EN IEC 60947-4-3:2024
(Main)Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - Semiconductor controllers and semiconductor contactors for non-motor loads
Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - Semiconductor controllers and semiconductor contactors for non-motor loads
IEC 60947-4-3:2020(E) applies to semiconductor controllers and semiconductor contactors for non-motor load intended to be connected to circuits, the rated voltage of which does not exceed 1 000 V AC. It covers their use: – for operations of changing the state of AC electric circuits between the ON-state and the OFF-state; – with or without bypass switching devices; – as controller, for reducing the amplitude of the RMS AC voltage. This third edition cancels and replaces the second edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) scope exclusions; b) editorial correction of notes and hanging paragraphs; c) safety aspects related to: - general aspects; - limited energy circuits; - electronic circuits; d) mention of dedicated wiring accessories; e) power consumption measurement; f) alignment to IEC 60947-1:2020; g) alignment with IEC 60947-4-2 when appropriate.
Niederspannungsschaltgeräte - Teil 4-3: Schütze und Motorstarter - Halbleiter-Steuergeräte und Halbleiter-Schütze für nichtmotorische Lasten
Appareillage à basse tension - Partie 4-3: Contacteurs et démarreurs de moteurs - Gradateurs et contacteurs à semiconducteurs pour charges autres non moteurs
Nizkonapetostne stikalne in krmilne naprave - 4-3. del: Kontaktorji in motorski zaganjalniki - Polprevodniški krmilniki in polprevodniški kontaktorji na izmenični tok za nemotorske obremenitve (IEC 60947-4-3:2020)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2025
Nizkonapetostne stikalne in krmilne naprave - 4-3. del: Kontaktorji in motorski
zaganjalniki - Polprevodniški krmilniki in polprevodniški kontaktorji na izmenični
tok za nemotorske obremenitve (IEC 60947-4-3:2020)
Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters -
Semiconductor controllers and semiconductor contactors for non-motor loads (IEC
60947-4-3:2020)
Niederspannungsschaltgeräte - Teil 4-3: Schütze und Motorstarter - Halbleiter-
Steuergeräte und -Schütze für nicht motorische Lasten für Wechselspannung (IEC
60947-4-3:2020)
Appareillage à basse tension - Partie 4-3: Contacteurs et démarreurs de moteurs -
Gradateurs à semiconducteurs et contacteurs à semiconducteurs pour charges autres
que des moteurs (IEC 60947-4-3:2020)
Ta slovenski standard je istoveten z: EN IEC 60947-4-3:2024
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60947-4-3
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2024
ICS 29.130.20; 31.180 Supersedes EN 60947-4-3:2014
English Version
Low-voltage switchgear and controlgear - Part 4-3: Contactors
and motor-starters - Semiconductor controllers and
semiconductor contactors for non-motor loads
(IEC 60947-4-3:2020)
Appareillage à basse tension - Partie 4-3: Contacteurs et Niederspannungsschaltgeräte - Teil 4-3: Schütze und
démarreurs de moteurs - Gradateurs et contacteurs à Motorstarter - Halbleiter-Steuergeräte und Halbleiter-
semiconducteurs pour charges autres non moteurs Schütze für nichtmotorische Lasten
(IEC 60947-4-3:2020) (IEC 60947-4-3:2020)
This European Standard was approved by CENELEC on 2024-10-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60947-4-3:2024 E
European foreword
The text of document 121A/357/FDIS, future edition 3 of IEC 60947-4-3, prepared by SC 121A "Low-
voltage switchgear and controlgear" of IEC/TC 121 "Switchgear and controlgear and their assemblies
for low voltage" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which this document has (dop) 2025-12-31
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2027-12-31
standards conflicting with this document
have to be withdrawn
This document supersedes EN 60947-4-3:2014 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
For the relationship with EU Legislation, see informative Annex ZZ, which is an integral part of this
document.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60947-4-3:2020 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60068-2-2:2007 NOTE Approved as EN 60068-2-2:2007 (not modified)
IEC 60079 (series) NOTE Approved as EN IEC 60079-7:2015/A1 (series)
IEC 60085 NOTE Approved as EN 60085
IEC 60146 (series) NOTE Approved as EN 60146 (series)
IEC 60269-1:2006 NOTE Approved as EN 60269-1:2007 (not modified)
IEC 60269-1:2006/A1:2009 NOTE Approved as EN 60269-1:2007/A1:2009 (not modified)
IEC 60269-1:2006/A2:2014 NOTE Approved as EN 60269-1:2007/A2:2014 (not modified)
IEC 60364-1 NOTE Approved as HD 60364-1
IEC 60664 (series) NOTE Approved as EN 60664 (series)
IEC 60947-2 NOTE Approved as EN 60947-2
IEC 60947-3 NOTE Approved as EN IEC 60947-3
IEC 60947-4-2 NOTE Approved as EN IEC 60947-4-2
IEC 60990:2016 NOTE Approved as EN 60990:2016 (not modified)
IEC 61000-4 (series) NOTE Approved as EN 61000-4 (series)
IEC 61032 NOTE Approved as EN 61032
IEC 61439 (series) NOTE Approved as EN IEC 61439 (series)
IEC 62314 NOTE Approved as EN 62314
IEC 62477-1:2012 NOTE Approved as EN 62477-1:2012 (not modified) + A11:2014
IEC 62477-1:2012/A1:2016 NOTE Approved as EN 62477-1:2012/A1:2017 (not modified)
IEC/TR 63201 NOTE Approved as CLC IEC/TR 63201
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60445 - Basic and safety principles for man-machine EN IEC 60445 2021
interface, marking and identification -
Identification of equipment terminals,
conductor terminations and conductors
IEC 60715 - Dimensions of low-voltage switchgear and EN 60715 2017
controlgear - Standardized mounting on rails
for mechanical support of switchgear,
controlgear and accessories
IEC 60730-1 (mod) - Automatic electrical controls - Part 1: General EN 60730-1 2016
requirements
+ A1 2019
IEC 60947-1 2020 Low-voltage switchgear and controlgear - EN 60947-1 2020
Part 1: General rules
IEC 60947-4-1 - Low-voltage switchgear and controlgear - EN IEC 60947-4-1 2019
Part 4-1: Contactors and motor-starters -
Electromechanical contactors and motor-
starters
IEC 61000-3-2 - Electromagnetic compatibility (EMC) - Part 3- EN IEC 61000-3-2 2019
2: Limits - Limits for harmonic current
emissions (equipment input current <= 16 A
per phase)
IEC 61000-3-3 - Electromagnetic compatibility (EMC) - Part 3- EN 61000-3-3 2013
3: Limits - Limitation of voltage changes,
voltage fluctuations and flicker in public low-
voltage supply systems, for equipment with
rated current <= 16 A per phase and not
subject to conditional connection
+ A1 2019
Publication Year Title EN/HD Year
IEC 61000-3-11 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-3-11 2019
3-11: Limits - Limitation of voltage changes,
voltage fluctuations and flicker in public low-
voltage supply systems - Equipment with
rated current <= 75 A and subject to
conditional connection
IEC 61000-3-12 - Electromagnetic compatibility (EMC) - Part 3- EN 61000-3-12 2011
12: Limits - Limits for harmonic currents
produced by equipment connected to public
low-voltage systems with input current > 16 A
and < or = 75 A per phase
IEC 61000-4-5 - Electromagnetic compatibility (EMC) – Part EN 61000-4-5 2014
4-5: Testing and measurement techniques –
Surge immunity test
+ A1 2017
IEC 61140 2016 Protection against electric shock - Common EN 61140 2016
aspects for installation and equipment
CISPR 11 (mod) 2015 Industrial, scientific and medical equipment - EN 55011 2016
Radio-frequency disturbance characteristics -
Limits and methods of measurement
+ A1 2016 + A1 2017
ISO 2859-1 1999 Sampling procedures for inspection by - -
attributes - Part 1: Sampling schemes
indexed by acceptance quality limit (AQL) for
lot-by-lot inspection
+ A1 2011 - -
Annex ZZ
(informative)
Relationship between this European standard and the essential
requirements of Directive 2014/30/EU [2014 OJ L96] aimed to be
covered
This European standard has been prepared under a Commission’s standardisation request as regards
harmonised standards in support of Directive 2014/30/EU relating to electromagnetic compatibility,
‘M/552’ / C(2016) 7641 final of 30.11.2016 , to provide one voluntary means of conforming to essential
requirements of Directive 2014/30/EU of the European Parliament and of the Council of 26 February
2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility
[2014 OJ L96].
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZZ.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive, and associated EFTA regulations.
Table ZZ.1 — Correspondence between this European standard and Annex I of Directive
2014/30/EU [2014 OJ L96]
Clause(s) / sub-clause(s)
Essential requirements of
Remarks / Notes
Directive 2014/30/EU
of this EN
Annex I. 1(a) (electromagnetic 8.3.1, 8.3.3, 9.4.1, 9.4.3
disturbances)
Annex I. 1(b) (electromagnetic 8.3.1, 8.3.2, 9.4.1, 9.4.2
immunity)
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
COMMISSION IMPLEMENTING DECISION C(2016) 7641 final of 30.11.2016 on a standardisation request to
the European Committee for Standardisation, to the European Committee for Electrotechnical Standardisation
and to the European Telecommunications Standards Institute as regards harmonised standards in support of
Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of
the laws of the Member States relating to electromagnetic compatibility.
IEC 60947-4-3 ®
Edition 3.0 2020-07
INTERNATIONAL
STANDARD
Low-voltage switchgear and controlgear –
Part 4-3: Contactors and motor-starters – Semiconductor controllers and
semiconductor contactors for non-motor loads
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.130.20; 31.180 ISBN 978-2-8322-8550-3
– 2 – IEC 60947-4-3:2020 © IEC 2020
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 11
3 Terms, definitions, symbols and abbreviated terms . 11
3.1 General . 11
3.2 Alphabetical index of terms . 12
3.3 Terms and definitions concerning the types of semiconductor controllers and
semiconductor contactors (see Figure 1). 12
3.4 Terms and definitions concerning characteristics of semiconductor
controllers and semiconductor contactors . 13
3.5 Terms and definitions concerning safety aspects . 16
3.6 Symbols and abbreviated terms . 16
4 Classification .
...
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