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Square D circuit breakers are available in countless different configurations. We list hundreds of models in our online catalog, including popular models like the XO120, EDB34030, KA36200, QOB230, and FA34100. If you're having a difficult time finding the exact part you need, call us and we'll help you get the Square D breaker you need, quickly. Keep in mind that we offer same day shipping and free ground shipping on orders of $100 or more.

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Square D is an American manufacturer of equipment used to control and distribute electric power headquartered in Palatine, Illinois.

Square D was founded in 1903 in Detroit, Michigan by Bryson Dexter Horton who is credited with the invention of the safety switch which encased high voltage switches and started the company's main line of business of circuit breakers and encased control panels. In 1991, the company was acquired and became a subsidiary of Schneider Electric. Products and systems developed by the Square D brand are present in all sectors of activity, from circuit breakers to monitoring and control systems. The tertiary and residential building sectors are major consumers of Square D product.

Square D Circuit Breakers

New, used, and obsolete - all come with a 1-year replacement warranty

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* Not all of our inventory is listed on our website. Call us if you can't find what you need.

Square D SK4515 Circuit Breaker

Square D SK4515 - 15 to 100 ampere 3 pole twin mounting assembly; used on fal circuit breaker; mounting height 4.5 inch

Reconditioned: Call for Price

New: Call for Price

Square D SK4516 Circuit Breaker

Square D SK4516 - Mounting assembly type; kal 100 to 225 ampere twin circuit breaker used on; 3 pole(s); mounting height 6 inch

Reconditioned: Call for Price

New: Call for Price

Square D SK4517 Circuit Breaker

Square D SK4517 - 125 to 400 ampere 3 pole single mounting assembly; used on lal circuit breaker; mounting height 6 inch

Reconditioned: Call for Price

New: Call for Price

Square D SMA3630 Circuit Breaker

Square D SMA3630 - 630a 415/240v mld cb

Reconditioned: Call for Price

New: Call for Price

Square D SN100FA Circuit Breaker

Square D SN100FA - Insulated groundable neutral; 100 ampere; conductor material aluminum/copper; (1) 14 to 4 awg (copper) ground conductor size; (1) 14 to 1/0 awg (copper)/(1) 12 to 1/0 awg (aluminum) main conductor; used on nema 1/3r/4/4x/5/12 circuit breaker

Reconditioned: Call for Price

New: Call for Price

Square D SN1200NA Circuit Breaker

Square D SN1200NA - Insulated groundable neutral; 1200 ampere; conductor material aluminum/copper; (1) 4 awg to 350 kcmil (copper) ground conductor size; (4) 3/0 awg to 600 kcmil main conductor; used on nema 1/3r/4/4x/5/12 circuit breaker

Reconditioned: Call for Price

New: Call for Price

Square D SN400LA Circuit Breaker

Square D SN400LA - Insulated groundable neutral; 400 ampere; conductor material aluminum/copper; (1) 4 awg to 300 kcmil (copper/aluminum)/(2) 6 awg to 250 kcmil (copper) ground conductor size; (1) 1 awg to 60...(more)

Reconditioned: Call for Price

New: Call for Price

Square D US24820018 Circuit Breaker

Square D US24820018 - 23 inch l 200 ampere 48 pole two conductor mounting base; used on 240 vac ul489 c60 series circuit breaker; multi 9[t] brand

Reconditioned: Call for Price

New: Call for Price

Square D X6306154 Circuit Breaker

Square D X6306154 - Njnfe36400e20 ckt brkr

Reconditioned: Call for Price

New: Call for Price

Square D XO115 Circuit Breaker

Square D XO115 - 1pole 15amp 120volt xo type square d sqd circuit breaker

Reconditioned: Call for Price

New: Call for Price

We also stock items not listed in our online catalog

Square D Circuit Breakers - New and Obsolete

West Coast Power has been specializing in new, reconditioned and obsolete Square D 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 get all of our products represented in our online catalog - some are often sold before we get a chance to list them. If you don't see it listed, chances are, 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. And we offer price matching on all products - if you find it cheaper elsewhere, call us. Order typically ship the same business day the order was received. Let us get you the Square D Square D Circuit Breakers Circuit Breakers you need, quickly.