1.范围1。1本标准适用于额定电流为6000 A或以下、电压为600 V或以下的模制外壳开关（为方便起见，以下简称开关），这些开关作为一个整体组装在模制绝缘材料的支撑和封闭外壳中。1.2本标准适用于按照《加拿大电气规范》第I.1.3部分第8部分的规定，拟安装在整体外壳中或作为其他设备部件使用的塑壳开关，包括可在工厂或现场安装在塑壳开关上的附件，包括以下内容:（a）电气操作人员；（b） 过电压脱扣器；（c） 欠压脱扣器；（d） 辅助开关；和（e）分流跳闸装置。

1. Scope1.1This Standard applies to moulded case switches (hereinafter referred to, for convenience, as switches) rated at 6000 A or less and at 600 V or less that are assembled as an integral unit in a supporting and enclosing housing of moulded insulating material.1.2This Standard applies to moulded case switches intended for installation in overall enclosures or as components of other equipment intended for use in accordance with the Rules of the Canadian Electrical Code, Part I.1.3Clause 8 of this Standard covers accessories that may be installed on moulded case switches, either in the factory or in th e field, including the following: (a) electrical operator; (b) over-voltage trip device; (c) under-voltage trip device; (d) auxiliary switch; and (e) shunt-trip device.