Switches for household and similar fixed electrical installations - Part 2-4: Particular requirements - Isolating switches (IEC 60669-2-4:2004, modified); German version EN 60669-2-4:2005
家用和类似用途固定电气装置用开关.第2-4部分:特殊要求.隔离开关(IEC 60669-2-4-2004 修改);德文版EN 60669-2-4:2005