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Publication details

Publication CODE Title
IEC 60947-4-1:2018 (2018-10) LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 4-1: CONTACTORS AND MOTOR-STARTERS - ELECTROMECHANICAL CONTACTORS AND MOTOR-STARTERS
 
Price Excl. VAT Total number of pages, tables and drawings
451.00 € 371.
Description
IEC 60947-4-1:2018 is available as IEC 60947-4-1:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60947-4-1:2018 is applicable to the following equipment:
- electromechanical contactors and starters including motor protective switching device (MPSD);
- actuators of contactor relays;
- contacts dedicated exclusively to the coil circuit of this contactor or this contactor relay;
- dedicated accessories (e.g. dedicated wiring, dedicated latch accessory);
intended to be connected to distribution circuits, motors circuits and other load circuits, the rated voltage of which does not exceed 1 000 V AC or 1 500 V DC. This fourth edition cancels and replaces the third edition published in 2009 and its Amendment 1:2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Scope structure and exclusions
- Editorial correction of notes and hanging paragraphs
- Reference to IEC 62683-1
- Motor protective switching device (MPSD) with its requirements
- Safety aspects related to:
- General aspects;
- Limited energy circuits;
- Electronic circuits;
- Assessment procedure for electromechanical overload protection used in safety -applications (new Annex L)
- Introduction of provisions covering the impact of higher locked rotor current to achieve high efficiency class
- Mention of dedicated wiring accessories
- Pickup power measurement
- Alignment to IEC 60947-1:2007, IEC 60947-1:2007/AMD1:2010, and IEC 60947'1:2007/AMD2:2014
- Direct current requirements for covering photovoltaic application (new Annex M)
- Load monitoring indicators (new Annex O)
- Short-circuit breaking tests of MPSD (new Annex P)
- Co-ordination under short-circuit conditions between a MPSD and another short-circuit protective device associated in the same circuit (new Annex Q).
The contents of the interpretation sheet of March 2020 and the corrigendum of April 2020 have been included in this copy.
Class  C990  (IEC PUBLICATIONS IEC PUBLICATIONS)
Available files
EN/FR version

Status
Status IEC PUBLICATION
Situation Withdrawn
Replaced by  IEC 60947-4-1:2023
Replaces  IEC 60947-4-1:2009
Replaces  IEC 60947-4-1:2009+AMD1:2012 CSV
Replaces  IEC 60947-4-1:2009/AMD1:2012
Origin
Committee TC 121/SC 121A
Low-voltage switchgear and controlgear
Responsible Ir DELENS Marc
Approval
BEC Approval 2018-10-25
ICS-Code (International Standards Classification) 29.120.99 , 29.130.20
NBN Status New
IEC publication date 2018-10-25
IEC stability date 2023-12-31
IEC file modification date 2018-10-25
IEC last modification date 2020-04-22