IEC 62271-100:2021适用于设计用于室内或室外安装以及在电压高于1000 V的系统上以50 Hz和/或60 Hz频率运行的三相交流断路器。本文件仅包括进行断路试验的直接试验方法。综合测试方法参考IEC 62271-101。 本第三版取消并取代2008年出版的第二版，修订版1:2012和修订版2:2017。本版为技术修订版。 与上一版相比，主要变化如下: –本文件已更新至IEC 62271-1:2017； ——包括修正案1和修正案2； –定义已更新，未使用的术语已删除； –第7.102款至第7.108款已进行重组。

IEC 62271-100:2021 is applicable to three-phase AC circuit-breakers designed for indoor or outdoor installation and for operation at frequencies of 50 Hz and/or 60 Hz on systems having voltages above 1 000 V. This document includes only direct testing methods for making-breaking tests. For synthetic testing methods refer to IEC 62271-101. This third edition cancels and replaces the second edition published in 2008, Amendment 1:2012 and Amendment 2:2017. This edition constitutes a technical revision. The main changes with respect to the previous edition are listed below: – the document has been updated to IEC 62271-1:2017; – Amendments 1 and 2 have been included; – the definitions have been updated, terms not used have been removed; – Subclauses 7.102 through 7.108 have been restructured.