8110-10SERVICE BULLETINPage 1August, 1988

CLASS 8110 TYPE V3540E MEDIUM VOLTAGEVACUUM CONTACTOR

CONTENTSPage

PrecautionsIntroductionGeneral DescriptionUncratingInspectionContactor Operation. . . .Maintenance and TestingTroubleshootingParts List

111222

3-8 Rear View9

10-11

PRECAUTIONS

DANGERHAZARD OF ELECTRICAL SHOCK OR BURNPOWER MUST BE DISCONNECTED FROMTHE CONTROLLER AND CONTACTOR PRIORTO PERFORMING ANY INSTALLATION ORMAINTENANCE. THE EQUIPMENT HAS BEENDESIGNED TO PERMIT MAINTENANCEAND/OR TESTING ON THOSE COMPONENTSTHAT ARE DISCONNECTED FROM THE MAINPOWER. WHEN PERFORMING THIS WORK,EXTREME CAUTION MUST BE EXERCISED INVIEW OF THE PRESENCE OF HAZARDOUSVOLTAGE.

Front View

Type V3540E vacuum contactors. These instruc-tions apply primarily to contactors as used withcontrollers. For other applications contact yourlocal Square D representative.

NOTE: READ ALL INSTRUCTIONS BEFORE WORK-ING ON THIS EQUIPMENT.

GENERAL DESCRIPTIONThe Class 8110 Type V3540E contactor is a threepole device available only in a bolted design. Thecontactor is rated at 5,000 volts, 360 amperes(enclosed), 60 KV BIL, with an interrupting rating of6,000 amperes symmetrical.The basic contactor contains three vacuum bottles,dc operating coil with rectifier circuit and auxiliarycontacts. This basic contactor is used as the main(M) contactor on:

Full voltage, non-reversing controllersReduced voltage, autotransformer controllersWound rotor motor controllers

Medium voltage controllers are provided with manysafety features. Nevertheless, they control powercircuits with high voltage and high fault capacitywhich can result in a risk of severe electrical shockor burn. The following list of “PRECAUTIONS” mustbe studied and followed during installation, opera-tion and servicing of the equipment.1. Read this service bulletin prior to installing or

operating the equipment.2. If motor controllers and/or contactors are to be

stored prior to installation, they must be pro-tected from the weather and be kept free of con-densation and dust.

3. Use extreme care when moving or positioningcontactors (even if crated) as they contain devicesand mechanisms which may be damaged byrough handling.

4. Be sure all barriers are in place before operatingcontrollers.

5. Only authorized personnel should be permittedto operate or service the contactors andcontrollers.

The device is also used as the start (S) and run (R)contactors on reduced voltage, primary reactorcontrollers.Two contactors (2 pole or 3 pole) can be mechani-cally interlocked in a horizontal arrangement bychanging the slider mechanism of each contactor.Three pole mechanically interlocked devices areused as forward (F) and reverse (R) contactors onfull voltage reversing controllers; and two polemechanically interlocked devices are used as start(S) and run (R) contactors on reduced voltageautotransformer controllers.

iINTRODUCTION

This manual covers the description, installation,operation and maintenance of Square D Class 8110

5 QURRE T1 COMPANYP. O. Box 9247

Columbia, S. C. 29290

©Square D Company, 1988NEW

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A mechanical latching mechanism may be addedto a basic contactor to lock the contactor closed.The Class 8110 Type V3540M mechanically latchedcontactor is used primarily for:

Transformer feeder circuitsTransfer schemes

3.Take care when unpacking not to damage con-tents by inserting tools into crates. Use a nailpuller and wire cutter. Do not insert pry bar incrate to force open.

INSPECTIONApplications where it is desirable to have the con-tactor remain closed, should the voltage dip or 1.Check the contactor visually for good condition.

Inspect all parts for secure mounting and goodelectrical connections.

2. Check to be sure that the armature assemblyoperates freely. (Refer to CONTACTOR OPERA-TION section.)

3.Check to be sure that all connections are secure.4. Inspect control circuit receptacle for possible

damage.

fail.

CAUTIONDO NOT USE CONTACTOR LINE BUS TO MOVE ORLIFT CONTACTOR. LIFTING BY BUS MAY CAUSEMISALIGNMENT.MAKE SURE, FOLLOWING ANY INSPECTION,THAT ALL CONNECTIONS ARE TIGHT. ALSO,MAKE SURE VACUUM BOTTLE ASSEMBLIES ARENOT DAMAGED AND ARE PROPERLY INSTALLEDBEFORE ENERGIZING THE CONTACTOR.

Class 8110 Type V3540M mechanically latched contactor.Electrical release solenoid mounted on right side

of latching mechanism is optional

NOTE: The basic Type V3540E vacuum contactorassembly for Model 3 Series B Class 8198 and Class8196 controllers are the same and can be inter-changed with no modifications required.

ROUTINE INSPECTIONClass 8110 Type V3540E vacuum contactors areinterchangeable with Class 8110 Type A3540E airbreak contactors after completing appropriatecontroller modifications. Refer to POWER FUSECOORDINATION section in the appropriate con-troller service bulletin for further information.

The contactor should be inspected at intervalsdetermined by the service conditions. Ensure thatsurfaces of the molded parts are clean to preventtracking.

NOTE: If problem is found during inspection, repairsshould be made immediately.UNCRATING

CONTACTOR OPERATIONWhen supplied for use with Class 8196 and Class8198 controllers, the Class 8110 contactor is shippedinstalled in the controller section. If the contactoris installed in the controller section, proceed withthe steps outlined under “Inspection”. However,some contactors (i.e. spare contactors) are shippedseparately. In these cases, the following stepsshould be taken.

For maintenance or test purposes the contactor canbe operated either manually per instructions listedin Manual Contactor Operation section, or electri-cally by connecting a separate 120V ac source ofcontrol power to the contactor through use ofcontactor test cord (Square D part number51034-241-50).

1. Check packing list against the order to make sureshipment is complete and the correct com-ponents are received.

2. Examine shipping crate before unpacking thecontactor to make sure it has not been damagedin transit. If shipping crate is damaged, pay par-ticular attention when unpacking to see if con-tents are also damaged. Notify carrier if damageis found. Also, notify your local Square D fieldsales office of damage.

INSTALLATION

Check that contactor nameplate information (class,type and form) matches contactor information onlabel located on inside of controller medium voltagecompartment door.

Follow contactor installation instructions which arefound in the controller service bulletin.

SqURREH COMPANY

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30 ohms. If the coil measures open or less than 19ohms, it is defective and must be replaced. If coilresistance exceeds 30 ohms and the coil is hot,overheating is indicated. Refer to TROUBLESHOOT-ING chart.Disconnect coil wires from the coil. Remove bolt(A) (See Figure 2) from magnet frame and slidemagnet assembly to the left for removal of coil. (Donot remove spring washer from core.) Install newcoil on magnet assembly and reinstall magnetassembly (items 33, 34 and 31) to contactor. Reat-tach coil wires.

MAINTENANCE AND TESTING

DANGERHAZARD OF ELECTRICAL SHOCK OR BURNALL POWER SHOULD BE DISCONNECTEDFROM THE CONTROLLER EQUIPMENTPRIOR TO PERFORMING ANY TROUBLE-SHOOTING OR MAINTENANCE WORK ONTHE CONTACTOR. HOWEVER, THE EQUIP-MENT HAS BEEN DESIGNED TO PERMITMAINTENANCE AND/OR TESTING ON THECONTACTOR AFTER IT HAS BEEN ISOLATEDFROM THE MAIN POWER. WHEN PERFORM-ING THIS WORK, EXTREME CAUTION MUSTBE EXERCISED IN VIEW OF THE PRESENCEOF HAZARDOUS VOLTAGE.

1. CLEANINGClean all dirt from the contactor. Pay particularattention to molded parts and tracking surfaces.Foreign materials on these surfaces should beremoved.2. CONTACT TIP GAP MEASUREMENTThe contact tip gap measurement must be takenwith the contactor fully closed. The armature platemust be positioned against the magnet frame forthe contactor to be fully closed. (Refer to CONTAC-TOR OPERATION section.)Measure gap from bottom of gap adjustment nut(A) (see Figure 1) to the top of metal pivot plate (B).DO NOT CHANGE ADJUSTMENT OF NUT. Thismeasurement must be .035 inches minimum. Ifmeasurement is less than .035 inches, the contacttips have worn beyond acceptable tolerances anda new bottle assembly is required.

FIGURE 2

4. REACTOR / RECTIFIER /ELECTRICAL INTER-LOCK REPLACEMENTu A

/

B.035min.I - DANGER

HAZARD OF ELECTRICAL SHOCK OR BURNCONTACTOR CONTROL CABLE MUST BEDISCONNECTED TO PREVENT POSSIBLEBACKFEEDING OF THE CONTROL TRANS-FORMER AND GENERATION OF HAZARD-OUS VOLTAGE ON THE PRIMARY SIDE.

... '-V

To replace these components, the contactor con-trol assembly must be removed. Access to the con-trol assembly mounting hardware is achieved afterremoving the magnet assembly (See MAGNET COILREPLACEMENT section). Remove bolts (A) (SeeFigure 3) and remove control assembly from con-tactor. After servicing assembly, reinstall contactorcontrol assembly. Before tightening bolts (A) ensurethat operator tab (B) is centered between controlassembly flanges (C) (See Figure 3).

FIGURE 1

3. MAGNET COIL REPLACEMENTNOTE: Coil resistance may be measured to deter-mine if the coil is defective.Under normal operatingconditions the coil resistance will vary from 19 to

SqURREDCDMPRNY

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Control Contact Block-j __ . . .. , i .

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FIGURE 4

D. Control Contact Block Adjustment

After the control contact block is factoryadjusted, bolt (A) (See Figure 5) is sealed withTORQ-SEAL and field adjustment is normallynot required. Adjustment of the control con-tact block may be checked as follows:

FIGURE 3

A. Rectifier ReplacementRectifier output can be measured to determinea defective device. For this test, use tape toinsulate bare ends of coil connecting leads.With contactor control assembly removedfrom contactor, apply 120 volts ac to controlterminals 1 & 4 (See Figure 16). Measure dcoutput across rectifier terminals “+” andRectifier output should be 108 ±5 volts dc ifthe supply voltage is 120 volts ac. (Rectifier dcoutput should equal 90% of ac input ±5.0 voltdc.) If rectifier is defective, replace with anew one.

An alternate test not requiring an ac power sourcecan be made with an ohmmeter set on the 1000 ohmscale and probes connected to rectifier terminalsas follows:

FIGURE 5

1) Insert a .05 inch spacer between the arma-ture and the lower leg of magnet frame (SeeFigure 5). Energize the contactor and checkby using a dc voltmeter that the voltageacross the coil is greater than 90 volts dc.

2) De-energize the contactor and replace the.05 inch spacer with a .03 inch spacer.

3) Energize the contactor and check that thevoltage across the coil is now less than 18volts dc.

4) De-energize the contactor and remove thespacer.

5. CONTROL CIRCUIT RECEPTACLE REPLACE-MENT

The receptacle for the control circuit plug consistsof a plug housing and male contact pins with wireleads inserted from the rear. No tool is required forinserting contact pins but extraction tool (SquareD Part Number 29904-08400) is required for pinremoval. This tool, inserted into the receptacle fromfront, compresses retention springs allowing thelead and pin to be withdrawn from plug housing.

REQUIREDOHMIC VALUENEGATIVE PROBEPOSITIVE PROBE

less than 100infinityless than 100infinityinfinityinfinityless than 100less than 100

AC1 +AC1AC2 +AC2

AC1+AC2+AC1AC2

B. Reactor (choke) ReplacementCheck reactor resistance. DC resistanceshould be 11 ± 3 ohms.NOTE:The normally closed contact in parallelwith the reactor must be isolated. Replace ifresistance is not within these values.

C. Electrical Interlock Contact Block Replace-mentTo replace an electrical interlock contactblock, remove the contactor control assembly.Individual contact blocks may be replaced asrequired. The control contact block to whichthe coil is connected is mounted on the leftand separate from all other contact blocks.(See Figure 4.)

SQUARE ]] COMPANY

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With the armature spring removed the contacts areclosed but the armature is not sealed against themagnet frame.To fully close the contactor and seal the armature,avoid the threaded shaft of the vacuum bottles andpush down on the contactor shaft insulator (item11). Approximately 20 pounds of force is required.

Reinstall armature spring before proceeding.

9. CONDITION OF VACUUM BOTTLE ASSEM-BLIES

If contactor has been exposed to fault conditionsas indicated by blown motor fuses, the followingchecks must be made for the vacuum bottleassemblies.

A. Physical evidence of stress (distorted, dis-colored, or cracked bottles).

B. Contact wear measurement (refer to MAINTE-NANCE, item 2).

C. Dielectric test.

Remove contactor from controller to perform theinspections and tests.

The complete receptacle can be removed from thecontactor control module by removing hardware (D)(See Figure 3) and sliding receptacle out of mount-ing slot.6. ARMATURE SPRING REPLACEMENTBefore removing armature spring (A) (See Figure 6),evenly loosen bolts (C) and allow spring guidebracket (D) to release spring pressure. Remove bolts(C), spring guide bracket (D) and spring (A) withoutdisturbing spring guide bolt (B).

DANGERPOSSIBILITY OF X- RAY EXPOSURE

PERSONNEL SHOULD BE NO CLOSER THAN10 FEET AND PREFERABLY BEHIND AMETAL BARRIER. TEST TIMES SHOULD BEKEPT TO A MINIMUM. THIS IS A PRECAU-TION UNTIL SUCH TIME AS THE POSSIBLEHAZARD IS BETTER UNDERSTOOD ANDSTANDARDS ARE PUBLISHED.

FIGURE 6

Good vacuum bottle assemblies will withstand a16.0 KV rms, 60 Hz test voltage for 10 secondsacross the open gap.

If unit fails test, replace bottle assembly with newunit.10. REPLACEMENT OF VACUUM BOTTLE

ASSEMBLIESThree major operations are required to replacevacuum bottle assembly. These operations are 1)removing existing bottle assembly,2) preparing newbottle assembly for installation and 3) installing bot-tle assembly. Each of these operations consists ofseveral steps which will be described below.

CAUTIONDO NOT ALLOW SHAFT OF THE VACUUM BOTTLEASSEMBLY TO TURN. TURNING THE SHAFT WILLDAMAGE THE BOTTLE.

To install spring, seat the spring on guide locatedon armature extension (E). Position front springguide bracket onto spring, and fasten the springguide bracket to the spring bracket by evenlytightening bolts (C).7. CONTACT SPRING REPLACEMENTThe vacuum bottle assembly must be removed fromthe contactor to replace the contact spring (item22). Prior to removing the vacuum bottle assembly,the contact tip gap measurement (refer to MAINTE-NANCE, item 2) must be recorded for use whenreinstalling the bottle.

Reinstallation of vacuum bottle assembly iscovered in 10C below. Follow these instructions andinsure that the contact tip gap measurement isadjusted to the value recorded prior to vacuum bot-tle assembly removal. This is to insure accuracy offuture contact tip wear measurements.8. MANUAL CONTACTOR OPERATIONTo operate the contactor manually, the armaturespring must be removed. (Refer to MAINTENANCE,item 6).

A. REMOVING EXISTING BOTTLE ASSEMBLY1) Remove bolt and washer (A) (See Figure 7)

holding flexible shunt to the contactor linebus. DO NOT REMOVE THE BOLT HOLDINGTHE SHUNT TO THE BOTTLE ASSEMBLY.

5QURRE nCOMPANY

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B

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FIGURE 7

2) Remove bottom bolt (B) holding vacuum bot-tle assembly to the contactor. FIGURE 9

3) Remove the lock nut (C) and gap adjustmentnut (D) from the top of the bottle assembly.

4) Lift up on the vacuum bottle assembly. (SeeFigure 8) Pull out then down on the bottomportion of the bottle assembly to remove itfrom the contactor.

CAUTIONDO NOT ALLOW SHAFT OF THE VACUUM BOTTLEASSEMBLY TO TURN. TURNING THE SHAFT WILLDAMAGE THE BOTTLE.

2) Remove the lock nut (B) and gap adjustmentnut (C) from top of bottle assembly.

3) Do not remove spring (D) and spring cup (E)from the bottle assembly.

4) Bottle assembly is now ready to install incontactor.

C. INSTALLING BOTTLE ASSEMBLY1) Place bottle assembly into contactor by

putting top of bottle assembly behind theline bus (See Figure 10). Seat spring cup inrecess at top of contactor.

FIGURE 8

B. PREPARING NEW BOTTLE ASSEMBLY

1) Remove bolt and washer (A) (See Figure 9)from the bottom of the bottle assembly.Note: This is special bolt (5/16-24 UNF-2A X1"). Do not misplace this bolt. FIGURE 10

S Q U A R E D C O M P A N Y

2) Place bottom of the bottle assembly intocontactor.

3) Gently rotate COMPLETE ASSEMBLY untilthe flexible shunt lines up with the contac-tor line bus (See Figure 11). DO NOTROTATE SHAFT OF BOTTLE ASSEMBLY.

FIGURE 13

7) Close contactor by energizing main coil withcontactor test cord (Square D part number51034-241-50).

DANGERHAZARD OF ELECTRICAL SHOCK

VOLTAGE IS PRESENT AT TERMINALS OFCOIL, RECTIFIER AND ELECTRICALINTERLOCKS.FIGURE 11

4) Install bolt and washer (A) connectingshunt to line bus (See Figure 12). 8) For a new bottle assembly place .075 inch

gauge (A) (See Figure 14) between contac-tor pivot plate (B) and gap adjustment nut(C).

A

FIGURE 12

5) Install bolt (B) into bottom of bottle assem-bly (See Figure 12). FIGURE 14

For reinstallation of a used bottle assemblyinsure that the contact tip gap measure-ment is adjusted to the value recorded priorto removal.

9) Tighten gap adjustment nut until it touchesthe gauge. DO NOT TIGHTEN OR TORQUEDOWN THIS NUT

6) Install gap adjustment nut (A) on top of bot-tle assembly and turn nut until it restsabout halfway down the shaft (See Figure13). Install lock nut (B) until it rests abovethe adjusting nut, but not touching theadjusting nut.

5QURRE T1 COMPANY

Page 8CAUTION10) Hold gap adjustment nut with a wrench. Do

not allow the nut and shaft to rotate.Tighten lock nut (A) down on gap adjust -ment nut (See Figure 15).

DO NOT ALLOW SHAFT OF THE VACUUM BOTTLEASSEMBLY TO TURN. TURNING THE SHAFT WILLDAMAGE THE BOTTLE.

11) Remove gauge.

12)Open contactor by de-energizing main coil.

13) Do not make any adjustments to bottleassemblies not changed. '

414) It is recommended that condition of vacuumbottle assemblies be checked as indicatedin MAINTENANCE, item 9.

CAUTIONMAKE SURE, FOLLOWING ANY MAINTENANCE,THAT ALL CONNECTIONS ARE TIGHT. ALSO,MAKE SURE VACUUM BOTTLE ASSEMBLIES ARENOT DAMAGED AND ARE PROPERLY INSTALLEDBEFORE ENERGIZING CONTACTOR.FIGURE 15

WIRING DIAGRAM

AUXILIARYCONTACTBLOCKS

CONTROLCONTACTBLOCK

LI L2 L3 r “

oo oL _ —c °1II A

RECT . ( + ) 2i

3A >i

l W<§> © © >

X I )X2 )X3 )>( 4 )

3

M RECEPTACLE

oooCOIL REACTOR

1 ) MAXIMUM OF NINE AUXILIARY CONTACT BLOCKS MAY BE INSTALLED.2 ) PIN & WIRE NUMBERS ARE ASSIGNED BY THE FOLLOWING RULE :

A ) N.O. BLOCKS USE PAIRS OF CONSECUTIVE, ASCENDING NUMBERS STARTING WITH #7.B ) N.C. BLOCKS USE PAIRS OF CONSECUTIVE, DESCENDING NUMBERS STARTING WITH #24 .

3 ) SEE CONTROLLER W/D FOR AUXILIARY CONTACT BLOCK CONFIGURATION.

FIGURE 16

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TROUBLESHOOTING

DANGERHAZARD OF ELECTRICAL SHOCK OR BURN

ALL POWER SHOULD BE DISCONNECTED FROM THE CONTROLLER EQUIPMENT PRIOR TO PERFORMINGANY TROUBLESHOOTING OR MAINTENANCE WORK ON THE CONTACTOR. HOWEVER, THE EQUIPMENT HASBEEN DESIGNED TO PERMIT MAINTENANCE AND/OR TESTING ON THE CONTACTOR AFTER IT HAS BEENISOLATED FROM THE MAIN POWER. WHEN PERFORMING THIS WORK, EXTREME CAUTION MUST BEEXERCISED IN VIEW OF THE PRESENCE OF HAZARDOUS VOLTAGE.

i:1 '

Since many operating problems are traced to loose circuit connections, wiring and the control circuit receptacle shouldbe inspected before proceeding.If a separate source of 120V ac control power is available, troubleshooting can be performed using either the contactorcontrol circuit receptacle and a contactor test cord (Square D part number 51034-241-50) or the controller service plugsupplied on some controllers (refer to controller service bulletin). When either is used, the control transformer is discon-nected from the control voltage. DANGER — If separate control power is applied to the contactor by other means,the control cable must be disconnected from contactor to prevent possible backfeeding of the control transformerand generation of hazardous voltage on the primary side.

TROUBLESHOOTING CHART

POSSIBLE CAUSETROUBLE ACTION1) Check that voltage to control terminals 1 & 4 is 102 to 120V ac

(See Figure 16). Refer to controller service bulletin TROUBLE-SHOOTING section if control voltage is low

2) Check that voltage at terminals 2 & 3 is zero V dc (See Figure16). Refer to controller service bulletin TROUBLESHOOTINGsection if voltage is present

3) Refer to controller service bulletin Interlock Check section andcheck mechanical interlocks

4) Refer to MAINTENANCE, item 4, and check control rectifier

5) Refer to MAINTENANCE, item 3, and check operating coil

6) Refer to MAINTENANCE, item 4, and check control interlock

1) Low control voltageContactor does not close

2) External control interlock open

3) Interference with mechanical interlocks

4) Control rectifier defective

5) Operating coil defective

6) Control electrical interlock defective orout of adjustment

1) Check that voltage to control terminals 1 & 4 is 102 to 120V ac(See Figure 16). Refer to controller service bulletin TROUBLE-SHOOTING section if control voltage is low

2) Refer to MAINTENANCE, item 4, and check control Interlock

1) Low control voltageMagnet/armature chatters

2) Control electrical interlock out ofadjustment

3) Reactor defective

4) Operating coil defective

3) Refer to MAINTENANCE, item 4, and check reactor

4) Refer to MAINTENANCE, item 3, and check operating coil

1) Check that voltage to control terminals 1 & 4 is 102 to 120V ac(See Figure 16).Refer to controller service bulletin TROUBLE-SHOOTING section If control voltage is low

2) See "operating coil hot" below

3) Refer to MAINTENANCE, item 8, and check mechanical opera-tion of contactor for free opening and closing

4) Refer to MAINTENANCE, item 9, and check vacuum bottleassemblies

1) Low control voltageSluggish contactor operation

2) Operating coil hot

3) Contactor moving parts binding

4) Vacuum bottle assembly out ofadjustment or defective

1) Control electrical interlock out ofadjustment

2) Reactor defective

3) Operating coil defective

Operating coil hot1) Refer to MAINTENANCE, item 4, and check control interlock

2) Refer to MAINTENANCE, item 4, and check reactor

3) Refer to MAINTENANCE, item 3, and check operating coil

1) Check contact spring. If broken, refer to MAINTENANCE, Item 71) Contact spring defectiveVacuum bottle assembly and/or associatedpower connectors overheat

2) Loose connections

3) Vacuum bottle assembly defective

2) Check and lighten as necessary

3) Refer to MAINTENANCE, item 9, and check vacuum bottleassemblies

SQUHRETI COMPANY

“OQ>CLASS 8110 TYPE V3540B VACUUM CONTACTOR PARTS LIST cfio

ItemItem oDescriptionNo. Part NumberDescriptionNo. Part Number

37 22903-25480 % - 24 x IV2 Set Screw% - 18 x 11/4 Hex Head ScrewC.C.C. OperatorArmature StopArmature SpringSpring BracketSpring Guide% Lock Washer% * 20 x % Hex Head Screw5/6 - 24 x 1 Cap Screw% - 18 x 2% Hex Head ScrewControl Assembly for Basic Contactor (Includes

items 50 thru 55)Control Assembly for Mechanically Latched

Contactor (Includes items 51 thru 54)ReactorRectifierPlug HousingMale Contact PinMOV AssemblyControl Contact BlockN.O. Electrical Interlock Contact Block Assembly(Includes 9001 KA2 contact block, wire and male

contact pins, item 53)N.C. Electrical Interlock Contact Block Assembly(Includes 9001 KA3 contact block, wire and male

contact pins, item 53)Mechanical Latch Attachment (Includes item 57)Extension SpringS-Hook1/8 x 1 Cotter PinElectric Release Solenoid (Refer to wiring diagram

supplied with specific equipment.)#6 Plain Washer#6 Lock Washer#6 - 32 Hex Nut

% * 18 Jam NutGap Adjustment NutLine Bus*t % Spring Washer

Lock Washer% Plain Washer% - 20 Nylok Nuty4 Plain WasherPivot Plate#10 - 32 x 1 Hex Head ScrewShaft InsulatorMounting Base% - 20 x % Hex Head Screw1/4 Lock WasherBearing RetainerContactor Frame#10 Plain Washer#10 - 32 Nylok NutBearingft - 18 Hex NutSpring CupContact SpringVacuum Bottle Assemblyfa - 18 x 1% Hex Head Screw1/4 • 28 x % Hex Head Screwsjt - 18 x iy4 Hex Head Screw

• 18 x 1 Hex Head ScrewArmature Plate% • 20 x 1% Hex Head ScrewRoller AngleMagnet CoreBearing

t 1t3851034-036-01

51034-238-5023903-32002

239 51034-231-01

51034-234-0150502-602-3151034-227-5051034-228-01

340441t 542t 64323201-002007

t44t 8t*551034-038-019t46tiof4751034-002-50

51034-219-5011

48a 51034-218-5012t13

in 51034-218-5148bt14a 51034-035-0151034-001-50

152 49 52911-064-50

27907-3410125410-0373825410-0608951034-239-509001 KA551034-240-50

162 50t17m

23201-0017029002-54000

5118a5219no 53t20Z 5421 51034-039-01

50502-601-4251034-217-50

233 55a22

23t24

55b 51034-240-51t25t26t27

51034-212-6150502-651-0752927-127-01

5628 51034-232-0157f295830 51034-233-01

51034-230-0129002-2160051034-059-5051020-041-0151034-229-01

t59316032

Coil33t61Spring Washer

Magnet Frame% - 24 Jam Nut

34f6235|63t36

t Standard hardware, listed without a Square D part number, should be obtained from a local hardware supplier.

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CS 2.5M 8/88