Wiktionary
distribution board
n. A board containing multiple electrical circuit breakers; a panelboard
Wikipedia
Distribution board
A distribution board (also known as panelboard, breaker panel, or electric panel) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit in a common enclosure. Normally, a main switch, and in recent boards, one or more residual-current devices (RCD) or residual current breakers with overcurrent protection (RCBO), are also incorporated.
Usage examples of "distribution board".
Big power fluctuations, distribution board fourteen compartment D-nine-five is on fire.
A locked switch in the guardhouse-and another at the main distribution board in the city.