电源切断后，接触器不掉下的翻译：After power down, contacts do not fall 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Power is cut off, the contact does not fall

After power down, contacts do not fall

After the power source cut-off, the contact device does not fall down

Power cut, the contactor will not fall off

After power down, contacts do not fall