NSN 5925-00-564-3870

An item containing fusible material which melts when the temperature reaches a predetermined value caused by an overload in an electrical circuit. The melting (fusion) of the material mechanically causes contacts to open and/or close. The item may include an integral heating element, such as a coil or resistor, but does not include contacts. Excludes coil, circuit breaker; heater, thermal release; and tripper, circuit breaker.