Welcome to ESU, your trusted partner in electrical supplies, specializing in the purchase and sale of new, used, and surplus circuit breakers across downtown San Diego. With an unwavering commitment to quality and customer satisfaction, we stand as your go-to destination for all your circuit breaker needs. Whether you're looking to upgrade your electrical systems, offload surplus equipment, or find budget-friendly solutions, ESU has you covered. Our comprehensive range of circuit breakers spans various brands and specifications, ensuring you have access to the right products that meet your electrical requirements. With ESU's expertise, turning your surplus into value or sourcing top-tier circuit breakers has never been easier. Contact us today and experience the reliability, affordability, and excellence that ESU brings to the electrical supplies industry.

Electrical Supplies Unlimited, is your premier electrical supplies company in downtown San Diego, offering a unique blend of transformer and circuit breaker solutions that cater to your specific needs. As industry leaders, we specialize in both buying and selling of power transformers and circuit breakers, whether they're new, used, or surplus. At ESU, we understand the ever-evolving electrical landscape, and our goal is to provide you with tailored solutions that optimize your systems and operations. Our extensive inventory and expertise allow us to deliver the right circuit breakers for your projects, ensuring both safety and functionality. Whether you're an individual, business, or contractor, ESU offers a reliable platform to acquire or offload circuit breakers seamlessly. Discover the convenience, versatility, and customer-centered approach that make ESU your ultimate partner in electrical supplies.

ESU Inc has been in the electrical supply business for over 30 years. We have a large inventory of new, surplus and recycled electrical supplies both for the commercial and residential markets.  We can offer the best pricing on your used and obsolete Electrical Transformers as our large client base allows us to give you the highest price possible.

Our staff is very knowledgeable and our mission is to ensure that our customers expectations are exceeded. Ask around, our reputation is what makes us! Or just call to find out yourself at 858.558.2850.

What sets us apart is our unique offering – we not only provide top-notch new equipment, but we also buy used and surplus electric power transformers, circuit breakers, and panelboards. Our commitment to sustainability and cost-effectiveness ensures that both customers and businesses can find the solutions they need. Whether you're looking to purchase new equipment or looking to offload surplus items, Electrical Supplies Unlimited is your trusted partner. Explore our diverse inventory and experience the convenience of a one-stop shop for all your electrical supply needs.

We purchase most major brands including Acme, Westinghouse, Cutler Hammer, ITE Siemens, FPE  Federal Pacific, Square D, General Electric and Zinsco products. We are a fully stocked Electrical Distributor and Electrical Wholesaler with many different lines in stock. If you have excess Transformer inventory for sale in the 92121 zip code area, give ESU a call!

Our inventory consists of a large selection of Circuit Breakers, Transformers, Disconnects, Panelboards to 600v, Fuses up to 3000 Amps, Bolt Switch Pullouts, Motor Starters and Relays, Meter sockets, Lighting ballasts, Metal Halide and Sox bulbs. We also carry Lithonia Commercial and residential lighting fixtures as well.

We are transformer and electrical hardware experts. Do not hesitate to call us at 858.558.2850 to find out how ESU can help you with your excess Transformer needs.

Your one stop go-to guys. Always at your service!