Pushmatic Circuit Breaker for San Diego, Riverside and Orange County

circuit breaker

Pushmatic Circuit Breakers are in stock at ESU. We have single pole 15Amp - 40Amp and 2 pole 15Amp-100A all 120/240 double-pole circuit breakers that fit Pushmatic® load centers. It operates at 120/240 VAC.

At Electrical Supplies Unlimited, we pride ourselves on our vast inventory and exceptional service. Our decades-long presence in the market is a testament to our dedication to quality and customer care. We understand the challenges of finding obsolete or rare electrical parts, which is why we offer a wide range of products, from used to surplus, to meet your unique requirements. Whether you’re looking for Pushmatic Circuit Breakers or other hard-to-find items, our knowledgeable team is here to assist you every step of the way. Trust Electrical Supplies Unlimited for all your electrical supply needs across San Diego, Orange, and Riverside Counties, and experience the difference that over 40 years of expertise can make.

For electricians and homeowners seeking reliable sources for Pushmatic Circuit Breakers, look no further than Electrical Supplies Unlimited (ESU). At ESU, we cater to your electrical supply needs by offering a comprehensive range of Pushmatic Circuit Breakers, including new, surplus, and recycled options. Our extensive inventory includes single pole 15Amp - 40Amp and 2 pole 15Amp-100A circuit breakers, all designed to fit Pushmatic® load centers seamlessly. Whether you're in need of replacements for maintenance or upgrades for your electrical system, ESU has you covered. Rest assured, our Pushmatic Circuit Breakers operate at 120/240 VAC, ensuring compatibility with various residential and commercial applications. Trust ESU to provide top-quality Pushmatic Circuit Breakers that meet your requirements while offering reliability and affordability.

Electrical Supplies Unlimited is the trusted source for a comprehensive range of electrical supplies, including new and used Pushmatic Circuit Breakers, serving electricians and electrician companies in the vibrant San Diego area. With a legacy of reliability spanning years, we have established ourselves as a go-to partner for professionals seeking top-quality electrical components. Our commitment to providing a wide array of options, including trusted brands like Pushmatic, ensures that you have the choices you need for your projects. We understand that efficiency, reliability, and cost-effectiveness are paramount in the electrical industry, which is why we offer both new and used circuit breakers to cater to a range of budgets and needs. At Electrical Supplies Unlimited, your electrical projects are in capable hands, and we take pride in being your one-stop destination for all your electrical supply needs in San Diego. Our unwavering dedication to customer satisfaction drives us to go the extra mile in providing exceptional service to electricians and electrician companies in San Diego. We recognize the unique demands of the electrical industry, and that's why we ensure our inventory is stocked with a wide variety of electrical supplies, including Pushmatic Circuit Breakers, to meet your specific requirements. Whether you're working on a residential, commercial, or industrial project, we have the supplies you need to get the job done efficiently and safely. Plus, our offering of used circuit breakers is not only budget-friendly but also eco-conscious, promoting sustainability through reuse. When you choose Electrical Supplies Unlimited, you're not just selecting a supplier; you're partnering with a team committed to your success. Discover the ease and reliability of working with us and experience the convenience of having a trusted electrical supply partner in the heart of San Diego.

Sell Panel Boards to ESU

ESU will purchase your excess electrical inventory including Electrical Panel boards. We buy most circuit breakers, transformers, new and used and fuses. 

Electrical Supplies Unlimited is your company's business source for testing, repairing, rebuilding or reconditioning electrical equipment. ESU maintains a wide variety of out of stock circuit breakers, relays, transformers, switches, relays, motor controls, and other electrical equipment.

Circuit Breaker Panelboard

We have been in the electrical supply business for over 30 years and offer fair prices for your excess electrical inventory. Call us today to find out more or request a quote here!

Low Voltage Circuit Breakers

Electrical Supplies Unlimited supplies a large stock of Low Voltage Circuit Breakers (600 Volts) and Medium Voltage Circuit Breakers (5-27kV).

With over 40 years of industry experience, Electrical Supplies Unlimited (ESU) is a trusted leader in buying, selling, and stocking a wide range of low voltage circuit breakers for commercial, industrial, and residential applications. ESU maintains a large, regularly updated inventory of high-quality low voltage circuit breakers rated up to 600 volts, featuring products from leading manufacturers to ensure reliable overload and short-circuit protection. Serving electricians and contractors throughout San Diego County and surrounding areas, ESU specializes in helping customers quickly source hard-to-find breaker solutions while offering expert guidance, competitive pricing, and dependable service. When safety, performance, and availability matter, ESU is the go-to electrical distributor for low voltage circuit breakers you can trust.

Circuit Breakers San DiegoLow Voltage Breakers

Electrical Supplies Unlimited is your trusted source for high-quality low-voltage circuit breakers (600 volts) designed to keep your electrical systems safe and reliable. Our extensive selection includes industry-leading brands and models, ensuring you get the best protection for commercial, industrial, and residential applications. Unlike medium-voltage circuit breakers, which operate at voltages between 1,000V and 72,000V and are used in large-scale power distribution networks, low-voltage circuit breakers are specifically designed for smaller-scale applications where precise overload and short-circuit protection are crucial. At Electrical Supplies Unlimited, we offer top-tier low-voltage circuit breakers that combine performance, durability, and affordability to meet your specific needs.

What makes low-voltage circuit breakers stand out is their ability to provide quick and effective protection for circuits running at 600 volts or less. Unlike medium-voltage breakers, which often require vacuum or gas insulation for arc suppression, low-voltage breakers use thermal-magnetic or electronic trip units for rapid fault detection and response. These breakers are ideal for panel boards, switchgear, and control centers, ensuring smooth and uninterrupted electrical operation. At Electrical Supplies Unlimited, we take pride in offering a vast inventory of low-voltage circuit breakers with expert guidance to help you select the right solution for your system. Whether you need replacements, upgrades, or new installations, our team is here to provide you with the highest quality electrical components at competitive prices.

Some Brands we stock include:

Federal Pacific
Square D
Roller Smith
GE - General Electric
Westinghouse-Cutler-Hammer
Siemens-Allis Chalmers
ABB-BBC-ITE-Gould



Medium Voltage Breakers

Electrical Supplies Unlimited is also a go-to source for high-quality medium-voltage circuit breakers (5-27kV), offering reliable solutions for industrial, commercial, and utility applications. Our extensive selection of medium-voltage circuit breakers ensures optimal performance, safety, and durability for power distribution systems. Whether you're upgrading an existing system or installing a new one, our expert team is here to guide you toward the best solutions for your electrical needs. With a commitment to superior quality and customer satisfaction, Electrical Supplies Unlimited is the trusted supplier for businesses looking for top-tier circuit breakers in the industry.

One key distinction between medium-voltage and low-voltage circuit breakers is their capacity and application. While low-voltage circuit breakers (typically rated below 1,000V) are designed for residential and commercial electrical panels, medium-voltage circuit breakers (ranging from 5-27kV) are essential for large-scale power distribution, industrial plants, and substations. Medium-voltage breakers are built to handle higher fault currents and provide enhanced arc flash protection, ensuring greater reliability in high-power environments. At Electrical Supplies Unlimited, we provide top-of-the-line medium-voltage circuit breakers tailored to your specific power needs, ensuring efficiency, safety, and long-term durability.


GE
Westinghouse-Cutler-Hammer
Siemens-Allis Chalmers
ABB-BBC-ITE-Gould
Federal Pacific
Square D

We will buy new and used Low & Medium Voltage Breakers

ESU Electrical Supplies Unlimited not only sells top-quality electrical components, but also buys both new and used equipment, including low and medium voltage circuit breakers. Whether you’re upgrading your system or decommissioning old gear, ESU offers a convenient solution by purchasing your surplus breakers and electrical parts. This helps reduce waste and puts valuable equipment back into circulation for future use.

Circuit Breakers

Circuit Breakers New, Used, Surplus, Buy & Sell for San Diego, Riverside, Orange County, Los Angeles and more

Circuit Breakers San DiegoElectrical Supplies Unlimited (ESU) is a trusted electrical distributor that buys and sells new and used circuit breakers for customers throughout San Diego, Riverside, Orange County, Los Angeles, and surrounding Southern California markets. With over 40 years in the electrical supply industry, ESU maintains one of the region’s largest inventories of circuit breakers across a wide range of amperages and voltages, serving both commercial and residential applications. Contractors, electricians, and maintenance teams rely on ESU because they consistently buy and sell new and used circuit breakers from leading manufacturers, including Zinsco, Federal Pacific (FPE), Pushmatic, Bulldog, Cutler Hammer, ITE Siemens, and Square D. From hard-to-find legacy breakers to high-capacity three-phase units, ESU delivers dependable breaker supplies in San Diego with competitive pricing, expert guidance, and fast availability—whether you’re purchasing, replacing, or selling surplus circuit breakers.

Circuit Breakers Electrical Supplies Unlimited is your go-to source for Circuit Breaker electrical supplies in San Diego and surrounding areas. We have been in business for over 40 years and have a large inventory of most voltages of circuit breakers and 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

Medium Voltage Breakers

Low Voltage Circuit Breakers

High Voltage Circuit Breakers

Electrical Supplies Unlimited (ESU) provides a comprehensive selection of high-quality circuit breakers for residential, commercial, and industrial applications. Residential breakers are commonly used in home electrical panels to protect circuits from overloads and short circuits. These breakers automatically cut off power when a fault is detected, preventing fires and equipment damage. Commercial breakers operate on the same principle but are built to handle higher voltages and more demanding electrical loads typically found in offices, retail buildings, and industrial facilities. ESU also offers popout resettable breakers, which feature a convenient button that "pops out" when tripped, allowing for easy manual reset without replacement—ideal for repeated-use circuits and safety-critical systems.

In addition to traditional circuit protection, ESU stocks specialized components such as DIN rail mounted breakers, which are widely used in industrial and automation control panels. These compact units snap into standardized DIN rails, making installation simple and scalable for complex systems. Popout resettable breakers are also available in DIN-mounted form for streamlined panel integration. To further enhance safety and functionality, ESU provides a variety of breaker accessories, including lockout devices, mounting hardware, and labels, enabling users to customize and secure their breaker setups according to specific code requirements or operational needs. Whether you're outfitting a residential panel or an industrial control cabinet, ESU has the right circuit protection solution.

Molded Case Circuit Breakers MCCB

Electrical Supplies Unlimited is your go-to source for high-quality Molded Case Circuit Breakers (MCCBs), offering top-tier electrical protection solutions at competitive prices. MCCBs are essential safety devices designed to automatically interrupt circuits in the event of overcurrent situations, such as short circuits or overloads, preventing damage to electrical systems and reducing fire risks. These breakers are housed in a durable, insulated molded case, ensuring long-lasting reliability and protection. At Electrical Supplies Unlimited, we carry a wide selection of MCCBs to suit various applications, providing superior electrical safety for residential, commercial, and industrial needs. Shop with us today for trusted electrical solutions that keep your systems running safely and efficiently.

Miniature Circuit Breakers (MCB)

Miniature circuit breakers (MCBs) are commonly used in residential and light commercial electrical systems. These breakers provide protection against overloads and short circuits and are typically rated for lower current applications.

Compared to molded case circuit breakers, MCBs are smaller in size and are designed for circuits with lower electrical demand, making them ideal for homes and smaller electrical panels. 

Air Circuit Breakers (ACB)

Air circuit breakers (ACBs) are designed for high-capacity electrical systems and are commonly used in large commercial and industrial applications. These breakers use air as the arc extinguishing medium and are capable of handling very high current loads.

ACBs are typically installed in main distribution panels and switchgear systems, where reliable protection and advanced control features are required.

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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 are circuit breakers and electrical hardware experts and have decaades of experience to help you. Do not hesitate to call us at 858.558.2850 to find out which Circuit Breaker is right for your requirement.

circuit breaker sales San DiegoElectrical Supplies Unlimited is your company's business source for testing, repairing, rebuilding or reconditioning electrical equipment. ESU maintains a wide variety of out of stock circuit breakers, relays, transformers, switches, relays, motor controls, and other electrical equipment. ESU will also purchase your excess electrical inventory. We also buy new and used transformers. Call us today to find out more. Some merchandise may be available as used or surplus, just call one of our representatives to find out more!

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow. Unlike a fuse, which operates once and then has to be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation. Circuit breakers are made in varying sizes, from small devices that protect an individual household appliance up to large switchgear designed to protect high voltage circuits feeding an entire city.

If you're looking for circuit breakers in San Diego, Electrical Supplies Unlimited offers one of the most comprehensive selections in the region. Whether you're replacing a single breaker or outfitting an entire panel, we provide fast access to both hard-to-find and standard breakers from top brands like Zinsco, Federal Pacific FPE, Siemens, Pushmatic, and Square D. Our San Diego location stocks circuit breakers ranging from low voltage residential units to medium voltage commercial-grade systems, ensuring you get exactly what you need for your project. With over four decades of experience serving San Diego electricians, contractors, and homeowners, we’re your trusted local source for San Diego circuit breakers and electrical solutions.

Learn More About Circuit Breakers

Explore our in-depth guides to help you choose the right breaker and maintain a safe electrical system:

ESU offers San Diego Electricians Circuit Breakers, Electrical Transformersand more

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

Electricians in San Diego 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, 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 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!

 

  1. Circuit Breakers Information Guide
  2. Commercial Circuit Breakers
  3. Circuit Breaker: The Basic Design
  4. ESU buys, sells and stocks Electrical Panels for San Diego Electricians