• electrical Transformers san diego
  • circuit breakers wholesale san diego
  • electrical supplies company san diego

circuit breaker

Electrical Power Transformers, Circuit Breakers, Panels and more for San Diego Electricians & Home Owners

Welcome to Electrical Supplies Unlimited. We sell a wide range of Circuit Breakers, Transformers, Fuses, Switches, Plugs and more for San Diego city and surrounding areas including Miramar, Sorrento Valley, Carmel Valley, La Jolla, Del Mar to the north, and UTC, Clairemont, Pacific Beach, Clairemont Mesa, Linda Vista and Mission Bay to the south and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area.

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

We specialize in helping electricians and homeowners in San Diego! Are you in search of a reliable electrical supplies company that offers a comprehensive range of products, including new, used, and hard-to-find items? Look no further than Electrical Supplies Unlimited (ESU). With over 40 years of experience serving the area, ESU is your trusted source for all your electrical supply needs. We specialize in buying, selling, and stocking a wide variety of electrical supplies, including power transformers, circuit breakers, panel boards, fuses, and much more. Whether you're working on a new construction project or need to find a specific electrical component, ESU has you covered. Our extensive inventory ensures that you'll find what you need, and our commitment to quality and customer satisfaction means you can trust that you're getting the best products available. Visit ESU today and discover why we're San Diego's go-to electrical supplies company!  

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 and SD 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 in 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

Electrical Supplies Unlimited (ESU Inc), is your trusted partner in the electrical supply industry for over four decades. With a rich history spanning 40 years, ESU has established itself as a premier Electrical Distributor and Electrical Wholesaler, catering to both commercial and residential markets. Our extensive inventory boasts a wide range of top-quality electrical supplies, including Power Transformers, Circuit Breakers, Fuses, Panelboards, Switches, and more. At ESU, we take pride in being a fully stocked hub for all your electrical needs, offering a diverse selection of product lines readily available. Our commitment extends to specializing in hard-to-find items, ensuring that our customers have access to even the most elusive electrical components. Trust ESU Inc for unparalleled expertise, reliability, and a comprehensive array of electrical solutions. Your satisfaction is our priority.

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 Phasethree 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 San Diego 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.

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!


Buying New & Used Electrical Transformers

power transformerAre you looking for a Used Transformer Buyer in San Diego, Orange County or Riverside? Do you want cash for your surplus power transformers? Electrical Supplies Unlimited has decades of experience in buying used or new electrical power transformer surplus equipment. Don’t hesitate to contact us to sell any electrical transformer surplus you are looking to receive instant cash payments at best offers available. There is no need to hold onto old surplus that have been getting no use over the years! Just give us call today and our electrical power transformer experts will work out a price that works for you.

ESU has all your new & used Power Transformer needs. FPE Federal Pacific, Square D, General Electric, Zinsco and much more.If 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.

Electrical Power Transformers

Electrical Supplies Unlimited carries a wide variety of Commercial Service electrical products...

Commercial Service

ESU is your one-stop shop for all your Circuit Breaker needs

Circuit Breakers

Safety Switches

Safety Switches

Our large selection of fuses up to 3000 amp will usually satisfy most requirements for your job.


Panelboard Switches

Panelboard Switches

Electrical Supplies Unlimited
New & Used Electrical Supplies
Circuit Breakers - Transformers - Fuses - Panels - much more!