Miniature Circuit Breakers

Miniature Circuit Breakers
Miniature Circuit Breakers (MCBs) are UL489 Listed and can be used for branch protection as the primary overcurrent device. Supplementary Protectors are UL 1077 Recognized and designed for supplemental protection within a control panel, appliance, or other electrical equipment. MCBs and supplementary protectors have fixed trip settings and do not require replacement upon being tripped, and instead they can be reset manually and reused.
    Shop All MCB's
    UL489 & UL1077 MCBs
    1 to 63A Models
    B, C and D Trip Curves
    from $5.25

    FMX MCB4
    UL489 MCBs
    1 to 63A Models
    C and D Trip Curves
    from $15

    FMX MCB4 Accessories
    UL489 Trip Devices, Auxiliaries
    & Locking Devices

    from $1

    FMX MCB1
    UL1077 Supplementary Protectors
    1 to 63A Models
    B, C, and D Trip Curves
    from $7

    FMX MCB1 Accessories
    UL1077 Trip Devices, Auxiliaries
    & Locking Devices

    from $0.50

    Chint MCB
    UL1077 Supplementary Protectors
    1 to 63A Models
    B and D Trip Curves
    from $5.25

    Chint MCB Accessories
    UL1077 Trip Devices, Auxiliaries
    & Locking Devices

    from $10.50

    FMX DIN Module Enclosures
    IP65, Plastic
    Mount MCBs or other
    DIN 43880 profile devices
    from $15.45