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  • BSI
    BS EN IEC 60947-5-8:2021 Low-voltage switchgear and controlgear - Control circuit devices and switching elements. Three-position enabling switches
    Edition: 2021
    $442.60
    / user per year

Description of BS EN IEC 60947-5-8:2021 2021

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.

Standard NumberBS EN IEC 60947-5-8:2021
TitleLow-voltage switchgear and controlgear - Control circuit devices and switching elements. Three-position enabling switches
StatusDefinitive
Publication Date2021-04-15
ReplacesBS EN 60947-5-8:2006
Identical National Standard OfEN 60947-5-8 Amd.1 Ed.1.0, IEC 60947-5-8 Amd.1 Ed.1.0
DescriptorsSwitchgear, Low-voltage equipment, Voltage, Low voltage, Control gear (electric)
ICS29.130.20 Low voltage switchgear and controlgear
CommitteePEL/121/1
ISBN978 0 580 99111 0
PublisherBSI
Pages34

The following editions for this book are also available...

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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