Low-voltage fuses - Part 2-1: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application); national supplement 1: Protection of special electrical systems
低压熔断器.第2-1部分:授权人员使用的熔断器(主要用于工业应用的熔断器)的补充要求;国家补充1:特殊电气系统的保护