scope:

IEC 60947-1:2020 applies, when required by the relevant product standard, to low-voltage switchgear and controlgear hereinafter referred to as "equipment" or "device" and intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC. This document states the general rules and common safety requirements for low-voltage switchgear and controlgear, including: - definitions; - characteristics; - information supplied with the equipment; - normal service, mounting and transport conditions, decommissioning and dismantling; - constructional and performance requirements; - verification of characteristics and performance; - energy efficiency aspects (see Annex V); - environmental aspects. This sixth edition cancels and replaces the fifth edition published in 2007, Amendment 1:2010 and Amendment 2:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - DC values testing improvement; - update of EMC tests; - Annex B deletion; - update of requirements for environmental tests (Table Q.1); - improvement of Annex R (new examples); - deletion of digital input Type 2, and introduction of Type 3 in Annex S; - example for materials declaration (Annex W); - new Annex X (co-ordination between short-circuit protective devices associated in the same circuit) created.