How to realize safe and reliable power-off automatic protection of electric valves?

1: It can protect the valve from torque damage (overload protection or over-torque protection), and the electric actuator of the valve can be powered off to make it not act.

2. Add a thermal relay to the AC contactor in the control part to protect the motor. If the motor current is too large, it will automatically cut off the power supply and make its valve not act.

But the control part will not be cut off, and the electric actuator of the valve will not act to protect the valve.

I don't know what kind of valve you are talking about. If it is an integral intelligent valve, it cannot be equipped with a thermal relay, and it can only be added to the control box.