IEC 60947-2:20 24 RLV包含官方IEC国际标准及其红线版本。Redline版本仅提供英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60947-2:20 24适用于由受过指导的或熟练的人员安装和操作的断路器，其主触点旨在连接到额定电压不超过1000 V AC或1500 V DC的电路；它还包含对整体熔断器的附加要求。 本文件也适用于额定值等于或低于1 000 V AC，另外还有一个或多个额定值高于1 000 V AC但不超过1 500 V AC的断路器。 本第六版取消并取代2016年出版的第五版及其修正案1:2019.本版构成技术修订。 与上一版相比，此版本包括以下重大技术变更: a)分离的适用性(参见条款1)； b)根据中断介质、根据设计、根据隔离的适用性去除分类（见条款4）； c)使用可连接到释放装置的外部设备调整电流设置（参见5.7.3）； d)带保护隔离电路的要求（见8.2.3.8）； e)接地故障过电流释放的附加试验（见9.3.4.2.5）； f)关于跳闸位置介电性能的附加试验（见9.3.4.3）； g)使用直流电压进行介电测试(见9.3.4.6.2和9.4.6)； h)在相间交流电压下的单极开断能力试验（见9.3.11）； i)改进附件G中功率损耗的测量； j)EMC测试的变化（见附录J）； k)在附件L中引入CBI W类。

IEC 60947-2:2024 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 60947-2:2024 applies to circuit-breakers, intended to be installed and operated by instructed or skilled persons, the main contacts of which are intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC; it also contains additional requirements for integrally fused circuit-breakers.
This document also applies to circuit-breakers with ratings at or below 1 000 V AC, additionally having one or more ratings above 1 000 V AC but not exceeding 1 500 V AC.
This sixth edition cancels and replaces the fifth edition published in 2016 and its Amendment 1: 2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) suitability for isolation (see Clause 1);
b) removal of the classification according to the interrupting medium, according to the design, according to the suitability for isolation (see Clause 4);
c) adjustment of current settings with an external device connectable to the release (see 5.7.3);
d) requirements for circuits with protective separation (see 8.2.3.8);
e) additional tests for ground-fault overcurrent releases (see 9.3.4.2.5);
f) additional tests concerning dielectric properties in tripped position (see 9.3.4.3);
g) use of DC voltage for dielectric tests (see 9.3.4.6.2 and 9.4.6);
h) tests of individual pole breaking capacity under phase-to-neutral AC voltage (see 9.3.11);
i) improvement of measurement of power loss in Annex G;
j) changes in EMC tests (see Annex J);
k) introduction of CBI class W in Annex L.