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TABLE OF CONTENTS

PageGENERAL INFORMATION

IntroductionGeneral DescriptionContactor Ratings

RECEIVING, UNLOADING AND UNPACKINGStoring

INSTALLATIONMountingElectrical Connections

OPERATIONPre-Energization CheckOperating DataControl Circuit Diagrams

MAINTENANCEArc Chute and Phase Barrier Removal/InstallationMain Contact Inspection/ReplacementMagnet Coil ReplacementAuxiliary Contact AdjustmentArc Chute Inspection/MaintenancePeriodic CleaningRecommended Torque Values

TROUBLE SHOOTINGTrouble Shooting Chart

PARTS LISTType 456 Air-Break Contactor

Main Contact Replacement Kit . . . .Arc Chute Replacement InformationType 456-D Dynamic Braking Contactor

2222333334444445555566799

121213

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The information contained within is intended to assist operating personnelby providing information on the general characteristics of equipment of thistype. It does not relieve the user of responsibility touse sound Practices andSafety Procedures in the installation, application, operation and mainte-nance of the particular equipment purchased.This instruction book is not atraining manual for unskilled persons.If drawings or other supplementary instructions for specific applications areforwarded with this manual or separately, they take precedence over any con-flicting or incomplete information in this manual.

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GENERAL INFORMATION

GENERAL DESCRIPTIONThe basic contactor is of compact design, 24 in. deep, 16

in. wide, and 28 in.high.The contacts are double break andhave a contact angle of 45degrees which facilitates naturalarc movement into the arc chute.This angle also provides awedging action for higher effective contact pressure. Dustand dirt slide off.

The accessibility of the contactor allows fast and conven-ient inspection and testing. The Type 456 contactor fea-tures lift out arc chutes.Hinged blow-out pole pieces swingback to expose all contacts for quick inspection and re-placement.

The supporting base is of cast aluminum. The pushrods,contact support blocks and other insulating parts are con-structed of glass polyester. All insulation in contact withhigh voltage current carrying parts is flame retardant andtrack resistant.

An auxiliary contact panel assembly for magnet opera-tion consists of a silicon rectifier, three NO - NC auxiliaryswitches and one NC long wipe switch which are mountedon an aluminum plate.The auxiliary switches are operatedby an auxiliary drive link from the magnet armature.

The stationary contact assemblies are mounted on aglass polyester support blr.uk along with the blowout coilassemblies. One terminal of each blowout is connected tothe stationary contact assembly.

Fig. 1 - Type 456 AC Air-Break Contactor

INTRODUCTIONThe Type 456 5KV AC air-break contactor is designed

primarily for general alternating current motor startingapplications. It is particularly suited for applications re-quiring frequent starting, reversing, plugging or dynamicbraking.

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CONTACTOR RATINGS

Maximum HorsepowerKVAEnclosedContinuous

AmpereRating 8 Hr.

Basis

4000-5000 Volts2200-2500 VoltsInterruptingCapacity at

No.of Synchronous SynchronousImpulse

LevelImpulse

Level( BIL)

Poles InductionInduction2200- 4000-5000V 1.0pf -8pf I.Opf .8pf(BIL)2500V

50.000 50,0003603 1750 1500 60KV1500 3000 2500 2500 60KV

Auxiliary Contacts: Each contactor is equipped with 2 N.O. and 3 N.C. extra auxiliary contacts rated 600V, 10A (NEMA ClassA600). A third (3rd) N.O. is used to energize the contactor's magnet. See Circuit Diagrams page 4.

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RECEIVING, UNLOADINGAND UNPACKING

MOUNTINGThe contactor should be installed in a clean dry heated

place with good ventilation. It should be readily accessiblefor cleaning and inspection and should be carefully set upand leveled on its supporting foundation and secured inplace.

All adjustments have been made at the factory beforeshipping and generally no change is required. See that allcontact surfaces are clean and smooth, and that current-carrying parts are not damaged.

Air break contactors are shipped completely assembled.To unpack, remove the cardboard shipping carton, thenremove the screws holding the contactor to the woodenplatform and lift the contactor from the platform. Refer toFigure 2 for recommended lifting method.

ELECTRICAL CONNECTIONSInspect all insulated wiring to see that no damage has

resulted from installing the contactor. Test the high volt-age wiring for possible grounds or short circuits.

WARNING:Dielectric testing is hazardous, and should beconducted only by trained personnel. Refer to test deviceinstructions for safety precautions.

A high potential test at 2% times the nominal systemvoltage plus 2000 volts applied for one minute betweenphases and from all phases to ground is the preferredmethod. Be sure to disconnect any devices (control powertransformer, etc.) from the circuit which could be dam-aged by the test voltage. If a hi-pot tester is unavailable,then a Megger test at 1000 volts is a suitable secondchoice.

Make sure that all current-carrying parts outside thecontactor have adequate current-carrying capacity andare correctly insulated in accordance with the require-ments of the National Electrical Code (NEC). All electri-cal connections should be made carefully per furnishedwiring diagram. Tighten all lugs to recommended torquevalues. If crimp lugs are supplied, use recommended toolsonly.IMPORTANT:Toobtain correct magneticaction fromblowouts, connect the load wires (motor, furnace, etc.) tothe terminals on the rear of the blow-out coils. (Refer toFigure 3.).

rFig, 2 - Recommended Lifting Methods i- l

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NOTE: If any signs of damage are apparent, file a claimimmediately with the transportation company and notifyyour Siemens-Allis Sales Office. As much identification aspossible should accompany the claim with a description ofthe damage.

STORINGIf the contactor can be set up immediately in its perma-

nent location, it is advisable to do so, even though it maynot be placed in operation for some time. Contactor shouldbestored indoors in a clean dry dust-free heated area wherecondensation cannot occur.

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INSTALLATION1

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GENERALInstallation shall be in accordance with the National

Electrical Code. ANSI, and NFPA 70 Standards. Fig. 3 - Location of Line and Load Terminalswm.fcOS —* r .wggfmts&Li - -

MAINTENANCEOPERATIONThe customer should establish a periodic maintenance

program. The frequency of inspection, periodic cleaningand preventive maintenance schedule will depend upon theoperating conditions, NFPA Publication 7OB "ElectricalEquipment Maintenance" may be used as a guide to estab-lish such a program. The following items should be in-cluded on any comprehensive maintenance check list:

WARNINGCONTACTOR MUST BE DISCONNECTED FROMALL POWER SOURCES BEFORE PERFORMINGANY INSPECTION, MAINTENANCE OR REPAIR.ONLY QUALIFIED PERSONNEL FAMILIARWITH ELECTRICAL EQUIPMENT AND THEHAZARDS INVOLVED SHOULD BE PERMIT-TED TOSERVICETHISEQUIPMENT\

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PRE-ENERGIZATION CHECK4

WARNING:Perform the following checks before energiz-ing the high voltage circuit:1. Be sure all arc chutes are correctly installed and both

phase barriers are in place.2. Operate the contactor by hand to be sure that all parts

move freely. If the contactor has been stored for sometime, clean any excessive amounts of dust and dirt thatmay have accumulated.

3. Connect only control power and operate the contactorelectrically several times. At 85 to 110% of rated con-trol voltage (see operating data), the contactor shouldpick-up and seal cleanly with no pumping or chatter-ing.

Thecontactor may now be placed in service by connectingmain incoming cables.The contactor must be appropriatelyguarded or isolated before energizing the high voltage cir-cuit. Operating characteristics of contactors which are in-stalled in SpaceMaker-II carriages are described in sepa-rate instruction book ICD 6031.

ARC CHUTE AND PHASE BARRIERREMOVAL AND RE-INSTALLATIONRefer to Figure 4

To remove an arc chute, lift the back end of the chuteuntil it releases, then lift the entire chute upward, slideforward and out.

To re-install an arc chute, slide in rear of arc chute first,then push front arc runner clip down over front stationarycontact until notches in front of chute fit into matinggrooves in contactor insulator block. Now push rear of arcchute down so that rear arc runner clip engages over rearstationary contact. When properly seated, horizontalgrooves on sides of arc chute should line up with top ofblow-out plates.

The two phase barriers may be removed by liftingstraight up, then sliding forward and out. To re-install,reverse thisprocedure makingsure that notches in bai* iersface to the rear (load) side of the contactor.

WARNING: DO NOT ENERGIZE CONTACTOR UN-LESS ARC CHUTES AND PHASE BARRIERS ARE IN-STALLED.

OPERATING DATA125 VottDC Supply

230 vonAC Supply

115 Volt 250 VoltDC SupplyAC Supply

Rated control voltagePick-up voltageDrop-out voltagef'ick-up time

(to contact touch)Fast drop-out time(to contact break)

Normal drop-out time(to contact break)

Normal inrush currentMaximum inrush currentNormal seafcng currentMaximum sealing current

115 volts80 volts50 volts13cycles

230 volts150 volts

90 volts12-13 cycles

250 volts160 volts80 volts14 cycles

125 volts85 volts50 volts

13-14 cycles

4-5 cycles 4-5 cycles4-5 cycles 4-5 cycles

25-35 cycles25-35 cycles

5.0a. 3.5a. 7.0a.10.Qa.13.0a. 9.0a.4.5a.6.5a.

0.13a0 15a

0.26a.

0.30a.0.4a.0.2a0.5a.0.25a.

*Drop-out timesshown in above table are not total clearingtimes. Contactor clearing time is equal to drop-out timeplus arcing time. Arcing times vary depending on voltageand current being interrupted.

CONTROL CIRCUIT DIAGRAMSACSU**.V DCSUPH.V

?<7 TlMft

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LONG WIPE

115 OR 230 VOLTAC SUPPLY

MR - Master Control Relay Contact (remote from con-tactor), contact rating designation to be NEMAA600.

* MR Contact between terminals R and S on AC oper-ated contactor is used to achieve fast drop-out timeshown in above table. For normal drop-out time, con-nect a jumper wire between R and S.

** Panel mounted resistor required only on two-polecontactors

125 OR 250 VOLTDC SUPPLY

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Fig. 4 •Arc Chute and Phase8arrier Installation

2.‘ Using a doth or by light sanding, remove any additionalloose residue (carbon, etc. ) from the flash plates. Payparticular attention to the areas which have verticalgrooves on the ceramic surface. Do not use abrasiveswhich might embed conducting particles in the ceramic(emery cloth, wire brush, etc.).

MAIN CONTACTINSPECTION AND REPLACEMENTAll main contacts are made from a material specially

suited for making and breaking high electrical currentswhile resisting welding and erosion due to arcing. Thecontacts are brazed to a copper alloy base material whichserves tosupport them, carry electrical current and conductheat away. This base material is subject to erosion andwelding if exposed to arcing; therefore contacts must bereplaced when the contact material is worn nearly to thepoint of exposing the base material.As a guide, the contactsshould be replaced when approximately 3/32 inch of contactmaterial has been eroded away.

CAUTION:Contacts must be replaced before any part ofone contact makes contact with the base material of itsmating contact.

The interval between inspections will vary with the na-ture of the load being switched. It is recommended that thecontacts be i nspected after thefirst 1,000 operations. If onlyminor pitting is observed, then the inspection interval canbe increased. Evidence of heavy pitting and erosion of con-tact material means the contacts should be checked morefrequently todetermineif thewear allowance of3/32 inch isbeing approached.Refer to Figure 9

When contacts require replacement, replace contacts (3)and (35) and springs (32) on all three phases at the sametime. To gain access to all contacts, remove two phasebarriers and all three arc chutes (14). Then swing backhinged blowout coil assemblies. All main contacts are nowaccessible for replacement.

Remove hex lock nuts (80) allowing cap screws (74) to slipout of pushrod (28) Movable contact (35) is now accessiblefor replacement.

First remove movable contact assembly. Remove hexhead nut with lockwasher (85) (84). Stationary contact (3)may now be removed for replacement.

In addition to periodic cleaning, the arc chutes should beinspected for any obvious physical damage such as crackedor missing ceramic pieces. Small chips or slight cracks inthe ceramic should not cause concern as long as no largepieces are missing or are in danger of falling out of theassembly. If any components require replacement, thecomplete arc chute assembly must be replaced.CAUTION:When replacing arc chutes, refer to importantordering information at the end of this manual.

After prolonged periods of operation at medium-to-heavycurrents or after the contactor has been required to inter-rupt at or near its full 50MVA rating, heavy electricallyconductive deposits may accumulate on the flash plateswhich would interfere with proper contactor operation. Inthe event of this, it is recommended that a dielectric orMegger test be performed as follows to verify dielectricstrength of the flash plate sufaces. If a Megger is used, therecommended test voltage is 1000 volts.WARNING: Dielectric test voltages are hazardous. Referto test device instructions for safety precautions.

1. Clip Megger or dielectric tester leads onto the flashplates at the points shown in Figure 6 using alligatorclips or the equivalent.

2. The area between the clips should withstand 9KVAC(13KV DC) for one minute or should indicate a resis-tance of at least 100 Megohms. Be sure to test both leftand right sides of the arc chute. If either side fails tomeet the dielectric requirement, then disassembly andcleaning is necessary before placing the arc chute backinto service. If one arc chute fails the test, then disas-sembly and cleaning of all three arc chutes is recom-mended.

PERIODIC CLEANINGAccumulation of dust and foreign material such as coal

dust, cement dust or lamp black must be blown off thecontactor, all surfaces must be wiped clean at regular in-tervals. Dust can collect moisture, causing voltage break-down.

MAGNET COIL REPLACEMENTRefer to Figure 9

Remove wire connections from coil. Loosen hex headmachine screw (89). Slide magnet assembly from the baseoftheyoke(16). Machine screw (89) along with magnet core(17) can then be lifted from coil along with washers (18) (19)(20) (21) (94). Replace coil and reassemble following thereverse procedure.AUXILIARY CONTACT ADJUSTMENTRefer to Figure 9

Tighten auxiliary drive link (39) to coupling angle (46)

just enough to remove excessive free play. Do not over-tighten.

ARC CHUTE INSPECTION AND MAINTENANCEThe arc chutes should be inspected as part of routine

maintenance each time the contacts are inspected. In ser-vice, the arc chute ceramic will become discolored slightlydue to normal arcing as the contactor operates. Dust anddirt will also tend to accumulate after a period of time. Thefollowing procedure should be used to clean the arc chutesafter they have been removed from the contactor1. Blow out dust and dirt by directing dry compressed air

from the bottom of the arc chute up through the spacesbetween the ceramic arcsplitters.The air should also bedirected over the surfaces of the ceramic flash plateslocated in the lower portion of the chute (refer to Figure5).

RECOMMENDED TORQUE VALUES

When making bolted assemblies, the following consider-ation should be generally followed.The tightening torquesare determined by the size of hardware used.1. Metal-to-Metal — Apply standard tightening torque as

listed:

Torque (In.-Lb.)14- 2020- 3040- 60

168-228 •

240-360480-600

2. Metal-to-Insert Molded in Compound Part — Apply ap-proximately 2/3 of standard tightening torque.

3. Compound-to-Insert Molded in Compound Part — Applyapproximately 1/2 of standard tightening torque.

4. Compound-to-Compound — Apply approximately 1/2 ofstandard tightening torque.

Thread Size8-32

10-321/4-20

5/16-183/8-161/2-13

DISASSEMBLY AND CLEANING OF ARC CHUTES

CAUTION: Arc chute disassembly should be performedonly if thedielectric test described in these instructions wasnot passed.

CERAMIC BARRIERDisassembly Procedure (Refer to Figure 7)

1. Lay the arc chute on its side.2. Remove the hardware which attaches the two arc chute

halves at four locations marked (1) in the figure.3. Loosen, but do not remove, the four arc runner attach-

ment screws marked (2).4. Carefully lift off one of the arc chute halves to expose the

ceramic barrier stack and the arc runner and clip as-semblies. Refer to Figure 8.

5. Remove the barrier stack and the arc runners.6. Clean the ceramic flash plates on the bottom of the arc

chute halves by dry nonconductive sandblasting. Aftersandblasting, all of the dark colored deposits should beremoved and the ceramic surfaces should appear white.

7. Wipe off the arc chute halves with a dry cloth and reas-semble the arc chute by reversing the disassembly pro-cedure.The ceramic barrier stack can be installed eitherway but the "V” notches in the splitter plates must betoward the bottom.

8. Repeat the dielectric test to ensure that dielectricstrength has been restored to the flash plate surfaces, inwhich case the arc chutes can now be returned to ser-vice.It is recommended that disassembly and sandblasting of

the arc chute be done no more than three (3) times duringthe service life of any arcchute.After this point, other partsof the arc chute may have become contaminated to theextent that performance is degraded and the entire arcchute should be replaced.

TROUBLE SHOOTINGIn the unlikely event that operating problems are en-

countered, use the following trouble-shooting chart to iso-late the cause of the malfunction and find the remedy. If thecorrective action given in the chart fails to correct thedifficulty, consult your field sales representative.

If it is necessary to write to Siemens-Allis relative to theequipment, the following information should be given:1. Manufacturer’s order number, if available.2. Nameplate data on contactor.3. Duty cycle and any details of operation.4. Length of time in service and approximate total number

of operations.5. Voltage, current and frequency.6. Description of problem.7. Any other pertinent information.

cCAUTION: Refer to "IMPORTANT INFORMATIONWHEN REPLACING ARC CHUTES” at the end of thismanual.

TROUBLE SHOOTING CHARTWARNING

REMOVE ALL POWER TO CONTACTOR PRIOR TO MAKING THESE CHECKS EXCEPT WHERECONTROL POWER IS REQUIRED AND EXERCISE CAUTION AT ALL TIMES.

REMEDYCAUSETROUBLEReduce current load.Overload.CONTACTS

Clean contact surfaces.Replace contact springsif weak and/or replacecontacts if wear allow-ance of 3/32” per con-tact is used up.

Insufficient contactpressure.

Overheatingof contacts.

Check and tighten powerconnections.

Loose connection.

Poor contact in controlcircuit.

Check all connections incontrol circuit for tight-ness.

Contact chatteror pumping.

The N O? contact of "M”in parallel with the N.C.L.W. contact must closebefore L.W. contactopens. If this sequence isnot followed check forworn contacts and physi-cal damage of pole as-sembly (47 and 48); alsocheck leaf spring drive(41) for mechanicaldamage.

Improper functioningof long wipe contact(between T & S in con-tactor coil circuit).

Fluttering control relaysuch as pressure or tem-perature switch.

Properly adjust switch orreplace.

Measure control voltage.Voltage must be at least85% of rated value shownin OPERATING DATA.

Abnormally low controlvoltage.

Check continuity of coiland replace if defective.

Open coil

Short contactlife.

Bounce on closing. Check operating voltage.Should not exceed ratedvoltage by more than 10%.

Refer to Arc Chute in-stallation instructions.

Improper seatingof arc runners.Low voltage; magnetnot sealing.

Measure control volt-age. Voltage mustbe at least 85% ofrated value shown inOPERATING DATA.

•- -v.

Fluttering controlrelay such as pres-sure or temperatureswitch.

Properly adjust switchor replace.

•V-’Check application.Excessive jogging

TROUBLE SHOOTING CHART (CONT’D)

WARNINGREMOVE ALL POWER TO CONTACTOR PRIOR TO MAKING THESE CHECKS EXCEPT WHERECONTROL POWER IS REQUIRED AND EXERCISE CAUTION AT ALL TIMES.

CAUSE REMEDYTROUBLE

Short Contact Foreign materialsin operating or con-tact mechanisms.

RemoveLife

Weldingof contacts.

Inadequate contactpressure.

Replace contacts ifwear allowance is ex-ceeded. Replace con-tact pressure springs.

Properly adjust switchor replace.

Fluttering controlrelay such as pres-sure or temperatureswitch.

Measure voltage to de-termine if abnormallylow dips in voltageoccur, particularlyduring motor start-up.

Low control voltage,contactor droppingpartially open.

Check for mechanicalbinding and adjust.

Mechanical interference.

Adjust mechanical in-terlock. Refer 4 »

SpaceMaker-11 instruc-tion book ICD 6031.

Misadjustment of me-chanical interlock forcontactors installed inSpaceMaker controller.

Check for mechanical bind-ing of contactor.

COIL/RECTIFIER Failure of magnetarmature to close.

Properly adjust switchor replace.

Bumed-Outcoil or rectifier

Fluttering controlrelay such as pres-sure or temperatureswitch.

Adjust. Refer toSpaceMaker-II instruc-tions ICD 6031.

Mechanical inter-lock interference.

Check leaf spring drive(41) and pole assembly(48) for mechanical da-mage.

Failure of long wipecontact to open.

Measure voltage. Volt-age should not exceedrated voltage by morethan 10%

Control voltage toohigh.

High ambient tempera-ture.

Ambient temperature out-side contactor enclosureshould not exceed 40°C.

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PARTS LISTTYPE 456 AIR-BREAK CONTACTOR

Part NumberBasic Contactor with Wheels

ControlVoltage

Numberof Poles

115 VAC 3 25-125-248-503115 VAC 25-125-248-5042230 VAC 14-514-449-5013230 VAC 14-514-449-5062230 VAC 3 14-519-296-501 t

t Spring closed Dynamic Braking Contactor, furnished less wheels.

REFER TO FIGURE 9

PARTS LIST - BASIC TYPE 456 CONTACTOR - 2 OR 3 POLES

QTYQTY PART NUMBERITEM DESCRIPTION 2 - POLE3 - POLE14-422-858-00114-141-684-00114-147-051-50114-227-877-50114-317-577-50125-120-957-00225-205-568-80114-230-679-50114-422-046-00714-142-286-50114-142-286-50214-133-782-00114-231-654-00114-133-795-00125-131-017-50214-170-322-00114-319-712-50114-142-161-00114-129-241-02314-145-664-00114-179-558-00114-171-157-01314-133-780-00214-145-322-00114-145-712-00114-230-539-00114-145-321-00114-321-927-00214-227-879-00214-170-557-50114-145-379-00214-145-379-00114-145-668-00114-142-157-00114-141-685-00114-227-873-50114-321-928-00214-123-887-00414-147-033-00114-170-324-001

11FrameStationary ContactStationary Contact InsertStationary Contact Support-FrontStationary Contact Support-RearSupport BarBlowout CoilBlowout CoreFishpaper InsulatorBlQwout Plate - R.H.Blowout Plate - L.H.Blowout Coil WasherArc Chute SupportPhase BarrierArc Chute Assembly*StopMagnet Yoke AssemblyMagnet CoreNeoprene WasherPlastic WasherSteel WasherStainless Steel WasherShim .015 thickStationary Pivot SeatSpringPivot BarMovable Pivot SeatMovable Contact CarrierContact Push RodBearing Pin AssemblyBarrel NutBearing PinContact Pressure SpringSpring SaddleMovable Contact GuideMovable Contact AssemblyContact ArmBearingAuxiliary Contact Actuator ArmAuxiliary Contact Drive Link

16 426 43

1141 15 236

237238

6 48A3 293 2106 411 23122133 214 1115 1116 1117 1118 1119 1120

121 12222 1123 2224 1125126 11127 2328 1129

1301 131 2332 2333 2334

2335 11362 237

11381139

* - Refer to "IMPORTANT INFORMATION WHEN REPLACING ARC CHUTES”, Page 12.

QTY QTY PART NUMBERDESCRIPTIONITEM 3-POLE 2-POLEArmatureLeaf Spring DriveArmature ShaftBearing HousingOilite BearingAuxiliary Contact PanelAuxiliary Contact CouplingAuxiliary N.O.-N.C. Contact AssemblyN.C. Contact AssemblyTerminal BlockWheel AssemblyWheel Shaft#6*32 x .37 Lg. Rd. Hd. Mach. Scr.#6-32 Hex Nut#6 Flatwasher#6 Lockwasher#6 x .25 Rd. Hd. Drive Scr.#8-32 x .62 Lg. Rd. Hd. Mach. Scr.#8-32 x .75 Lg. Rd. Hd. Mach. Scr.#8 Flatwasher#8 Lockwasher#8-32 Elastic Stop Nut#10-32 x .50 Lg. Hex. Hd. Mach. Scr.

with Lockwasher#10*32 x .75 Lg. Hex. Hd. Mach. Scr.#10-32 x .50 Lg. Rd. Hd. Mach. Scr.#10 x .75 Lg. Rd. Hd. S/T Scr.#10 x 1.0 Lg. Rd. Hd. S/T Scr.#10-32 x 2.75 Lg. Fil. Hd. Scr.#10 Flatwasher#10 Flatwasher#10 Lockwasher#10-32 Hex Nut#10-24 Elastic Stop Nut.25 - 20 x .87 Lg. Hex. Hd. Cap Scr..25-20 x 2.25 Lg. Hex. Hd. Cap Scr..25-20 x 3.75 Lg. Hex. Hd. Cap Scr..25 Flatwasher.25 Lockwasher.25-20 Hex Nut.25-20 Hex Elastic Stop Nut.25-20 Hex Lock Nut.25 x .37 Shoulder Hex SocketHd. Screw #10-24 x .37 Lg..25 ID x .562 OD x .047 ThickFlatwasher.312-18 x 1.75 Lg. Hex. Hd. Cap Scr..312 Lockwasher.312-18 Hex Nut.375-16 x 1.25 Lg. Hex. Hd. Cap Scr..375-16 x 1.5 Lg. Hex. Hd. Cap Scr..375-16 x 1.75 Lg. Hex Hd. Cap Scr..375-16 x 5.5 Lg. Hex. Hd. Cap Scr..375-16 x 1.0 Lg. Flat Hex SocketHd. Mach. Screw.375-16 x 1.25 Lg. Hex SocketHd. Mach. Screw.375*16 Hex Nut.375 Flatwasher.375 Lockwasher.375 Lockwasher CTSK tooth.50-13 x 1.25 Lg. Hex. Hd. Cap Scr..50-13 Y 1 50 I .cr HOY Hrl Can Scr.

14-145-381-00114-145-440-00114-231*651*00114-231-653-00125-131-385-00114-230-680-00114-145*432-00114-226*593-00914*226-593-00200-857-035-04114-147-042-50114*147-041-00100-615-471*12200-631-109-10600-651-027-05000-651-017-01800-615-623-12000-615-471-17600-615-471-17800-651-027*07200*651-017-02000-633*125-10800-611-445-218

140 141 1 142 1 143 1 1

244 2145 1

146 13 347

48 1 1149 14 450

451 4252253254255

2 2564457158 16659

60 4 461 1 1

2262

00-611-445-22200-615*521-21800*615-581-22200-615-581-22500-615-245*23900-651-027-08700-615-027-09300-655-017-02200-631-123*21000-633-057-11000-611-289-37700-611-289-38815-171-236-00100-651-007-14600-655-017-02600*631-059-10400-633-067*10400-633-221-90400-617-349-248

3 3633364

2 265226616733685569

3 4705371

1 1722 2736 4746 47512 87614 107712 878

46794680

1 181

00-651-007-1232282

00-611*289-42800-655-017-03000-631-059-10500-611-315-46800-611-315-47000-611-315-47200-611-315-49200-615-087-468

3 2836984

6 4857 7862 2873 288

11891901

i

2 2 00-615*114-46891*1

8 00-631-059-10600-651-007-23000-655-017-03200-655-077-20000-611-315-54600-611-315-548

6926 493

14 13941952 2962 2Q7

QTY QTYDESCRIPTIONITEM PART NUMBER3-POLE 2-POLE

.50-13 x 1.75 Lg. Hex. Hd. Cap Scr.

.50-13 x 2.25 Lg. Hex. Hd. Cap Scr..50-13 x 2.50 Lg. Hex. Hd. Cap Scr.

.50 Flatwasher

.50 Lockwasher

.50-13 Hex Nut

.50-13 Hex Nut

.625 Flatwasher

.75 Brass Washer .062 Thick'IT WasherMica WasherCentering Washer

98 3 00-611-315-55000-611-315-55400-611-315-55600-651-007-28500-655-017-03600-631-003-10800-631-059-10800-651-027-35700-651-027-40000-659-056-06214-219-555-01114-105-442-001

• 299 5 4

100 3 2101 6 4

' 19102 17103 6 4104 4 4105 4 4106 2 2107 4 4108 2109 2

ADDITIONAL COMPONENTS - 115 VAC CONTACTORSQTY QTYDESCRIPTIONITEM PART NUMBER3-POLE 2-POLE

Magnet CoilRectifier with InternalSurge SuppressionLeaf Return SpringResistor 4 ohm 25 Watt

110 1 14-183-180-50125-127-039-001

1111 1 1

112 1 1 25-131-184-00125-125-247-005113 1

ADDITIONAL COMPONENTS — 230 VAC CONTACTORS114 Magnet Coil

Rectifier with InternalSurge SuppressionResistor 20 ohm 25 Watt

14-183-122-50125-127-144-001

1 1115 1 1

116 15-873-139-0081

SUBASSEMBLIESThe following Factory-assembled groups of componentsare available as sub-assemblies:

QTY QTYITEM DESCRIPTION PART NUMBER3-POLE 2-POLEBlowout Pole Sub-AssemblyConsisting of Items 7-12, 75-79.Stationary Contact Sub-AssemblyConsisting of Items 2, 3, 84, 85.Movable Contact Sub-Assembly (3-Pole)Consisting of Items 26-37,62, 74, 80, 83, 84, 86, 90, 92,92, 94, 95, 106.Movable Contact Sub-Assembly (2-pole) Consisting of Items 26-29, 31-37,62, 74, 80, 83, 84, 86, 92, 94, 106.Pre-Wired Auxiliary Contact PanelSub-Assembly for 115 VAC Contactor.Consisting of Items 45-49,57, 59, 60, 65, 66, 69, 111, 112.Pre-Wired Auxiliary Contact PanelSub-Assembly For 115 VAC Contactor.Consisting of Items 120, 52-55,67, 70, 71, 108, 109, 113.Pre-Wired Auxiliary Contact PanelSub-Assembly for 230 VAC Contactor.Consisting of Items 45-49,57, 59, 60, 65, 66, 69, 115.

117 3 2 14-422-046-501

118 25-127-634-5026 4

119A 14-422-045-5011

14-422-045-505119B 1

120A 25-125-247-5101

120 B 1 25-125-247-511

14-230-682-5011120 C

QTY QTY PART NUMBERDESCRIPTIONITEM 2-POLE3-POLEPre-Wired Auxiliary Contact PanelSub-Assembly for 230 VAC Contactor.Consisting of Items 120C, 52-55,

67, 70, 71, 108, 109, 116.Magnet Yoke and AuxiliaryContact Panel Sub-Assemblyfor 115 VAC Contactor, Consistingof Items 120A, 16-23, 38-44,

56, 58, 59, 61, 63, 64, 68, 70-73,

77, 81, 82, 89, 94, 96, 99', 102, 110.

Magnet Yoke and AuxiliaryContact Panel Sub-AssemblyFor 115 VAC Contactor, Consistingof Items 120B, 16-23, 38-44 ,56, 58, 59, 61, 63, 64, 68, 70-73,77, 81, 82, 89, 94, 96, 99, 102, 110.

Magnet Yoke and AuxiliaryContact Panel Sub-Assemblyfor 230 VAC Contactor, Consistingof Items 120C, 16-23, 38 4,56, 58, 59, 61, 63, 64, 68, 70-73,

77, 81, 82, 89, 94, 96, 99, 102, 110.Magnet Yoke and AuxiliaryContact Panel Sub-Assemblyfor 230 VAC Contactor, Consistingof Items 120D, 16-23, 38-44,56, 58, 59, 61, 63, 64, 68, 70-73,77, 81, 82, 89, 94, 96, 99, 102, 110.

25-302-616-501120D 1

25-125-247-508121A 1

25-125-247-509121B 1

25-127-634-5031121C

25-127-634-5061121D

> • © MAIN CONTACT REPl " CEMENT KIT - Kit includes complete set of main stationary and movable contacts plus contact pressprings for a three-polo contacts. Order part number 14-172-548-801.

—IMPORTANT INFORMATION WHEN REPLACING ARC CHUTES

e

The arc chute for type 456 contactors manufactured prior to January,1980 and pictured at upper left is obsolete and no longer available as areplacement part.

This arc chute has been superseded with a new design which issmaller and lighter. The older design arc chute was comprised of twomolded light gray halves with interleaved arc splitter fins.The newerdesign, shown at lower left, is made of two dark gray plastic halveswhich house an integral ceramic arc splitter assembly.

The two arc chute designs are interchangeable, with one very im-portant exception - THEY MUST NOT BE MIXED IN THE SAMECONTACTOR. If arc chutes of different types are mixed, then inter-rupting duty between individual poles will be unequal causing sub-stantial reduction in the interrupting capacity of the contactor. Whencontactors employing the obsolete arc chute design require replace-ment of one or more arc chutes, a complete set of three of the newerceramic-type arc chutes must be ordered and installed. Similar in-structions apply for two-pole contactors, except only two arc chutesarerequired.

I l

OBSOLETE ARCCHUTE(14-422-044-501)

I

1

REPLACEMENTARP. PHUTFlfa

to facilitate emergency stopping. Since this contactor issupplied without arc chutes or magnetic blowouts, it mustnever be applied in a circuit requiring power interruption.

TYPE 456-D DYNAMIC BRAKING CONTACTOR

The Type456-D Dynamic Braking contactor is similar inconstruction to the normally-open Type 456 air-break de-sign.The main difference is in the magnetic actuator usedto open and close the main contacts, and in the fact that theentire arc interrupter assembly is omitted. Two pressuresprings located below the movable contact carrier are usedto hold the main contacts in the normally-closed position.Energizing the magnet coil opens the contacts againstspring pressure, and the contacts will remain open untilcontrol power is removed. '

Dynamic braking contactors are used to connect brakingresistors across the stator winding of synchronous motors

WARNINGDO NOT USE DYNAMIC BRAKE CONTACTORIN CIRCUITS WHERE POWER INTERRUP-TION IS REQUIRED,

The parts list given below for the Type 456-D contactorincludes only components which are unique to the spring-closed design. To find parts not listed below, refer to the3-pole air break contactor parts list and exploded view.

REFER TO FIGURE 10TYPE 456-D CONTACTOR PARTS LIST - 230VAC OPERATIONITEM DESCRIPTION QTY PART NUMBER

Frame1 14-423-749-00112 Magnet Yoke and Auxiliary

Contact Sub-Assembly1 14-322-014-504

Movable Contact CarrierSub-Assembly

3 1 14-422-045-502

4 Terminal Support 3 14-234-917-501Spring5 2 14-145-439-001

6 Armature 14-234-916-0011Link 14-173-978-0011

8 Phase Barrier 2 14-145-665-00114-173-987-0019 Spring Guide 2

10 RectfierMagnet Coil

Included inSub-Assembly

) Item 2i 25-127-144-001

14-183-181-5011

11 1

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F’^URE 9 - TYPE 456 CONTACTOR EXPLODED VIEW;;1

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Custom Control Divis* Siemens-Allis, Inc.

Box 89Wichita Falls, Texas

SIEMENSsoundpractloaa m application,installation.operationandmaintanancaof tha