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Publication details

Publication CODE Title
NBN EN IEC 60947-5-8:2021 (2021-04) LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 5-8: CONTROL CIRCUIT DEVICES AND SWITCHING ELEMENTS - THREE-POSITION ENABLING SWITCHES
 
Price Excl. VAT Total number of pages, tables and drawings
16.00 € 4.
Description
IEC 60947-5-8:2020 is available as IEC 60947-5-8:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

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.
Class  C
Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally only available in English or French. Only the cover page is translated and the document itself is in English or in French.

EN version
FR version
Status
Status IEC PUBLICATION
Situation Currently active
Replaces  NBN EN 60947-5-8:2007
Origin
Committee CLC/TC 121A
Low-voltage switchgear and controlgear
Approval
BEC Approval 2020-09-16
NBN Approval 2021-04-08
NBN Status New
Date of ratification (d.o.r.) 2020-09-16
Date of announcement (d.o.a.) 2021-07-02
IEC file modification date 2021-04-03