after the line power is applied even if the command line is high at the time of powerup when it is desired to supply power to the load from the line the command signal is provided to the i o which in turn controls the logic in the control logic to operate the gate control and thereby close the power switch the power switch can also be opened by providing an appropriate command signal when the power switch is closed in the same manner as discussed above for switch closing when the power switch is closed to provide current to the load and subsequently a current of greater than a predetermined value is sensed due to heating of the ets the ets provides a voltage indication thereof due to a change in resistance to the control logic which in turn provides a signal to the gate control to turn off the power switch after a predetermined period of overload has been sensed the time period required for turn off of the power switch is controlled in accordance with a time current curve as shown in fig2 as is well known so that the waiting period is decreased according to a predetermined function as the amount of overload increases the status of the system can be provided remotely by placing such status on the status output from the i o also when the power switch is being opened due to sensing of a temperature in the alarm range a signal is provided by the control logic on the trip output therefrom to indicate that power has been cut off at a remote location the system can be designed to.