DIN VDE 0636-21:2015
低压熔断器(NH系统).第2-1部分:经批准的人员使用(主要用于工业)的熔断器的补充要求.国家补充件1:专用电器系统的保护
Low-voltage fuses - Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) - National Supplement 1: Protection of special electrical systems