Electrical Power Transformers, Circuit Breakers, Panels and more for San Diego Electricians & Home Owners
Welcome to Electrical Supplies Unlimited (ESU), one of the leading sources for Circuit Breakers San Diego, transformers, fuses, disconnects, switches, plugs, panelboards, and electrical equipment throughout San Diego County and Southern California. We proudly serve contractors, electricians, facilities managers, property owners, and industrial customers throughout San Diego, Los Angeles, Orange County, Riverside, and beyond. We also offer shipping on a wide variety of products nationwide.
As a trusted supplier of new, used, surplus, obsolete, and hard-to-find circuit breakers in San Diego, we maintain an extensive inventory from major manufacturers including Siemens, Square D, Eaton, Cutler Hammer, General Electric (GE), Federal Pacific (FPE), Zinsco, Challenger, Pushmatic, Bryant, Westinghouse, and many others. Whether you need a replacement breaker for a residential panel or a specialized industrial breaker, ESU can help. Visit our Circuit Breakers San Diego page or browse our Circuit Breaker Resource Hub to learn more.
In addition to circuit breakers, ESU stocks a wide selection of power transformers, electrical panels, disconnects, switchgear, fuses, motor controls, and other electrical distribution equipment. Our inventory includes many common power transformer voltages including 66kV, 69kV, 110kV, 115kV, 132kV, 138kV, 220kV, and 230kV systems. Standard transformer sizes include 15 kVA, 30 kVA, 45 kVA, 75 kVA, 112.5 kVA, 225 kVA, 300 kVA, and 500 kVA.
For over 40 years, Electrical Supplies Unlimited has been a trusted resource for buying and selling surplus electrical equipment in San Diego. We regularly purchase and sell used circuit breakers, transformers, electrical panels, disconnects, switchgear, and other electrical components. Our industry experience allows us to provide competitive pricing, expert product identification, and exceptional customer service.
ESU specializes in locating obsolete circuit breakers and hard-to-find circuit breakers in San Diego. If you're searching for a discontinued Federal Pacific (FPE), Zinsco, Challenger, Pushmatic, Bryant, or other difficult-to-source breaker, our experienced staff can often help locate the exact part you need. Learn more on our Hard to Find Circuit Breakers San Diego page.
As a fully stocked electrical distributor and electrical wholesaler, we serve both residential and commercial customers with a commitment to quality, reliability, and customer satisfaction. Our knowledgeable team works hard to exceed expectations and help customers find the right electrical equipment quickly and affordably.
If you're looking for Circuit Breakers San Diego, transformers, electrical panels, or surplus electrical equipment, contact Electrical Supplies Unlimited today at 858-558-2850. For urgent requests, call our emergency hotline at 619-778-1174. Experience the difference that over four decades of electrical supply expertise can make.
ESU Inc has been in the electrical supply business for 40 years. We have a large inventory of 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 the 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. Have an emergency? Call our emergency hotline 619-778-1174
Electrical Supplies, Electrical Equipment, including Transformers, Circuit Breakers, Fuses, Panelboard switches, and more!
We stock most major brands including General Electric, 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 Transformers, Circuit Breakers, Fuses, 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, LA, Orange County and Riverside county areas and to many other intra and interstate clients. We sell electrical 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 is your go-to source for Circuit Breaker electrical supplies for San Diego and surrounding areas. We have a large inventory of most brands of circuit breakers. 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
At Electrical Supplies Unlimited, we go beyond just selling electrical products—we also buy surplus and used electrical supplies, helping contractors and businesses turn unused equipment like circuit breakers, transformers, and panels into cash. Serving the San Diego community for over four decades, we’ve built a reputation for offering fair deals and superior customer service. Our inventory is constantly updated to include a wide selection of trusted brands, making us the go-to supplier for reliable electrical solutions. Whether you’re upgrading your equipment, managing surplus inventory, or searching for affordable electrical supplies, Electrical Supplies Unlimited has the expertise and inventory to help you succeed. Visit us today for quality you can count on!
Transformers ESU has decades of experience with buying and selling Electrical Power Transformers. We have a large inventory of most brands of Power Transformers. Single Phase, three phase and more. We carry a large variety of manufacturers and usually stock Acme, Westinghouse, Cutler Hammer, ITE Siemens, FPE Federal Pacific, Square D, General Electric and Zinsco products.etc. in our store. Whether you require I phase, 3 Phase 208/240, 208 to 240, 208 to 480, 120 to 240 or other voltages we usually have the transformer in stock. Some common voltages we carry include 66 kV, 69 kV, 110 kV, 115 kV, 132 kV, 138 kV, 220 kV, and 230 kV. Standard sizes for 480- to 120/208-volt wye transformers include 15, 30, 45, 75, 112.5, 225, 300, and 500 kilovolt-amperes.
We are circuit breakers and electrical transformer hardware experts. Do not hesitate to call us at 858.558.2850 to find out which Circuit Breaker is right for your requirement.
We also sell hard-to-find refurbished electrical supplies with our guarantee. Call us for specifics!
Your one stop go to guys. Always at your service!