Circuit Breakers & Electrical Supplies in St. Louis

Looking for circuit breakers in St. Louis? Electrical Supplies Unlimited (ESU) has more than 40 years of experience supplying electrical equipment to contractors, electricians, industrial facilities, distributors, and businesses. We buy and sell a large selection of new, used, surplus, and obsolete electrical equipment, providing another source when standard electrical distribution channels don't have the equipment you need.

New, Used & Surplus Circuit Breakers

ESU maintains a large selection of circuit breakers from major manufacturers including GE, Siemens, Square D, Eaton, Cutler-Hammer, Westinghouse, and others. Our inventory includes molded case circuit breakers, panel breakers, motor circuit protectors, air circuit breakers, and other electrical distribution equipment. Whether you need a current-production breaker or an older model that has been discontinued, ESU can help you locate equipment from our extensive inventory.

Obsolete & Hard-to-Find Electrical Equipment

When an electrical component is discontinued, finding an exact replacement can be difficult. ESU specializes in obsolete and hard-to-find electrical equipment, maintaining inventory of products that may no longer be readily available through conventional electrical distributors. Provide us with a manufacturer, part number, or equipment description and our team can check available inventory.

We Buy Electrical Equipment in St. Louis

ESU doesn't just sell electrical equipment—we also buy electrical equipment. If your St. Louis business has surplus circuit breakers, disconnects, transformers, fuses, switches, panelboards, or other electrical equipment that is no longer needed, ESU may be interested in purchasing it. We work with businesses looking to liquidate excess, surplus, or obsolete electrical inventory and can evaluate a wide range of equipment.

Serving St. Louis Contractors & Businesses

With more than four decades of experience in the electrical equipment industry, ESU helps customers locate electrical components for maintenance, repair, construction, and industrial applications. From replacement circuit breakers in St. Louis to surplus and obsolete electrical equipment, ESU provides contractors, electricians, and businesses with an experienced source for difficult-to-find electrical products.