Molded Case Breakers

222 products

    Shop our wide selection molded case (MCCB) circuit breakers. 
    222 products
    CJD63B400 - Siemens - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    Siemens / ITE
    TJK436400WL - GE 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    TJK436400WL - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    Sold Out
    KDS4K - Eaton - Mounting Hardware Kit
    400 Amp - 600 Volt
    Eaton Cutler-Hammer
    Sold Out
    KD4K - Eaton - Mounting Hardware Kit
    400 Amp - 600 Volt
    Eaton Cutler-Hammer
    SGDA36AN0400 - GE 400 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    SGDA36AN0400 - GE - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    GE
    SGDA32AT0400 - GE - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 240 Volt
    GE
    Sold Out
    DK3400K - Eaton - Molded Case Circuit Breaker
    DK3400K - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 240 Volt
    Eaton Cutler-Hammer
    Sold Out
    Q4L3400 - Square D 400 Amp 3 Pole 240 Volt Thermal Magnetic Molded Case Circuit Breaker
    Q4L3400 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 240 Volt
    Schneider Electric
    Sale
    MJL36400 - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    MJL36400 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $4,407 CAD
    Sale
    MJA36400 - Square D 400 Amp 3 Pole 600 Volt Plug-In Molded Case Circuit Breaker
    MJA36400 - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $614 CAD
    MGL36400 - Square D 400 Amp 3 Pole 600 Volt Solid State Molded Case Circuit Breaker
    MGL36400 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Sale
    MGA36400 - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $2,440 CAD
    Sale
    LJL36400U33X - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $3,990 CAD
    Sale
    LJL36400U31X - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $1,314 CAD
    Sale
    LJA36400U31X - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $3,470 CAD
    Sale
    LHL36400 - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LHL36400 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $1,101 CAD
    Sale
    LH36400 - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LH36400 - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $1,775 CAD
    LCL36400 - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LCL36400 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Sale
    LA36400 - Square D - Molded Case Circuit Breaker
    LA36400 - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $3,800 CAD
    SGPA36AT0400 - GE 400 amp 3 pole 600 Volt Bolt-On Molded Case Circuit Breaker
    SGPA36AT0400 - GE - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    GE
    Sold Out
    SGLA36AI0400 - GE - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    GE
    Sale
    LRA36400U31X - Square D - Molded Case Circuit Breaker
    LRA36400U31X - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $2,600 CAD
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