Siemens Circuit Breakers
Circuit specializes in providing our customers with quality new, used, reconditioned and obsolete circuit breakers. We also offer information on suppliers and manufacturers for circuit breakers, plus electrical accessories.

                Chances are - if you want it, we've got it!

Browse our comprehensive online circuit breaker listings to find great deals on a wide variety of electrical circuit breakers, and electrical accessories. Whether you're looking for GE breaker or other circuit breaker products by Murray and Wadsworth, our convenient online search pages makes it easy for you to find what you need - quickly.

Shop online and enjoy huge savings on General Electric-GE, Square D, ITE, Westinghouse, Zinsco, Federal Pacific-FPE, Murray, Cutler Hammer, Crouse Hinds, Challenger, Wadsworth, and more.

Browse our comprehensive online inventory to find quality circuit breakers from all of your favorite manufacturers.

We specialize in hard-to-find circuit breakers, including obsolete circuit breakers that you will not be able to find anywhere else on the Internet. From Siemens breakers to Cutler Hammer, FPE, General Electric and ITE to a wide variety of Square D breakers and even a large selection of rare or uncommon items, such as Westinghouse breakers, has you covered.

We also provide detailed information about circuit breaker panels, circuit breaker manufacturers, plus advice on how to replace and install circuit breakers and where to buy new, used and surplus circuit breakers.
Looking for great deals on quality, name brand electrical circuit breakers? can help you find the circuit breaker you need.

Offering a wide variety of Residential Plug On, Commercial Industrial Bolt On types of circuit breakers from 10 to 4000 amp.
Circuit Breakers - New, Used Obsolete & Reconditioned

Seimens / ITE / Gould - New, Used Obsolete & Reconditioned
Siemens ITE Gould
New, Used, Obsolete & Reconditioned
Circuit Breakers
Tested and Certified, Your source for quality new, used, obsolete and refurbished circuit breakers online., Your source for quality new, used, obsolete and refurbished circuit breakers online.
Residential / plug-on circuit breaker
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Circuit breakers such as this are standard in modern domestic and commercial electrical distribution boards.
1. Actuator lever - used to manually trip and reset the circuit breaker.

2. Actuator mechanism - forces the contacts together or apart.

3. Contacts - Allow current to flow when touching and break the flow of current when moved apart.

4. Terminals

5. Bimetallic strip

6. Calibration screw - allows the manufacturer to precisely adjust the trip current of the device after assembly.

7. Solenoid

8. Arc divider / extinguisher
Photograph of the inside of a 10 amp  thermal-magnetic circuit breaker.
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