DIN EN 60439-5:2007
低压开关设备和控制器组件.第5部分:公共网络电力分配用组件的特殊要求(IEC 60439-5-2006)
Low-voltage switchgear and controlgear assemblies - Part 5: Particular requirements for assemblies for power distribution in public networks (IEC 60439-5:2006); German version EN 60439-5:2006