Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBO)—Part 21:Applicability of the general rules to RCBO functionally independent of line voltage
IDT IEC 61009-2-1:1991
全国低压电器标准化技术委员会(SAC/TC 189)
除了下列修改内容以外，第1部分的本条款适用：
用下列内容代替第一段：
本部分适用于交流50 Hz或60 Hz，额定电压不超过440 V，额定电流不超过125 A，额定短路能力不超过25 000 A的动作功能与电源电压无关的家用和类似用途的带过电流保护的剩余电流动作断路器（RCBO）。
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