For 40 years ESU offers San Diego Electricians new & used circuit breaker tranformers miramar san diegoCircuit Breakers, Electrical Power Transformers, Fuses, Switches, Plugs and more for San Diego

2024 brings ESU 4 decades of service to Electricians in San Diego. We understand the importance of quality electrical supplies to ensure the safety and reliability of their work. That's where Electrical Supplies Unlimited comes in. As the go-to source for electricians and electrical companies in the San Diego area for 40 years now, we offer a wide range of new and used power transformers, circuit breakers, and other essential electrical supplies. Our commitment to providing top-notch products and excellent customer service means that electricians can rely on us for all their needs. Whether you're a seasoned professional or a newcomer to the field, Electrical Supplies Unlimited is here to support you in delivering top-quality electrical solutions to the San Diego community.


Electrical Supplies Unlimited has been the go-to source for electrical supplies in San Diego, a company you can trust and one that proudly serves electricians and electrical companies with top-notch products and unparalleled expertise. With a rich legacy of 40 years in the industry, we have established ourselves as a trusted supplier, stocking a comprehensive range of new and used power transformers, circuit breakers, panel boards, and various other electrical essentials. Our commitment to excellence is evident in our diverse inventory and our dedication to meeting the unique needs of electricians across San Diego. Whether you're working on a residential project or a large-scale commercial venture, Electrical Supplies Unlimited is here to provide the quality products and personalized service that have been our hallmark for over three decades. Electrical Supplies Unlimited stands as a beacon of reliability for electricians and electrical companies in San Diego, offering a vast selection of electrical supplies for over 30 years. As a seasoned supplier, we take pride in our extensive stock of new and used power transformers, circuit breakers, panel boards, and more, catering to the diverse needs of electricians across the region. Our commitment to providing high-quality products is matched only by our dedication to exceptional customer service. At Electrical Supplies Unlimited, we understand the unique requirements of electricians and electrical projects, and our experienced team is ready to assist you in finding the right solutions. Trust us as your partner in electrical supplies, where decades of expertise meet a commitment to quality that has stood the test of time.

Electrical Supplies Unlimited takes pride in being the premier choice for electricians seeking reliable electrical supplies in San Diego. Our extensive inventory includes new and used power transformers, circuit breakers, and various other essential components. We understand that electricians and electrical companies require top-grade equipment to ensure the safety and efficiency of their work, which is why we make it our mission to provide the best products available. With a focus on customer satisfaction and a dedication to quality, Electrical Supplies Unlimited is the trusted partner for electricians throughout San Diego. When you choose us, you're choosing a company that values your success and is committed to delivering the supplies you need to get the job done right.Electrical Supplies Unlimited, known as ESU, stands as the premier destination for electricians in San Diego seeking top-notch electrical components and supplies. With an unwavering commitment to quality and reliability, ESU provides an extensive inventory of essential electrical equipment, including transformers, circuit breakers, panelboards, fuses, and much more. We understand that electricians and electrician companies require dependable products to ensure safety and efficiency in their projects. ESU goes above and beyond to offer a comprehensive range of electrical supplies that meet and exceed industry standards, ensuring that every job is completed with precision and confidence. Our knowledgeable team is dedicated to assisting electricians in finding the right solutions for their specific needs, and our competitive pricing ensures that quality doesn't come at a premium. When it comes to electrical supplies in San Diego, ESU is the trusted partner that electricians rely on for excellence and reliability.

At ESU, we recognize the critical role that electricians play in powering San Diego's communities and businesses. That's why we've made it our mission to provide them with the highest quality electrical supplies and components available in the market. From transformers that facilitate power distribution to circuit breakers that safeguard against electrical overloads, we offer a wide selection of products that cater to the diverse requirements of electricians and electrician companies in San Diego. Our commitment to delivering not just products, but solutions, is evident in our customer-centric approach and the expert guidance we offer to ensure that each electrician can perform their work efficiently and safely. When it comes to electrical supplies, ESU is the trusted partner that powers the success of San Diego's electricians, one reliable component at a time.

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 are a fully stocked Electrical Distributor and Electrical Wholesaler with many different lines in stock. We specialize in  hard to find items. 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 stock most major brands including General Electric, Hammond Power, ITE Siemens, Cutler Hammer, Square D, FPE Federal Pacific, Pushmatic, Zinsco, Crouse Hinds, Challenger, Westinghouse, Sylvania, and Bryant.

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.

Our Products ESU sells a large and diverse inventory of Electrical Supplies, Electrical Equipment, including Circuit Breakers, Fuses, Transformers, Panelboard switches, Safety switches, Fuseable switches, Meter Sockets, Motor Controllers, Lighting  Ballasts, Bolt switch and much more. We carrier almost all manufacturers including Zinsco, Pushmatic, FPE Federal Pacific, ITE Siemens,  Cutler Hammer, Lutron, Lithonia,, Square D, Challenger and many more. We serve the San Diego and SD County areas and to many other intra and interstate clients. We sell products to fit any requirement or budget. ESU rents Greenlee Wire Pullers, Conduit benders as well as other electrician tools. Talk directly to one of our specialists, Ed, Scott, Kevin or Chris to find out more. So give us a call today at 858.558.2850 and let us serve you

Circuit Breakers Electrical Supplies Unlimited buys and sells new and used Circuit Breakers and more for San Diego County and surrounding areas including Linda Vista, Hillcrest, Kearney Mesa, Clairemont, University City and 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.

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.

Circuit Breakers Electrical Supplies Unlimited is your go-to source for Circuit Breaker electrical supplies in San Diego and surrounding areas. We have a large inventory of most brands of circuit breakers including most amperages and voltages. We carry a large variety of manufacturers, including Zinsco, Federal Pacific FPE, Pushmatic, Bulldog, Cutler, Hammer, ITE Siemens, Square D etc. in our San Diego store. We carry most amperages and voltages. Some examples of what we carry:

20 Amp thru 125 amp Zinsco breakers
20 amp through 1200 amp 480 volt Siemens breakers 3 phase and single phase
15 thru 100 amp 120/240 Volt Pushmatic Breakers
15 thru 1200 amp 120/240 and 480V Federal Pacific FPE circuit breakers

We are circuit breakers and electrical hardware experts. Do not hesitate to call us at 858.558.2850 to find out which Circuit Breaker is right for your requirement.

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