A power cutout switch is an electrical safety device used to disconnect a circuit in the event of an overload or short circuit. Synonyms for this important component include circuit breaker, safety switch, trip switch, and breaker panel. Other terms used to describe electrical switches of this kind include fuse, isolation switch, and disconnect switch. In industrial applications, the term motor starter may also be used to describe a power cutout switch which serves as a kind of on/off switch for heavy machinery. No matter what term is used, the function of a power cutout switch remains the same: ensuring the safety of electrical circuits and the individuals who interact with them.