标准摘要
[中文适用范围]： 第 1 部分的本条款适用，但以下情况除外： 第一段末尾添加：本标准对单极和两极断路器提出了附加要求，这些断路器除具有上述特性外，还适用于直接操作断路器的额定直流电压单极不超过220V，两极断路器440V，额定电流不超过125A，额定直流短路能力不超过10000A。标准适用于能够接通和断开交流电流和直流电流的断路器。删除最后两段。 [外文原描述]： This standard gives additional requirements for single- and two-pole circuit-breakers suitable for operation with direct current, having a rated d.c. voltage not exceeding 220 V for single-pole and 440 V for two-pole circuit-breakers, a rated current not exceeding 125 A and a rated d.c. short-circuit capacity not exceeding 10000 A. This Part 2 is to be used in conjunction with IEC 60898-1.
英文名称Circuit-breakers for overcurrent protection for household and similar installations - Part 2: Circuit-breakers for a.c. and d.c. operation