IEC 62271的本部分适用于交流接触器和/或基于接触器的控制器和电机起动器，这些控制器和起动器设计用于室内安装和运行，频率不超过60 Hz 在电压高于1 kV且不超过24 kV的系统上。本文件还包括室外安装的附加要求，其中设备安装在 额外的保护外壳。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of IEC 62271 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.All current amendments available at time of purchase are included with the purchase of this document.