IEC 60947-5-1 Ed. 5.0 b:2024

Current Revision
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices

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Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices

PUBLISH DATE 2024
PAGES 268

Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices

IEC 60947-5-1:2024 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear.

It applies to control circuit devices having a rated voltage not exceeding 1 000 V AC (at a frequency not exceeding 1 000 Hz) or 600 V DC.

This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

  • update of the scope structure and exclusions;
  • requirements for control circuits;
  • update of the normal service conditions (e.g. shock and vibration);
  • update of information and marking requirements including environmental information requirements referencing IEC TS 63058:2021;
  • update of the constructional requirements and the corresponding tests considering safety aspects (e.g. artificial optical radiation, security aspects, limited energy source, stored charge energy circuit);
  • update of the EMC requirements according to the generic documents;
  • new requirements for reed contact magnetic switches in Annex D;
  • requirements for class II circuit devices achieved by double or reinforced insulation in Annex F;
  • update of pull-out tests in Annex G;
  • information requirements for audible signalling device in Annex J;
  • insertion of new Annex O.
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