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    Industrial Circuit Breakers & Protection Devices

    Ensure electrical safety and operational continuity with our robust selection of air breakers, vacuum circuit breakers, and DIN rail-mounted solutions. Designed to provide dependable circuit protection across industrial power systems and critical infrastructure.

    Safeguard your electrical systems with our comprehensive range of circuit breakers. Our comprehensive range features air breakers, ground & test devices, DIN rail mount circuit breakers, vacuum circuit breakers, and panel mount circuit breakers to meet your circuit protection needs. Whether you're safeguarding critical electrical systems, upgrading industrial equipment, or maintaining power distribution networks, our circuit breakers provide the reliable protection and control you need for optimal performance and safety. Shop now for reliable circuit breakers to protect your electrical systems.

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    Results 301-350 of 449.
    SIEMENS HJD63B250

    SIEMENS

    HJD63B250

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, HIGH IC RATING, TYPE JD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 250 AMP
    $3,097.50 Buy Surplus As Low As $1,858.50
    $1,858.50
    Repair Yours $1,542.56
    SIEMENS HJX3B350

    SIEMENS

    HJX3B350

    VL J HIGH INT BREAKER, BREAKER VL HJG 3P 350A FX
    $34,136.00 Buy Surplus As Low As $20,482.00
    $20,482.00
    Repair Yours $17,001.00
    SIEMENS JMKF400

    SIEMENS

    ITE SIEMENS

    JMKF400

    BREAKER MINING 400A 1KV 14KA FR
    $7,211.00 Buy Surplus As Low As $4,327.00
    $4,327.00
    Repair Yours $3,592.00
    SIEMENS JXD22B225

    SIEMENS

    JXD22B225

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE JD, 240 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 225 AMP
    ✓ IN STOCK!
    $1,641.00 Buy Surplus As Low As $985.00
    $985.00
    Repair Yours $818.00
    SIEMENS JXD22B250

    SIEMENS

    ITE SIEMENS

    JXD22B250

    JXD22B250 CIRCUIT BREAKER, 225A, JXD, CIRCUIT BREAKER, 240V, 250 AMP
    ✓ IN STOCK!
    $1,612.00 Buy Surplus As Low As $968.00
    $968.00
    Repair Yours $804.00
    SIEMENS HB2B020

    SIEMENS

    HB2B020

    CIRCUIT BREAKER, TYPE HBQ, 2 POLE, COMMON-TRIP, 1 PHASE, 20 AMP, 120/240V, 65KA @ 240V, BOLT-ON, THERMAL MAGNETIC
    ✓ IN STOCK!
    $175.00 Buy Surplus As Low As $100.00
    $100.00
    SIEMENS HB3B040

    SIEMENS

    HB3B040

    3-POLE 65K AIC, BREAKER HBQ 3P 240V 40A 65K
    $1,349.00 Buy Surplus As Low As $810.00
    $810.00
    Repair Yours $673.00
    SIEMENS HB3B060

    SIEMENS

    HB3B060

    CIRCUIT BREAKER, THERMAL MAGNETIC, 60 AMP, 3 POLE, 240 VAC, BOLT ON MOUNTING, SCREW TERMINAL
    ✓ IN STOCK!
    $1,349.00 Buy Surplus As Low As $810.00
    $810.00
    Repair Yours $673.00
    SIEMENS HHED63B030L

    SIEMENS

    HHED63B030L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 30 AMP
    $1,260.00 Buy Surplus As Low As $756.00
    $756.00
    Repair Yours $627.48
    SIEMENS HHED63B045L

    SIEMENS

    HHED63B045L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 45 AMP
    $1,295.70 Buy Surplus As Low As $777.42
    $777.42
    Repair Yours $645.26
    SIEMENS HQ2200BH

    SIEMENS

    HQ2200BH

    BREAKER, 200A 4P 120/240V 100K HQPPH
    $2,516.00 Buy Surplus As Low As $1,510.00
    $1,510.00
    Repair Yours $1,254.00
    EATON CORPORATION FDC3200

    EATON CORPORATION

    CUTLER HAMMER

    FDC3200

    MOLDED CASE CIRCUIT BREAKER, C SERIES, F-FRAME, 600 VAC, 250 VDC, 3-POLE, 200 AMP, LOAD SIDE LUGS ONLY
    ✓ IN STOCK!
    $10,131.00 Buy Surplus As Low As $1,043.80
    $1,043.80
    Repair Yours $866.35
    ALLEN BRADLEY 1489-A1C005

    ALLEN BRADLEY

    1489-A1C005

    DISCONTINUED BY MANUFACTURER 04/30/2014, CIRCUIT BREAKER, UL489, MINIATURE, SERIES 1, 10KA, 0.5AMP, 1POLE, 415/277VAC, 48VDC
    ✓ IN STOCK!
    Buy Surplus As Low As $16.00
    $16.00
    ALLEN BRADLEY 1489-A1C015

    ALLEN BRADLEY

    1489-A1C015

    DISCONTINUED BY MANUFACTURER 04/30/2014, MINIATURE CIRCUIT BREAKER, THERMAL MAGNETIC, 1 POLE, 1.5 AMP, 277 VAC, 50-60 HZ
    ✓ IN STOCK!
    Buy Surplus As Low As $34.00 $16.50
    $34.00 $16.50
    ALLEN BRADLEY 1489-A1C020

    ALLEN BRADLEY

    1489-A1C020

    DISCONTINUED BY MANUFACTURER 04/30/2014, CIRCUIT BREAKER, C-CURVE, MINIATURE, 2 AMP, 1 POLE, 277 VAC, 48 VDC, 50/60 HZ, DIN RAIL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $17.39
    $17.39
    ALLEN BRADLEY 1492-SP2D130

    ALLEN BRADLEY

    1492-SP2D130

    DISCONTINUED BY MANUFACTURER, MINIATURE CIRCUIT BREAKER, 1492 SUPPLEMENTARY PROTECTOR, 2 POLE, MAGNETIC T, TYPE D, 415 VAC, 13 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $90.00
    $90.00
    ALLEN BRADLEY 1492-SP2D400

    ALLEN BRADLEY

    1492-SP2D400

    DISCONTINUED BY MANUFACTURER, CIRCUIT BREAKER, 40AMP D-CURVE 2POLE, 1492 SUPPLEMENTARY PROTECTORS, 2 POLES, MAGNETIC T
    Buy Surplus As Low As $107.25
    $107.25
    SIEMENS CFD63B150

    SIEMENS

    CFD63B150

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, HIGHEST IC RATING AND CURRENT LIMITING, TYPE FD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 150 AMP
    $18,363.00 Buy Surplus As Low As $11,018.00
    $11,018.00
    Repair Yours $9,145.00
    ALLEN BRADLEY 1492-MCAA150

    ALLEN BRADLEY

    1492-MCAA150

    CIRCUIT BREAKER, MINIATURE CIRCUIT BREAKER, 120/240 VAC, 50 AMPS, 1 POLE, 1/2 INCH WIDE PER POLE, DIN RAIL MOUNTING, 10 KA, STANDARD TERMINAL
    ✓ IN STOCK!
    Buy Surplus As Low As $31.50
    $31.50
    ALLEN BRADLEY 1492-MCEA120

    ALLEN BRADLEY

    1492-MCEA120

    MINIATURE CIRCUIT BREAKER, GROUND FAULT EQUIPMENT PROTECTOR (GFEP), PANEL MOUNTING, 10 KA, STANDARD TERMINAL, NONE, 120/240V AC, 1POLE, 20 AMPS
    ✓ IN STOCK!
    Buy Surplus As Low As $405.00
    $405.00
    ALLEN BRADLEY 140U-H2C3-C60-A

    ALLEN BRADLEY

    140U-H2C3-C60-A

    DISCONTINUED BY MANUFACTURER, MOLDED CASE CIRCUIT BREAKER, 140U SERIES, H-FRAME, 20-29 KA, FIXED THERMAL/FIXED MAGNETIC, 3-POLE, 60 A, 1 AUX CONTACT
    ✓ IN STOCK!
    Buy Surplus As Low As $792.00
    $792.00
    Repair Yours $580.00
    EATON CORPORATION KG3400

    EATON CORPORATION

    CUTLER HAMMER

    KG3400

    MOLDED CASE CIRCUIT BREAKER, ENGINE GENERATOR, KG FRAME, 3 POLE, 400 AMP TRIP, LINE AND LOAD TERMINALS
    ✓ IN STOCK!
    $2,691.49 Buy Surplus As Low As $1,537.07
    $1,537.07
    Repair Yours $1,276.00
    SIEMENS JXD63S400A

    SIEMENS

    JXD63S400A

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAGNETIC, STANDARD RATING, TYPE JD, 600 VAC, 3 POLE, MOLDED CASE SWITCH, 400 AMP, AUTOMATIC SELF PROTECTION
    ✓ IN STOCK!
    $2,677.50 Buy Surplus As Low As $1,606.50
    $1,606.50
    Repair Yours $1,363.40
    EATON CORPORATION HMCPE003A0C

    EATON CORPORATION

    CUTLER HAMMER

    HMCPE003A0C

    (PRICE/EA) MOTOR CIRCUIT PROTECTOR, 3P, 3A; PRODUCT RANGE:G SERIES; CURRENT RATING:3A; NO. OF POLES:3 POLE; VOLTAGE RATING VDC:250VDC; VOLTAGE RATING VAC:480VAC; CIRCUIT BREAKER MOUNTING:DIN ...
    ✓ IN STOCK!
    $533.00 Buy Surplus As Low As $320.00
    $320.00
    Repair Yours $266.00
    SIEMENS 3TC2LG600LN

    SIEMENS

    3TC2LG600LN

    BRKR VL LG CU BODY 3PC LUG 2W 600KCM LN, NEF, VL CONNECT ACCESS
    ✓ IN STOCK!
    $919.00 Buy Surplus As Low As $699.00
    $699.00
    Repair Yours $459.00
    SIEMENS 5SX2-101-8

    SIEMENS

    ITE SIEMENS

    5SX2-101-8

    DISCONTINUED BY MANUFACTURER, CIRCUIT BREAKER, SUPPLEMENTARY PROTECTION, D-CURVE, 1AMP, 1POLE, 277VAC
    ✓ IN STOCK!
    Buy Surplus As Low As $75.00 $37.50
    $75.00 $37.50
    SIEMENS 5SJ4118-6HG40

    SIEMENS

    5SJ4118-6HG40

    MINIATURE CIRCUIT BREAKER, 240 V 14KA, 1-POLE, B, 15 A, D=70 MM ACCORDING TO UL 489, EQUAL POLARITY
    ✓ IN STOCK!
    $66.00 Buy Surplus As Low As $51.00
    $51.00
    Repair Yours $200.00
    SIEMENS 5SJ4118-7HG40

    SIEMENS

    5SJ4118-7HG40

    MINIATURE CIRCUIT BREAKER, 125AMP, 1POLE, 240V
    ✓ IN STOCK!
    $86.00 Buy Surplus As Low As $52.00
    $52.00
    Repair Yours $200.00
    SIEMENS 5SJ4125-6HG40

    SIEMENS

    5SJ4125-6HG40

    MINIATURE CIRCUIT BREAKER 240 V 14KA, 1-POLE, B, 25A, D=70 MM ACCORDING TO UL 489, EQUAL POLARITY
    $86.00 Buy Surplus As Low As $52.00
    $52.00
    Repair Yours $200.00
    SIEMENS 5SJ4204-7HG41

    SIEMENS

    5SJ4204-7HG41

    CIRCUIT BREAKER, MINIATURE, 4 AMP, 2 POLE, 240 VAC, 50/60 HZ, 4 KV, C-CURVE, DIN-RAIL MOUNT
    ✓ IN STOCK!
    $168.00 Buy Surplus As Low As $101.00
    $101.00
    SIEMENS JD63B250

    SIEMENS

    JD63B250

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAGNETIC, STANDARD RATING, TYPE JD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 250 AMP
    ✓ IN STOCK!
    $1,981.00 Buy Surplus As Low As $1,189.00
    $1,189.00
    Repair Yours $987.00
    SIEMENS JD63B300

    SIEMENS

    JD63B300

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE JD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 300 AMP
    ✓ IN STOCK!
    $2,835.00 Buy Surplus As Low As $1,701.00
    $1,701.00
    Repair Yours $1,411.83
    SIEMENS FXD62B100

    SIEMENS

    FXD62B100

    CIRCUIT BREAKER, SENTRON SERIES, TYPE FXD, THERMAL MAGNETIC, STANDARD INTERRUPTING CAPACITY, 2 POLE, 1 PHASE, 100 AMP, 600 VAC
    $5,638.00 Buy Surplus As Low As $3,383.00
    $3,383.00
    Repair Yours $2,808.00
    SIEMENS HFD63B100

    SIEMENS

    HFD63B100

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, HIGH IC RATING, TYPE FD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 100 AMP
    ✓ IN STOCK!
    $15,800.00 Buy Surplus As Low As $9,480.00
    $9,480.00
    Repair Yours $7,869.00
    SIEMENS HFD63B175

    SIEMENS

    HFD63B175

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, HIGH IC RATING, TYPE FD, 600VAC, 3-POLE, STANDARD 40 DEGREES C BREAKER, 175AMP
    $15,800.00 Buy Surplus As Low As $9,480.00
    $9,480.00
    Repair Yours $7,869.00
    SIEMENS HFG3F250

    SIEMENS

    HFG3F250

    CIRCUIT BREAKER, 3POLE, 250AMP, 480V
    ✓ IN STOCK!
    $5,956.00 Buy Surplus As Low As $801.31
    $801.31
    Repair Yours $666.00
    SIEMENS HFX3P250

    SIEMENS

    ITE SIEMENS

    HFX3P250

    DISCONTINUED BY MANUFACTURER, BREAKER, 250 A, 600 V, 50/60 HZ, 3 POLE
    ✓ IN STOCK!
    Buy Surplus As Low As $720.00
    $720.00
    SIEMENS HHED62B015

    SIEMENS

    ITE SIEMENS

    HHED62B015

    CIRCUIT BREAKER, TYPE HHED, SENTRON SERIES, EXTRA HIGH INTERRUPTING CAPACITY, 2 POLE, 1 PHASE, 15 AMP, 600 VAC
    ✓ IN STOCK!
    $787.00 Buy Surplus As Low As $473.00
    $473.00
    Repair Yours $393.00
    SIEMENS HHED62B020L

    SIEMENS

    HHED62B020L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 20 AMP
    $543.00 Buy Surplus As Low As $326.00
    $326.00
    Repair Yours $271.00
    SIEMENS HHED62B035L

    SIEMENS

    HHED62B035L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 35 AMP
    $871.50 Buy Surplus As Low As $522.90
    $522.90
    Repair Yours $434.01
    SIEMENS HHED62B040

    SIEMENS

    ITE SIEMENS

    HHED62B040

    CIRCUIT BREAKER, TYPE HHED, SENTRON SERIES, EXTRA HIGH INTERRUPTING CAPACITY, 2 POLE, 1 PHASE, 40 AMP, 600 VAC
    ✓ IN STOCK!
    $855.00 Buy Surplus As Low As $513.00
    $513.00
    Repair Yours $426.00
    SIEMENS HHED62B045

    SIEMENS

    HHED62B045

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 45 AMP
    ✓ IN STOCK!
    $1,166.00 Buy Surplus As Low As $770.00
    $770.00
    Repair Yours $581.00
    SIEMENS HHED62B045L

    SIEMENS

    HHED62B045L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 45 AMP
    $450.00 Buy Surplus As Low As $270.00
    $270.00
    Repair Yours $225.00
    SIEMENS HHED62B070L

    SIEMENS

    HHED62B070L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 70 AMP
    $634.00 Buy Surplus As Low As $381.00
    $381.00
    Repair Yours $317.00
    SIEMENS HHED62B080

    SIEMENS

    HHED62B080

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 80 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $825.00
    $825.00
    Repair Yours $640.00
    SIEMENS HHED62B080L

    SIEMENS

    HHED62B080L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 80 AMP
    $461.00 Buy Surplus As Low As $277.00
    $277.00
    Repair Yours $230.00
    SIEMENS HHED62B110L

    SIEMENS

    HHED62B110L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 110 AMP
    $997.50 Buy Surplus As Low As $598.50
    $598.50
    Repair Yours $496.76
    SIEMENS HNX3B100

    SIEMENS

    HNX3B100

    MOLDED CASE CIRCUIT BREAKER, VL SERIES, TYPE HNX, 3 POLES, 3 PHASE, 600 VAC, 1000 AMP, BOLT-ON CONNECTION TYPE, NG FRAME TYPE
    $69,489.00 Buy Surplus As Low As $10,900.00
    $10,900.00
    Repair Yours $9,047.00
    SIEMENS LD62T450

    SIEMENS

    LD62T450

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE LD, 600 VAC, 2 POLE, 40 DEGREES C TRIP UNIT, 450 AMP
    $5,383.00 Buy Surplus As Low As $3,230.00
    $3,230.00
    Repair Yours $2,681.00
    SIEMENS FHOH4

    SIEMENS

    ITE SIEMENS

    FHOH4

    BREAKER HANDLE, MAX-FLEX, HDL TYP 4/4X, ITE MAX-FLEX HANDLE ASSEMBLY, FLANGE MOUNTED ROTARY HANDLE
    $1,128.00 Buy Surplus As Low As $677.00
    $677.00
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