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Used ABB Miniature Circuit Breakers (Mcb) in Georgia, USA

  • Trusted Seller
    ABB SU 201M-C20 Circuit Breaker

    ABB SU 201M-C20 Circuit Breaker 20A *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $35 USD
    Suwanee, GA
  • Trusted Seller
    ABB SU 201M-C20 Circuit Breaker

    ABB SU 201M-C20 Circuit Breaker 20A *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $40 USD
    Suwanee, GA
  • Trusted Seller
    ABB ST201M-K2 Single Pole Circuit

    ABB ST201M-K2 Single Pole Circuit Breaker, Qty 10 *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $220 USD
    Suwanee, GA
  • Trusted Seller
    ABB SU 201M C20A 20A

    ABB SU 201M C20A 20A Circuit Breaker Single Pole *NEW*

    • Manufacturer: ABB

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $30 USD
    Suwanee, GA

Overview

Miniature circuit breakers (MCBs) are compact protective switches that interrupt electrical flow in low‑voltage circuits when overloads or short circuits occur. Widely used in residential, commercial and light industrial panels, they offer resettable protection and come in single‑ to multi‑pole versions, various current ratings, breaking capacities and trip curves. MCBs typically mount on DIN rails and use thermal‑magnetic mechanisms; select units that match local standards, busbar size and application requirements.

FAQ

What should I check when buying an MCB?

Verify the nominal current (In), breaking capacity (kA), trip curve (B, C, D), number of poles, mounting type (DIN rail), and compliance with local standards (IEC/UL). Check physical condition, brand reputation and whether spare parts or datasheets are available.

How should MCBs be packed and shipped safely?

Ship in original or padded boxes to protect terminals and housing. Secure against moisture and vibration, label fragile electrical components, and use a carrier familiar with electrical goods. Include compliance certificates for customs if shipping internationally.

What routine maintenance or testing do MCBs need?

Perform visual inspections, tighten terminal connections to torque specs, cycle switches periodically, and conduct insulation and trip tests with appropriate equipment. Replace units showing overheating, physical damage, or inconsistent trips.