For more than 40 years, Electrical Supplies Unlimited (ESU) has been a trusted Circuit Breaker Shop in San Diego, serving electricians, contractors, and homeowners with reliable electrical supplies, tools, and equipment. From complete panelboards and circuit breakers to transformers, fuses, and temporary power systems, ESU provides the quality products and expertise needed to get every job done right. Whether it’s a major commercial installation or a simple residential repair, ESU delivers dependable service every time.

ESU proudly buys and sells surplus electrical equipment—including used circuit breakers in San Diego—helping customers save money while supporting sustainability through recycling and reuse. Their extensive inventory features transformers, circuit breakers, panelboards, fuses, and more, all fully inspected and ready for installation. With a constantly updated stock of both new and surplus components, ESU ensures that contractors, maintenance teams, and homeowners always have access to hard-to-find electrical supplies when they need them most.

Backed by decades of industry experience, the ESU team understands the challenges local electricians face and works closely with every customer to provide fast, accurate solutions. Their knowledgeable staff offers honest advice, competitive pricing, and responsive service that keeps San Diego’s electrical systems running safely and smoothly. When you’re looking to buy or sell surplus electrical equipment, ESU is your go-to Circuit Breaker Shop in San Diego for reliable products and expert support.

ESU Inc. carries a large inventory of new, surplus, and recycled electrical supplies for both commercial and residential applications. With a broad client base, they offer the best pricing on used and obsolete electrical transformers, giving customers maximum value for their equipment. Their team is highly knowledgeable, and their mission is to exceed customer expectations with every interaction. Ask around—ESU’s reputation speaks for itself. Or call to experience it firsthand at 858.558.2850.

They purchase most major brands, including Acme, Westinghouse, Cutler Hammer, ITE Siemens, FPE Federal Pacific, Square D, General Electric, and Zinsco. As a fully stocked electrical distributor and wholesaler, ESU maintains a diverse inventory including circuit breakers, transformers, disconnects, panelboards up to 600V, fuses up to 3000 amps, bolt switch pullouts, motor starters and relays, meter sockets, lighting ballasts, metal halide and SOX bulbs, along with Lithonia commercial and residential lighting fixtures.

As transformer and electrical hardware experts, ESU is always ready to help with excess transformer needs or hard-to-find circuit breakers. Call 858.558.2850 to learn how ESU can help.

Your one-stop Circuit Breaker Shop in San Diego—always at your service!