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EN IEC 60947-3:2021

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

Superseded date

29-11-2021

Published date

19-02-2021

IEC 60947-3:2020 applies to switches, disconnectors, switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motor circuits of which the rated voltage does not exceed 1 000 V AC or 1 500 V DC.This fourth edition cancels and replaces the third edition published in 2008, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision.This edition includes the following significant technical changes with respect to the previous edition:

  • addition of critical load current tests for DC switches (see 9.3.9);
  • addition of requirements for a conditional short-circuit rating for disconnectors, switches, and switch-disconnectors protected by circuit-breakers (see 9.3.7.2);
  • addition of new categories for high-efficiency motors switching (see Annex A);
  • addition of new Annex E for connection to aluminium conductors;
  • addition of new Annex F for power losses measurement.

Committee
CLC/TC 121A
DocumentType
Standard
ProductNote
THIS SATANDARD IS REFERS TO : EN 61000-4-3:2006,EN 61000-4-3:2006/A1:2008,EN 61000-4-5:2014,EN 61000-4-6:2014,HD 243 S12,ISO 2859-1
PublisherName
European Committee for Standards - Electrical
Status
Superseded
SupersededBy
Supersedes

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