Circuit Breakers

A circuit breaker will interrupt the flow of current in an electrical circuit, safeguarding surrounding electrical components and wiring by preventing circuit overloads and short circuits.

a.k.a. MCB, MCCB, molded case breaker, supplementary protection, UL1077, UL489, UL508, MMP, manual motor protector

 

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  • weg-umbw-489-2p-cln_2__35020.jpg

    Weg

    UMBW-4D2-60

    14048887, Replacement for UMBW-4D2-63 (14363202)

    MCB, UL489, 2-Pole, D-Curve, 60 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-1077-2p-cln_14__90677.jpg

    Weg

    UMBW-1C2-60

    13986447, Replacement for UMBW-1B2-60 (139864450), UMBW-1B2-63 (14353112) and UMBW-1C2-63 (14360138)

    MCB, UL1077, 2-Pole, C-Curve, 60 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-1077-2p-cln_15__95841.jpg

    Weg

    UMBW-1C2-15

    14359997, Replacement for UMBW-1B2-15 (14361809), UMBW-1B2-16 (14351841) and UMBW-1C2-16 (13915499)

    MCB, UL1077, 2-Pole, C-Curve, 15 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • noark_-_m1h_-_2_pole_-_mccb_14__24262.jpg

    Noark

    M1H15T22L

    1102303

    Molded Case Circuit Breaker, MCCB, UL489, M1H, 150 A Frame Size, 150kA @ 240VAC/100kA @ 480VAC, 15 Amp, Thermal Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1H Series

  • noark_-_m1_-_all_amp_-_2_pole_3__00158.jpg

    Noark

    M1N15T22L

    1102290

    Molded Case Circuit Breaker, MCCB, UL489, M1N, 150 A Frame Size, 100kA @ 240VAC / 65kA @ 480VAC, 15 Amp, Thermal-Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1N Series

  • noark_-_m1h_-_3_pole_-_mccb_2__58726.jpg

    Noark

    M1H150T3L

    1102175

    Molded Case Circuit Breaker, MCCB, UL489, M1H, 150 A Frame Size, 150kA @ 240VAC/100kA @ 480VAC, 150 Amp, Thermal-Magnetic Trip, 2-Pole (3-Pole Case), Lug Line/Load Side Connection, EX9M1H Series

  • noark_-_m1_-_all_amp_-_2_pole_13__60415.jpg

    Noark

    M1N80T22L

    1102300

    Molded Case Circuit Breaker, MCCB, UL489, M1N, 150 A Frame Size, 100kA @ 240VAC / 65kA @ 480VAC, 80 Amp, Thermal-Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1N Series

  • noark_-_m1h_-_2_pole_-_mccb_13__56467.jpg

    Noark

    M1H150T22L

    1102169

    Molded Case Circuit Breaker, MCCB, UL489, M1H, 150 A Frame Size, 150kA @ 240VAC/100kA @ 480VAC, 150 Amp, Thermal Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1H Series

  • noark_-_m1_-_all_amp_-_2_pole_2__16570.jpg

    Noark

    M1N150T22L

    1102167

    Molded Case Circuit Breaker, MCCB, UL489, M1N, 150 A Frame Size, 100kA @ 240VAC / 65kA @ 480VAC, 150 Amp, Thermal-Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1N Series

A circuit breaker will interrupt the flow of current in an electrical circuit, safeguarding surrounding electrical components and wiring by preventing circuit overloads and short circuits.

a.k.a. MCB, MCCB, molded case breaker, supplementary protection, UL1077, UL489, UL508, MMP, manual motor protector