Draft Document - Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (IEC 121A/34/CDV:2015); German version EN 60947-5-1:2004/FprA2:2015
文件草案——低压开关设备和控制设备——第5-1部分:控制电路装置和开关元件——机电控制电路装置(IEC 121A/34/CDV:2015);德文版EN 60947-5-1:2004/FprA2:2015