Molded Case Breakers

222 products

    Shop our wide selection molded case (MCCB) circuit breakers. 
    222 products
    HKD3400Y - Eaton Molded Case Circuit Breaker
    HKD3400Y - Eaton - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HKD3400X - Eaton Molded Case Circuit Breaker
    HKD3400X - Eaton - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HKD3400C - Eaton Molded Case Circuit Breaker
    HKD3400C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    TJK636400 - GE - Molded Case Circuit Breaker
    TJK636400 - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    Sale
    TJK436400 - GE - Molded Case Circuit Breaker
    TJK436400 - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    Save $3,690.01 CAD
    Sale
    TJJ436Y400WL - GE - Molded Case Circuit Breaker
    TJJ436Y400WL - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    Save $1,024.01 CAD
    Sale
    TJJ436400 - GE - Molded Case Circuit Breaker
    TJJ436400 - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    Save $4,190.01 CAD
    Sale
    TJD432400 - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 240 Volt
    GE
    Save $2,186.01 CAD
    THJK436400 - GE - Molded Case Circuit Breaker
    THJK436400 - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    HHJXD63B400 - Siemens 400 Amp 3 pole 600 Volt Molded Case Circuit Breaker
    HHJXD63B400 - Siemens - 400 Amp Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    Siemens/ITE
    Sale
    JXD23B400L - Siemens 400 Amp 3 Pole 240 Volt Feed Thru Molded Case Circuit Breaker
    JXD23B400L - Siemens - 400 Amp Molded Case Circuit Breaker
    Bolt-In - 400 Amp - 3 Pole - 240 Volt
    Siemens/ITE
    Save $4,093.01 CAD
    Sale
    JXD22B400L - Siemens 400 Amp 2 Pole 240 Volt Feed Thru Molded Case Circuit Breaker
    JXD22B400L - Siemens - 400 Amp Molded Case Circuit Breaker
    Bolt-In - 400 Amp - 2 Pole - 240 Volt
    Siemens/ITE
    Save $2,017.01 CAD
    Sale
    TJD432400WL - GE 400 Amp Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 240 Volt
    GE
    Save $2,186.01 CAD
    Sale
    LGA36600U33X - Square D 600 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LGA36400U31X - Square D - Molded Case Circuit Breaker
    Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $4,963 CAD
    Sale
    LGA36600U33X - Square D 600 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LGA36400U53X - Square D - Molded Case Circuit Breaker
    Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $690 CAD
    THJK436F000 - General Electric 400 Amp 3 Pole 600 Volt Thermal Magnetic Circuit Breaker
    THJK436F000 - GE - Frame
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    GE
    THJK436400WL - General Electric 400 Amp 3 Pole 600 Volt Thermal Magnetic Circuit Breaker
    THJK436400WL - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    Sale
    LHL26400 - Square D 400 Amp 2 Pole 600 Volt Molded Case Circuit Breaker
    LHL26400 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 2 Pole - 600 Volt
    Schneider Electric
    Save $1,010 CAD
    Sold Out
    LAL36400MB - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LAL36400MB - Square D - Molded Case Circuit Breaker
    Feed-Thru - 600 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Sale
    MGL26400 - Square D 400 Amp 2 Pole 600 Volt Molded Case Circuit Breaker
    MGL26400 - Square D - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 2 Pole - 600 Volt
    Schneider Electric
    Save $560 CAD
    Sale
    LJF36400U31X - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LJF36400U31X - Square D - Molded Case Circuit Breaker
    Bolt On - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $4,660 CAD
    Sale
    PKA36040U31A - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    PKA36040U31A - Square D - Molded Case Circuit Breaker
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $2,893 CAD
    Sold Out
    HKD3400T106W - Eaton - Molded Case Circuit Breaker
    HKD3400T106W - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    TJD422400WL - GE - 400 Amp Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 2 Pole - 240 Volt
    General Electric
    TJD422400 - General Electric 400 Amp 2 Pole 240 Volt Molded Case Circuit Breaker
    TJD422400 - GE - 400 Amp Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 2 Pole - 240 Volt
    General Electric
    Sale
    LJA36400U44X - Square D - Molded Case Circuit Breakers
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $8,912 CAD
    Sale
    LJA36400U43X - Square D 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    LJA36400U43X - Square D - Molded Case Circuit Breakers
    I-Line Plug-In - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Save $3,872 CAD
    HMCP400J5 - Eaton - Molded Case Circuit Breaker
    HMCP400J5 - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    Sold Out
    KD2400F - Eaton - Molded Case Circuit Breaker
    KD2400F - Eaton - Frame
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HMCP400J5C - Eaton - Molded Case Circuit Breaker
    HMCP400J5C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HMCP400G5C - Eaton - Molded Case Circuit Breaker
    HMCP400G5C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HMCP400D5WD09 - Eaton Cutler-Hammer 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    HMCP400D5WD09 - Eaton - 400 Amp Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    TJK636400WL - GE 400 Amp 3 Pole 600 Volt Molded Case Circuit Breaker
    TJK636400WL - GE - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    GE
    SGPP36AT0400 - GE 400 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    SGPP36AT0400 - GE - Molded Case Circuit Breaker
    Bolt-On- 400 Amp - 3 Pole - 600 Volt
    GE
    HMCP400X5W - Eaton - Molded Case Circuit Breaker
    HMCP400X5W - Eaton - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HMCP400L5C - Eaton - Molded Case Circuit Breaker
    HMCP400L5C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HMCP400D5C - Eaton - Molded Case Circuit Breaker
    HMCP400D5C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    HMCP400A5C - Eaton - Molded Case Circuit Breaker
    HMCP400A5C - Eaton - Molded Case Circuit Breaker
    Feed-Thru - 400 Amp - 3 Pole - 600 Volt
    Eaton Cutler-Hammer
    SGLL36AT0400 - GE 400 Amp 3 Pole 600 Volt Bolt-On Molded Case Circuit Breaker
    SGLL36AT0400 - GE - Molded Case Circuit Breaker
    Bolt-On - 400 Amp - 3 Pole - 600 Volt
    GE
    LGL36400U31X - Square D - Molded Case Circuit Breaker
    Feed Thru - 400 Amp - 3 Pole - 600 Volt
    Schneider Electric
    Recently viewed