Low-voltage switchgear and controlgear - Part 5-8: Control circuit devices and switching elements - Three-position enabling switches (IEC 60947-5-8:2020); German version EN IEC 60947-5-8:2021
低压开关设备和控制设备.第5-8部分:控制电路设备和开关元件.三位使能开关(IEC 60947-5-8-2020);德国版本EN IEC 60947-5-8:2021