Cutler Hammer
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 CUTLER HAMMER CH120 20 AMP 1 POLE PLUG IN BREAKER $9.25 Time Remaining: 9d 11h 36m Buy It Now for only: $9.25 |
 lot of 5 cutler hammer ch115af arc fault breaker $62.77 (4 Bids) Time Remaining: 1d 1h 29m |
 New out of box Eaton Cutler Hammer Type BR Combo Arc Fault BRCAF115 $23.00 Time Remaining: 24d 21h 49m Buy It Now for only: $23.00 |
 XO BREAKER 15 Amp Single Pole Square D Cutler Hammer $16.95 Time Remaining: 1d 19h 46m Buy It Now for only: $16.95 |
 XO BREAKER 20 Amp Single Pole Square D Cutler Hammer 1 2 $39.95 Time Remaining: 7d 15h 26m Buy It Now for only: $39.95 |
 CUTLER HAMMER CH115 15 AMP 1 POLE PLUG IN BREAKER $9.25 Time Remaining: 17d 21h 28m Buy It Now for only: $9.25 |
 cutler hammer arc fault breaker ch115caf $12.50 (2 Bids) Time Remaining: 1d 1h 31m |
 Cutler Hammer CH2100 2 Pole 100 Amp Circuit Breaker $39.99 Time Remaining: 29d 8h 14m Buy It Now for only: $39.99 |
 CUTLER HAMMER CH115 15 AMP 1 POLE PLUG IN BREAKER Chipped $6.00 Time Remaining: 19d 4h 12m Buy It Now for only: $6.00 |
 1pc Eaton Cutler Hammer BR115CAF AFCI Circuit Breaker $36.00 Time Remaining: 27d 19h 23m Buy It Now for only: $36.00 |
 XO BREAKER 15 Amp Single Pole Square D Cutler Hammer 1 2 $15.00 Time Remaining: 7d 15h 26m Buy It Now for only: $15.00 |
 Cutler Hammer CH GFCI CH115GFCI 1 pole 15 amp GFCI Circuit Breaker $25.00 Time Remaining: 9d 5h 55m Buy It Now for only: $25.00 |
 XO BREAKER 20 Amp 2 Pole Square D Cutler Hammer 1THIN $29.95 (1 Bid) Time Remaining: 7h |
 SQUARE D CUTLER HAMMER XO240 2 POLE 40 AMP CIRCUIT BREAKER 1 1 2 $35.00 Time Remaining: 8d 8h 7m Buy It Now for only: $35.00 |
 New Cutler Hammer Breaker BR320 20A 3 Pole $24.99 Time Remaining: 26d 17h 17m Buy It Now for only: $24.99 |
 XO BREAKER 20 Amp Single Pole Square D Cutler Hammer $39.95 Time Remaining: 17d 2h 45m Buy It Now for only: $39.95 |
 XO BREAKER 20 Amp 2 Pole Square D Cutler Hammer 1THIN $59.99 Time Remaining: 1d 4h 40m Buy It Now for only: $59.99 |
 cutler hammer br br2020 twin 20 20 amp circuit breaker $10.99 Time Remaining: 8d 19h 32m Buy It Now for only: $10.99 |
 Lot of 4 Eaton Cutler Hammer Series Type BR Combo Arc Fault BRCAF115 $49.95 (1 Bid) Time Remaining: 3d 21h 59m |
 XO BREAKER 15 Amp Single Pole Square D Cutler Hammer $12.95 Time Remaining: 8d 6h 20m Buy It Now for only: $12.95 |
 Cutler Hammer BQ230 240 BRD 30A 40A 4 Pole BQ230240R $18.99 Time Remaining: 20d 16h 58m Buy It Now for only: $18.99 |
 Cutler Hammer circuit breaker DK2400W 400 amp dk 2 pole $299.99 Time Remaining: 9d 15h 33m Buy It Now for only: $299.99 |
 Cutler Hammer CH250 50 amp OR CH260 60 amp each pick one 220 120 240 volt $8.00 Time Remaining: 8d 5h 49m Buy It Now for only: $8.00 |
 Cutler Hammer 30A 2 Pole Breaker BR230 C230 $7.00 Time Remaining: 8d 19h 13m Buy It Now for only: $7.00 |
 CUTLER HAMMER MAIN BREAKER 200A CH $49.99 Time Remaining: 1d 23h 7m Buy It Now for only: $65.99 |
 CUTLER HAMMER EATON CHSPT2MICRO TYPE2 SPD WHOLE HOUSE BEST SURGE PROTECTOR NEW $85.99 Time Remaining: 25d 18h 40m Buy It Now for only: $85.99 |
 XO 15 Amp 1 Pole Breaker Square D Cutler Hammer $5.00 Time Remaining: 12d 23h 14m Buy It Now for only: $5.00 |
 Cutler Hammer BREQS125 $5.59 Time Remaining: 25d 3h 59m Buy It Now for only: $5.59 |
 4 Cutler HAMMER 20 Amp Circuit Breakers Single Pole $14.99 Time Remaining: 22d 21h 5m Buy It Now for only: $14.99 |
 CH RAIN PROOF ENCLOSHURE NEW cutler hammer $29.00 Time Remaining: 11d 14h 4m Buy It Now for only: $29.00 |
 Cutler Hammer 1MCB600R 600 Amp LD35K Main breaker 1MM412RRLB 800Amp meter panels $900.00 Time Remaining: 2d 6h 40m Buy It Now for only: $1,000.00 |
 Cutler Hammer Circuit Breaker 1 pole 15 Amp GB1015 $6.99 Time Remaining: 25d 18h 37m Buy It Now for only: $6.99 |
 COMBO PACK CUTLER HAMMER BR 30A 40A 2 pole breaker FREE SHIPPING CANADA $29.99 Time Remaining: 18d 1h 49m Buy It Now for only: $29.99 |
 CUTLER HAMMER BR115CAF 15 AMP 1 POLE PLUG IN BREAKER FREE SHIPPING USA $23.88 Time Remaining: 15d 58m Buy It Now for only: $23.88 |
 TESTED CUTLER HAMMER BR350 50 AMP 3 POLE BREAKER 350 COMPLETE CLEAN GUARANTEED $28.94 Time Remaining: 20d 2h 28m Buy It Now for only: $28.94 |
 SQUARE D CUTLER HAMMER XO215 2 POLE 15 AMP THIN CIRCUIT BREAKER 1 $36.00 Time Remaining: 8d 7h 37m Buy It Now for only: $36.00 |
 Cutler Hammer BR 250 C250 2 Pole 50 A Circuit Breaker $5.00 Time Remaining: 1d 1h 37m Buy It Now for only: $9.00 |
 Cutler Hammer CHQ215 2 ph 15 amps 120 240 v Thermal Magnetic Breaker $23.99 Time Remaining: 21d 22h 38m Buy It Now for only: $23.99 |
 CUTLER HAMMER BRSURGE PLUG ON TYPE BR SURGE PROTECTOR 120 240V 2 POLE FITS BR $60.99 Time Remaining: 6d 18h 19m Buy It Now for only: $60.99 |
 SQUARE D CUTLER HAMMER XO240 2 POLE 40 AMP CIRCUIT BREAKER CHIPPED L CORNER $30.00 Time Remaining: 8d 7h 37m Buy It Now for only: $30.00 |
 1515 AMP 120 VOLT CUTLER HAMMER TANDEM DUAL CIRCUIT BREAKER BR $9.99 Time Remaining: 14d 14h 30m Buy It Now for only: $9.99 |
 Cutler Hammer CHQ250 QO250 2 pole 50 amp Breaker $9.99 Time Remaining: 16d 21h 23m Buy It Now for only: $9.99 |
 CUTLER HAMMER 100AMAIN BREAKER CH2100 2 POLE $19.99 Time Remaining: 1d 23h 7m |
 CUTLER HAMMER 90A CIRCUIT BREAKER BR290 NEW WIRE BREAKER BOX $19.99 Time Remaining: 23d 21h 9m Buy It Now for only: $19.99 |
 Cutler Hammer CHQ240 2 ph 40 amps 120 240 v Thermal Magnetic Breaker $27.99 Time Remaining: 21d 23h 3m Buy It Now for only: $27.99 |
 Cutler Hammer CHQ260 2 ph 60 amps 120 240 v Thermal Magnetic Breaker $29.99 Time Remaining: 21d 23h 1m Buy It Now for only: $29.99 |
 Cutler Hammer CIRCUIT BREAKER BOLT ON 1 pole 15 amp QBH15 CEB Sylvania Commander $28.51 Time Remaining: 3d 3h 46m Buy It Now for only: $28.51 |
 CUTLER HAMMER BW BW2150 2 POLE 240V 150 AMP CIRCUIT BREAKER $65.00 Time Remaining: 29d 21h 16m Buy It Now for only: $65.00 |
 CUTLER HAMMER CH MAIN BREAKER 200A $49.99 Time Remaining: 1d 23h 7m |
 CUTLER HAMMER BQC230250 A3050CT QUAD Circuit Breaker $25.00 Time Remaining: 2d 3h 53m Buy It Now for only: $25.00 |
 CUTLER HAMMER 100 AMP CIRCUIT BREAKER PANEL + ALL BREAKERS CH20M100 $159.00 Time Remaining: 23d 21h 3m Buy It Now for only: $159.00 |
 CUTLER HAMMER CHSPT2MAX SURGETRAP COMPLETE HOME SURGE PROTECTION PANEL WIRE IN $89.99 Time Remaining: 7d 16h 39m Buy It Now for only: $89.99 |
 Cutler Hammer Electrical Panel Generator Transfer switch Complete Cover Kit $225.00 Time Remaining: 21d 31m Buy It Now for only: $225.00 |
 CUTLER HAMMER CH MAIN BREAKER 200A $49.99 Time Remaining: 1d 23h 7m |
 Cutler Hammer BR24L125RP CL1224RB 125 Amp Type 3R Enclosure BR Loadcenter $39.99 Time Remaining: 20d 14h 39m Buy It Now for only: $39.99 |
 70 Amp Cutler Hammer Circuit Breaker Type CH AL CU $8.99 Time Remaining: 2d 17h 36m Buy It Now for only: $8.99 |
 Eaton Cutler Hammer BR2040B200R 200 Amp Outdoor Load Center with Main Breaker $99.95 Time Remaining: 5d 14h 44m Buy It Now for only: $99.95 |
 XO BREAKER 15 Amp Single Pole Square D Cutler Hammer $16.95 Time Remaining: 9d 21h 13m Buy It Now for only: $16.95 |
 Cutler Hammer GFCB120 Ground Fault Circuit Breaker $24.99 Time Remaining: 26d 19m Buy It Now for only: $24.99 |
 LOT OF CUTLER HAMMER BREAKERS $19.99 Time Remaining: 1d 23h 7m |
 Cutler Hammer BR220 2 Pole 20 Amp Breaker $7.99 Time Remaining: 1d 2m Buy It Now for only: $7.99 |
 Cutler Hammer 60 AMP Breaker Box Made with Hard Plastic $48.95 Time Remaining: 20d 18h 27m Buy It Now for only: $48.95 |
 XO BREAKER 30 Amp Double Pole Square D Cutler Hammer $49.99 Time Remaining: 29d 2h 28m Buy It Now for only: $49.99 |
 Cutler Hammer Tandem 15 Amp Breaker BQLT 15 $24.99 Time Remaining: 20d 2h 18m Buy It Now for only: $24.99 |
 XO BREAKER 15 Amp 1 Pole Square D Cutler Hammer breaker $12.00 Time Remaining: 9d 15h 37m Buy It Now for only: $12.00 |
 CUTLER HAMMER CHSPT23PACK COMPLETE SURGE CHSPT2ULTRA CHSPTELE AND CHSPCABLE NEW $169.99 Time Remaining: 2d 15h 9m Buy It Now for only: $199.99 |
 CUTLER HAMMER BREAKER CSR2150 2 POLE 120 240V 150 AMP CSR 25k $60.00 Time Remaining: 11d 22h 16m Buy It Now for only: $60.00 |
 Cutler Hammer 70amp Indoor Main Lug Panel BR24L70SP NIB $11.95 Time Remaining: 21d 20h 11m Buy It Now for only: $11.95 |
 Cutler Hammer BQ250250 Circuit Breaker NEW 2P 50 X 2 56amp 2 pole 120 240 new $49.00 Time Remaining: 25d 20h 12m Buy It Now for only: $49.00 |
 Cutler Hammer QCR2030 $15.00 Time Remaining: 14d 4h 28m Buy It Now for only: $15.00 |
 NEW Eaton Cutler Hammer DNPL 154015 Plug In Duplex Quad Replacement Breaker $33.99 Time Remaining: 9d 3h 22m Buy It Now for only: $33.99 |
 LOT OF 2 CUTLER HAMMER BREAKERSBQ230230 4 POLE 30A $19.99 Time Remaining: 1d 23h 7m |
 Cutler Hammer SPDT 8531K34 Switch $3.99 Time Remaining: 20d 20h 4m Buy It Now for only: $3.99 |
 Cutler Hammer BR3100 Circiut Breaker BRAND NEW $52.99 Time Remaining: 3d 11h 26m Buy It Now for only: $52.99 |
 Cutler Hammer 30A Single Pole Circuit Breaker $5.99 Time Remaining: 14h 24m Buy It Now for only: $5.99 |
 NEW Eaton Cutler Hammer DNPL 151515 Plug In Duplex Quad Replacement Breaker $31.99 Time Remaining: 9d 3h 14m Buy It Now for only: $31.99 |
 XO BREAKER 20 Amp Single Pole Square D Cutler Hammer $39.95 Time Remaining: 9d 21h 17m Buy It Now for only: $39.95 |
 NEW CUTLER HAMMER BR SERIES HOUSE BREAKER PACKAGE INCLUDING 2 ARK FAULT $145.00 Time Remaining: 5d 1h 10m |
 EATON CUTLER HAMMER CSR CSR2150N 2 Pole 150 amp 240v Circuit Breaker $75.00 Time Remaining: 7d 48m Buy It Now for only: $75.00 |
 NEW XO BREAKER 15 Amp 1 Pole Square D Cutler Hammer breaker XO115 $49.99 Time Remaining: 28d 17h 48m Buy It Now for only: $49.99 |
 Cutler Hammer CH2100CS 2 Pole 100 Amp Circuit Breaker $39.99 Time Remaining: 29d 8h 12m Buy It Now for only: $39.99 |
 Case of 5 Cutler Hammer BQC220230 Quad 2P 20 30 Amp 120 240V Circuit Breaker $75.00 Time Remaining: 1d 1h 18m Buy It Now for only: $75.00 |
 XO BREAKER 15 Amp 2 Double Pole Square D Cutler Hammer $12.50 Time Remaining: 25d 18h 42m Buy It Now for only: $12.50 |
 9 Cutler Hammer Used Circuit Breakers 30 Amp 2 Pole 15 Amp Single Pole $14.95 Time Remaining: 4d 23h 35m |
 Westinghouse Cutler Hammer BWH 25K 225 Amp Main Circuit Breaker $275.00 Time Remaining: 19d 19h 21m Buy It Now for only: $275.00 |
 Cutler Hammer 15 Amp Single Pole 120 240 CH 115 $9.99 Time Remaining: 9d 20h 38m Buy It Now for only: $9.99 |
 X0115 Square D or Cutler Hammer XO115 type XO BREAKER 15 Amp Single Pole 1 2 $19.95 Time Remaining: 3d 43m Buy It Now for only: $19.95 |
 CUTLER HAMMER 40 AMP TYPE XO BREAKER E 19B $34.99 Time Remaining: 7d 19h 20m Buy It Now for only: $34.99 |
 CUTLER HAMMER CHSA PLUG ON TYPE CH TYPE2 SURGE PROTECTOR 120 240V 2 POLE FITS CH $65.00 Time Remaining: 1d 3h 17m Buy It Now for only: $65.00 |
 26 Used Circuit Breakers Cutler Hammer Bryant FPE Westinghouse ITE Etc $19.95 Time Remaining: 4d 23h 34m |
 cutler hammer gq gq1020 277 volt 20 amp circuit breaker $6.99 Time Remaining: 25d 18h 37m Buy It Now for only: $6.99 |
 New Cutler Hammer Arc Fault Circuit Breaker BRC120AF $32.99 Time Remaining: 26d 1h 10m Buy It Now for only: $32.99 |
 XO BREAKER 15 Amp 2 slim Pole Square D Cutler Hammer $12.50 Time Remaining: 25d 18h 42m Buy It Now for only: $12.50 |
 New Cutler Hammer Breaker BR380 $49.99 Time Remaining: 26d 1h 10m Buy It Now for only: $49.99 |
 CUTLER HAMMER 60 AMP RANGE FUSES FUSE HOLDER PULL OUT $35.00 Time Remaining: 9d 18h 53m Buy It Now for only: $35.00 |
 Cutler Hammer Panel cover $20.00 Time Remaining: 6d 22h 4m Buy It Now for only: $30.00 |
 Eaton Cutler Hammer CH2L125RP 125A 1PH Outdoor Main Lug $24.95 Time Remaining: 24d 14h 27m Buy It Now for only: $24.95 |
 Cutler Hammer Duplex Quad 15 Amp Breaker BQLT215215 $54.99 Time Remaining: 20d 2h 11m Buy It Now for only: $54.99 |
 Cutler Hammer HFD3100L New In Box $349.00 Time Remaining: 7d 22h 38m Buy It Now for only: $349.00 |
 Cutler Hammer CH120GF CH 120 1P Ground Fault breaker $35.00 Time Remaining: 14d 4h 57m Buy It Now for only: $35.00 |
Cutler Hammer
How a DC Magnetic Motor Control Works
As manufacturing and industrial facilities evolved over the years, so have the ways we power the machinery. By power, I am referring to the controlling or initiating motion to perform a process. The key here is the industrial motors themselves. Whether they're small, medium, or large, motors need to be controlled. They need to be started, stopped, and varied in overall speed for safety and also to properly perform their selected function. A motor rotating at unsafe speeds can be hazardous to personnel and dangerous to the equipment to which they are connected. The motor controller comes into play to do just that. Control of the startup as well as the acceleration to an appropriate speed, then the monitoring of the motor to ensure it is operating within its power rating, and of course the stoppage of the motor. For decades, a magnetic dc motor control was the most efficient way to get the job done. These sometimes complex circuits composed of relays, contactors, timers, and resistors could be found anywhere there was an industrial electric motor. At the time, they were new technology replacing drum controllers which used the human element to control a motor's acceleration. on these controllers, an operator had the responsibility of turning on the motor and bringing it up to its proper speed using a handle attached to a drum of contacts. The faster the operator turned the handle, the faster the motor accelerated. Operating speed for the motor could also be controlled using the handle by stopping at a certain position short of full deflection. Motors could also be reversed using these controls by turning the handle in the opposite direction. Drum controllers relied too much on an operator's gentle touch to be efficient and safe. The dc magnetic controller easily became the accepted method of motor control in its time.
The controlled acceleration of a dc motor and its controlled top speed made these controllers ideal for industrial machinery. The names Cutler Hammer, Westinghouse, Allen Bradley, and General Electric were synonamous with motor control. They all consisted of similar circuitry but various manufacturers had their own improvements and idiocyncrasies. The motor is usually started and stopped from a normally open and normally closed push button assembly. This controls a relay typically labeled CR, for control relay. The control circuit was also interfaced with overload and overtemp contacts for protection of the motor, the machinery, and human personnel. An M contactor indicates a main contactor. These dc contactors are designed with large current carrying contacts because they are responsible for applying and disconnecting the main circuit for the armature. Once the control circuit is energized, the accelerating of the motor is initiated using a series of resistors and contactors. These contactors are typically labeled 1A, 2A, 3A, and so forth. Accelerating contacts are opened and closed based on the armature current draw in some controllers and by timers in others. Another contactor called the FA contactor, or field accelerating contactor, remained closed during the acceleration of the motor. This contact assures that full power is applied to the shunt field of the motor until it is operating at a constant speed. It imay also be called the FF contactor, or full field contactor by some manufacturers. Once the motor has achieved its appropriate speed, the FA or FF contactor would open and speed control of the motor would be handed over to a rheostat. The rheostat would be in series with the shunt field. By varying the current flow through the shunt field, motors could be regulated for speed. Some forms of protection in these motor starters were added in case of motor winding failure or excessive mechanical loading. The FL contactor, or field loss contactor was typically designed with line coil in series with the shunt field. An open in the shunt field circuit would cause the field loss contactor to open and disable the control circuit acting similar to pressing a stop button. The other form of protection would be and overload circuit. The OL contactor or the OLX contactor were used to monitor an overload condition. These contactors also would act as similar to pressing a stop button. an overload typically senses too much current flow through the armature of the motor caused by internal motor winding shorts and opens, motor brush failure, a mechanical problem due to worn motor bearings, or a mechanical failure in the equipment to which the motor is coupled.
Other optional items added to these magnetic motor starters were components like external current meters for personnel to observe. A load meter is a good example of current monitoring modified to display the load on the motor in real time to the operator. There were also reversing options which enabled the direction of the motor to be changed with a switch or by turning a mechanical handle. With a familiarity of magnetic dc motor starters and basic electrical skills, troubleshooting the control circuits of any of these manufacturers becomes easier with experience because the concept and basic schematics from Cutler Hammer, GE, Allen Bradley, and Westinghouse were always similar.
About the Author
Chet is an associate of Obsolete Industrial Parts, an informative site dedicated to locating obsolete parts for industrial equipment including dc magnetic motor controls, servo motors, obsolete plc's, switches, and a host of other parts. Their official website obsoleteindustrial.com is owned and operated by Val Marketing of Carbondale, PA.
Cutler hammer AC drive tested and repaired at ERD with our 2 Year Warranty