Circuit Breakers (Wholesale) is a subdivision of the Electrical Apparatus and Equipment Wiring Supplies, and Construction Materials (Wholesale) industry. Companies in this industry are involved in the wholesale distribution of circuit breakers, which are electrical switches that automatically interrupt the flow of current when it exceeds a certain level. Circuit breakers are used to protect electrical circuits from damage caused by overloading or short circuits. Companies in this industry typically purchase circuit breakers from manufacturers and then sell them to retailers, contractors, and other end-users. They may also provide related services such as installation, maintenance, and repair of circuit breakers.