包括外形尺寸，包括具有ISO 3456中规定特性的开关端子螺钉。这些尺寸应符合图1和表的要求。在单孔安装的情况下，安装面板上用于将开关固定到面板上的孔应如图1a）所示，在三孔安装的情况下，应如图2所示。

Includes the overall dimensions, including terminal screws for switches, having the characteristics specified in ISO 3456. These dimensions shall be in accordance with figure 1 and the table. The holes in the mounting panel for fixing the switch to the panel in the case of single-hole mounting shall be as shown in figure 1a) and in the case of triple-hole mounting as shown in figure 2.