DIN EN 60947-3-2017 低压开关设备和控制设备.第3部分:开关,切断器,开关切断器及熔断器组合装置 (IEC 60947-3-2008+A1-2012+A2-2015);德文版本EN 60947-3-2009+A1-2012+A2-2015
Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units (IEC 60947-3:2008 + A1:2012 + A2:2015); German version EN 60947-3:2009 + A1:2012 + A2:2015