Founded in 1981, Circuit Breaker Sales specializes in the sale and service of low- and medium-voltage circuit breakers and other switchgear as well as electrical power distribution equipment such as motor control, power transformers, protective relays, and load-break switches. With Service Shops nationwide, we provide new, surplus, obsolete, and remanufactured electrical equipment and replacement parts from the largest inventory in the U.S.. Shop services include repair, upgrade, recondition, remanufacture of your electrical equipment. We have literally millions of replacement parts in stock, including replacement vacuum interrupters Life extension is our specialty, and our engineering staff and skilled technicians can match your existing lineup, or retrofit or retrofill your circuit breakers and switchgear with upgraded components or modern replacements.