EATON Cutler-Hammer Series CH 3/4-inch load centers enclose CH circuit breakers for power distribution and circuit protection in residential and light commercial applications. Also called a breaker box, electrical box or even a fuse box, the main function is to take electricity supplied by the utility and distribute it throughout the home to feed lights and receptacles. They are used on services providing no more than 240 Vac and are available with bus rated 40-600A. Covers are available as surface, flush or combination.