Electric service panels have a number of different names: fuse box, fuse panel, circuit breaker panel. Today, most homes have what is officially called the electrical service panel, or simply, the service panel. A circuit breaker panel is not exactly the same as the fuse box because it has mechanical, toggle-switch circuit breakers, not fuses, but it does perform the same function. The older fuses screw or pull in or out, as opposed to the rocker-style method of installing and removing circuit breakers.