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Used master

  • Master pack circuit breaker 2000

    Master pack circuit breaker 2000 Amp NW20N

    • Manufacturer: Square D

    The Master pack circuit breaker 2000 Amp NW20N is a high-quality electrical device designed for industrial and commercial applications. With a maximum current rating of 2000 Amp, this circuit breaker from AMP is ...

    $2,000 USD
    Houston, TX
  • Trusted Seller
    MASTER LOCK Circuit Breaker Lockout

    MASTER LOCK Circuit Breaker Lockout 491B GRIP TIGHT #119105

    • Manufacturer: MASTER LOCK

    Circuit Breaker Lockout- Tall or Wide Toggle 491B replaces 491 & 494 Expedited shipping services are available This piece is located at Ideal Machinery, Inc. on our showroom floor. Located at: 10230 N. Holly Rd...

    $14 USD
    Warehouse
  • Trusted Seller
    Circuit Breaker JDL36250 Square D

    Circuit Breaker JDL36250 Square D 3 Pole 250 Amp 600V ''NEW In Open Box''

    • Manufacturer: Square D
    • Model: JD250

    MD MACHINERY CENTER HIGH QUALITY, GOOD PRICING, FAST SHIPPING! QUESTIONS CAN BE ANSWERED BY CALLING 786/277/7843, INCLUDING PAYMENT AND SHIPPING METHODS. WE HAVE GREAT SHIPPING PRICES AND WILL BE HAPPY TO MAKE A ...

    $995 USD
    Miami, FL
  • Trusted Seller
    ETA 2210-S211-P1F2-H111-4A Magnetic Circuit Breaker

    ETA 2210-S211-P1F2-H111-4A Magnetic Circuit Breaker

    • Manufacturer: ETA

    ETA 2210-S211-P1F2-H111-4A Magnetic Circuit Breaker Magnetic Circuit Breaker Our company specialized in ABB: AC800M Series Modules, DSQC Series for Industrial Robots, Bailey INFI 90,800xA, Advant OCS with Master ...

    Fujian, China
  • Trusted Seller
    SQUARE NW16H1 WA4ECR43F9DGFFWXJA Circuit Breaker

    SQUARE NW16H1 WA4ECR43F9DGFFWXJA Circuit Breaker

    • Manufacturer: SQUARE

    Circuit Breaker SQUARE NW16H1 WA4ECR43F9DGFFWXJA Circuit Breaker In stock ready to ship Get in touch today for a quick price. All parts come with a 12 months warranty We Can Offer： 1.PLC programmable controller (...

    Fujian, China
  • Trusted Seller
    SQUARE NW16H1 WA4EER43A9DGFFWXJA Circuit Breaker

    SQUARE NW16H1 WA4EER43A9DGFFWXJA Circuit Breaker

    • Manufacturer: SQUARE

    Circuit Breaker SQUARE NW16H1 WA4EER43A9DGFFWXJA Circuit Breaker In stock ready to ship Get in touch today for a quick price. All parts come with a 12 months warranty We Can Offer： 1.PLC programmable controller (...

    Fujian, China
  • Trusted Seller
    SIEMENS 3VU1640-1LS00 circuit breakers

    SIEMENS 3VU1640-1LS00 circuit breakers

    • Manufacturer: Siemens

    circuit breakers SIEMENS 3VU1640-1LS00 Siemens 3VU Motor protection circuit breakers Circuit breaker 45...63 A for line protection with screw terminal Icu: 415 V 35 kA auxiliary contact: 1 NO + 1 NC About 3VU1640...

    Fujian, China

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.