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Zinsco Circuit Breakers

Replacement Zinsco Circuit Breakers - Full 1-year Warranty
Circuit Breaker Service offers a complete line of new, used, and obsolete Zinsco circuit breakers, including popular models like the R3820, RC3820, RC3830, QCAL100, and Q20. Browse our site and pick up the Zinsco breakers and other electrical hardware you need, quick. Need it shipped fast? Call us to check stock and get an accurate quote.

To quickly check stock, get pricing or place an order, call 1-888-732-5250 or

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* Not all of our available inventory is listed on our website. Call us if you don't see what you need listed in our online catalog. We likely have what you need in stock.

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Genuine Zinsco Circuit Breakers - Full 1-year Replacement Warranty
Circuit Breaker Service has been specializing in new, used, reconditioned, refurbished, and obsolete Zinsco Circuit Breakers and other electrical supply products for over 20 years. If you have old or hard-to-find circuit breakers, motor controls, bus plugs, or other electrical distribution products that need replacing give us a call or request a quote. We have new, used and obsolete products coming in all the time.

Due to the nature of the reconditioning process, we don't always get a chance to post all of our inventory in our online catalog - many products are often sold before we get a chance to list them. Just because you don't see it listed doesn't mean we don't have it. We likely have it in stock or can get it for you fast - and all of our reconditioned products carry the same 1-year warranty that come with our new products. We offer price matching on all products - if you find it cheaper elsewhere, call us. We typically ship orders the same business day the order was received, so you get the Zinsco circuit breaker you need fast. contact us - customer service is our #1 priority.

Circuit Breaker Service - Your Source for Zinsco Circuit Breakers and Electrical Hardware Products. Circuit Breaker Service is not an authorized or licensed Zinsco dealer, distributor, or reseller - there is no affiliation between Zinsco and Circuit Breaker Service. Used, surplus, and reconditioned Zinsco products, may not be subject to the original Zinsco factory warranty or repair agreements. Circuit Breaker Service does, however, offer a full 1-year replacement warranty on all products we sell, new or used.