Disconnects in San Diego
ESU Sells New, Used & Recycled Transformers and Electrical Supplies including Disconnects for the San Diego, Orange County, Riverside and LA areas!
Over many years, ESU has developed deep experience helping San Diego’s electricians and homeowners with the full gamut of electrical supplies: from disconnects, panelboards, circuit breakers, fuses, to transformers and more. Whether you’re installing a new sub-panel in a home, upgrading a commercial distribution system, or replacing a worn transformer, ESU’s inventory and know-how allow us to match your requirements precisely. Having assisted countless contractors in San Diego, we’re well acquainted with local codes, load demands, and sourcing challenges—and we support homeowners who want to ensure their systems are safe, code-compliant, and reliable.
When we talk about disconnects, we’re referring to switches used to isolate a circuit or piece of equipment from its power source for safe maintenance or emergency shutdown. In electrical parlance they’re also known as isolator switches or safety switches. Wikipedia+1 Disconnects come in various types including fusible disconnects (which include fuses to provide overcurrent protection) and non-fusible disconnects (which merely serve as open/close isolation switches) GlobalSpec+2Bay Area Electricians+2. Other styles include knife blade switches, load-break switches, and rotary disconnects, each suited to different current ratings, voltage levels, or industrial vs residential applications. KDM Fabrication+2RS Components+2 At ESU, we help you select the right type of disconnect—fused or non-fused, load break or standard—matching your equipment and safety needs, and ensuring that your circuits can be safely isolated when work must be done.
For Circuit Breakers, our San Diego location stocks most major brands such as Square D, Siemens, ITE, Cutler Hammer, General Electric, and more. Along with Circuit Breakers, 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