circuit breaker Electrical Supplies Unlimited buys and sells new Transformers and more for Southcrest area in San Diego and surrounding areas including National City, Chula Vista, Mountain View, Logan  Heights, and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also purchase your used Transformers.

Welcome to Electrical Supplies Unlimited, your go-to source for electrical solutions in Southcrest, San Diego. We specialize in supplying and stocking a comprehensive range of new and used power transformers, circuit breakers, panel boards, and various other electrical supplies. Our commitment to quality and reliability makes us the preferred choice for electricians and electrical companies. Whether you're undertaking a new project or need to replace essential components, Electrical Supplies Unlimited ensures you have access to a diverse inventory that meets your specific requirements. With our focus on customer satisfaction, we strive to provide not only top-notch products but also expert guidance to support your electrical endeavors. Trust Electrical Supplies Unlimited to power your projects with quality and precision.

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.

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 Southcrest, 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!