DIN EN 60947-5-1:2018
低压开关设备和控制设备.第5-1部分:控制电路设备和开关元件(IEC 60947-5-1-2016+COR1-2016);德文版本EN 60947-5-1-2017
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (IEC 60947-5-1:2016 + COR1:2016); German version EN 60947-5-1:2017