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EN IEC 60947-5-8:2021 Standard

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  Keywords:

#edition #applications #technical #added #switch

  Directive

Low voltage (LVD) Directive (2014/35/EU)

  Last Official Journal reference

Tuesday 22nd of July 2025

  Description:

Low-voltage switchgear and controlgear - Part 5-8: Control circuit devices and switching elements - Three-position enabling switches

  Purpose

IEC 60947-5-8:2020 specifies requirements for three-position enabling switches. These switches are used as components of enabling devices to provide signals that, - when activated, allow machine operation to be initiated by a separate start control, and - when de-activated, -- initiate a stop function, and -- prevent initiation of machine operation. This second edition cancels and replaces the first edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - due to the increasing range of useful applications of three-position enabling switches, note of scope, operational characteristics and tests are reviewed; - figures for example of devices incorporating enabling switch are added in Annex A; - new Annex B for procedure to determine reliability data for the switch used in functional safety applications is added.

  Publication

Tuesday 21st of December 2021

  Related Standards

EN 60523:1993/A2:1997

Low voltage (LVD) Directive (2014/35/EU)

Direct-current potentiometers

EN 60947-4-2:2012

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 4-2: Contactors and motor-starters - AC semiconductor motor controllers and starters

EN 60947-7-2:2009

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductor...

EN 60947-7-1:2009

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors

EN 60947-6-2:2003

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 6-2: Multiple function equipment - Control and protective switching devices (or equi...

EN 60947-6-1:2005

Low voltage (LVD) Directive (2014/35/EU)

Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment

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