Molded Case Breakers

1185 products

    Shop our wide selection molded case (MCCB) circuit breakers. 
    1185 products
    QRH23B200 - Siemens - Molded Case Circuit Breaker
    QRH23B200 - Siemens - Molded Case Circuit Breaker
    Bolt On - 200 Amp - 3 Pole - 240 Volt
    Siemens / ITE
    QR23B200 - Siemens - Molded Case Circuit Breaker
    QR23B200 - Siemens - Molded Case Circuit Breaker
    Bolt On - 200 Amp - 3 Pole - 240 Volt
    Siemens / ITE
    QR22B150 - Siemens - Molded Case Circuit Breaker
    QR22B150 - Siemens - Molded Case Circuit Breaker
    Bolt On - 150 Amp - 2 Pole - 240 Volt
    Siemens / ITE
    Sold Out
    QJ22B100 - Siemens - Molded Case Circuit Breaker
    QJ22B100 - Siemens - Molded Case Circuit Breaker
    Bolt On - 100 Amp - 2 Pole - 240 Volt
    Siemens / ITE
    PXD63B160 - Siemens - Molded Case Circuit Breaker
    Bolt On - 1600 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    NGB3B090B - Siemens - Molded Case Circuit Breaker
    NGB3B090B - Siemens - Molded Case Circuit Breaker
    Bolt On - 90 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    NGB3B015B - Siemens - Molded Case Circuit Breaker
    NGB3B015B - Siemens - Molded Case Circuit Breaker
    Bolt On - 15 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    MB9301 - Siemens - Molded Case Circuit Breaker
    MB9301 - Siemens - Molded Case Circuit Breaker
    Bolt On - 1600 Amp - 600 Volt
    Siemens / ITE
    JD63F400 - Siemens 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker Frame
    JD63F400 - Siemens - Frame
    Bolt-on - 400 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    HHJD63F400 - Siemens - Frame
    Bolt-on - 400 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    Sale
    FXD63A250 - Siemens - Molded Case Circuit Breaker
    Bolt-on - 250 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    Save $500 CAD
    FD63F250 - Siemens 250 Amp 3 Pole 600 Volt Bolt-On Circuit Breaker Frame
    FD63F250 - Siemens - Frame
    Bolt-on - 250 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    ED63B040L - Siemens - Molded Case Circuit Breaker
    ED63B040L - Siemens - Molded Case Circuit Breaker
    Feed Thru - 40 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    Sale
    ED43B100 - Siemens - Molded Case Circuit Breaker
    ED43B100 - Siemens - Molded Case Circuit Breaker
    Bolt On - 100 Amp - 3 Pole - 480 Volt
    Siemens/ITE
    Save $100 CAD
    LGG3B030L - Siemens - Molded Case Circuit Breaker
    LGG3B030L - Siemens - Molded Case Circuit Breaker
    Feed-Thru - 30 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    HGB3B015B - Siemens - Molded Case Circuit Breaker
    HGB3B015B - Siemens - Molded Case Circuit Breaker
    Bolt-On - 15 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    HGB3B060B - Siemens 60 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    HGB3B060B - Siemens - Molded Case Circuit Breaker
    Bolt-On - 60 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    HGB3B030B - Siemens 30 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    HGB3B030B - Siemens - Molded Case Circuit Breaker
    Bolt-On - 30 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    HED43B050 - Siemens 50 Amp 3 Pole 480 Volt Bolt-On Molded Case Circuit Breaker
    HED43B050 - Siemens - Molded Case Circuit Breaker
    Bolt On - 50 Amp - 3 Pole - 480 Volt
    Siemens/ITE
    ED63B070 - Siemens - Molded Case Circuit Breaker
    ED63B070 - Siemens - Molded Case Circuit Breaker
    Bolt On - 70 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    CED63B090 - Siemens 90 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    CED63B090 - Siemens - Molded Case Circuit Breaker
    Bolt On - 90 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    CED63B050 - Siemens 50 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    CED63B050 - Siemens - Molded Case Circuit Breaker
    Bolt On - 50 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    NGG2B060L - Siemens 60 Amp 2 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    NGG2B060L - Siemens - Molded Case Circuit Breaker
    Feed Thru - 60 Amp - 2 Pole - 600 Volt
    Siemens / ITE
    NGG3B050L - Siemens - Molded Case Circuit Breaker
    NGG3B050L - Siemens - Molded Case Circuit Breaker
    Feed-Thru - 50 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    HFD63B200 - Siemens - Molded Case Circuit Breaker
    HFD63B200 - Siemens - Molded Case Circuit Breaker
    Bolt-On - 200 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    ED63B025 - Siemens - Molded Case Circuit Breaker
    ED63B025 - Siemens - Molded Case Circuit Breaker
    Bolt On - 25 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    ED43B045 - Siemens - Molded Case Circuit Breaker
    Bolt On - 45 Amp - 3 Pole - 480 Volt
    Siemens/ITE
    ED23B030 - Siemens 30 Amp 3 Pole 240 Volt Bolt-On Molded Case Circuit Breaker
    ED23B030 - Siemens - Molded Case Circuit Breaker
    Bolt On - 30 Amp - 3 Pole - 240 Volt
    Siemens/ITE
    Sold Out
    ED21B015 - Siemens - Molded Case Circuit Breaker
    ED21B015 - Siemens - Molded Case Circuit Breaker
    Bolt On - 15 Amp - 1 Pole - 120 Volt
    Siemens/ITE
    CQD330 - Siemens - Molded Case Circuit Breaker
    CQD330 - Siemens - Molded Case Circuit Breaker
    Feed Thru - 30 Amp - 3 Pole - 480 Volt
    Siemens / ITE
    ED61B020L - Siemens - Molded Case Circuit Breaker
    Feed Thru - 20 Amp - 1 Pole - 600 Volt
    Siemens/ITE
    QR23B125 - Siemens - Molded Case Circuit Breaker
    QR23B125 - Siemens - Molded Case Circuit Breaker
    Bolt On - 125 Amp - 3 Pole - 240 Volt
    Siemens / ITE
    QR22B200 - Siemens - Molded Case Circuit Breaker
    QR22B200 - Siemens - Molded Case Circuit Breaker
    Bolt On - 200 Amp - 2 Pole - 240 Volt
    Siemens / ITE
    QJ23B150 - Siemens - Molded Case Circuit Breaker
    QJ23B150 - Siemens - Molded Case Circuit Breaker
    Bolt On - 150 Amp - 3 Pole - 240 Volt
    Siemens / ITE
    NGB3B100B - Siemens - Molded Case Circuit Breaker
    NGB3B100B - Siemens - Molded Case Circuit Breaker
    Bolt On - 100 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    NGB3B030B - Siemens - Molded Case Circuit Breaker
    NGB3B030B - Siemens - Molded Case Circuit Breaker
    Bolt On - 30 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    LXD63B600 - Siemens - Molded Case Circuit Breaker
    Bolt On - 600 Amp - 3 Pole - 480 Volt
    Siemens / ITE
    JD63T300 - Siemens 300 Amp 3 Pole 600 Volt Molded Case Circuit Breaker Trip Unit
    JD63T300 - Siemens - Trip Unit
    Feed Thru - 300 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    JD63T250 - Siemens 250 Amp 3 Pole 600 Volt Molded Case Circuit Breaker Trip Unit
    JD63T250 - Siemens - Trip Unit
    Feed Thru - 250 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    HEB3B015B - Siemens - Molded Case Circuit Breaker
    HEB3B015B - Siemens - Molded Case Circuit Breaker
    Bolt-on - 15 Amp - 3 Pole - 600 Volt
    Siemens / ITE
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