⁸The difference between an instantaneous overcurrent (50) function and a time-overcurrent (51) function is the amount of time delay between the detection of an overcurrent event and the relay’s command to trip the circuit breaker. Any detected level of line current in excess of the instantaneous overcurrent “pickup” threshold will immediately issue a trip command, while the level of line current in excess of the time-overcurrent “pickup” threshold will determine the amount of time delay before the issuance of a trip command.