EN IEC 60947-1:2021

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.