ESU buys and sells new & used Low Voltage Transformers.

Electrical Supplies Unlimited buys and sells new Circuit Breakers, Transformers, Fuses, Switches, Plugs and more for San Diego surrounding areas  We will buy your used Transformers.

Low voltage electric power transformers play a crucial role in electrical systems by converting higher voltage electricity from the utility grid into lower voltage levels suitable for use in homes, businesses, and other applications. These transformers help ensure that electrical devices and equipment receive the appropriate voltage to operate safely and efficiently. They are commonly used to power lighting systems, appliances, and various electrical devices, making them essential components in modern electrical infrastructure.

For over 40 years, Electrical Supplies Unlimited (ESU) has been a trusted name in the San Diego, Orange, and Riverside Counties for supplying high-quality electrical equipment, including low voltage transformers. As a reliable supplier, ESU specializes in buying, selling, and stocking new, surplus, and recycled electrical equipment to meet the needs of electricians and homeowners alike. Our extensive inventory includes a wide range of low voltage transformers, ensuring that our customers have access to the products they need for their electrical projects. Whether you're upgrading your home's electrical system or completing a commercial installation, ESU is committed to providing top-notch products and exceptional service to our valued customers throughout the region.

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, ITE Siemens, Cutler Hammer, Square D, FPE Federal Pacific, Pushmatic, Zinsco, Crouse Hinds, Challenger, Westinghouse, Sylvania, and Bryant.

Electrical Supplies Unlimited (ESU) is your trusted source for all your electrical equipment needs in San Diego, Orange, and Riverside Counties. With over 40 years of experience, ESU has been a reliable partner for electricians and homeowners alike, offering a comprehensive range of new, surplus, and recycled electrical equipment. Our inventory includes premium products like the Square D Featured Transformers, including the 3 Phase 266V AC/460V AC models, known for their quality and reliability. Whether you're tackling a professional project or a DIY home improvement task, ESU provides top-notch electrical equipment to meet your needs. Trust ESU for all your electrical supply needs, backed by decades of industry expertise and a commitment to excellence.