Main Switch: This switch controls all electricity coming into the box. Busbar: A metal strip spreads power to each circuit. 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. The main parts are the Miniature Circuit Breaker (MCB), Residual Current Device (RCD), busbars, and the main switch. Learn about the main parts in a distribution box. Each part. What Is a Distribution Box (DB / Distribution Board)? A distribution box (distribution board / DB box) receives incoming power from the mains supply and safely distributes it to multiple branch circuits.
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