Abstract: An electric load restriction device which conserves the secondary use of electricity during a period of a power shortage by causing selected load circuit breakers to open, in response to a change of frequency in the supplied primary electrical energy. The device is electrically connected to individual selected circuit breaker output connections mounted in a conventional electrical distribution box. The device is fitted with a frequency sensing device that actuates a solenoid, when the incoming electrical frequency falls below a normal valve, with the contactors of the solenoid, in the closed position sending an overload current to the load side of each of the selected load circuit breakers to cause the selected load circuit breakers to open.