In any electrical system, an electrical fault must be localized and tripped by the breaker closest to the fault. But what happens in the event of a stuck breaker? A stuck breaker condition occurs when a circuit breaker fails to operate upon receiving a trip signal. In a medium or high voltage system, the failure of a breaker to trip during a fault condition will seriously undermine the overall protection system, harm personnel, and damage equipment. A breaker failure can occur for a myriad of reasons including mechanical component stress, loss of control power, failure of the electric insulating medium, or an improper inhibit block signal.