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_14__75171.jpg

    Weg

    UMBW-4C2-13

    13646579, Replacement for UMBW-4B2-12 (14360539), UMBW-4B2-13 (14360541) and UMBW-4C2-12 (14362035)

    MCB, UL489, 2-Pole, C-Curve, 13 Amp, 277/480VAC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series This is the Recommended Replacement for UMBW-4B2-12 (14360539), UMBW-4B2-13 (14360541) and UMBW-4C2-12 (14362035)

  • weg-umbw-1077-2p-cln_11__04764.jpg

    Weg

    UMBW-1C2-1.6

    14361466, Replacement for UMBW-1B2-1.6 (14361734)

    MCB, UL1077, 2-Pole, C-Curve, 1.6 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-489-2p-cln_15__59171.jpg

    Weg

    UMBW-4C2-1.6

    14364079, Replacement for UMBW-4B2-1.6 (14363939)

    MCB, UL489, 2-Pole, C-Curve, 1.6 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-1077-2p-cln_12__70184.jpg

    Weg

    UMBW-1C2-1.5

    14359617, Replacement for UMBW-1B2-1.5 (14361733)

    MCB, UL1077, 2-Pole, C-Curve, 1.5 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-489-2p-cln_16__06534.jpg

    Weg

    UMBW-4C2-1.5

    14362029, Replacement for UMBW-4B2-1.5 (14360497)

    MCB, UL489, 2-Pole, C-Curve, 1.5 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-1077-2p-cln_13__50658.jpg

    Weg

    UMBW-1C2-1.2

    14361898, Replacement for UMBW-1B2-1.2 (14361545)

    MCB, UL1077, 2-Pole, C-Curve, 1.2 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • weg-umbw-489-2p-cln_17__07489.jpg

    Weg

    UMBW-4C2-1.2

    14364078, Replacement for UMBW-4B2-1.2 (14363938)

    MCB, UL489, 2-Pole, C-Curve, 1.2 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • noark_-_m1s150t22l_-_mccb__68588.jpg

    Noark

    M1S150T22L

    1102165

    MCCB, UL489, M1S, 2 Pole, 150 Amp (150A), 50kA @ 240VAC, 35kA @ 480VAC, 14kA @ 600VAC, 20kA @ 600VDC, 150 A Frame Size, Adjustable Thermal/Fixed Magnetic Trip, Lug Line /Load Side Connection, Molded Case Circuit Breaker

  • weg-umbw-489-2p-cln_1__48126.jpg

    Weg

    UMBW-4D2-8

    14363204, Replacement for UMBW-4D2-7 (14363203)

    MCB, UL489, 2-Pole, D-Curve, 8 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • 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

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