ESU buys and sells new & used Circuit Breakers, Panels, Switches, Plugs and more for Pauma Valley, San Diego

Electrical Supplies Unlimited buys and sells new & used Circuit Breakers in Pauma Valley, North San Diego and surrounding areas including Fallbrook, Bonsall, Oceanside, Pala, Carlsbad, Camp Pendleton  and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also buy your used Transformers.

Welcome to ESU, your go-to destination for circuit breaker solutions in Pauma Valley, San Diego. At ESU, we're dedicated to simplifying the process of buying new, used, and surplus circuit breakers, catering to a wide range of needs for both residential and commercial applications. If you find yourself with excess circuit breakers due to upgrades or changes in your electrical system, ESU offers a convenient and environmentally-conscious solution. Our team of experts meticulously evaluates each circuit breaker to ensure its quality and performance, offering a competitive price for your surplus inventory. With a commitment to sustainability and efficient electrical solutions, ESU not only helps you maximize the value of your unused circuit breakers but also contributes to responsible resource management. Reach out to ESU today and let us help you turn your surplus circuit breakers into a valuable asset.

Electrical Supplies Unlimited (ESU) is your trusted partner for all your electrical supply needs in the Pauma Valley area of San Diego. We stand as a premier buyer of a wide range of electrical components, including transformers, breakers, fuses, and more – both new and used. Our commitment to excellence extends to every aspect of our business, ensuring that we provide the highest quality products to our customers. Whether you're looking to sell surplus electrical equipment or searching for specific components, ESU is here to streamline the process, offering competitive pricing and a seamless experience. With a reputation built on reliability and a dedication to customer satisfaction, ESU is the go-to source for all your electrical supply requirements in Pauma Valley and beyond. Contact us today to explore how we can assist you with your electrical supply needs

ESU Inc has been in the electrical supply business for over 40 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 Pauma Valley, San Diego County and surrounding areas including Fallbrook, Encinitas, Oceanside, Carlsbad, Vista 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!

ESU buys and sells new & used Circuit Breakers, Panels, Switches, Plugs and more for Bressi Ranch, San Diego

Electrical Supplies Unlimited buys and sells new & used Circuit Breakers in Bressi Ranch, North San Diego and surrounding areas including Encinitas, Carlsbad, Oceanside, Cardiff  and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also buy your used Transformers.

Welcome to ESU, your go-to destination for circuit breaker solutions in Bressi Ranch, San Diego. At ESU, we're dedicated to simplifying the process of buying new, used, and surplus circuit breakers, catering to a wide range of needs for both residential and commercial applications. If you find yourself with excess circuit breakers due to upgrades or changes in your electrical system, ESU offers a convenient and environmentally-conscious solution. Our team of experts meticulously evaluates each circuit breaker to ensure its quality and performance, offering a competitive price for your surplus inventory. With a commitment to sustainability and efficient electrical solutions, ESU not only helps you maximize the value of your unused circuit breakers but also contributes to responsible resource management. Reach out to ESU today and let us help you turn your surplus circuit breakers into a valuable asset.

Electrical Supplies Unlimited (ESU) is your trusted partner for all your electrical supply needs in the Bressi Ranch area of San Diego. We stand as a premier buyer of a wide range of electrical components, including transformers, breakers, fuses, and more – both new and used. Our commitment to excellence extends to every aspect of our business, ensuring that we provide the highest quality products to our customers. Whether you're looking to sell surplus electrical equipment or searching for specific components, ESU is here to streamline the process, offering competitive pricing and a seamless experience. With a reputation built on reliability and a dedication to customer satisfaction, ESU is the go-to source for all your electrical supply requirements in Bressi Ranch and beyond. Contact us today to explore how we can assist you with your electrical supply needs

ESU Inc has been in the electrical supply business for over 40 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 Bressi Ranch, San Diego County and surrounding areas including Encinitas, Oceanside, Carlsbad, Vista 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!

Residential Circuit Breaker Safety Tips for Homeowners

Residential circuit breakers are designed to protect your home’s electrical system from dangerous overloads and short circuits. When working properly, a breaker automatically shuts off power when electrical current exceeds safe levels, preventing fires, damaged appliances, and serious electrical hazards.

Understanding residential circuit breaker safety is essential for homeowners, property managers, and electricians. Knowing how to recognize warning signs and follow basic home electrical safety tips can help prevent costly repairs and protect your family.

Why Circuit Breaker Safety Matters in Homes

Your electrical panel distributes electricity throughout your home. Each circuit breaker protects a specific circuit by stopping electrical flow when a problem occurs. Without properly functioning breakers, overloaded circuits could overheat wiring and potentially start electrical fires.

Following proper electrical panel safety practices helps ensure your system remains reliable and compliant with modern electrical standards.

Never Overload Electrical Circuits

One of the most common causes of breaker trips is circuit overload. This occurs when too many appliances draw power from the same circuit at the same time.

High-power devices such as space heaters, microwaves, hair dryers, and portable air conditioners can quickly exceed a circuit's capacity. Spreading appliances across different outlets and circuits helps prevent overload conditions.

Do Not Ignore Frequently Tripping Breakers

A breaker that trips occasionally may simply indicate temporary overload. However, breakers that trip repeatedly may signal a more serious electrical issue such as damaged wiring, faulty appliances, or a failing breaker.

If you experience frequent breaker trips, it's important to investigate the cause rather than repeatedly resetting the breaker.

Keep Your Electrical Panel Accessible

Your breaker panel should always remain easily accessible in case power needs to be shut off quickly during an emergency. Avoid blocking the panel with furniture, storage boxes, or other household items.

Electrical panels should also be clearly labeled so each breaker can be quickly identified when troubleshooting a problem.

Watch for Warning Signs of Electrical Problems

Several warning signs may indicate a circuit breaker or electrical panel issue:

• Burning smells near the electrical panel
• Warm or hot breaker switches
• Flickering lights throughout the home
• Breakers that will not stay reset
• Buzzing or crackling sounds from the panel

If any of these symptoms occur, the breaker or wiring may require professional inspection.

Replace Outdated or Unsafe Breakers

Some older electrical panels contain breakers that are now considered unsafe or unreliable. Brands such as FPE Stab-Lok, Zinsco, and certain Challenger panels have been associated with failure to trip during electrical faults.

Replacing outdated breakers with modern, code-compliant components greatly improves residential electrical safety.

When to Call an Electrician

While homeowners can safely reset a breaker, electrical repairs and panel upgrades should always be performed by qualified professionals. Licensed electricians can diagnose wiring problems, replace faulty breakers, and ensure the system meets current electrical code requirements.

Learn More About Circuit Breakers

If you want to better understand breaker types, compatibility, and electrical system protection, explore our complete Circuit Breaker Resource Hub where we provide expert guidance for residential, commercial, and industrial applications.

For a complete overview of breaker types, brands, and electrical applications, visit our Circuit Breaker Resource Hub.

More Circuit Breaker Resources

• Circuit Breaker Resource Hub
• How to Choose the Right Circuit Breaker
• Low Voltage Circuit Breakers Explained
• Common Circuit Breaker Brands

ESU buys and sells new & used Circuit Breakers, Fuses, Switches, Plugs and more for Sherman Heights in San Diego.

Electrical Supplies Unlimited buys and sells new & used Circuit Breakers in Sherman Heights and surrounding areas including East Village, Little Italy, Bankers Hill, Sorrento Valley and many more. Of course, we can arrange shipment on a wide variety of products to service those outside our area. We will also buy your used Transformers.

ESU Inc has been in the electrical supply business for over 40 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 Sherman Heights in San Diego and surrounding areas including Gaslamp Quarter, East Village, Little Italy, Bankers Hill, Golden Hill, 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 Sherman Heights 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!