Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBO's) - Part 2-1: Applicability of the general rules to RCBO's functionally independent of line voltage
家用和类似用途带有过电流保护的剩余电流动作断路器(RCBO's) - 第2-1部分:一般规则对RCBO在功能上与线路电压无关的适用性