The enclosure forms the shell of the distribution box. It can protect the internal components from mechanical damage, dust and accidental contact. A low voltage distribution box features robust enclosures, busbars, and protection devices to ensure safe, efficient power distribution in electrical systems. This. A distribution box is a low-voltage electrical enclosure that receives incoming power and distributes it safely to multiple outgoing circuits through protective and switching devices such as MCBs, RCDs, RCBOs, fuses, isolators, busbars, neutral bars, earth bars, and surge protective devices. The box usually contains switches, fuses, or. The main parts are the Miniature Circuit Breaker (MCB), Residual Current Device (RCD), busbars, and the main switch. Whether it's a home, office, or factory, the DB box makes sure power.