A low power switch for use low voltage electrical monitoring circuits provided with signals from a low power instrument transformer such as found in substation facilities that signals via a communication protocol the operational status of potential, current and signal secondary circuits when connected to protection and monitoring devices (or test devices) such as protective relays, fault recorders or any other monitoring and controlling device. The low power switch includes various safety features to prevent damage to the equipment or harm to a technician.

A low power switch for use low voltage electrical monitoring circuits provided with signals from a low power instrument transformer such as found in substation facilities that signals via a communication protocol the operational status of potential, current and signal secondary circuits when connected to protection and monitoring devices (or test devices) such as protective relays, fault recorders or any other monitoring and controlling device. The low power switch includes various safety features to prevent damage to the equipment or harm to a technician.