The invention discloses a protection device of electrical equipment, belonging to the field of remote monitoring and controlling of electrical equipment. The protection device comprises the electrical equipment, a digital tester, a thermal protector, a circuit protector, a soft starter, a stop device, a signal processor, a region protocol converter and a protocol converter, wherein the digital tester, the thermal protector, the circuit protector, the soft starter and the stop device are installed on the electrical equipment; the signal processor is installed out of the electric equipment; the signal processor is respectively connected with the digital tester, the circuit protector, the soft starter and the stop device through lead wires; a first wireless signal transmitting and receiving device is installed on the signal processor; a second wireless signal transmitting and receiving device is installed on the region protocol converter; a third wireless signal transmitting and receiving device is installed on the protocol converter; and the protocol converter and a remote control console are connected. The protection device has the beneficial effects that the electrical equipment can be monitored and controlled remotely, manual field operation is not required, the labor intensity of daily overhauling is reduced, hazard can be convenient to be found in advance, and the reliability of the device is improved; and the test content is comprehensive and the like.