A distribution box divides one incoming electrical supply into multiple outgoing circuits. Typical components include a main switch, busbars, circuit breakers, neutral and earth bars, terminals and an enclosure. Whether it's a home, office, or factory, the DB box makes sure power is used safely and efficiently. It supplies lighting, outlets, HVAC equipment, machinery, and other loads from one organized point. The correct ampere rating alone does not make a panel suitable.