EN 60947-4-3:2014

SLOVENSKI STANDARD
01-september-2014
1DGRPHãþD
SIST EN 60947-4-3:2000
SIST EN 60947-4-3:2000/A1:2007
SIST EN 60947-4-3:2000/A2:2011
1L]NRQDSHWRVWQHVWLNDOQHLQNUPLOQHQDSUDYHGHO.RQWDNWRUMLLQPRWRUVNL
]DJDQMDOQLNLSROSUHYRGQLãNLNUPLOQLNLLQNRQWDNWRUMLQDL]PHQLþQLWRN]D
QHPRWRUVNHREUHPHQLWYH,(&
Low-voltage switchgear and controlgear - Part 4-3: Contactors and motor-starters - AC
semiconductor controllers and contactors for non-motor loads
Niederspannungsschaltgeräte - Teil 4-3: Schütze und Motorstarter - Halbleiter-
Steuergeräte und -Schütze für nichtmotorische Lasten für Wechselspannung
Appareillage à basse tension - Partie 4-3: Contacteurs et démarreurs de moteurs -
Gradateurs et contacteurs à semiconducteurs pour charges, autres que des moteurs, à
courant alternatif
Ta slovenski standard je istoveten z: EN 60947-4-3:2014
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 60947-4-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2014
ICS 29.130.20; 31.180 Supersedes EN 60947-4-3:2000
English Version
Low-voltage switchgear and controlgear - Part 4-3: Contactors
and motor-starters - AC semiconductor controllers and
contactors for non-motor loads
(IEC 60947-4-3:2014)
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 -Schütze für
semiconducteurs pour charges, autres que des moteurs, à nichtmotorische Lasten für Wechselspannung
courant alternatif (IEC 60947-4-3:2014)
(CEI 60947-4-3:2014)
This European Standard was approved by CENELEC on 2014-06-11. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60947-4-3:2014 E
Foreword
The text of document 121A/2/FDIS, future edition 2 of IEC 60947-4-3, prepared by SC 17B “Low-
voltage switchgear and controlgear” of IEC/TC 17 “Switchgear and controlgear" was submitted to the
IEC-CENELEC parallel vote and approved by CENELEC as EN 60947-4-3:2014.

The following dates are fixed:
• latest date by which the document has to be (dop) 2015-03-11
implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2017-06-11
• latest date by which the national
standards conflicting with the
document have to be withdrawn
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EU Directive 2004/108/EC.
For relationship with EU Directive(s), see informative Annex ZZ, which is an integral part of this
document.
This document supersedes EN 60947-4-3:2000.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment
Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).

Endorsement notice
The text of the International Standard IEC 60947-4-3:2014 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 standards indicated:

IEC 60085:2007 NOTE Harmonized as EN 60085:2008 (modified).
IEC 60146 (series) NOTE Harmonized as EN 60146 (series) (not modified).
IEC 60664 (series) NOTE Harmonized as EN 60664 (series) (not modified).
IEC 60947-4-2:2011 NOTE Harmonized as EN 60947-4-2:2012 (modified).
IEC 61439 (series) NOTE Harmonized as EN 61439 (series) (not modified).

- 3 - EN 60947-4-3:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When 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.cenelec.eu
Publication Year Title EN/HD Year

IEC 60269-1 2006 Low-voltage fuses -- Part 1: General EN 60269-1 2007
requirements
IEC 60410 1973 Sampling plans and procedures for - -
inspection by attributes
IEC 60947-1 2007 Low-voltage switchgear and controlgear -- EN 60947-1 2007
Part 1: General rules
+A1 2010  +A1 2011
IEC 61000-4 - Electromagnetic compatibility (EMC) -- Part EN 61000-4 -
(series) 4-1: Testing and measurement techniques (series)
- Overview of IEC 61000-4 series
IEC 61000-4-5 2005 Electromagnetic compatibility (EMC) -- Part EN 61000-4-5 2006
4-5: Testing and measurement techniques
- Surge immunity test
CISPR 11 (mod) 2009 Industrial, scientific and medical equipment EN 55011 2009
- Radio-frequency disturbance
characteristics - Limits and methods of
measurement
CISPR 11:2009/A1 2010  EN 55011:2009/A1 2010

Annex ZZ
(informative)
Coverage of Essential Requirements of EU Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers
protection requirements of Annex I Article 1 of the EU Directive 2004/108/EC.

Compliance with this standard provides presumption of conformity with the specified essential
requirements of the Directives concerned.

NOTE: Other requirements and other EU Directives may be applicable to the products falling within
the scope of this standard.
IEC 60947-4-3 ®
Edition 2.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear –

Part 4-3: Contactors and motor-starters – AC semiconductor controllers and

contactors for non-motor loads

Appareillage à basse tension –

Partie 4-3: Contacteurs et démarreurs de moteurs – Gradateurs et contacteurs à

semiconducteurs pour charges, autres que des moteurs, à courant alternatif

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XC
ICS 29.130.20, 31.180 ISBN 978-2-8322-1567-8

– 2 – IEC 60947-4-3:2014 © IEC 2014
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 10
3 Terms, definitions, symbols and abbreviations . 10
3.1 Terms and definitions concerning a.c. semiconductor (non-motor-load)
control devices . 11
3.1.1 AC semiconductor controllers and contactors (solid-state
contactors) (see Figure 1) . 11
3.1.2 Hybrid controllers and contactors (see Figure 1) . 14
3.2 Vacant . 18
3.3 Symbols and abbreviations . 18
4 Classification . 18
5 Characteristics of a.c. semiconductor controllers and contactors . 19
5.1 Summary of characteristics . 19
5.2 Type of equipment . 19
5.3 Rated and limiting values for main circuits . 22
5.3.1 Rated voltages . 22
5.3.2 Currents . 22
5.3.3 Rated frequency . 22
5.3.4 Rated duty . 22
5.3.5 Normal load and overload characteristics . 23
5.3.6 Rated conditional short-circuit current . 24
5.4 Utilization category . 24
5.4.1 Assignment of ratings based on the results of tests . 25
5.5 Control circuits . 26
5.6 Auxiliary circuits . 26
5.7 Vacant . 26
5.8 Coordination with short-circuit protective devices (SCPD) . 26
6 Product information . 26
6.1 Nature of information . 26
6.2 Marking . 28
6.3 Instructions for installation, operation and maintenance . 28
7 Normal service, mounting and transport conditions . 28
7.1 Normal service conditions . 28
7.1.1 Ambient air temperature . 28
7.1.2 Altitude . 28
7.1.3 Atmospheric conditions . 28
7.1.4 Shock and vibrations . 29
7.2 Conditions during transport and storage . 29
7.3 Mounting . 29
7.4 Electrical system disturbances and influences . 29
8 Constructional and performance requirements . 29
8.1 Constructional requirements . 29
8.1.1 General . 29

IEC 60947-4-3:2014 © IEC 2014 – 3 –
8.1.2 Materials . 29
8.1.3 Current-carrying parts and their connections . 29
8.1.4 Clearances and creepage distances . 29
8.1.5 Actuator . 30
8.1.6 Indication of the contact position . 30
8.1.7 Additional requirements for equipment suitable for isolation .
...