Molded Case Breakers

78 products

    Shop our wide selection molded case (MCCB) circuit breakers. 
    78 products
    KD3300 - Eaton - Molded Case Circuit Breaker
    KD3300 - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HKD3300 - Eaton - Molded Case Circuit Breaker
    HKD3300 - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    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
    Sale
    LAL36300 - Square D - Molded Case Circuit Breaker
    LAL36300 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $764 CAD
    TJJ436300 - GE - Molded Case Circuit Breaker
    TJJ436300 - GE - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    GE
    HHJXD63B300 - Siemens - Molded Case Circuit Breaker
    HHJXD63B300 - Siemens - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    HJXD63B300L - Siemens - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    JXD63B300 - Siemens - Molded Case Circuit Breaker
    Bolt-on - 300 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    Sale
    LH36300 - Square D 300 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LH36300 - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 300 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $830 CAD
    Sale
    LA36300 - Square D - Molded Case Circuit Breaker
    LA36300 - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 300 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $3,800 CAD
    Sale
    LGS3300FAG - Eaton - Molded Case Circuit Breaker
    LGS3300FAG - Eaton - Molded Case Circuit Breaker
    Feed Thru - 300A - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    Save $544.01 CAD
    LGE3300FAG - Eaton - Molded Case Circuit Breaker
    LGE3300FAG - Eaton - Molded Case Circuit Breaker
    Feed Thru - 300A - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    Sale
    LDC3300 - Eaton - Molded Case Circuit Breaker
    LDC3300 - Eaton - Molded Case Circuit Breaker
    Feed Thru - 300A - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    Save $8,805.91 CAD
    HMDL3300 - Eaton - Molded Case Circuit Breaker
    HMDL3300 - Eaton - Molded Case Circuit Breaker
    Feed Thru - 300A - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    JXD63B300HL - Siemens - Molded Case Circuit Breaker
    Bolt-In - 300 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    JXD23B300L - Siemens - Molded Case Circuit Breaker
    JXD23B300L - Siemens - Molded Case Circuit Breaker
    Bolt-In - 300 Amp - 3 Pole - 240 Volt
    Siemens/ITE
    Sale
    JXD22B300L - Siemens - Molded Case Circuit Breaker
    Bolt-In - 300 Amp - 2 Pole - 240 Volt
    Siemens/ITE
    Save $2,017.01 CAD
    Sold Out
    JD63B300L - Siemens - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    HHJXD63B300L - Siemens - Molded Case Circuit Breaker
    HHJXD63B300L - Siemens - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    KDC3300Y - Eaton Molded Case Circuit Breakers
    KDC3300Y - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KDC3300X - Eaton Molded Case Circuit Breakers
    KDC3300X - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KDC3300C - Eaton Molded Case Circuit Breakers
    KDC3300C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KDC3300W - Eaton Molded Case Circuit Breakers
    KDC3300W - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KDB3300Y - Eaton Molded Case Circuit Breakers
    KDB3300Y - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KDB3300X - Eaton Molded Case Circuit Breakers
    KDB3300X - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KDB3300C - Eaton Molded Case Circuit Breakers
    KDB3300C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KDB3300W - Eaton Molded Case Circuit Breakers
    KDB3300W - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KD3300Y - Eaton Molded Case Circuit Breakers
    KD3300Y - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KD3300X - Eaton Molded Case Circuit Breakers
    KD3300X - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KD3300C - Eaton Molded Case Circuit Breakers
    KD3300C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    KD3300W - Eaton Molded Case Circuit Breakers
    KD3300W - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    LD3300Y - Eaton Molded Case Circuit Breakers
    LD3300Y - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    LD3300X - Eaton Molded Case Circuit Breakers
    LD3300X - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    LD3300C - Eaton Molded Case Circuit Breakers
    LD3300C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    LD3300W - Eaton Molded Case Circuit Breakers
    LD3300W - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    MDL3300Y - Eaton Molded Case Circuit Breakers
    MDL3300Y - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    MDL3300X - Eaton Molded Case Circuit Breakers
    MDL3300X - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    MDL3300C - Eaton Molded Case Circuit Breakers
    MDL3300C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    MDL3300W - Eaton Molded Case Circuit Breakers
    MDL3300W - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HKD3300Y - Eaton Molded Case Circuit Breaker
    HKD3300Y - Eaton - Molded Case Circuit Breaker
    Bolt-On - 300 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
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