IEC 60670-24:20 11适用于外壳保护装置和其他耗电电气设备的外壳及其部件，这些设备旨在用于家用和类似固定电气装置的额定电压不超过400 V且总输入负载电流不超过125 A。第二版取消并取代了2005年出版的第一版，构成了技术修订。介绍了与第一版相比的以下主要变化: -基本通用外壳（GP外壳）和预定设备外壳（PD外壳）的新定义； -通用外壳（GP外壳）和预定设备外壳（PD外壳）的新分类和标记； -根据附件类型的说明书和/或文件所需的数据；-足够的空间允许安装和连接制造商声明的附件（完全配备）； -第101条中对通用外壳（GP外壳）的要求； -第102条中对预定设备外壳（PD外壳）的要求； -GP外壳制造商向安装人员提供的关于如何集成附件的说明以及附件AA中给出的计算示例； -PD外壳制造商向安装人员提供的关于如何集成附件BB中给出的附件的说明。 本出版物应与IEC 60670-1:20 02一起阅读。

IEC 60670-24:2011 applies to enclosures and parts of them for housing protective devices and other power dissipating electrical equipment intended to be used with a rated voltage not exceeding 400 V and a total incoming load current not exceeding 125 A for household and similar fixed electrical installations. This second edition cancels and replaces the first edition published in 2005 and constitutes a technical revision. The following major changes from the first edition are introduced:
- new definition for basic, general purpose enclosures (GP enclosure) and enclosures for pre-determined equipment (PD enclosure);
- new classification and marking for general purpose enclosure (GP enclosure) and enclosure for pre-determined equipment (PD enclosure);
- required data for instruction sheet and/or documentation according to the type of enclosure;
- adequate space to allow mounting and connection of the accessories (fully equipped) as declared by the manufacturer;
- requirements for general purpose enclosure (GP enclosure) as in Clause 101;
- requirements for enclosure for pre-determined equipment (PD enclosure) as in Clause 102;
- instructions to be given by the manufacturer of the GP enclosure to the installer how to integrate accessories and example of calculation given in Annex AA;
- instructions to be given by the manufacturer of the PD enclosure to the installer how to integrate accessories given in Annex BB.

This publication is to be read in conjunction with IEC 60670-1:2002.