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  • Trusted Seller
    SIEMENS CIRCUIT BREAKER 5ST3011-0HG ***NEW

    SIEMENS CIRCUIT BREAKER 5ST3011-0HG ***NEW IN BOX**

    • Manufacturer: Siemens

    All parts ordered before 3:30 pm (EST) typically ship same day via UPS, FedEx, or USPS! If the order is placed after 3:30 pm and you still would like it send out same day, feel free to reach out to us and we will...

    $70 USD
    Muskegon, MI
  • Trusted Seller
    Siemens Circuit Breaker, 5SY61 MCB

    Siemens Circuit Breaker, 5SY61 MCB C10 5ST3010 AS

    • Manufacturer: Siemens

    Came from working unit 30 day warranty Wr30 Bin 4 Mpn: 5SY61 | Number of poles: 1 | Voltage rating: 277V

    $10 USD
    Muskegon, MI
  • Trusted Seller
    Siemens 5ST3 665-1HG Bus Bar

    Siemens 5ST3 665-1HG Bus Bar

    • Manufacturer: Siemens

    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 auction close. Your purchase includes a 30 d...

    $20 USD
    Suwanee, GA
  • Siemens 5SY41 MCB A6 Circuit

    Siemens 5SY41 MCB A6 Circuit Breaker w/5ST3010AS Auxiliary Circuit. 4B-51

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $23 USD
    Duncan, SC
  • Siemens 5SY41 MCB A2 Circuit

    Siemens 5SY41 MCB A2 Circuit Breaker w/5ST3010 AS Auxiliary Switch. 4B-51

    • Manufacturer: Siemens

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $23 USD
    Duncan, SC
  • 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 ST 201M K10A Single

    ABB ST 201M K10A Single Pole Circuit Breaker *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
    Mersen ST1000PVM, Surge Trap, 1000VDC

    Mersen ST1000PVM, Surge Trap, 1000VDC SURGE PROTECTIVE DEVICE - NEW-B

    • Manufacturer: Mersen/Ferraz/Gould-Shawmut

    THIS LISTING IS FOR ONE: Mersen ST100PVM Surge Trap SURGE PROTECTIVE DEVICE SPOLE, 1000VDC **NEW IN BOX** ***Stock picture may vary from item shipped***

    $225 USD
    North Hampton, NH
  • Trusted Seller
    FP-50 600V 1600A MO/ST Air

    FP-50 600V 1600A MO/ST Air Breaker

    • Manufacturer: Federal Pacific

    Federal Pacific FP-50 low voltage power circuit breaker; 600 volts, 1600 amps. Manually operated, stationary mount In cell, TD1 trip device, instantaneous function. Used electrically OK.

    $4,500 USD
    Fridley, MN
  • Trusted Seller
    K-1600 ITE 1600A 600V MO/ST

    K-1600 ITE 1600A 600V MO/ST Air Breaker LI

    • Manufacturer: ITE

    ITE K-1600 Power Circuit Breaker; 1600 amp, red insulators. OD-3 trip with LI functions. Manually-operated, stationary. Used electrically OK. EMSCO #AB-2014-20404 LOC: AB7-P3

    $1,500 USD
    Fridley, MN
  • Trusted Seller
    FP50 FPE 2000A 600V MO/ST

    FP50 FPE 2000A 600V MO/ST Air Breaker LI

    • Manufacturer: Federal Pacific

    Federal Pacific FP-50 low voltage power circuit breaker; 2000 amp frame, 400-350-300-250 trip, 600 volt. Manually operated, Stationary "LI" functions. Used Electrically OK. EMSCO #AB-2014-20425 Loc: AB7-S3

    $3,000 USD
    Fridley, MN
  • Trusted Seller
    K-1600 ITE 1600A 600V MO/ST

    K-1600 ITE 1600A 600V MO/ST Air Breaker LI

    • Manufacturer: ITE

    ITE K-1600 Power Circuit Breaker; 1600 amp, red insulators. OD-3 trip with LI functions, Manually-operated, stationary. Used electrically OK. EMSCO # AB-2014-20403 LOC: AB7-P3

    $1,500 USD
    Fridley, MN
  • Trusted Seller
    FP50 FPE 2000A 600V MO/ST

    FP50 FPE 2000A 600V MO/ST Air Breaker LI

    • Manufacturer: Federal Pacific

    Federal Pacific FP-50 low voltage power circuit breaker; 2000 amp frame, 225-200-175-150 trip, 600 volt. Manually operated, stationary "LI" functions. Used Electrically OK. EMSCO #AB-2014-20423 Loc: AB7-S3

    $3,000 USD
    Fridley, MN
  • Trusted Seller
    K-1600 ITE 1600A 600V EO/ST

    K-1600 ITE 1600A 600V EO/ST Air Breaker LI

    • Manufacturer: ITE

    ITE K-1600 Power Circuit Breaker; 1600 amp. Red insulators, OD-3 trip with L-I functions, Electrically operated, stationary. Used Electrically OK. EMSCO #AB-2014-20375 LOC: AB7-N3

    $2,500 USD
    Fridley, MN
  • Trusted Seller
    K-1600 ITE 1600A 600V EO/ST

    K-1600 ITE 1600A 600V EO/ST Air Breaker LI

    • Manufacturer: ITE

    ITE K-1600 Power Circuit Breaker; 1600 amp. Electrically operated, stationary, OD-3 trip with LI functions. Used electrically OK. EMSCO #AB-2014-20374 LOC: AB7-N3

    $2,500 USD
    Fridley, MN
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Overview

Circuit breakers are essential safety devices that protect electrical circuits from damage caused by overloads or short circuits. They automatically interrupt the flow of electricity when a fault is detected, preventing potential fires and equipment damage. Circuit breakers are used in residential, commercial, and industrial settings to ensure electrical safety and reliability.

FAQ

What should I consider when buying a used circuit breaker?

Check the breaker’s amperage rating, compatibility with your electrical system, and overall condition. Ensure it has been tested and certified for safety.

How do I ensure the circuit breaker is shipped safely to my location?

Use a transport service that specializes in delicate electrical components. Ensure the breaker is well-packaged and cushioned to prevent damage during transit.

What is the maintenance schedule for a circuit breaker?

Regular maintenance includes visual inspections for signs of wear or damage, testing for proper operation, and cleaning any dust or debris from the breaker. Consult the manufacturer’s manual for detailed maintenance intervals.