noun
distribution board; panelboard; circuit breaker panel; fusebox
Refers to the electrical panel that divides and distributes power to circuits in a building. Common in residential and commercial contexts.
分電盤のブレーカーが落ちた。
The breaker in the distribution board tripped.
新しい分電盤に交換してもらった。
I had the distribution board replaced with a new one.
ブレーカー refers specifically to the circuit breaker device, while 分電盤 is the entire panel containing breakers and other components.
Compound of 分 (ぶん, 'divide') + 電 (でん, 'electricity') + 盤 (ばん, 'board'). The term directly describes its function as a board that divides and distributes electricity.