IEC/TR 62271-302:2010为IEC 62271-100范围之外的有意非同时操作的断路器的设计、构造、规范和测试提供了指导。在所有其他方面，本技术报告的范围与IEC 62271-100的范围相同。本技术报告为此类断路器提供了补充信息和指导，旨在与IEC 62271-100结合使用。 本出版物应与IEC 62271-100:2008一起阅读。

IEC/TR 62271-302:2010 provides guidance on the design, construction, specification and testing of circuit-breakers with intentional non-simultaneous pole operation which are excluded from the scope of IEC 62271-100. In all other respects the scope of this technical report is identical to that of IEC 62271-100. This technical report provides supplementary information and guidance for this type of circuit-breaker and is intended to be used in conjunction with IEC 62271-100.

This publication is to be read in conjunction with IEC 62271-100:2008.