CSN EN 60439-3-1995 低压开关设备和控制设备组件.第3部分:专门安装在不熟练的操作者可以使用的场合的低压开关设备和控制设备组件的特殊要求.配电箱
Low-voltage switchgear and assemblies. Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use - Distribution boards