IEC 62271-106:2021适用于交流接触器和/或基于接触器的控制器和电机启动器，设计用于室内安装和运行频率高达60 Hz（含60 Hz），电压高于1 kV且高达24 kV（含24 kV）的系统。本文件还包括设备安装在附加保护外壳中的室外安装的附加要求。 第二版取消并取代了2011年出版的第一版。它构成技术修订。 与上一版相比，此版本包括以下重大技术变更: 文件编号与IEC 62271-1 201 7相对应。

IEC 62271-106:2021 applies to AC contactors and/or contactor-based controllers and motor-starters designed for indoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 kV and up to and including 24 kV. This document also includes additional requirements for outdoor installations where the equipment is housed in an additional protective enclosure.
This second edition cancels and replaces the first edition published in 2011. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:

• document numbered to correspond to IEC 62271-1 2017.