An electrical switch capable of opening and closing an electrical circuit in all operating conditions, including fault situations.
Synonym of trading curb
More specifically, a circuit breaker that automatically breaks overcurrent conditions; a type of overcurrent protective device.
Quarantine measures intended to prevent spread of pandemics, such as the coronavirus.
That part of a piece of electronic apparatus that provides appropriate voltages for the rest of the electronics from the connected AC source.
A source of power such as the mains or a generator.
Used other than figuratively or idiomatically: see power, supply.