Control signal isolation protection terminal block

The utility model provides a control signal isolation protection terminal block which aims to solve the problems that in the prior art, electrical control devices such as a PLC in an industrial electric control system are directly connected with a load, when the load occurs emergency cases such as short circuit and overcurrent, the electrical control devices such as the PLC can be easily burned out by alternating current. The control signal isolation protection terminal block comprises an optoelectronic isolator, a control signal power supply, and a terminal block power supply, the control signal isolation protection terminal block can isolate the electrical control signal emitted by a PLC from a load and cuts off the direct electrical connection between the electrical control signal and the load, and particularly, an input signal and an output signal adopt two independent power supplies, so that the phenomenon that high voltage at the load side is added to the electrical control devices to result in the burn