DIN EN 60947-3:2010 低压开关装置和控制装置.第3部分:负荷开关,断路开关,负荷断路开关和开关熔断器组(IEC 60947-3-2008).德文版本EN 60947-3-2009
Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units (IEC 60947-3:2008); German version EN 60947-3:2009