Molded Case Breakers

98 products

    Shop our wide selection molded case (MCCB) circuit breakers. 
    98 products
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    EJB36045 - Square D 45 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    EJB36045 - Square D 45 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    EJB36045 - Square D - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $750 CAD
    ED43B045 - Siemens - Molded Case Circuit Breaker
    Bolt On - 45 Amp - 3 Pole - 480 Volt
    Siemens/ITE
    THQC2145WL - GE - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 2 Pole - 240 Volt
    GE
    FD3045 - Eaton - Molded Case Circuit Breaker
    FD3045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    ED63B045 - Siemens - Moded Case Circuit Breaker
    ED63B045 - Siemens - Moded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    GD3045 - Eaton - Molded Case Circuit Breaker
    GD3045 - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 480 Volt
    Eaton Cutler-Hammer
    ED61B045L - Siemens - Molded Case Circuit Breaker
    Feed Thru - 45 Amp - 1 Pole - 600 Volt
    Siemens/ITE
    Sale
    FAL36045 - Square D 45 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    FAL36045 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $339 CAD
    EDB34045 - Square D 45 Amp 3 Pole 480 Volt Bolt-On Molded Case Circuit Breaker
    EDB34045 - Square D - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 480 Volt
    Schneider Electric
    Sale
    HJL36045 - Square D - Molded Case Circuit Breaker
    HJL36045 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $290 CAD
    HFD2045 - Eaton - Molded Case Circuit Breaker
    HFD2045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 2 Pole - 600 Volt
    Eaton Cutler-Hammer
    FDC3045 - Eaton - MoldedCase Circuit Breakers
    FDC3045 - Eaton - MoldedCase Circuit Breakers
    Bolt-On - 45 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    FDC2045 - Eaton - Molded Case Circuit Breaker
    FDC2045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 2 Pole - 600 Volt
    Eaton Cutler-Hammer
    FDB2045 - Eaton - Molded Case Circuit Breaker
    FDB2045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 2 Pole - 600 Volt
    Eaton Cutler-Hammer
    Sale
    FD2045 - Eaton - Molded Case Circuit Breaker
    FD2045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 2 Pole - 600 Volt
    Eaton Cutler-Hammer
    Save $160 CAD
    Sale
    FD1045 - Eaton - Molded Case Circuit Breaker
    FD1045 (277V)- Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    Save $100 CAD
    EHD3045 - Eaton - Molded Case Circuit Breaker
    EHD3045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 480 Volt
    Eaton Cutler-Hammer
    Sold Out
    EHD2045 - Eaton - Molded Case Circuit Breaker
    EHD2045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 2 Pole - 480 Volt
    Eaton Cutler-Hammer
    EHD1045 - Eaton - Molded Case Circuit Breaker
    EHD1045 - Eaton - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    ED22B045L - Siemens - Molded Case Circuit Breaker
    ED22B045L - Siemens - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 2 Pole - 240 Volt
    Siemens/ITE
    ED21B045L - Siemens - Molded Case Circuit Breaker
    ED21B045L - Siemens - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 1 Pole - 120 Volt
    Siemens/ITE
    Sale
    THQC32045 - GE - Molded Case Circuit Breaker
    THQC32045 - GE - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 240 Volt
    GE
    Save $71.01 CAD
    THQC2145 - GE - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 2 Pole - 240 Volt
    GE
    ED61B045 - Siemens - Moded Case Circuit Breaker
    Bolt-On - 45 Amp - 1 Pole - 600 Volt
    Siemens/ITE
    HHED63B045L - Siemens - 45 Amp Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    Sold Out
    HED43B045L - Siemens 45 Amp 3 Pole 480 Volt Feed Thru Molded Case Circuit Breaker
    HED43B045L - Siemens - 45 Amp Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 480 Volt
    Siemens/ITE
    Sale
    HLL36045 - Square D 45 Amp 3 Pole 600 Volt Feed Thru Molded Case Circuit Breaker
    HLL36045 - Square D - 45 Amp Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $890 CAD
    Sale
    BJA36045 - Square D 45 Amp 3 Pole 600 Volt Plug-In Molded Case Circuit Breaker
    BJA36045 - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 45 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $100 CAD
    THED136045 - GE - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 600 Volt
    GE
    TED124045 - GE - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 2 Pole - 480 Volt
    GE
    TED134045 - GE 45 Amp 3 Pole 480 Volt Molded Case Thermal Magnetic Circuit Breaker
    TED134045 - GE - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 480 Volt
    GE
    TED136045 - GE 45 Amp 3 Pole 600 Volt Molded Case Thermal Magnetic Circuit Breaker
    TED136045 - GE - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 600 Volt
    GE
    Sale
    HFD3045 - Eaton - Moded Case Circuit Breaker
    HFD3045 - Eaton - Moded Case Circuit Breaker
    Feed Thru - 45 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    Save $1,580.19 CAD
    Sold Out
    TEYH3045B - GE 45 Amp 3 Pole 480 Volt Bolt-On Molded Case Circuit Breaker
    TEYH3045B - GE - Molded Case Circuit Breaker
    Bolt-On- 45 Amp - 3 Pole - 480 Volt
    GE
    Sale
    EGB36045 - Square D 45 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    EGB36045 - Square D 45 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    EGB36045 - Square D - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 480 Volt
    Schneider Electric
    Save $510 CAD
    EGE3045FFG - Eaton - Molded Case Circuit Breaker
    EGE3045FFG - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    Sale
    EJB24045 - Square D 45 Amp 2 Pole 480 Volt Bolt-On Molded Case Circuit Breaker
    EJB24045 - Square D 45 Amp 2 Pole 480 Volt Bolt-On Molded Case Circuit Breaker
    EJB26045 - Square D 45 Amp 2 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 2 Pole - 600 Volt
    Schneider Electric
    Save $450 CAD
    TEYL3045B - GE 45 Amp 3 Pole 480 Volt Bolt-On Molded Case Circuit Breaker
    TEYL3045B - GE - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 480 Volt
    GE
    FBN36TE045RV - GE 45 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    FBN36TE045RV - GE - Molded Case Circuit Breaker
    Bolt-On - 45 Amp - 3 Pole - 600 Volt
    GE
    Sold Out
    CQD345 - Siemens - Molded Case Circuit Breaker
    CQD345 - Siemens - Molded Case Circuit Breaker
    Feed-Thru - 45 Amp - 3 Pole - 480 Volt
    Siemens / ITE
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