STANDBY POWER CUT-OFF DEVICE

A standby power cut-off device installed on a power line connecting an external commercial alternating current power and the inside of an electrical device comprises: a manual switch for supplying the commercial alternating current power or cutting off the supply of same; a solid-state relay for supplying the commercial alternating current power to an output side when current flows through an input side according to the operation of the manual switch; a low power supply unit for converting voltage of the commercial alternating current power supplied by the solid-state relay and supplying same; a microprocessor for receiving power from the low power supply unit and controlling the operation of the standby power cut-off device; and a power storage unit.