Molded Case Breakers

228 products

    Shop our wide selection molded case (MCCB) circuit breakers. 
    228 products
    EDB14020 - Square D 20 Amp 1 Pole 277 Volt Bolt-On Circuit Molded Case Breaker
    EDB14020 - Square D - Molded Case Circuit Breaker
    Bolt-On - 20 Amp - 1 Pole - 277 Volt
    Schneider Electric
    EDB14030 - Square D 30 Amp 1 Pole 277 Volt Bolt-On Circuit Breaker
    EDB14030 - Square D - Molded Case Circuit Breaker
    Bolt-On - 30 Amp - 1 Pole - 277 Volt
    Schneider Electric
    Sale
    EGB14015 - Square D 15 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker
    EGB14015 - Square D 15 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker
    EGB14015 - Square D - Molded Case Circuit Breaker
    Bolt-On - 15 Amp - 1 Pole - 277 Volt
    Schneider Electric
    Save $72 CAD
    Sale
    EGB16015 - Square D 15 Amp 1 Pole 347 Volt Bolt-On Molded Case Circuit Breaker
    EGB16015 - Square D 15 Amp 1 Pole 347 Volt Bolt-On Molded Case Circuit Breaker
    EGB16015 - Square D - Molded Case Circuit Breaker
    Bolt-On - 15 Amp - 1 Pole - 347 Volt
    Schneider Electric
    Save $57 CAD
    Sale
    EJB14015 - Square D 15 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker
    EJB14015 - Square D 15 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker
    EJB14015 - Square D - Molded Case Circuit Breaker
    Bolt-On - 15 Amp - 1 Pole - 277 Volt
    Schneider Electric
    Save $57 CAD
    Sold Out
    EJB16015 - Square D 15 Amp 1 Pole 347 Volt Bolt-On Molded Case Circuit Breaker
    EJB16015 - Square D 15 Amp 1 Pole 347 Volt Bolt-On Molded Case Circuit Breaker
    EJB16015 - Square D - Molded Case Circuit Breaker
    Bolt-On - 15 Amp - 1 Pole - 347 Volt
    Schneider Electric
    Save $99 CAD
    Sold Out
    CQD120 - Siemens - Molded Case Circuit Breaker
    CQD120 - Siemens - Molded Case Circuit Breaker
    Feed Thru - 20 Amp - 1 Pole - 277 Volt
    Siemens / ITE
    Sale
    EJB16020 - Square D 20 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker
    EJB16020 - Square D 20 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker
    EJB16020 - Square D - Molded Case Circuit Breaker
    Bolt-On - 20 Amp - 1 Pole - 347 Volt
    Schneider Electric
    Save $99 CAD
    Sale
    EJB16030 - Square D 30 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker
    EJB16030 - Square D 30 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker
    EJB16030 - Square D - Molded Case Circuit Breaker
    Bolt-On - 30 Amp - 1 Pole - 347 Volt
    Schneider Electric
    Save $138 CAD
    EHD1020L - Eaton - Molded Case Circuit Breaker
    EHD1020L - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 20 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    Sale
    FD1020 - Eaton - Molded Case Circuit Breaker
    FD1020 (277V) - Eaton - Molded Case Circuit Breaker
    Bolt On - 20 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    Save $100 CAD
    EDB14040 - Square D 40 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker
    EDB14040 - Square D - Molded Case Circuit Breaker
    Bolt-On - 40 Amp - 1 Pole - 277 Volt
    Schneider Electric
    Sale
    EGB26020 - Square D 20 Amp 2 Pole 600 Volt Bolt-On Circuit Molded Case Breaker
    EGB26020 - Square D 20 Amp 2 Pole 600 Volt Bolt-On Circuit Molded Case Breaker
    EGB26020 - Square D - Molded Case Circuit Breaker
    Bolt-On - 20 Amp - 2 Pole - 480 Volt
    Schneider Electric
    Save $73 CAD
    Sale
    EGB16020 - Square D 20 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker
    EGB16020 - Square D 20 Amp 1 Pole 347 Volt Bolt-On Circuit Molded Case Breaker
    EGB16020 - Square D - Molded Case Circuit Breaker
    Bolt-On - 20 Amp - 1 Pole - 277 Volt
    Schneider Electric
    Save $87 CAD
    Sale
    EGB24020 - Square D 20 Amp 2 Pole 480 Volt Bolt-On Circuit Molded Case Breaker
    EGB24020 - Square D 20 Amp 2 Pole 480 Volt Bolt-On Circuit Molded Case Breaker
    EGB24020 - Square D - Molded Case Circuit Breaker
    Bolt-On - 20 Amp - 2 Pole - 480 Volt
    Schneider Electric
    Save $103 CAD
    Sale
    EGB14020 - Square D 20 Amp 1 Pole 277 Volt Bolt-On Circuit Molded Case Breaker
    EGB14020 - Square D 20 Amp 1 Pole 277 Volt Bolt-On Circuit Molded Case Breaker
    EGB14020 - Square D - Molded Case Circuit Breaker
    Bolt-On - 20 Amp - 1 Pole - 277 Volt
    Schneider Electric
    Save $84 CAD
    HED41B020 - Siemens 20 Amp 1 Pole 277 Volt Bolt-On Molded Case Circuit Breaker
    HED41B020 - Siemens - Molded Case Circuit Breaker
    Bolt On - 20 Amp - 1 Pole - 277 Volt
    Siemens/ITE
    CQD150 - Siemens - Molded Case Circuit Breaker
    CQD150 - Siemens - Molded Case Circuit Breaker
    Feed Thru - 50 Amp - 1 Pole - 277 Volt
    Siemens / ITE
    THED113015WL - GE 15 Amp 1 Pole 277 Volt Molded Case Circuit Breaker
    THED113015WL - GE - Molded Case Circuit Breaker
    Feed-Thru - 15 Amp - 1 Pole - 277 Volt
    GE
    Sale
    FD1030L - Eaton - Molded Case Circuit Breaker
    FD1030L (277V)- Eaton - Molded Case Circuit Breaker
    Feed-Thru - 30 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    Save $100 CAD
    Sold Out
    FD1025L - Eaton - Molded Case Circuit Breaker
    FD1025L (277V)- Eaton - Molded Case Circuit Breaker
    Feed-Thru - 25 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    Save $100 CAD
    Sale
    FD1020L - Eaton - Molded Case Circuit Breaker
    FD1020L (277V) - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 20 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    Save $100 CAD
    Sale
    FD1015L - Eaton - Molded Case Circuit Breaker
    FD1015L (277V) - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 15 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    Save $100 CAD
    EHD1015L - Eaton - Molded Case Circuit Breaker
    EHD1015L - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 12 Amp - 1 Pole - 277 Volt
    Eaton Cutler-Hammer
    THED113025WL - General Electrics - Molded Case Circuit Breakers
    THED113025WL - General Electrics - Molded Case Circuit Breakers
    Feed-Thru - 25 Amp - 1 Pole - 277 V
    GE
    TEYF130 - General Electrics - Molded Case Circuit Breakers
    TEYF130 - General Electrics - Molded Case Circuit Breakers
    Bolt-On - 30 Amp - 1 Pole - 277 V
    GE
    TEY1100 - General Electrics - Molded Case Circuit Breakers
    TEY1100 - General Electrics - Molded Case Circuit Breakers
    Bolt-On - 100 Amp - 1 Pole - 277 V
    GE
    TEYF115 - General Electrics - Molded Case Circuit Breakers
    TEYF115 - General Electrics - Molded Case Circuit Breakers
    Bolt-On - 15 Amp - 1 Pole - 277 V
    GE
    TEY170 - General Electrics - Molded Case Circuit Breakers
    TEY170 - General Electrics - Molded Case Circuit Breakers
    Bolt-On - 70 Amp - 1 Pole - 277 V
    GE
    TED113045WL - General Electrics - Molded Case Circuit Breakers
    TED113045WL - General Electrics - Molded Case Circuit Breakers
    Feed-Thru - 45 Amp - 1 Pole - 277 V
    GE
    NEB1B070B - Siemens - Molded Case
    NEB1B070B - Siemens - Molded Case
    Siemens
    NEB1B060B - Siemens - Molded Case
    NEB1B060B - Siemens - Molded Case
    Siemens
    NEB1B045B - Siemens - Molded Case
    NEB1B045B - Siemens - Molded Case
    Siemens
    NEB1B040B - Siemens - Molded Case
    NEB1B040B - Siemens - Molded Case
    Siemens
    NEB1B035B - Siemens - Molded Case
    NEB1B035B - Siemens - Molded Case
    Siemens
    NEB1B025B - Siemens - Molded Case
    NEB1B025B - Siemens - Molded Case
    Siemens
    HED41B045L - Siemens - Molded Case
    HED41B045L - Siemens - Molded Case
    Feed-Thru - 45 Amp - 1 Pole - 277 V
    Siemens
    HED41B025L - Siemens - Molded Case
    HED41B025L - Siemens - Molded Case
    Feed-Thru - 25 Amp - 1 Pole - 277 V
    Siemens
    HEB1B070B - Siemens - Molded Case
    HEB1B070B - Siemens - Molded Case
    Bolt-On - 70 Amp - 1 Pole - 277 V
    Siemens
    HEB1B060B - Siemens - Molded Case
    HEB1B060B - Siemens - Molded Case
    Bolt-On - 60 Amp - 1 Pole - 277 V
    Siemens
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