**Tariff Update: Select Manufacturer Tariffs Will Begin on April 14th, 2025** Read the latest!

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

 

Build Your Complete VFD Solution
Create a complete system with recommendations on AC drives and compatible components like motors, circuit breakers, and protection equipment.
Style:
Product Price Rating Action
  • Available Now!
    noark-b1e-3p-circuitbreak__95449.jpg
    Available Now!

    Noark

    B1E3D20

    Miniature Circuit Breaker, UL1077, 3-Poles, D-Curve, 20A, 5kA, 480Y/277VAC, Supplementary Protection

  • Available Now!
    weg_umbw_1077_3pole_11__36915.jpg
    Available Now!

    Weg

    UMBW-1C3-50

    MCB, UL1077, 3-Pole, C-Curve, 50 Amp, 277/480Y VAC, 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

    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)

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