A distribution box is a complete low-voltage power distribution system that meticulously assembles switching equipment, measuring instruments, protective devices, and auxiliary equipment within a closed or semi-closed metal cabinet or panel, according to electrical wiring. A distribution box is a complete low-voltage power distribution system that meticulously assembles switching equipment, measuring instruments, protective devices, and auxiliary equipment within a closed or semi-closed metal cabinet or panel, according to electrical wiring. A distribution box is a complete low-voltage power distribution system that meticulously assembles switching equipment, measuring instruments, protective devices, and auxiliary equipment within a closed or semi-closed metal cabinet or panel, according to electrical wiring requirements. Under normal. A low voltage distribution box features robust enclosures, busbars, and protection devices to ensure safe, efficient power distribution in electrical systems. Each component plays a specific role. Smart DB boxes have extra parts like energy monitoring units and communication modules. In practical. The Distribution box system diagram mainly includes the following parts: Incoming line part: Displays the incoming line source of the distribution box, which may be a single-line incoming line or multiple-line incoming lines (such as normal power supply and backup power supply), and marks the. A distribution board (also known as panelboard, circuit breaker panel, breaker panel, circuit breaker, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit.