45 kVA Transformers in San Diego
ESU Sells New, Used & Recycled Circuit Breakers, Transformers and Electrical Supplies for the San Diego, Orange County, Riverside and LA areas!
Electrical Supplies Unlimited (ESU) is a reliable source for 45 kVA transformers serving electricians, contractors, and facilities throughout San Diego County and surrounding Southern California markets. With over 40 years of experience, ESU stocks a wide selection of new and used transformers, including 45 kVA power transformers designed for commercial, industrial, and light-utility applications. Whether you’re upgrading electrical infrastructure, replacing aging equipment, or sourcing hard-to-find capacity ratings, ESU delivers dependable transformer solutions backed by expert guidance and competitive pricing.
In addition to larger capacity units, ESU carries a strong inventory of 4 kVA new and used transformers, supporting residential, control power, and small commercial electrical needs. By maintaining both 4 kVA new and used options alongside higher-capacity units like 45 kVA transformers, ESU ensures customers can source the exact transformer size required without delays. All surplus and recycled transformers are thoroughly inspected for performance and safety, helping electricians stay compliant while saving on project costs.
ESU also actively buys surplus and obsolete transformers, offering top-dollar buyback programs for customers with excess equipment. From 4 kVA new and used transformers to high-demand 45 kVA transformers, ESU provides flexible shipping, fast availability, and personalized service across San Diego, Orange County, Riverside, Los Angeles, and beyond. When reliability, value, and experience matter, Electrical Supplies Unlimited remains a trusted leader in transformer sales and electrical supply solutions.For over 40 years, ESU, Inc. has been a trusted source for used, surplus, wholesale, and recycled electrical supplies in San Diego. Serving both the commercial and residential electrical markets, we offer an extensive inventory of high-quality equipment, including hard-to-find and obsolete items. Every piece of used equipment we sell is tested and guaranteed, backed by our knowledgeable staff and decades of experience in the industry. Our mission is to provide outstanding service while exceeding customer expectations.
At ESU, we feature a wide range of transformers, including 45 kVA transformers available in new, used, and certified options. These transformers are ideal for commercial, industrial, and residential applications that require dependable power distribution. Whether you need a cost-effective used transformer or a certified unit for long-term reliability, ESU can provide the right solution. We also carry a complete line of circuit breakers and accessories designed to meet the demands of residential, commercial, and industrial electrical systems.
Our San Diego location stocks most major brands such as Square D, Siemens, ITE, Cutler Hammer, General Electric, Federal Pacific, and more. Along with 45 kVA transformers, our inventory includes panelboards up to 600V, disconnects, fuses up to 3000 amps, meter sockets, lighting ballasts, and specialty bulbs. With a reputation built on reliability and expertise, ESU, Inc. continues to be San Diego’s go-to electrical distributor and wholesaler for both standard and hard-to-find electrical supplies.
In addition to our extensive inventory, we also buy new and used electrical equipment. Whether you're upgrading, downsizing, or clearing out surplus stock, we’re interested in purchasing equipment from major brands such as SquareD, Siemens, ITE, Cutler Hammer, General Electric, Federal Pacific, Pushmatic, Zinsco, Crouse Hinds, Challenger, Westinghouse, Sylvania, and Bryant. We're especially looking for items like Circuit Breakers, Transformers, Disconnects, Panelboards up to 600V, Fuses up to 3000 Amps, Bolt Switch Pullouts, Meter Sockets, Lighting Ballasts, and specialty bulbs including Metal Halide and Sox. Reach out today to turn your unused inventory into cash.
ESU Inc also rents electrical equipment. Greenlee Wire Pullers, Conduit benders as well as many other electrician tools.
Talk directly to one of our specialists, Ed, Scott, Kevin or Chris at 858.558.2850 for assistance. Have an emergency? Call our emergency hotline 619-540-2952