Circuit Breakers

A circuit breaker will interrupt the flow of current in an electrical circuit, safeguarding surrounding electrical components and wiring by preventing circuit overloads and short circuits.

a.k.a. MCB, MCCB, molded case breaker, supplementary protection, UL1077, UL489, UL508, MMP, manual motor protector

 

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  • Available Now!
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    Available Now!

    Noark

    B1E2P100

    1000676

    Miniature Circuit Breaker, UL1077, 2-Poles, 100A, 5kA, 480Y/277VAC, 125VDC, Supplementary Protection

  • Available Now!
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    Available Now!

    Weg

    MPW18-3-U016

    12429373 | Limited Stock Savings: 1 unit available at this price

    Manual Motor Protector, 18A, 10-16A Overload Setting Range, 3-Pole, 690V, 50/60Hz, On/Off Pushbutton, Screw Terminal, IP20

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    Available Now!

    Noark

    B1E1D3

    1000465

    Miniature Circuit Breaker, UL1077, 1-Pole, D-Curve, 3A, 5kA, 277VAC, Supplementary Protection

  • Available Now!
    weg-mpw18__97032.jpg
    Available Now!

    Weg

    MPW18-3-D063

    12429371

    Manual Motor Protector, 18A, 4-6.3A Overload Setting Range, 3-Pole, 690V, 50/60Hz, On/Off Pushbutton, Screw Terminal, IP20

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    noark-b1e-2p-circuitbreak__80558.jpg
    Available Now!

    Noark

    B1E2B30

    1000497, | Limited Stock Savings: 12 units available at this price

    Miniature Circuit Breaker, UL1077, 2-Poles, B-Curve, 30A, 5kA, 480Y/277VAC, Supplementary Protection

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    noark-b1e-2p-circuitbreak__91574.jpg
    Available Now!

    Noark

    B1E2C30

    1000518 | Limited Stock Savings: 2 units available at this price

    Miniature Circuit Breaker, UL1077, 2-Poles, C-Curve, 30A, 5kA, 480Y/277VAC, Supplementary Protection

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    Available Now!

    Noark

    B1N2D25

    1000124 | Limited Stock Savings: 3 units available at this price

    Miniature Circuit Breaker, UL489, 2-Poles, D-Curve, 25A, 240VAC/125VDC, 10kA, Box Lugs

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    noark-b1e-2p-circuitbreak__65396.jpg
    Available Now!

    Noark

    B1E2D20

    1000537 | Limited Stock Savings: 2 units available at this price

    Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 20A, 5kA, 480Y/277VAC, Supplementary Protection

  • Available Now!
    noark-b1e-3p-circuitbreak__72053.jpg
    Available Now!

    Noark

    B1E3C63

    1000587 | Limited Stock Savings: 2 units available at this price

    Miniature Circuit Breaker, UL1077, 3-Poles, C-Curve, 63A, 5kA, 480Y/277VAC, Supplementary Protection

A circuit breaker will interrupt the flow of current in an electrical circuit, safeguarding surrounding electrical components and wiring by preventing circuit overloads and short circuits.

a.k.a. MCB, MCCB, molded case breaker, supplementary protection, UL1077, UL489, UL508, MMP, manual motor protector