For more than 40 years, Electrical Supplies Unlimited (ESU) has been a trusted resource for San Diego electricians, contractors, and homeowners seeking reliable electrical supplies, tools, and equipment. From complete panelboards and circuit breakers to fuses, transformers, and temporary power systems, ESU provides the quality products and expertise needed to get the job done right. Whether it’s a large commercial installation or a simple residential repair, customers can count on ESU for dependable service every time.

ESU is San Diego’s leading source for used circuit breakers San Diego, proudly buying and selling surplus electrical equipment to help customers save money while supporting sustainability through recycling and reuse. Their extensive inventory features transformers, circuit breakers, panelboards, fuses, and more—fully inspected and ready for installation. With a constantly updated stock of new and surplus components, ESU ensures that contractors, maintenance teams, and homeowners can always find hard-to-locate 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 deliver the right solutions quickly and efficiently. Their knowledgeable staff takes pride in offering honest advice, competitive pricing, and responsive service that keeps San Diego’s electrical systems running safely and smoothly. Whether you’re looking to buy or sell surplus equipment—especially used circuit breakers in San Diego—ESU is your go-to source for reliable products and expert support.

ESU Inc. maintains a large inventory of new, surplus, and recycled electrical supplies for both commercial and residential markets. With a broad client base, they offer the best pricing on used and obsolete electrical transformers, providing customers with the highest value possible. 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.

ESU purchases 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, their inventory includes a large selection of 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, and Lithonia commercial and residential lighting fixtures.

As transformer and electrical hardware experts, ESU is always ready to assist with your excess transformer needs. Do not hesitate to call 858.558.2850 to learn how ESU can help.

Your one-stop, go-to electrical supply experts—always at your service!