2.

WHERE TO USE

Use for crane, metal-rolling mill and allother heavy industry dc control. Contactorsare available mounted or unmounted in ei-ther front- or back-connected forms. Useunit-mounted, front-connected form formounting on metal or insulating panels.Use unmounted back-connected form forassembly directly on your own insulatingpanel.

Select sizes according to motor horse-power and time rating. Use forms with blow-out rating for dc power interruption.

Time rating of normally closed contac-tors—Coils of contactors with normallyclosed poles are for intermittent duty only.The coils can be energized 30 percent of thetime but not more than 10 minutes contin-uously or 20 minutes continuously if onlyonce out of three hours time. For continu-ous operation refer to company.

HOW TO ORDER

Order by complete IC number includingform letter, coil number, and interlock des-ignation or by description if new applica-tion.

Fig. 10. IC28001607 Fig. 11. IC2800Y105

REPLACEMENT GENERAL DUTY AND MILL DUTY CONTACTORSIC2800Form*

Available Coil #Suffix**

AvailableInterlock Suffix**

1607CD2, 3, 52, 55

F, G, HCE F, G, HCF F, G, H

1617CF OBS-Use DS303 B thru HCE OBS-Use DS303 B thru HCC OBS-Use DS303 B thru HCB OBS-Use DS303 B thru H

Y105A, AE 26, 30, 33 B thru GY106A, AC 2 thru 38 B thru G1173N† 2 thru 40 B thru G1175R† 2 thru 38 B thru G

**Refer to company for other suffixes.†Back connected.

MOUNTING DIMENSIONS

(FRONT VIEW)

Fig. 12.

IC2800 FormApproxWt in

Lb

Fig.No.

Dimensions in Inches

A B C D E F G H DepthMounting Foot

Thickness HoleDiam

1607CD, CE, CF 2 1⁄2 12 3 5⁄32 2 1⁄4 5 5⁄16 1 9⁄16 13⁄32 1 3 1⁄2 0 4 1⁄8 1⁄16 1⁄41617CB, CC, CE, CF 3 1⁄2 12 3 21⁄32 2 5⁄8 6 5⁄16 1 7⁄16 5⁄16 1 1⁄2 4 1⁄2 1⁄4 5 5⁄8 3⁄32 1⁄4Y105 23 13 6 3⁄8 16 1⁄2 5 12 11⁄16 3⁄4 7 11⁄16 1 9⁄16 7⁄16

Y106 48 13 8 3⁄8 20 7 16 11⁄16 1 10 13⁄16 1 9⁄16 5⁄81173N 15 12 5 1⁄4 4 1⁄4 12 3⁄4 6 3⁄4 overall depth 10 3⁄41175R 30 12 5 5⁄8 5 3⁄8 17 5⁄8 8 3⁄8 13 5⁄8

Fig. 13.


Replacement General Duty and Mill Duty Contactors


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WHERE TO USE

For use in 1000-volt dc circuits such as arefound in oil well drilling, material handling,crane control, uninterruptible power sup-plies, and transportation equipment. Thesecontactors are used in equipments where itis desired to reduce current ratings by goingto higher voltages. These contactors are spe-cially designed for applications with lowmake and interrupting requirements, with-out jogging.

Select contactors ratings on basis of dccurrent carrying capacities and interlock re-quirements.

Overcurrent power circuit. A special form(C300C) is available with an overcurrentpower circuit to prevent the contactor fromopening under a heavy overload current inexcess of the designed interruption rating.

Manual Latch. The C300E form utilizes amanual operator to close and latch thepower contacts if control power is not avail-able to operate the coil. This will eliminatethe need for the addition of a knife switchwhere applicable codes or standards requiremanual operation in the event of loss ofcontrol power or coil failure.

Fig. 14. IC2800C300A Fig. 15. IC2800C300E with manual latch mechanism

Step 1-Select Form

8-hr OpenRating (Amp)‡ Poles

Interlocks49-600 Volts

Dc†

IC2800Form

1250 1NO 1NO, 1NC C300A*E

1250 1NO 2NO, 2NC C300A*J

1250 1NO 2NO, 2NC C300C*J

1250 1NO 2NO, 2NC C300E*J

‡ For purposes of contactor selection, 8-hr rating issynonymous with continuous rating.References:Instruction Book...........................................GEH4468Renewal Parts .................................................GEF4605

* Insert coil number37 volts dc—12174 volts dc—122

108 volts dc—123125 volts dc—124250 volts dc—125

† Designation:2-circuit form is front accessible4-circuit form is side accessibleOther contact arrangements available on

request.

NOTES: Max make current—5000 amps; Max break current—2000 amps at 500 volts;Max interrupting capacity—1000 kW.

OUTLINE DRAWING

Fig. 16. IC2800C300

Special-purpose Contactors 5-11

IC2800C300


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WHERE TO USE

Normally OpenIC2800B310 contactors are used where

time-delay opening of power circuits such asdc motor loads and resistor loads are re-quired. They are normally open, single-polecontactors constructed with copper-jack-eted coils which provide time delay on drop-out. The contactors are front-connectedand can be mounted on either insulating ornoninsulating panels.

Normally ClosedUsed to short-out resistance steps in start-

ing dc motors. Contactors are normallyclosed, without blowouts, and are not de-signed to interrupt power.

Pick-up is instantaneous. Time-delaydropout results from use of a copper-jack-eted coil and adjustment of this time delay isobtained by using a non-magnetic armatureshim. Time delay of IC2800A501 contactorscan be adjusted over a narrow range by thearmature spring. Time delay of IC2800Y109contactor can be adjusted over a wide rangeby a sliding shim.

Mount contactors on either metal or in-sulating panels. Make connections from thefront.Enclosed rating—0.9 times the 8-hour,open-ampere rating of the contactor.

Fig. 17. IC2800B310Fig. 18. IC2800A501

HOW TO SELECT—NORMALLY OPEN

Step 1—Select Form8-hr Open

Rating (Amp)600 V Max*

PolesBlowoutRating(Amp)

IC2800Form

50 1 NO

2 B310N-Obsolete5 B310L

10 B310K25 B310J50 B310H

*For purposes of contactor selection, 8-hr rating is synonymous with continuous rating.

Step 2—Add Time-delay and Voltage Designation(Select time delay so that the desired delay falls in the middle of the time-delay range, as nearly as

possible)Time Delay in Seconds Designation

WithoutInterlock

WithTwo-circuitInterlocks

Dc Operation

115/120 V 230/240/250 V 500 V 550/600 V

0.4—0.6 0.3—0.45 X203 X202 X204 X2050.5—0.8 0.4—0.6 R203 R202 R204 R205

0.75—1.25 0.6—0.9 B203 B202 B204 B2051.0—1.4 0.75—1.1 F203 F202 F204 F2051.3—1.6 1.0—1.2 E203 E202 E204 E205

Step 3—Add Interlock DesignationNumber

Interlock Circuits Designation

None . . .2 NO D

1 NO, 1 NC C2 NC B

HOW TO SELECT—NORMALLY CLOSED

Step 1—Select Form8-hr Open

Rating (Amp)†

PolesTimeDelay

(Seconds)Volts Interlock

Arrangement

Intermittent CoilIC2800Form

Continuous CoilIC2800Form

100 1 NC See Step 2

2 NO A501A*23D A501A*53D115/120 1 NO, 1 NC A501A*23C A501A*53C

2 NC A501A*23B A501A*53B

2 NO A501A*24D A501A*54D230/240/250 1 NO, 1 NC A501A*24C A501A*54C

2 NC A501A*24B A501A*54B

2 NO A501A*27D A501A*57D500 1 NO, 1 NC A501A*27C A501A*57C

2 NC A501A*27B A501A*57B

2 NO A501A*28D A501A*58D

550 1 NO, 1 NC A501A*28C A501A*58C2 NC A501A*28B A501A*58B

150 1 NC Adjustable0.75–3.0

115/120 2 NO Y109B2ACCESSORIES

See page 5-13.

TIME-DELAY DESIGNATION*

See Step 2 and 3 on page 5-13.

† For purposes of contactor selection, 8-hr ratingis synonymous with continuous rating.

1 NO, 1 NC Y109A2230/240/250 2 NO Y109B3

1 NO, 1 NC Y109A3500 or 550 2 NO Y109B4

1 NO, 1 NC Y109A4

300 1 NC See Step 3

115/120 2 NO Y110*41 NO, 1 NC Y110*4

230/240/250 2 NO Y110*21 NO, NC Y110*2

500 or 550 2 NO Y110*131 NO, 1 NC Y110*13

Special Purpose Contactors5-12

IC2800B310, A501, Y109, Y110


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HOW TO ORDER

Order by complete IC number includingform, time delay designation and coil num-ber, and interlock designation.Example: To order a 50-amp, 600-volt dc con-tactor with 115-volt dc control, two NO inter-locks, a blowout rating of 10 amp and a timedelay of 0.5 seconds, specify contactorIC2800B310KR203D.

IC2800 B310K R203 D

Select Form — InterlockStep 1 Step 3

Time-delayandCoil NumberStep 2

Example: To order 100-amp, 550-volt dc con-trol continuously rated, two NC interlocks andtime delay of 1.0 seconds, specify contactor asfollows:

IC2800A501A F 58 B

— Interlock letter

— Coil number in-cluding holding resistor

— Time-delay letter———— Basic contactor form

Example: To order a 300-amp, 230-volt dccontactor, two NO interlocks, a time delay of 1.2seconds, specify contactor IC2800 Y110G4

IC2800 Y110 G 4

VoltageSelect Form Step 1Step 1

Time-delayand InterlockStep 2

References:

Instruction Book

IC2800B310 ..................................................GEH 3098IC2800A501 ..................................................GEH 3087IC2800Y109, Y110.........................................GEH 3088

Renewal Parts

IC2800 B310 ..................................................GEF 4179A501 ..................................................GEF 4130Y109,110............................................GEF 4603

Step 2—Insert Time-delay Designation—A501 onlyTiming Range in Seconds

DesignationIntermittent CoilOperation

Continuous Coil Operation(Requires holding resistor)

0.34—0.59 0.17—0.295 Y-Obsolete0.48—0.88 0.24—0.44 X-Obsolete0.63—1.30 0.32—0.65 R1.05—2.14 0.53—1.07 B1.86—3.24 0.93—1.62 F2.60—4.80 1.30—2.40 C-Obsolete5.80—7.60 2.90—3.80 E-Obsolete6.50—8.50 3.25—4.25 D-Obsolete

Insert Time-delay Designation—Y110 onlyTiming Range in Seconds

DesignationIntermittent CoilOperation Interlock

0.7—0.9 1 NO, 1 NC C-Obsolete0.8—1.0 1 NO, 1 NC D0.8—1.0 2 NO E-Obsolete1.2—3.0 1 NO, 1 NC F1.2—3.0 2 NO G-Obsolete

Interlock contacts—Interlock contacts can be changed by the Purchaser from normallyopen to normally closed, and vice versa.Interlock contact ratings—Refer to page 5-20.

Fig. 19. IC2800B310

IC2800Form

Dimensions in InchesA B C D E F Depth

Y109 8 1⁄2 4 5⁄8 3 1⁄2 1⁄2 6 1 6 1⁄8Y110 10 1⁄2 6 1⁄8 4 3⁄4 3⁄4 7 1⁄4 1 1⁄4 7 1⁄8

Fig. 20. IC2800A501 Fig. 21. IC2800Y109 and Y110

ACCESSORIES—Supplied for Separate mounting. See page 5-7 for

dimensions.

Holding Resistor (A501A Continuous duty)

Volts Resistor Cat. No.68A7004

115/120 A50E250DA-TH230/240/250 A50E1000DA-TH500 A50E4000DA-TH550 A50E5000DA-TH

Continuous duty—For continuous duty of IC2800A501A, one NC interlock must be used to place holding resistor in circuitafter pickup.

MOUNTING DIMENSIONS MOUNTING DIMENSIONS

Special Purpose Contactors 5-13

IC2800A501, Y109, Y110


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DESCRIPTION

The synchronous-motor field contactor isavailable in ratings, from 100 to 265 amps.The field contactor has two normally openpoles for applying and removing field exci-tation and one normally closed pole for in-serting resistance in the field for discharge.

These extremely fast-acting contactors aredesigned specifically for synchronous-motorapplications. The normally open and closedpoles have the correct amount of overlap toassure against the build-up of high inducedvoltages in the motor field when excitationis removed.

The field contactors are of the heavy-duty,clapper-type design for industrial use. Thecontactors have proved in the field that theygive long life under all conditions of oper-ation and service. The correct amount ofwipe keeps the contact tips clean which pro-vides positive electrical contact when thepoles are closed. Blowout coils are con-nected to each pole to quickly extinguishthe arc within the arc chute. Arc chutes arenon-asbestos and can easily be removed toinspect contact tips.

HOW TO ORDERB107, B207

1. Specify form according to control volt-age, frequency and interlocks.

2. Add coil number. For other voltages, re-fer to company.

REFERENCES:

PublicationsField contactor panels100-amp Field Contactor

Instructions ............................GEH-3063265-amp Field Contactor

Instructions ............................GEH-3090Renewal Parts Bulletin

IC2812B107.............................GEF-4156IC2812B207.............................GEF-4339

Outline DrawingsIC2812B107 Field Contactor ....117A7961IC2812B207 Field Contactor ....151A5871

Step 1—Select FormDc Power

Coil Voltage ElectricalInterlocks

IC2812Form8-hr Open

Rating†MaxVolts

100 250 Ac 3 NO and 3 NC B107DADc* 3 NO and 3 NC B107DB. . .

265 600AcorDc*

None* B207AC. . .1 NO and 1 NC B207AC. . .A2 NO and 2 NC B207AC. . .B3 NO and 3 NC B207AC. . .C4 NO and 2 NC B207AC. . .D

* Dc operation—When specifying form, allow one additional normally closed interlock above circuit requirements. Thisinterlock is required to insert holding resistor in series with coil. Price includes resistor.† For purposes of contactor selection, 8-hr rating is synonymous with continuous rating.

Fig. 22. 100-amp field contactor

Fig. 23. 265-amp field contactor

Step 2—Add Coil Number

Volts FrequencyIC2812 Form

B107DA B107DB B207AC110/115 60 Hertz 2 . . . 1220/230 60 Hertz 3 . . . 83440/460 60 Hertz 4 . . . 50550/575 60 Hertz 5 . . . 4

115/125 Dc . . . 2 21230/250 Dc . . . 3 20

48 Dc . . . 4 39

PANEL LAYOUT DIMENSIONS

A B C D E F Depth*

B107 12 6 11 5⁄8 12 1⁄4 3 5⁄16 7 7⁄8B207 17 1⁄2 15 1⁄2 13 15 6 1 19 17⁄16

* Includes extensions back of base.

Fig. 24.

ACCESSORIES—Supplied for

separate mounting

See page 5-7 for dimensions.

Holding Resistor

VoltsDc

IC2812B107 IC2812B207Resistor68A7004

Resistor68A7004

115/125 B100G250KA-TH‡ A100G150EA-TH230/250 B100G750KA-TH§ A100G500EA-TH‡ Set slider at 36 ohms.§ Set slider at 125 ohms.

Field Contactors5-14

IC2812B107, B207, MOTOR FIELD CONTACTORS


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DESCRIPTION

The IC2812 field controllers are for theapplication and removal of dc power froman exciter or generator field circuit. Thecontroller consists of two Normally Open(NO) power circuits and one NormallyClosed (NC) power circuit and associatedcontrol and protective relaying. The 2 NOcontacts apply dc power to the machinefield. The NC contact inserts a resistor inthe field circuit to discharge the energywhen the field power circuit is opened. Thecontacts are arranged in a make-beforebreak configuration. The contactor is me-chanically latched when closed, and can beelectrically or mechanically tripped.

APPLICATION

Determine the Amperes of the Field atFull Load (AFFL) rating. This AFFL ratingshould be on the nameplate of the machine(exciter or generator) on which the fieldbreaker is to be used. This AFFL rating de-termines which contator is applicable.

CONSTRUCTION

The controller is a non-drawout type, witha padlock feature to lock the contactor inthe open position. The 900 amp and 2500amp controllers are incorporated into anangle iron frame assembly with front coverwhich is designed for mounting inside acubicle. The 265 amp assembly is based

mounted. These controllers include auxil-iary relays for remote functions, an anti-pump circuit and close and trip push-but-tons mounted on the front cover.

The anti-pump circuit ensures that thecontactor operates only once during theclose operation. A total of 11 auxiliary cir-cuits are available for interlocking. All de-vices are wired to a common terminalboard.

References:

Instruction BooksB307 ...............GEK 83786B407 ...............GEK 83787B507 ...............GEK 83785

Dc PowerOperation Electrical

InterlocksIC2812Form8-hr Open

Rating†Max AmpInterrupt

MaxVolts

265 1000 250 AcDc* 5NO-7NC B507

900 3000 375 AcDc* 5NO-7NC B307

2500 9000 500 AcDc* 5NO-7NC B407

*Dc operation—When specifying form, allow one additional normally closed interlock above circuit requirements. Thisinterlock is required to insert holding resistor in series with coil. Price includes resistor.†For purpose of contactor selection, 8-hr rating is synonymous with continuous rating.

Fig. 25. IC2812B407

DIMENSIONS:Form Width Height Depth‡

B307 32 3⁄4 27 3⁄8 26 5⁄8B407 32 3⁄4 38 3⁄8 29 5⁄8B507 35 15⁄16 24 16 1⁄8

‡Including bus extention, rear of base. For other mount-ing dimensions, refer to company.

HOW TO ORDER

1. Specify form and provide coil voltage,interlock arrangement required.

2. Provide generator nameplate data.

Exciter/Generator Field Controller 5-15

IC2812, B307, B407, B507


CON

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RELA

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WHERE TO USE

Use for general-purpose relaying, under-voltage protection, plugging, and similar ap-plications. Relays are available with eithershunt or series coils. They can be mountedon either steel or insulating panels.

Choose general-duty relays for normalservice or where space is limited. Selectheavy-duty relays for severe service or whenmore than four circuits are required.Latched-in relays are used for overvoltage orovercurrent protection. Note that relays forcontrol of circuits 48 volts and below havecontacts designed especially for this voltage.

Complete relays are recommended whenapplications are known in advance. Build-ing-block units are recommended when ap-plications vary in number of circuits andcontact arrangements.

Contacts can be changed from normallyopen to normally closed and vice versa, ex-cept that general-duty relays should not ex-ceed two normally closed contacts. To as-sure proper clearance on NO-NCcombination, locate NC contact on bottom.

Fig. 26. IC2820A200 General-duty relay

Fig. 27. IC2820A100 Heavy-duty relay

HOW TO SELECT ASSEMBLED RELAYS

Step 1—Select Form—General Duty or Heavy Duty

Numberof

Contacts

Contact Arrangement Unit-mounted (Open)

NO NC IC2820Form*

General-duty, 0-48 Volts Dc

10 1 A200B. . .CB1 0 A200B. . .CC

20 2 A200B. . .CD1 1 A200B. . .CE2 0 A200B. . .CF

42 2 A200B. . .CG3 1 A200B. . .CH4 0 A200B. . .CJ

General-duty, 49-600 Volts Dc

10 1 A200B. . .B1 0 A200B. . .C

20 2 A200B. . .D1 1 A200B. . .E2 0 A200B. . .F

42 2 A200B. . .J3 1 A200B. . .K4 0 A200B. . .L

Heavy-duty, 0-48 Volts Dc

10 1 A100BB. . .JW1 0 A100BB. . .JU

20 2 A100BB. . .JT1 1 A100BB. . .JF2 0 A100BB. . .JV

4

0 4 A100BB. . .HB1 3 A100BB. . .HC2 2 A100BB. . .HE3 1 A100BB. . .HK4 0 A100BB. . .HU

Heavy-duty, 49-600 Volts Dc

1

0 1 A100AB. . .B0 1 A100BB. . .B1 0 A100AB. . .C1 0 A100BB. . .C

2

0 2 A100AB. . .D0 2 A100BB. . .D1 1 A100AB. . .E1 1 A100BB. . .E2 0 A100AB. . .F2 0 A100AB. . .F

4

0 4 A100BB. . .G1 3 A100BB. . .H2 2 A100BB. . .J3 1 A100BB. . .K4 0 A100BB. . .L

6

0 6 A100BB. . .AB1 5 A100BB. . .AD2 4 A100BB. . .AE3 3 A100BB. . .AF4 2 A100BB. . .AG5 1 A100BB. . .AH6 0 A100BB. . .AJ

8

2 6 A100BB. . .BB3 5 A100BB. . .BC4 4 A100BB. . .BD5 3 A100BB. . .BE6 2 A100BB. . .BF7 1 A100BB. . .BG8 0 A100BB. . .BH

10

4 6 A100BB. . .CB5 5 A100BB. . .CC6 4 A100BB. . .CD7 3 A100BB. . .CE8 2 A100BB. . .CF9 1 A100BB. . .CG

10 0 A100BB. . .CH

12

6 6 A100BB. . .CJ7 5 A100BB. . .CK8 4 A100BB. . .CL9 3 A100BB. . .CM

10 2 A100BB. . .CN11 1 A100BB. . .CP12 0 A100BB. . .CQ

NOTE: Relays for Ac operation—Refer to company.*Insert coil # in blank space from Step. 2.

General Purpose Relays5-16

IC2820A100, A101, A200


CON

TRA

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RS,

RELA

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HOW TO ORDER

Relays with shunt coils—Order by com-plete IC number including coil number.EXAMPLE: To order a four-circuit relay withtwo normally open and two normally closed sets ofcontacts for operation on 230 volts dc.

Factory Assembled: SpecifyIC2820A100BB 2 J

Interlocks-Steps 1

Coil Number—Step 2Basic Form—Step 2

EXAMPLE: Same as above except latched-intype.IC2820A101AD 2 J

Contacts—Step 1

Coil Number—Step 2Basic Form—Step 1

Building Block: Specify

Qty 1—IC2820A100BB2Qty 2—IC2956A200CQty 1—IC2956A201B

Relays with series coils—Order by com-plete IC number and specify current ratingrequired.

DIMENSIONS AND RATINGS

Refer to page...............................................5-20

Weight..........................................................5-20

References:

Instruction Book...........................GEH 1941Renewal Parts A100.......................GEF 4112

Fig. 28. Latched-in relay

Fig. 29. Building-block units

HOW TO SELECT ASSEMBLED RELAYS

Step 1—Select Form—Latched-in

Numberof

Contacts

Contact Arrangement Unit-mounted (Open)

NO NC IC2820Form*

Latched-in Relay, Manually Reset

10 1 A101AA. . .B

1 0 A101AA. . .C

20 2 A101AA. . .D

1 1 A101AA. . .E

2 0 A101AA. . .F

42 2 A101AD. . .J

3 1 A101AD. . .K

4 0 A101AD. . .L

* Insert coil # in blank space from Step 2.

Step 2—Insert Coil Number

Typeof

Coil

Coil Rating IC282OA100or

IC2820A101IC2820A200Dc

VoltsOhms at 25 C

A100, A101 A200Shunt 115/120 725 830 3 3

Shunt 230/240/250 2790 3200 2 2

Shunt 500 10650 . . . 4 85

Shunt 550 17400 . . . 5 86

Series 0.3 to 1500 amperes * . . .

* Specify current rating required.

HOW TO SELECT BUILDING-BLOCK UNITS

Building-blockUnit

Application0-48 V Dc 49-600 V DcCatalogNumber

CatalogNumber

General-duty Relay

1—Frame-and-coilassembly

115/120 V coil IC2820A200B3 IC2820A200B3

230/240/250 V coil IC2820A200B2 IC2820A200B2

2—Contact blocks2 NO circuits IC2956A205A IC2956A200A

1 NO, 1 NC circuits IC2956A205C IC2956A200C

2 NC circuits IC2956A205B IC2956A200B

3—Mounting kits1 contact block (left) IC2956A201M IC2956A201M

2 contact blocks IC2956A201N IC2956A201N

Heavy-duty Relay

1—Frame-and-coilassembly

115/120 V coil IC2820A100BB3 IC2820A100BB3

230/240/250 V coil IC2820A100BB2 IC2820A100BB2

500 V coil IC2820A100BB4 IC2820A100BB4

550 V coil IC28220A100BB5 IC2820A100BB5

0.3-300 amp series coil IC2820A100BB† IC2820A100BB†

2—Contact blocks2 NO circuits IC2956A205A IC2956A200A

1 NO, 1 NC circuits IC2956A205C IC2956A200C

2 NC circuits IC2956A205B IC2956A200B

3—Mounting kits

1 or 2 contact blocks IC2956A201B IC2956A201B

3 contact blocks IC2956A201C IC2956A201C

4 contact blocks IC2956A201D IC2956A201D

5 or 6 contact blocks IC2956A201E IC2956A201E

† Specify current rating.

General Purpose Relays 5-17

IC2820A100, A101, A200


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RELA

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WHERE TO USE

Timing relays are used for motor acceler-ation, sequence interlocking, and other ap-plications requiring delayed opening orclosing of control circuits. Relays operate on

the flux-decay principle—dropout being de-layed by slowing the rate of flux decay. Non-magnetic armature shims of different thick-ness provide differing lengths of time delay.Some final adjustment can be made by vary-ing tension of the armature spring.

Choose IC2820A100A relays for two cir-cuits and minimum mounting space.Choose IC2820A100B relays for either twoor four circuits and added time delay perthe following table.

Choose between completely assembledrelays and building-block units on the basisof purchasing perference. If applicationscan be predicted, completely assembled re-lays may be desired. If applications vary innumber of circuits and arrangement, build-ing-block forms may be more economicaland practical.

HOW TO ORDER

Relays for dc operation—Order by com-plete DS number including time-delay des-ignation and coil number.

EXAMPLE: To order a four-circuit relay withtwo normally open and two normally closed sets ofcontacts for a time delay of 0.5 seconds and foroperation on 230 volts dc.Factory Assembled: Specify

IC2820A100B R202 J

Contacts-Step 1

Basic Form Time-delay designationStep 1 and coil number

—Step 2

Building Block: Specify

Qty 1—IC2820A100BR202Qty 2—IC2956A200CQty 1—IC2956A201B

Relays for ac operation—Order by com-plete IC number including time-delay des-ignation and coil number. Rectifiers andresistors are automatically supplied for sep-arate mounting.

Fig. 30. IC2820A100A

Step 1—Select Form

Number ofContacts

Contact Arrangement IC2820A100A IC2820A100BIC2820Form*

IC2820Form*NO NC

0–48 Volts Dc

10 1 A100A. . .HB A100B. . .JW

1 0 A100A. . .HC A100B. . .JU

20 2 A100A. . .HD A100B. . .JT

1 1 A100A. . .HE A100B. . .JF

2 0 A100A. . .HF A100B. . .JV

4

0 4 . . . A100B. . .HB

1 3 . . . A100B. . .HC

2 2 . . . A100B. . .HE

3 1 . . . A100B. . .HK

4 0 . . . A100B. . .HU

49–600 Volts Dc

10 1 A100A. . .B A100B. . .B

1 0 A100A. . .C A100B. . .C

20 2 A100A. . .D A100B. . .D

1 1 A100A. . .E A100B. . .E

2 0 A100A. . .F A100B. . .F

4

1 3 . . . A100B. . .H

2 2 . . . A100B. . .J

3 1 . . . A100B. . .K

4 0 . . . A100B. . .L

* Insert time delay designation and coil # in blank space from Step 2

References:

Instruction Book...........................GEH 1941Renewal Parts A100.......................GEF 4112

RelayTiming Range in Seconds2 Circuits 4 Circuits

IC2820A100A 0.40—2.0 . . .IC2820A100B 0.25—2.0 0.30—1.5

Timing Relays5-18

IC282OA100


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Selection of time delay—Select time delayso that the desired delay falls in the middleof the listed time-delay range. Adjust withinrange by means of armature spring.Ac operation—Price for ac operation in-cludes rectifier and resistor for separatemounting.Contacts—To insure proper clearance ofNO-NC forms locate NC contact at bottomof contact block.

Step 2—Insert Time-delay Designation and Coil NumberTime Delay in Seconds Designation

One or TwoCircuits

FourCircuits

Dc Operation Ac Operation*115/120 V 230/240/250 V 500 V 550/600 V 115 V 230 V 460 V

IC2820A100A or IC2820A100B

0.4—0.6 0.3—0.45 X203 X202 X204 X205 X650 X651 X6520.5—0.8 0.4—0.6 R203 R202 R204 R205 R650 R651 R652

0.75—1.25 0.6—0.9 B203 B202 B204 B205 B650 B651 B6521.0—1.4 0.75—1.1 F203 F202 F204 F205 F650 F651 F6521.3—1.6 1.0—1.2 E203 E202 E204 E205 E650 E651 E6521.5—2.0 1.1—1.5 D203 D202 D204 D205 D650 D651 D652

*Rectifiers and resistors included as part of this number. Use ac coil operation price.

ACCESSORIES for specified voltages only,

and for separate mounting

ControlVolts

IC2820A100A and A100B

Rectifier ResistorCat. No. 68A7004

115 Ac IC3500A403C2 A50E25DA-TH230 Ac IC3500A403C6 A50E50DA-TH460 Ac IC3500A403C5 A50E2500DA-TH500 Dc . . . A50E2500DA-TH

550/600 Dc . . . A50E4000DA-TH

Dimensions of Accessories—Refer to page 5-7.

Fig. 31. IC2820A100B building-block units

Fig. 32. Connections for ac operation. (Note: open

either ac side alone or ac and dc sides simultaneously)

HOW TO SELECT BUILDING-BLOCK UNITS

Step 1—Select Frame-and-coil AssemblyTime Delay in Seconds Frame-and-coil Assembly

One or TwoCircuits

FourCircuits 115/120 Vdc 230/240/250 Vdc 500 Vdc† 550/600 Vdc†

0.25—0.35 0.2—0.25 IC2820- IC2820- IC2820- IC2820-A100EM203 A100EM202 A100EM204 A100EM205

0.4—0.6 0.3—0.45 IC2820- IC2820- IC2820- IC2820-A100BX203 A100BX202 A100BX204 A100BX205

0.5—0.8 0.4—0.6 IC2820- IC2820- IC2820- IC2820-A100BR203 A100BR202 A100BR204 A100BR205

0.75—1.25 0.6—0.9 IC2820- IC2820- IC2820- IC2820-A100BB203 A100BB202 A100BB204 A100BB205

1.0—1.4 0.75—1.1 IC2820- IC2820- IC2820- IC2820-A100BF203 A100BF202 A100BF204 A100BF205

1.3—1.6 1.0—1.2 IC2820- IC2820- IC2820- IC2820-A100BE203 A100BE202 A100BE204 A100BE205

1.5—2.0 1.1—1.5 IC2820- IC2820- IC2820- IC2820-A100BD203 A100BD202 A100BD204 A100BD205

Selection of Time Delay. Select time delay so that the desired delay falls in the middle of the range of adjustment.† Includes series resistor. See ACCESSORIES above.

Step 2—Select Contact Blocks

Circuits Contact Block for0-48 Vdc

Contact Block for49-600 Vdc

2 NO IC2956A205A IC2956A200A1 No, 1 NC IC2956A205C IC2956A200C2 NC IC2956A205B IC2956A200B

Step 3—Specify Mounting Kit (1 or 2 blocks)Mounting Kit

IC2956A201B

Step 4—Specify Shim Kit(Required only to change time delay. Kit permits change to any range listed above.)

Shim KitFor IC2820A100B

117A8883G1

Timing Relays 5-19

IC2820A100


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Fig. 33. IC2820A100B assembled

MOUNTING DIMENSIONS (FRONT VIEW)(For dc operation*)

Fig. 34. Unit-mounted

CONTACT RATINGS

Contacts Volts

Rating in Amperes

Carry Make

BreakInductive Load‡

BreakNoninductive Load

One Circuit Two Circuitsin Series One Circuit Two Circuits

in Series48 Volts 12 Vdc & below 10 10 8.0 10.0 10.0 . . .and 24 Vdc 10 10 4.0 8.0 6.0 . . .belowp 48 Vdc 10 10 1.3 2.6 1.95 . . .

49-600 Volts

115/120 Vdc 10 60 1.8 4.0 2.7 6.0230/240/250 Vdc 10 30 0.5 1.2 0.75 1.8500/550 Vdc 10 12 0.2 0.35 0.3 0.525115 Vac 10 60 6.0 . . . 6.0 . . .230 Vac 10 30 3.0 . . . 3.0 . . .460 Vac 10 15 1.5§ . . . 1.5§ . . .575 Vac 10 12 1.2§ . . . 1.2§ . . .

‡ Ratings based on contactor coil currents, not brake or field-coil circuits.§ Because of arc flare, allow 1 inch clearance through to ground, or 2 inch clearance to another contact block or interlockwhen open sides face each other.p 48-volt interlocks have special tips for making circuits at minimums of 500 millivolts and 0.018 amperes.

PICKUP AND DROPOUTRelay Pickup Dropout

General-duty Cold: 63% rated volts or below 20% rated volts or aboveHot: 80% rated volts or below

Heavy-duty Cold: 63% rated volts or below 5% rated volts or aboveHot: 80% rated volts or below

RelayNumber

ofContacts

Fig.No.

ApproxWt in

Lb

Dimensions in Inches

A B C D E F G DepthMounting HolesDepth Diam

IC2820A100A 1 or 2 34 4 1⁄2 3 1⁄4 5 7⁄8 5 3⁄4 7⁄8 1⁄2 0 5 3⁄4 3⁄32 7⁄32

IC2820A100B 1 or 2 34 4 1⁄2 3 1⁄4 6 5⁄8 5 3⁄4 3⁄4 7⁄8 11⁄16 0 5 3⁄4 3⁄32 7⁄32

IC2820A100B 4 34 5 3 1⁄4 6 5⁄8 5 3⁄4 3⁄4 7⁄8 11⁄16 0 5 3⁄4 3⁄32 7⁄32

IC2820A100B 6 34 5 1⁄2 4 7⁄8 6 5⁄8 5 3⁄4 3⁄4 2 1⁄2 11⁄16 0 5 3⁄4 3⁄32 7⁄32

IC2820A100B 8 34 6 6 1⁄2 6 5⁄8 5 3⁄4 3⁄4 2 1⁄2 11⁄16 0 5 3⁄4 3⁄32 7⁄32

IC2820A100B 10 or 12 34 7 9 7⁄8 6 5⁄8 5 3⁄4 3⁄4 4 3⁄16 11⁄16 0 5 3⁄4 3⁄32 7⁄32

IC2820A101A 1 or 2 34 4 1⁄2 3 1⁄4 5 7⁄8 5 3⁄4 7⁄8 11⁄16 0 5 3⁄4 3⁄32 7⁄32

IC2820A101A 4 34 5 3 1⁄4 6 5⁄8 5 3⁄4 3⁄4 7⁄8 11⁄16 0 5 3⁄4 3⁄32 7⁄32

IC2820A200A 1 or 2 34 2 2 9⁄16 4 5⁄32 3 1⁄2 1⁄2 1 5⁄16 13⁄32 1⁄2 3 1⁄2 1⁄8 7⁄32

IC2820A200B 4 34 2 3 5⁄8 4 5⁄32 3 1⁄2 1⁄2 1 5⁄16 13⁄32 1⁄2 3 1⁄2 1⁄8 7⁄32

*For ac operation accessory dimension, refer to page 5-7.

Dc Relays5-20

General Information


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WHERE TO USE

Use for protection of dc motors anddriven machines against suddenly appliedhigh overloads. An instantaneous overloadrelay is normally used on cranes, hoists andother applications in which heavy overloadsare encountered.

The IC2820E500 relays are unit-mountedon a steel base insulated from the electricalcircuits. The panel on which relays are in-stalled need not be insulated except for rat-ings 900 amps and larger using stud-busterminals extending through the panel.

Continuous dc current ranges of 2.5 to1500 amps are available.

Trip setting can be adjusted from 100% to400% of coil rating (Forms AA and AB). For50% to 200% trip setting, substitute AG forAA and AH for AB. Easy-to-read adjustmentscale is provided.

Manual reset relays can be easily con-verted to automatic reset by the purchaserwithout additional parts.

FEATURES● Simple operation with little or no main-

tenance● 2.5 to 1500 amp capacity● Adjustable trip setting● Auxiliary interlocks available

References:

Instruction Book...........................GEH 1945Renewal Parts.................................GEF 4103

HOW TO ORDER

Order by complete IC number includingcontact designation.EXAMPLE: To order an automatic-reset, 10-amp relay with two normally closed contacts,specify

IC2820E500AA8 C

Step 1 Step 2

Fig. 35. IC2820E500 manual reset

Fig. 36. IC2820E500 automatic reset

HOW TO SELECT

Step 1—Select Form

ContinuousRating

Dc Amp

CalibrationRangeAmp

CoilConnections

Automatic-reset Manual-resetIC2820Form

IC2820Form

2.5 2.5—10 Front E500AA2. . . E500AB2. . .3.2 3.2—12.8 Front E500AA3. . . E500AB3. . .4 4—16 Front E500AA4. . . E500AB4. . .5 5—20 Front E500AA5. . . E500AB5. . .6.3 6.3—25.2 Front E500AA6. . . E500AB6. . .8 8—32 Front E500AA7. . . E500AB7. . .

10 10—40 Front E500AA8. . . E500AB8. . .12.5 12.5—50 Front E500AA9. . . E500AB9. . .16 16—64 Front E500AA10. . . E500AB10. . .20 20—80 Front E500AA11. . . E500AB11. . .25 25—100 Front E500AA12. . . E500AB12. . .32 32—128 Front E500AA13. . . E500AB13. . .40 40—160 Front E500AA14. . . E500AB14. . .50 50—200 Front E500AA15. . . E500AB15. . .60 60—240 Front E500AA16. . . E500AB16. . .75 75—300 Front E500AA17. . . E500AB17. . .

100 100—400 Front E500AA18. . . E500AB18. . .150 150—600 Front E500AA19. . . E500AB19. . .200 200—800 Front E500AA20. . . E500AB20. . .300 300—1200 Front E500AA22. . . E500AB22. . .300 300—1200 Back E500AA23. . . E500AB23. . .600 600—2400 Front E500AA24. . . E500AB24. . .600 600—2400 Back E500AA25. . . E500AB25. . .900 900—3600 Back E500AA26. . . E500AB26. . .

1500 1500—6000 Back E500BA27. . . E500AS27. . .

Front-connected relays—For back-of-panel wiring of front-connected relays, refer to company.Back-connected relays—Back-connected relays must bemounted on insulated panels to prevent grounding of stub-busterminals.

Contact arrangement—Contacts can be changed by pur-chaser from normally open to normally closed, and vice versa.To insure proper clearance of NO-NC forms, locate NC con-tact at bottom of contact block.Interlock contact ratings—Refer to page 5-20.

Step 2—Add Contact DesignationContact Arrangement Designation

1 NC, 1 NO B2 NC C2 NO D

MOUNTING DIMENSIONS

Fig. 37.

Instantaneous Overload Relays 5-21

IC2820E500


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CONTACT RATINGS

Refer to page 5-20.

WIRING SYMBOL

WHERE TO USE

Use to protect dc shunt or compound-wound motors against loss of field excita-tion. The coil of the relay is connected inseries with the motor field. When excitationis lost, the relay drops out and opens themotor line contactor.

Select relay so that continuous rating willnot be exceeded by the rated field currentand the relay calibration range permits

pick-up to be set below minimum field cur-rent. Relay will not protect against over-speed due to weak field unless the fieldcurrent decreases below the relay dropoutsetting.

HOW TO ORDER

Order by complete IC number. EXAM-PLE: IC2820D300A2.

Fig. 38. IC2820D300

MOUNTING DIMENSIONS

(FRONT VIEW)

Fig. 39. IC2820D300

References:

Instruction Book...........................GEH 3055Renewal Parts.................................GEF 4101

HOW TO SELECTContinuous

RatingAmp

Pick-upCalibration

Range—Amp

CoilResistance

Ohms at 20 CRelay Form

0.50 0.13—0.36 50.4 IC2820D300A2-Obsolete0.50 0.072—0.145 50.4 IC2820D300B2-Obsolete0.63 0.16—0.45 32.2 IC2820D300A30.63 0.09—0.18 32.2 IC2820D300B3

0.80 0.20—0.57 20.0 IC2820D300A4-Obsolete0.80 0.114—0.228 20.0 IC2820D300B41.00 0.25—0.71 12.6 IC2820D300A51.00 0.143—0.28 12.6 IC2820D300B5

1.25 0.31—0.89 8.05 IC2820D300A61.25 0.166—0.36 8.05 IC2820D300B61.6 0.40—1.13 5.00 IC2820D300A71.6 0.227—0.45 5.00 IC2820D300B7

2.0 0.50—1.42 3.08 IC2820D300A82.0 0.285—0.57 3.08 IC2820D300B82.5 0.63—1.78 1.96 IC2820D300A92.5 0.357—0.71 1.96 IC2820D300B9

3.2 0.80—2.28 1.22 IC2820D300A10-Obsolete3.2 0.456—0.91 1.22 IC2820D300B10-Obsolete4.0 1.00—2.86 .775 IC2820D300A114.0 0.57—1.14 .775 IC2820D300B11

5.0 1.25—3.56 .485 IC2820D300A125.0 0.71—1.4 .485 IC2820D300B126.4 1.60—4.5 .286 IC2820D300A136.4 0.90—1.8 .286 IC2820D300B13

7.4 1.8—5.26 .20 IC2820D300A16-Obsolete7.4 1.05—2.1 .20 IC2820D300B14-Obsolete8.0 2.00—5.7 .16 IC2820D300A258.0 1.14—2.3 .16 IC2820D300B15

12.0 2.9—8.3 . . . IC2820D300A2612.0 1.67—3.33 . . . IC2820D300B20-Obsolete17.0 4.4—12.5 . . . IC2820D300A2717.0 2.5—5.0 . . . IC2820D300B21

25.0 7.0—20.0 . . . IC2820D300A1725.0 4.0—8.0 . . . IC2820D300B22-Obsolete50.0 14.5—41.7 . . . IC2820D300A2850.0 8.4—16.8 . . . IC2820D300B23

115.0 29.0—83.0 . . . IC2820D300A29115.0 16.7—33.3 . . . IC2820D300B25

Fig. 40. IC2820D300A Fig. 41. IC2820D300B

Pickup and dropout curves

Field-loss Relays5-22

IC2820D300


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DESCRIPTION

GROUND-FAULT RELAY

The IC2820A102 is a fast-acting hand-re-set relay designed to interrupt controlpower of a line contactor on sensing aground current in the lines to an ac motorload or other ac equipment. If a groundfault can be removed within a few cycles ofits initiation, damage to a motor or other acequipment can be minimized. For example,on a large induction or synchronous motorwhen an insulation failure occurs toground, the fault current will be removedbefore damage is done to the laminations,thus making it possible to repair the motorat a minimum of expense and downtime.

As shown in the elementary diagram, therelay is designed for use with a window-typecurrent transformer* where the three loadleads (for a 3-phase system) are placedthrough the window. When a ground faultoccurs, the vector sum of the currents in theload cables will not equal zero and this sumwill cause a current in the secondary of thecurrent transformer that will energize therelay coil. This current will actuate the relayto ‘‘TRIP’’, opening the normally closedcontacts, and closing the normally open

contacts shorting out the rectifier and coil.The trip lever holds the relay in this positionuntil the lever is moved in a counterclock-wise direction to the ‘‘RESET’’ position.The photo shows the reset lever in the‘‘TRIP’’ position and also the rectifier andresistor mounted on the relay.DIFFERENTIAL RELAY

The IC2820A102A differential relay de-tects any difference in current going in andout of each phase of a wye-connected mo-tor. The current difference will trip the dif-ferential relay and shut down the motor byopening the motor-line contactor.

As shown in the elementary diagram (Fig.50), separate relays and window-type cur-rent transformers* are connected in eachphase of the motor.

*The IC2820A102 ground-fault and differential relay isspecifically designed to be used with GE transformertypes JCS-0 (50:5, 100:5), JAH-0 (300:5, 400:5) and JCH-0(300:5) (Transformer must be ordered separately.) DONOT apply with other transformers.

CONTACT RATINGS

Refer to page 5-20.

HOW TO ORDER

Order by complete IC number.

Fig. 47. IC2820A102 relay

Catalog No. PolesGE Transformer Pick-up Amperes (Approx)

JCS-050:5

JCS-0100:5

JCH-0300:5

JAH-0300:5

JAH-0400:5

GROUND-FAULT RELAY

IC2820A102BE 1 NC 8 13 N/A 25 30IC2820A102BF 1 NC 6 N/A 10 12 14IC2820A102BG 1 NO 8 13 N/A 25 30IC2820A102BH 1 NO 6 N/A 10 12 14DIFFERENTIAL RELAY

IC2820A102AM 1 NC 8 13 N/A 25 30IC2820A102AK 1 NO 8 13 N/A 25 30


Fig. 48. Depth front of base553⁄4 inches

Fig. 49. Sample elementary diagram for IC2820A102

Forms BE and BG. Forms BF and BH do not use 4-ohm

resistor.

Fig. 50. Sample elementary diagram of differential-relay

circuit, IC2820A102. One relay and current transformer

are connected in each motor phase.

REFERENCES:

Instructions................................GEH-3071Renewal Parts Bulletin...............GEF-4318

Ac Low-voltage Relays 5-23

IC2820A102


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DESCRIPTION

The IC2820C100L (FR) field-applying re-lay working in conjunction with auxiliaryrelay IC2820C100B (FRX) provides time de-lay for closing the field contactor when theproper dc voltage is available to pull themachine into step. Sliding bi-metal shims,by which the air gap may be changed, pro-vides for adjustment of the time dropout.

The relay is designed for mounting onsteel or insulated bases and uses the IC2956universal interlock for its contacts.

CONTACT RATINGS

Refer to page 5-20.

HOW TO ORDER

By complete IC and form number. Volt-ages not listed, order by description.


Fig. 52. Depth front of base553⁄4 inches

FIELD APPLICATION RELAYIC2820Form

DcVolts Contacts

C100L2 125 2 NO, 1 NCC100L3 250 2 NO, 1 NCC100B10 125 2 NO, 1 NCC100B11 250 2 NO, 1 NC

OTHER FORMSIC2820Form

C100A*C100B*C100C*C100D*C100G*C100L*C100M*C100N*C100R*C100S*

*Coil designation. Does not affect price.

REFERENCES:

PublicationsInstructions- A, B, L..................GEH-4604

C, D, G, M,N, R, S..................GEH-1947

Renewal Parts Bulletin...............GEF-4152

Fig. 51. IC2820C100 field-applying relay

Field Application5-24

IC2820C100


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section 5 rainbow catalog

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