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

 

Style:
Product Price Rating Action
  • Available Now!
    doepke_2c05_primary.png
    Available Now!

    Doepke

    2D20UL

    Circuit Breaker, 2-Pole, D-Curve, 20 Amp, UL489, 10kA, Branch Circuit Protection, Molded Case

  • Available Now!
    doepke_2c05_primary.png
    Available Now!

    Doepke

    2D15UL

    This is the Recommended Replacement for 2DU15L | Limited Stock Savings: 2 units available at this price

    Circuit Breaker, 2-Pole, D-Curve, 15 Amp, UL489, 10kA, Branch Circuit Protection, Molded Case

  • Available Now!
    abl-ul489-3p-circuitbreak__50644.jpg
    Available Now!

    Doepke

    3D50UL

    Replaced 3DU50L

    MCCB, UL489, 3-Pole, D-Curve, 50 Amp, 10kA, 240VAC, 50/60Hz, 10kA Short Circuit Interrupting Capacity Protection, DIN Rail Mounting, 17.5mm Width, Thermal Magnetic, Miniature Molded Case Circuit Breaker, IP20

  • Available Now!
    weg-umbw-489-2p-cln_7__07929.jpg
    Available Now!

    Weg

    UMBW-4D2-15

    14363103, Replacement for UMBW-4D2-16 (13642042)

    MCB, UL489, 2-Pole, D-Curve, 15 Amp, 277/480VAC, 125VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • Available Now!
    weg-umbw-1077-2p-cln_3__82759.jpg
    Available Now!

    Weg

    UMBW-1D2-60

    13986548, Replaces UMBW-1D2-63, 14361182

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

  • Available Now!
    weg-umbw-1077-1p-cln_5__08712.jpg
    Available Now!

    Weg

    UMBW-1D1-1.6

    14361461 | Limited Stock Savings: 2 units available at this price

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

  • Available Now!
    weg-umbw-489-1p-cln_13__21416.jpg
    Available Now!

    Weg

    UMBW-4D1-30

    14405683, Replacement for UMBW-4D1-32 (13642024)

    MCB, UL489, 1-Pole, D-Curve, 30 Amp, 120VAC/60VDC, 10kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • Available Now!
    weg-umbw-1077-3p-cln_11__37886.jpg
    Available Now!

    Weg

    UMBW-1C3-30

    14360288, Replacement for UMBW-1B3-30 (14353317), UMBW-1B3-32 (14353359) and UMBW-1C3-32 (14360290), Advertised Pricing Limited to MWA Stock! | Limited Stock Savings: 32 units available at this price

    MCB, UL1077, 3-Pole, C-Curve, 32 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • Available Now!
    weg-umbw-1077-3p-cln_12__79939.jpg
    Available Now!

    Weg

    UMBW-1C3-15

    14360249, Replacement for UMBW-1B3-15 (14353254) , UMBW-1B3-16 (14353257) and UMBW-1C3-16 (14360250)

    MCB, UL1077, 3-Pole, C-Curve, 15 Amp, 277/480VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series This is the Recommended Replacement for UMBW-1B3-15 (14353254) , UMBW-1B3-16 (14353257) and UMBW-1C3-16 (14360250)

  • Available Now!
    lsis_ute100n_3pole_front-gen_7__83863.jpg
    Available Now!

    LS Electric

    02050067UL

    2050067UL, UTE100N FTU 20A 3P LL UL | Limited Stock Savings: 1 unit available at this price

    MCCB, 3-Pole, 20 Amp, 35ka@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

  • Available Now!
    weg-umbw-1077-2p-cln_16__20167.jpg
    Available Now!

    Weg

    UMBW-1D2-30

    14361101, Replacement for UMBW-1D2-32 (14361102) | Limited Stock Savings: 1 unit available at this price

    MCB, UL1077, 2-Pole, D-Curve, 30 Amp, 277/480Y VAC, 5kA, Thermal-Magnetic Miniature Circuit Breaker, IP20, UMBW Series

  • Available Now!
    cg_gmb63_2p_1_2__34220.jpg
    Available Now!

    Carlo Gavazzi

    GMB632PC5

    Minimum Order 1 & Advertised Pricing is Limited to Available Stock Only! Then the Minimum will be 6 Pieces. | Limited Stock Savings: 5 units available at this price

    MCB, UL489, 2 Pole, C Curve, 5 Amp, 240VAC, 60/125VDC, 10kA, Lug Terminals, DIN Rail Mounting, Thermal-Magnetic Miniature Circuit Breaker, GMB63 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