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-1077-1p-cln_18__78300.jpg

    Weg

    UMBW-1B1-1.6

    14361509, Limited Availability, Replaced by UMBW-1C1-1.6 (14361872)

    MCB, UL1077, 1-Pole, B-Curve, 1.6 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-489-1p-cln_8__01071.jpg

    Weg

    UMBW-4C1-1.6

    14363947, Replacement for UMBW-4B1-1.6 (14363717)

    MCB, UL489, 1-Pole, C-Curve, 1.6 Amp, 277VAC/60VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-489-3p-cln_3__47238.jpg

    Weg

    UMBW-4D3-13

    14363258, Replacement for UMBW-4D3-12 (14363207)

    MCB, UL489, 3-Pole, D-Curve, 13 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-1077-1p-cln_19__31635.jpg

    Weg

    UMBW-1B1-1.5

    14361508, Limited Availability, Replaced by UMBW-1C1-1.5 (14353525)

    MCB, UL1077, 1-Pole, B-Curve, 1.5 Amp, 277VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • noark_-_m1_-_all_amp_-_3_pole_24__68277.jpg

    Noark

    M1N90T3L

    1100051

    Molded Case Circuit Breaker, MCCB, UL489, M1N, 150 A Frame Size, 100kA @ 240VAC / 65kA @ 480VAC, 90 Amp, Thermal-Magnetic Trip, 3-Pole, Lug Line/Load Side Connection, EX9M1N Series

  • weg-umbw-489-1p-cln_9__25597.jpg

    Weg

    UMBW-4C1-1.5

    14363611, Replacement for UMBW-4B1-1.5 (14362323)

    MCB, UL489, 1-Pole, C-Curve, 1.5 Amp, 277VAC/60VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • lsis_ute100n_3pole_front-gen__85941.jpg

    LS Electric

    02050260UL

    2050260UL, UTE100E FTU 45A 3P LL UL

    MCCB, 3-Pole, 45 Amp, 25kA@480VAC, Fixed Thermal/Magnetic, Lugs Line/Load Side, 5.12 x 2.99 x 3.44" (HWD), Susol UL MCCB UTE100 Series, UL Listed, Molded Case Circuit Breaker

  • noark_-_m1_-_all_amp_-_2_pole_4__46408.jpg

    Noark

    M1N20T22L

    1102291

    Molded Case Circuit Breaker, MCCB, UL489, M1N, 150 A Frame Size, 100kA @ 240VAC / 65kA @ 480VAC, 20 Amp, Thermal-Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1N Series

  • noark_-_m1_-_all_amp_-_2_pole_14__16092.jpg

    Noark

    M1N90T22L

    1102301

    Molded Case Circuit Breaker, MCCB, UL489, M1N, 150 A Frame Size, 100kA @ 240VAC / 65kA @ 480VAC, 90 Amp, Thermal-Magnetic Trip, 2-Pole, Lug Line/Load Side Connection, EX9M1N Series

  • 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

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