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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 351-400 of 449.
    SIEMENS ED62B030L

    SIEMENS

    ED62B030L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 30 AMP
    $556.50 Buy Surplus As Low As $333.90
    $333.90
    Repair Yours $277.14
    SIEMENS ED62B035L

    SIEMENS

    ED62B035L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 35 AMP
    $556.50 Buy Surplus As Low As $333.90
    $333.90
    Repair Yours $277.14
    SIEMENS JMKT400T

    SIEMENS

    JMKT400T

    BREAKER MINING 400A 1KV 14KA TM TU
    $1,333.00 Buy Surplus As Low As $800.00
    $800.00
    Repair Yours $664.00
    SIEMENS JXD62B300

    SIEMENS

    JXD62B300

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE JD, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 300 AMP
    $2,062.00 Buy Surplus As Low As $1,238.00
    $1,238.00
    Repair Yours $1,028.00
    SIEMENS FXD63B110

    SIEMENS

    FXD63B110

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE FD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 110 AMP
    ✓ IN STOCK!
    $870.00 Buy Surplus As Low As $522.00
    $522.00
    Repair Yours $434.00
    SIEMENS HB1B020

    SIEMENS

    HB1B020

    CIRCUIT BREAKER, BQ SERIES, TYPE HBQ, THERMAL MAGNETIC, HIGH INTERRUPTING CAPACITY, 1 POLE, 1 PHASE, 20 AMP, 120 VAC
    ✓ IN STOCK!
    $268.00 Buy Surplus As Low As $161.00
    $161.00
    Repair Yours $200.00
    SIEMENS HB2B015

    SIEMENS

    HB2B015

    2-POLE 15-60A 65K, BREAKER HBQ 2P 120/240V 15A 65K
    $644.00 Buy Surplus As Low As $387.00
    $387.00
    Repair Yours $322.00
    SIEMENS HB2B040

    SIEMENS

    HB2B040

    2-POLE 15-60A 65K, BREAKER HBQ 2P 120/240V 40A 65K
    $644.00 Buy Surplus As Low As $387.00
    $387.00
    Repair Yours $322.00
    SIEMENS HB2B060

    SIEMENS

    HB2B060

    CIRCUIT BREAKER, BQ SERIES, TYPE HBQ, THERMAL MAGNETIC, HIGH INTERRUPTING CAPACITY, 2 POLE, 1 PHASE, 60 AMP, 120/240 VAC
    $784.00 Buy Surplus As Low As $271.80
    $271.80
    Repair Yours $200.00
    SIEMENS HB3B015

    SIEMENS

    HB3B015

    3-POLE 65K AIC, BREAKER HBQ 3P 240V 15A 65K
    ✓ IN STOCK!
    $1,115.00 Buy Surplus As Low As $669.00
    $669.00
    Repair Yours $556.00
    SIEMENS HB3B020

    SIEMENS

    HB3B020

    CIRCUIT BREAKER, BQ SERIES, TYPE HBQ, THERMAL MAGNETIC, HIGH INTERRUPTING CAPACITY, 3 POLE, 3 PHASE, 20 AMP, 240 VAC
    ✓ IN STOCK!
    $1,115.00 Buy Surplus As Low As $386.70
    $386.70
    Repair Yours $290.00
    SIEMENS HB3B030

    SIEMENS

    ITE SIEMENS

    HB3B030

    MOLDED CASE CIRCUIT BREAKER, TYPE HBQ, 3 POLE, 240 VAC, 30 AMP, BOLT-ON
    ✓ IN STOCK!
    $1,115.00 Buy Surplus As Low As $669.00
    $669.00
    Repair Yours $556.00
    SIEMENS HB3B070

    SIEMENS

    HB3B070

    CIRCUIT BREAKER, BQ SERIES, TYPE HBQ, THERMAL MAGNETIC, HIGH INTERRUPTING CAPACITY, 3 POLE, 3 PHASE, 70 AMP, 240 VAC
    $1,444.00 Buy Surplus As Low As $500.40
    $500.40
    Repair Yours $290.00
    SIEMENS HB3B080

    SIEMENS

    HB3B080

    3-POLE 65K AIC, BREAKER HBQ 3P 240V 80A 65K
    $1,696.00 Buy Surplus As Low As $1,018.00
    $1,018.00
    Repair Yours $845.00
    SIEMENS HB3B090

    SIEMENS

    HB3B090

    CIRCUIT BREAKER, HBQ, 3 POLE, 240 VOLTS, 90 AMPS, 65K
    ✓ IN STOCK!
    $1,696.00 Buy Surplus As Low As $1,018.00
    $1,018.00
    Repair Yours $845.00
    SIEMENS HHED63B020L

    SIEMENS

    HHED63B020L

    CIRCUIT BREAKER, MOLDED CASE, 20AMP, 600V, 3-POLE, FEED THRU MOUNT
    ✓ IN STOCK!
    $1,295.70 Buy Surplus As Low As $1,230.92
    $1,230.92
    Repair Yours $645.26
    SIEMENS HHED63B035L

    SIEMENS

    HHED63B035L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 35 AMP
    $1,295.70 Buy Surplus As Low As $777.42
    $777.42
    Repair Yours $645.26
    SIEMENS HHED63B040L

    SIEMENS

    HHED63B040L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 40 AMP
    ✓ IN STOCK!
    $911.00 Buy Surplus As Low As $602.00
    $602.00
    Repair Yours $455.00
    SIEMENS HHED63B050L

    SIEMENS

    HHED63B050L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, EXTRA HIGH IC RATING, TYPE ED, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 50 AMP
    $1,568.70 Buy Surplus As Low As $941.22
    $941.22
    Repair Yours $781.21
    SIEMENS HHED63B060

    SIEMENS

    ITE SIEMENS

    HHED63B060

    DISCONTINUED BY MANUFACTURER, CIRCUIT BREAKER, TYPE ED, 18KA, 60AMP, 3POLE, 600VAC, LD LUG
    ✓ IN STOCK!
    Buy Surplus As Low As $1,400.00
    $1,400.00
    Repair Yours $1,162.00
    SIEMENS ED62B050

    SIEMENS

    ITE SIEMENS

    ED62B050

    CIRCUIT BREAKER, 600V, 50 AMP, TYPE ED
    $472.00 Buy Surplus As Low As $284.00
    $284.00
    Repair Yours $250.00
    SIEMENS ED62B060L

    SIEMENS

    ITE SIEMENS

    ED62B060L

    CIRCUIT BREAKER 60AMP 2POLE 600V 18KA LUGS
    $731.00 Buy Surplus As Low As $439.00
    $439.00
    Repair Yours $365.00
    SIEMENS ED62B090

    SIEMENS

    ED62B090

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAGNETIC, STANDARD RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 90 AMP
    $746.00 Buy Surplus As Low As $390.00
    $390.00
    Repair Yours $324.00
    SIEMENS ED62B100

    SIEMENS

    ED62B100

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE ED, 600 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 100 AMP
    ✓ IN STOCK!
    Buy Surplus As Low As $280.30
    $280.30
    Repair Yours $543.00
    SIEMENS BQ1B025H

    SIEMENS

    BQ1B025H

    BQ1B025H CIRCUIT BREAKER, 25A, BQ, CIRCUIT BREAKER, 120V, 25 AMP
    $71.40 Buy Surplus As Low As $42.84
    $42.84
    Repair Yours $200.00
    SIEMENS BQ1B035

    SIEMENS

    BQ1B035

    CIRCUIT BREAKER, BQ SERIES, TYPE BQ, THERMAL MAGNETIC, STANDARD INTERRUPTING CAPACITY, 1 POLE, 1 PHASE, 35 AMP, 120 VAC
    ✓ IN STOCK!
    $21.00 Buy Surplus As Low As $17.85
    $17.85
    Repair Yours $200.00
    SIEMENS BQ1B040H

    SIEMENS

    BQ1B040H

    BQ1B040H CIRCUIT BREAKER, 40A, BQ, CIRCUIT BREAKER, 120V, 40 AMP
    ✓ IN STOCK!
    $71.40 Buy Surplus As Low As $42.84
    $42.84
    Repair Yours $200.00
    SIEMENS BQ1B060H

    SIEMENS

    BQ1B060H

    BQ1B060H CIRCUIT BREAKER, 60A, BQ, CIRCUIT BREAKER, 120V, 60 AMP
    $71.40 Buy Surplus As Low As $42.84
    $42.84
    Repair Yours $200.00
    SIEMENS BQ2B015QX

    SIEMENS

    BQ2B015QX

    SIEMENS, BQ2B015QX, BREAKER 15A 2P 120/240V 10K BQ QCK-CON
    ✓ IN STOCK!
    $165.00 Buy Surplus As Low As $99.00
    $99.00
    Repair Yours $200.00
    SIEMENS BQ2B020H

    SIEMENS

    BQ2B020H

    BQ2B020H CIRCUIT BREAKER, 20A, BQ, CIRCUIT BREAKER, 240V, 20 AMP
    ✓ IN STOCK!
    $86.10 Buy Surplus As Low As $51.66
    $51.66
    Repair Yours $200.00
    SIEMENS BQ2B020HC

    SIEMENS

    BQ2B020HC

    BREAKERR BQH 2P 120/240V 20A 22K R TOUNGE, CIRCUIT BREAKER BQ & HB
    ✓ IN STOCK!
    $174.00 Buy Surplus As Low As $115.00
    $115.00
    Repair Yours $200.00
    SIEMENS BQ2B045

    SIEMENS

    BQ2B045

    CIRCUIT BREAKER, TYPE BQ, 2 POLE, 1 PHASE, 45 AMP, 240V, 10 KAIC, STANDARD INTERRUPT, BOLT-ON, LOAD SIDE LUGS, THERMAL MAGNETIC
    ✓ IN STOCK!
    $49.35 Buy Surplus As Low As $29.61
    $29.61
    Repair Yours $200.00
    SIEMENS CFD63B125

    SIEMENS

    CFD63B125

    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, 125 AMP
    ✓ IN STOCK!
    $2,541.00 Buy Surplus As Low As $1,268.25
    $1,268.25
    Repair Yours $809.42
    SIEMENS CFD63B225

    SIEMENS

    CFD63B225

    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, 225 AMP
    ✓ IN STOCK!
    $24,552.00 Buy Surplus As Low As $18,660.00
    $18,660.00
    Repair Yours $12,228.00
    SIEMENS CJD63B225

    SIEMENS

    CJD63B225

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, HIGHEST IC RATING AND CURRENT LIMITING, TYPE JD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 225 AMP
    $22,601.00 Buy Surplus As Low As $13,561.00
    $13,561.00
    Repair Yours $11,256.00
    SIEMENS CJD63S400A

    SIEMENS

    ITE SIEMENS

    CJD63S400A

    CIRCUIT BREAKER, SENTRON, TYPE CJD, 3 POLE, 3 PHASE, 400 AMP, 600V, 150KAIC @ 480V, BOLT-ON, NON-AUTOMATIC SWITCH
    ✓ IN STOCK!
    $19,913.00 Buy Surplus As Low As $11,948.00
    $11,948.00
    Repair Yours $9,917.00
    SIEMENS CLD63B500

    SIEMENS

    CLD63B500

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, HIGHEST IC RATING AND CURRENT LIMITING, TYPE LD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 500 AMP
    $36,094.00 Buy Surplus As Low As $21,657.00
    $21,657.00
    Repair Yours $17,976.00
    SIEMENS CLD63B600

    SIEMENS

    ITE SIEMENS

    CLD63B600

    CIRCUIT BREAKER, 600AMP, 3POLE, 600V, ADJUSTABLE INSTANTANEOUS MAGNETIC TRIP
    $36,581.28 Buy Surplus As Low As $5,000.00
    $5,000.00
    Repair Yours $4,150.00
    SIEMENS CND63B800H

    SIEMENS

    CND63B800H

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, HIGHEST IC RATING AND CURRENT LIMITING, TYPE ND, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 800 AMP , 100 PERCENT RATED
    $81,174.00 Buy Surplus As Low As $48,705.00
    $48,705.00
    Repair Yours $40,426.00
    SIEMENS CQDST12

    SIEMENS

    CQDST12

    BREAKER CQD 12VDC SHUNT TRP, CIRCUIT BREAKER PANELB & SWB ACCESSORY
    $651.00 Buy Surplus As Low As $390.60
    $390.60
    Repair Yours $324.20
    SIEMENS CQDST480

    SIEMENS

    CQDST480

    BREAKER CQD 480VAC SHUNT TRP, CIRCUIT BREAKER PANELB & SWB ACCESSORY
    $1,341.00 Buy Surplus As Low As $805.00
    $805.00
    Repair Yours $669.00
    SIEMENS CRHOH

    SIEMENS

    SIEMENS INDUSTRY

    CRHOH

    ROTARY HANDLE, FOR CIRCUIT BREAKER, BRKR ED/FD/JD/LD/LMD, HANDLE ONLY
    ✓ IN STOCK!
    $26.00 Buy New $26.00
    $18.00
    SIEMENS ED42B050L

    SIEMENS

    ED42B050L

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE ED, 480 VAC, 2 POLE, STANDARD 40 DEGREES C BREAKER, 50 AMP
    ✓ IN STOCK!
    $436.00 Buy Surplus As Low As $288.00
    $288.00
    Repair Yours $218.00
    SIEMENS FD63B175

    SIEMENS

    FD63B175

    MOLDED CASE CIRCUIT BREAKER, SENTRON SERIES, THERMAL MAHNETIC, STANDARD RATING, TYPE FD, 600 VAC, 3 POLE, STANDARD 40 DEGREES C BREAKER, 175 AMP
    $7,568.00 Buy Surplus As Low As $4,541.00
    $4,541.00
    Repair Yours $3,770.00
    SIEMENS HDX3B060

    SIEMENS

    HDX3B060

    DISCONTINUED BY MANUFACTURER, CIRCUIT BREAKER, W/O LUG, MOLDED CASE, NON-INTERCHANGEABLE TRIP, HIGH INTERRUPTING CAPACITY, THERMAL MAGNETIC, TYPE HDX, 3 POLE, 3 PHASE, 60 AMP, 600 VOLT, 50/6 ...
    ✓ IN STOCK!
    Buy Surplus As Low As $2,601.00
    $2,601.00
    Repair Yours $540.00
    SIEMENS HED41B060

    SIEMENS

    HED41B060

    CIRCUIT BREAKER, SENTRON SERIES, TYPE HED, THERMAL MAGNETIC, HIGH INTERRUPTING CAPACITY, 1 POLE, 1 PHASE, 60 AMP, 277 VAC
    $1,322.00 Buy Surplus As Low As $794.00
    $794.00
    Repair Yours $660.00
    SIEMENS HED42B015L

    SIEMENS

    ITE SIEMENS

    HED42B015L

    CIRCUIT BREAKER ED, 15AMP, 2P, 480V, 42KA, LUGS
    ✓ IN STOCK!
    $562.80 Buy Surplus As Low As $534.66
    $534.66
    Repair Yours $280.27
    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
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