本国际标准适用于用于连接两个或多个横截面积为0.5 mm2（含16 mm2）且符合IEC 60228的非准备刚性和/或柔性铜导线的扭合连接装置，所连接导线的总横截面积不超过35 mm2。它涵盖交流1000 V和直流1500 V以下的低压电路，其中电能用于家用和类似用途。

This International Standard applies to twist-on connecting devices for connecting two or more unprepared rigid and/or flexible copper conductors having a cross-sectional area of 0,5 mm2 up to and including 16 mm2 and complying with IEC 60228, the total cross-sectional area of the connected conductors not exceeding 35 mm2. It covers low voltage circuits up to 1 000 V a.c. and 1 500 V d.c. where electrical energy is utilized for household and similar purposes.