自动显示故障报警，安全防护门，安全开关。

Automatic shows error, safety shield; safety switch.

youdao

安全开关保护装置，当马达过载或单向运转时，安全开关会自动切断电源。

C. safety switch protection device, when the motor is overloaded or when one-way operation, the safety switch will automatically cut off the power supply.

youdao

安全开关保护装置，当马达过载或单向运转时，安全开关会自动切断电源。

C. safety switch protection device, when the motor is overloaded or when one-way operation, the safety switch will automatically cut off the power supply.

youdao