EN IEC 60947-4-1:2019
(Main)Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters
Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters
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).
Niederspannungsschaltgeräte - Teil 4-1: Schütze und Motorstarter - Elektromechanische Schütze und Motorstarter
Appareillage à basse tension - Partie 4-1: Contacteurs et démarreurs de moteurs - Contacteurs et démarreurs électromécaniques
IEC 60947-4-1:2018 est disponible sous forme de IEC 60947-4-1:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.L'IEC 60947-4-1:2018 s'applique aux équipements suivants: - contacteurs électromécaniques et démarreurs, y compris les appareils de connexion de protection des moteurs (ACPM); - organes de commande de contacteurs auxiliaires; - contacts destinés exclusivement au circuit de la bobine de ce contacteur ou ce contacteur auxiliaire; - accessoires dédiés (câblage dédié, accessoires d'accrochage dédié, par exemple); destinés à être connectés à des circuits de distribution, des circuits de moteur et à d'autres circuits de charge, dont la tension assignée ne dépasse pas 1 000 V en courant alternatif ou 1 500 V en courant continu. Cette quatrième édition annule et remplace la troisième édition parue en 2009, ainsi que son Amendement 1:2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - Structure du domaine d'application et exclusions - Corrections rédactionnelles des notes et des alinéas suspendus - Référence à l'IEC 62683-1 - Appareil de connexion de protection des moteurs (ACPM) accompagné de ses exigences - Aspects relatifs à la sécurité: - Aspects généraux; - Circuits limités en énergie; - Circuits électroniques; - Procédure d'évaluation de la protection électromécanique contre les surcharges utilisée dans des applications de sécurité (nouvelle Annexe L) - Introduction des dispositions relatives à l'impact du courant rotor bloqué plus élevé afin d'atteindre une classe de rendement supérieure - Mention des accessoires de câblage dédiés - Mesurage de la puissance d'appel - Alignement avec l'IEC 60947-1:2007, l'IEC 60947-1:2007/AMD1:2010, et l'IEC 60947‑1:2007/AMD2:2014 - Exigences en matière de courant continu pour couvrir les applications photovoltaïques (nouvelle Annexe M) - Indicateurs de surveillance de charge (nouvelle Annexe O) - Essais de coupure en court-circuit de l’ACPM (nouvelle Annexe P) - Coordination dans les conditions de court-circuit entre un ACPM et un autre dispositif de protection contre les courts-circuits associés dans le même circuit (nouvelle Annexe Q).
Nizkonapetostne stikalne in krmilne naprave - 4-1. del: Kontaktorji in motorski zaganjalniki - Elektromehanski kontaktorji in motorski zaganjalniki (IEC 60947-4-1:2018)
Ta del standarda IEC 60947 se uporablja za naslednjo opremo:
– elektromehanske kontaktorje in zaganjalnike, vključno z motorsko zaščitno stikalno napravo (MPSD);
– sprožilnike kontaktorskih relejev;
– kontakte, ki so namenjeni izključno tokokrogu tuljave tega kontaktorja ali tega kontaktorskega releja;
– namenski pribor (npr. namensko ožičenje, namenski zapah);
namenjeno za priključitev v razdelilne tokokroge, motorska vezja in druge obremenitvene tokokroge, katerih nazivna napetost ne presega 1000 V pri izmeničnem toku oziroma 1500 V pri enosmernem toku.
Ta dokument zajema tudi postopek ocenjevanja za elektromehansko zaščito pred preobremenitvijo, namenjeno varnostni uporabi, kot je zaščita motorja v eksplozivnem okolju pred vplivi zunanjega okolja: glej dodatek L.
Ta dokument se ne uporablja za:
– zaganjalnike za motorje na enosmerni tok1;
OPOMBA 1: Zahteve za zaganjalnike za motorje na enosmerni tok so v obravnavi za naslednji cikel vzdrževanja.
– pomožne kontakte kontaktorjev in kontakte kontaktorskih relejev; ti so zajeti v standardu IEC 60947-5-1;
– zaganjalnik, ki se uporablja na nizkonapetostni strani frekvenčnega pretvornika1;
OPOMBA 2: Dodatne zahteve za zaganjalnik, ki se uporablja na nizkonapetostni strani frekvenčnega pretvornika, so v obravnavi za naslednji cikel vzdrževanja.
– napravo za zaščito pred kratkim stikom, vgrajeno v zaganjalnikih, ki niso motorske zaščitne stikalne naprave; to je zajeto v standardih IEC 60947-2 in IEC 60947-3;
– uporabo izdelka z uvedbo dodatnih ukrepov v eksplozivnih okoljih; ti so podani v skupini standardov IEC 60079;
– pravila za načrtovanje vdelane programske opreme1;
– vidike kibernetske varnosti; ti so zajeti v skupini standardov IEC 62443.
Namen tega dokumenta je navesti:
a) značilnosti opreme;
b) pogoje, ki veljajo za opremo v zvezi z:
1) njenim delovanjem in obnašanjem,
2) njenimi dielektričnimi lastnostmi,
3) njeno stopnjo zaščite,
4) njeno konstrukcijo, vključno z zaščito pred električnim udarom, požarno ogroženostjo in mehanskim tveganjem;
c) preskuse, katerih cilj je potrditi, da so bili ti pogoji in metode izvajanja teh preskusov izpolnjeni;
d) informacije, ki se predložijo z opremo ali navedejo v navodilih proizvajalca.
General Information
Relations
Overview
EN IEC 60947-4-1:2019 (IEC 60947-4-1:2018) is the fourth-edition European/International standard for low-voltage switchgear and controlgear covering electromechanical contactors and motor‑starters. It defines requirements for design, rated values, performance and safety for contactors, starters (including Motor Protective Switching Devices - MPSD), actuators and dedicated accessories intended for circuits with rated voltages up to 1 000 V AC or 1 500 V DC. The publication includes a Redline (RLV) version showing technical changes versus the previous edition.
Key topics and technical requirements
- Scope and classification of electromechanical contactors and starters, number of poles and kind of current (AC/DC).
- Rated and limiting values for main circuits (voltages, currents) and characteristic quantities.
- Motor Protective Switching Device (MPSD): new requirements and short-circuit breaking tests (Annex P).
- Safety and functional aspects:
- General safety provisions and assessment procedures for overload protection used in safety applications (new Annex L).
- Requirements for limited energy circuits and electronic circuits.
- Performance and testing:
- Pickup power measurement and tests related to higher locked-rotor currents for high-efficiency motors.
- Load monitoring indicators (new Annex O).
- Short-circuit coordination between an MPSD and associated protective devices (new Annex Q).
- Application-specific additions:
- Direct current requirements for photovoltaic (PV) applications (new Annex M).
- Mention and treatment of dedicated wiring accessories and latch accessories.
- Editorial and alignment changes with IEC 60947-1 series, reference to IEC 62683-1 and other normative documents.
Practical applications and users
This standard is essential for:
- Manufacturers of electromechanical contactors, starters and MPSDs for product design, type testing and declaration of rated data.
- Electrical designers and panel builders specifying contactors and motor‑starters in motor control centers, industrial automation, HVAC and PV systems.
- Test laboratories and certification bodies performing conformance, endurance and short‑circuit tests.
- Compliance officers and procurement teams ensuring products meet EU Directives (EMC and Low Voltage Directive) and harmonized standard requirements.
Practical benefits include safer motor control equipment, improved compatibility in assemblies, better short‑circuit coordination, and clearer guidance for PV and high‑efficiency motor applications.
Related standards
- IEC/EN 60947-1 (General rules)
- IEC 60947-2 (Circuit-breakers)
- IEC 60947-5-1 (Control circuit devices)
- IEC 62683-1 (referenced)
- Other referenced standards: IEC 60034 series (motors), IEC 61000 (EMC), IEC 61439 (assemblies)
Keywords: low-voltage switchgear, electromechanical contactors, motor-starters, MPSD, IEC 60947-4-1, photovoltaic, short-circuit coordination, load monitoring, safety.
Frequently Asked Questions
EN IEC 60947-4-1:2019 is a standard published by CLC. Its full title is "Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters - Electromechanical contactors and motor-starters". This standard covers: 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).
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).
EN IEC 60947-4-1:2019 is classified under the following ICS (International Classification for Standards) categories: 29.120.99 - Other electrical accessories; 29.130.20 - Low voltage switchgear and controlgear. The ICS classification helps identify the subject area and facilitates finding related standards.
EN IEC 60947-4-1:2019 has the following relationships with other standards: It is inter standard links to EN 60947-4-1:2010/A1:2012, EN 60947-4-1:2010, EN IEC 60947-4-1:2025, EN IEC 60947-4-1:2019/AC:2021-04, EN IEC 60947-4-1:2019/AC:2020-05. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN IEC 60947-4-1:2019 is associated with the following European legislation: EU Directives/Regulations: 2014/30/EU, 2014/35/EU, 2014/53/EU; Standardization Mandates: M/511, M/552. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase EN IEC 60947-4-1:2019 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2019
Nadomešča:
SIST EN 60947-4-1:2010
SIST EN 60947-4-1:2010/A1:2012
Nizkonapetostne stikalne in krmilne naprave - 4-1. del: Kontaktorji in motorski
zaganjalniki - Elektromehanski kontaktorji in motorski zaganjalniki (IEC 60947-4-
1:2018)
Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters -
Electromechanical contactors and motor-starters (IEC 60947-4-1:2018)
Niederspannungsschaltgeräte - Teil 4-1: Schütze und Motorstarter - Elektromechanische
Schütze und Motorstarter (IEC 60947-4-1:2018)
Appareillage à basse tension - Partie 4-1: Contacteurs et démarreurs de moteurs -
Contacteurs et démarreurs électromécaniques (IEC 60947-4-1:2018)
Ta slovenski standard je istoveten z: EN IEC 60947-4-1:2019
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 60947-4-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 29.120.99; 29.130.20 Supersedes EN 60947-4-1:2010
English Version
Low-voltage switchgear and controlgear - Part 4-1: Contactors
and motor-starters - Electromechanical contactors and motor-
starters
(IEC 60947-4-1:2018)
Appareillage à basse tension - Partie 4-1: Contacteurs et Niederspannungsschaltgeräte - Teil 4-1: Schütze und
démarreurs de moteurs - Contacteurs et démarreurs Motorstarter - Elektromechanische Schütze und
électromécaniques Motorstarter
(IEC 60947-4-1:2018) (IEC 60947-4-1:2018)
This European Standard was approved by CENELEC on 2018-11-29. 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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60947-4-1:2019 E
European foreword
The text of document 121A/224/FDIS, future edition 4 of IEC 60947-4-1, 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 the document has to be implemented at national (dop) 2019-09-22
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-03-22
document have to be withdrawn
This document supersedes EN 60947-4-1:2010.
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 mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directives
2014/30/EU and 2014/35/EU.
For the relationship with the EU Directive 2014/30/EU see informative Annex ZZA and for the
relationship with the EU Directive 2014/35/EU see informative Annex ZZB, which are integral parts of
this document.
Endorsement notice
The text of the International Standard IEC 60947-4-1:2018 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 60068-2-2:2007 NOTE Harmonized as EN 60068-2-2:2007 (not modified)
IEC 60079 (series) NOTE Harmonized as EN 60079 (series)
IEC 60079-7 NOTE Harmonized as EN 60079-7
IEC 60079-29-3 NOTE Harmonized as EN 60079-29-3
IEC 60269-1:2006 NOTE Harmonized as EN 60269-1:2007 (not modified)
IEC 60269-2:2013 NOTE Harmonized as HD 60269-2:2013 (modified)
IEC 60664-1:2007 NOTE Harmonized as EN 60664-1:2007 (not modified)
IEC 60812:2006 NOTE Harmonized as EN 60812:2006 (not modified)
IEC 60947-3 NOTE Harmonized as EN 60947-3
IEC 60947-8 NOTE Harmonized as EN 60947-8
IEC 60990:2016 NOTE Harmonized as EN 60990:2016 (not modified)
IEC 61000-6-5 NOTE Harmonized as EN 61000-6-5
IEC 61032 NOTE Harmonized as EN 61032
IEC 61095:2009 NOTE Harmonized as EN 61095:2009 (not modified)
IEC 61508-2 NOTE Harmonized as EN 61508-2
IEC 61508-3 NOTE Harmonized as EN 61508-3
IEC 61508-4:2010 NOTE Harmonized as EN 61508-4:2010 (not modified)
IEC 61508-6:2010 NOTE Harmonized as EN 61508-6:2010 (not modified)
IEC 61649 NOTE Harmonized as EN 61649
IEC 61915-2:2011 NOTE Harmonized as EN 61915-2:2012 (not modified)
IEC 62061 NOTE Harmonized as EN 62061
IEC 62443 (series) NOTE Harmonized as EN 62443 (series)
IEC 62477-1:2012 NOTE Harmonized as EN 62477-1:2012 (not modified)
IEC 62683-1 NOTE Harmonized as EN 62683-1
ISO/IEC 80079-34 NOTE Harmonized as EN ISO/IEC 80079-34
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60034-1 2017 Rotating electrical machines - Part 1: - -
Rating and performance
IEC 60034-12 2016 Rotating electrical machines - Part 12: EN 60034-12 2017
Starting performance of single-speed
three-phase cage induction motors
IEC 60034-30-1 - Rotating electrical machines - Part 30-1: EN 60034-30-1 2014
Efficiency classes of line operated AC
motors (IE code)
IEC 60038 (mod) - IEC standard voltages EN 60038 2011
IEC 60068-2-14 2009 Environmental testing - Part 2-14: Tests - EN 60068-2-14 2009
Test N: Change of temperature
IEC 60079-14 - Explosive atmospheres - Part 14: Electrical EN 60079-14 2014
installations design, selection and erection
IEC 60085 2007 Electrical insulation - Thermal evaluation EN 60085 2008
and designation
IEC 60364-1 (mod) 2005 Low-voltage electrical installations - Part 1: HD 60364-1 2008
Fundamental principles, assessment of
general characteristics, definitions
- - + A11 2017
IEC 60364-7-712 - Electrical installations of buildings -- Part 7- HD 60364-7-712 2005
712: Requirements for special installations
or locations - Solar photovoltaic (PV)
power supply systems
- - + corrigendum 2006
IEC 60715 2017 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: EN 60730-1 2016
General requirements
Publication Year Title EN/HD Year
IEC 60947-1 2007 Low-voltage switchgear and controlgear - EN 60947-1 2007
Part 1: General rules
+ A1 2010 + A1 2011
+ A2 2014 + A2 2014
IEC 60947-2 2016 Low-voltage switchgear and controlgear - EN 60947-2 2017
Part 2: Circuit-breakers
+COR 1 2016
IEC 60947-5-1 2016 Low-voltage switchgear and controlgear - EN 60947-5-1 2017
Part 5-1: Control circuit devices and
switching elements - Electromechanical
control circuit devices
+COR 1 2016
- -
IEC 61000-6-2 - Electromagnetic compatibility (EMC) - Part EN 61000-6-2 2019
6-2: Generic standards - Immunity
standard for industrial environments
IEC 61051-2 1991 Varistors for use in electronic equipment - - -
Part 2: Sectional specification for surge
suppression varistors
IEC 61140 2016 Protection against electric shock - EN 61140 2016
Common aspects for installation and
equipment
IEC 61439 series Low-voltage switchgear and controlgear EN 61439 series
assemblies
IEC 61810-1 - Electromechanical elementary relays - Part EN 61810-1 2015
1: General and safety requirements
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
ISO 3864-2 2016 Graphical symbols - Safety colours and - -
safety signs – Part 2: Design principles for
product safety labels
Dated as no equivalent European Standard exists.
Annex ZZA
(informative)
Relationship between this European standard and the essential requirements
of Directive 2014/30/EU [2014 OJ L96] aimed to be covered and the
standardisation request M/552
This European standard has been prepared under the European Commission standardisation request
C(2016) 7641 final of 30.11.2016 , ('M/552'), as regards harmonised standards in support of Directive
2014/30/EU relating to electromagnetic compatibility, 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 ZZA.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 ZZA.1 – Correspondence between this European standard and the
Essential Requirements set out in Directive 2014/30/EU [2014 OJ L96]
Essential requirements of Clause(s) / sub-clause(s)
Remarks / Notes
Directive 2014/30/EU of this EN
Annex I. 1(a) (electromagnetic 2, 8.3.3, 9.4.1, 9.4.3
disturbances)
Annex I. 1(b) (electromagnetic 2, 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.
Annex ZZB
(informative)
Relationship between this European standard and the safety objectives of
Directive 2014/35/EU [2014 OJ L96] aimed to be covered
This European standard has been prepared under a Commission’s standardization request relating to
harmonized standards in the field of the Low Voltage Directive, M/511, to provide one voluntary means
of conforming to safety objectives of Directive 2014/35/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonization of the laws of the Member States relating to the
making available on the market of electrical equipment designed for use within certain voltage limits
[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 ZZB.1 confers, within the limits
of the scope of this standard, a presumption of conformity with the corresponding safety objectives of
that Directive, and associated EFTA regulations.
Table ZZB.1 – Correspondence between this European standard and Annex I of
Directive 2014/35/EU [2014 OJ L96]
Safety objectives of Clause(s) / sub-clause(s) of this EN Remarks/note
Directive 2014/35/EU
1 a) 2, 3, 5, 6, 8, Annex A, Annex B, Annex F,
Annex K, Annex M, Annex P, Annex Q
1 b) 2, 3, 5, 6, 7, 8, 9, Annex A, Annex F,
Annex G, Annex L, Annex M, Annex N,
Annex Q
1 c) 1, 2, 3, 5, 6, 7, 8,9, Annex A, Annex B,
Annex D, Annex F, Annex G, Annex H,
Annex I, Annex K, Annex L, Annex M,
Annex O, Annex P, Annex Q
2 a) 2, 3, 5, 6, 8, 9, Annex N
2 b) 2, 3, 5, 6, 8.1, 9, Annex L
2 c) 1, 2, 3, 5, 6, 7, 8, Annex F, Annex K, Annex L
2 d) 2, 3, 5, 6, 8, 9, Annex B, Annex F, Annex K,
Annex L, Annex M, Annex N, Annex P
3 a) 2, 3, 5, 6, 7, 8, 9, Annex L, Annex M
3 b) 2, 3, 5, 6, 7, 8, 9, Annex B, Annex D,
Annex G, Annex I, Annex K, Annex L,
Annex M, Annex P, Annex Q
3 c) 2, 3, 5, 6, 8, 9, Annex B, Annex D, Annex H,
Annex L, Annex P, Annex Q
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.
IEC 60947-4-1 ®
Edition 4.0 2018-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Low-voltage switchgear and controlgear –
Part 4-1: Contactors and motor-starters – Electromechanical contactors and
motor-starters
Appareillage à basse tension –
Partie 4-1: Contacteurs et démarreurs de moteurs – Contacteurs et démarreurs
électromécaniques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.99, 29.130.20 ISBN 978-2-8322-5922-1
– 2 – IEC 60947-4-1:2018 © IEC 2018
CONTENTS
FOREWORD . 10
INTRODUCTION . 13
1 Scope . 14
2 Normative references . 15
3 Terms, definitions, symbols and abbreviated terms . 16
3.1 General . 16
3.2 Alphabetical index of terms . 16
3.3 Terms and definitions concerning contactors . 18
3.4 Terms and definitions concerning starters . 19
3.5 Terms and definitions concerning characteristic quantities . 25
3.6 Terms and definitions concerning safety aspects . 26
3.7 Symbols and abbreviated terms . 27
4 Classification . 28
5 Characteristics of contactors and starters . 28
5.1 Summary of characteristics . 28
5.2 Type of equipment . 29
5.2.1 Kind of equipment . 29
5.2.2 Number of poles . 29
5.2.3 Kind of current (AC or DC) . 29
5.2.4 Interrupting medium (air, oil, gas, vacuum, etc.) . 29
5.2.5 Operating conditions of the equipment . 29
5.3 Rated and limiting values for main circuits . 29
5.3.1 Rated voltages . 29
5.3.2 Currents or powers . 31
5.3.3 Rated frequency . 32
5.3.4 Rated duties . 32
5.3.5 Normal load and overload characteristics . 33
5.3.6 Short-circuit characteristics . 35
5.3.7 Pole impedance of a contactor (Z) . 36
5.4 Utilization category . 36
5.4.1 General . 36
5.4.2 Assignment of utilization categories based on the results of tests . 36
5.5 Control circuits . 38
5.6 Auxiliary circuits . 39
5.7 Characteristics of relay and release of overload relays and motor protective
switching device (MPSD) . 39
5.7.1 Summary of characteristics . 39
5.7.2 Types of relay or release . 39
5.7.3 Characteristic values . 39
5.7.4 Designation and current settings of overload relays . 41
5.7.5 Time-current characteristics of overload relays . 41
5.7.6 Influence of ambient air temperature. 42
5.8 Co-ordination with short-circuit protective devices . 42
5.9 Void . 42
5.10 Types and characteristics of automatic change-over devices and automatic
acceleration control devices . 42
IEC 60947-4-1:2018 © IEC 2018 – 3 –
5.10.1 Types . 42
5.10.2 Characteristics. 42
5.11 Types and characteristics of auto-transformers for two-step auto-transformer
starters . 43
5.12 Types and characteristics of starting resistors for rheostatic rotor starters . 43
6 Product information . 43
6.1 Nature of information . 43
6.1.1 Identification . 43
6.1.2 Characteristics, basic rated values and utilization . 44
6.2 Marking . 45
6.3 Instructions for installation, operation, maintenance, decommissioning and
dismantling . 46
6.4 Environmental information . 46
7 Normal service, mounting and transport conditions . 46
8 Constructional and performance requirements . 47
8.1 Constructional requirements . 47
8.1.1 General . 47
8.1.2 Materials . 47
8.1.3 Current-carrying parts and their connections . 48
8.1.4 Clearances and creepage distances . 48
8.1.5 Actuator . 48
8.1.6 Indication of the contact position . 49
8.1.7 Additional requirements for equipment suitable for isolation . 49
8.1.8 Terminals . 49
8.1.9 Additional requirements for equipment provided with a neutral pole . 49
8.1.10 Provisions for protective earthing . 49
8.1.11 Enclosures for equipment . 49
8.1.12 Degrees of protection of enclosed equipment . 50
8.1.13 Conduit pull-out, torque and bending with metallic conduits . 50
8.1.14 Limited energy source . 50
8.1.15 Stored charge energy circuit . 52
8.1.16 Fault and abnormal conditions . 52
8.1.17 Short-circuit and overload protection of ports . 53
8.2 Performance requirements . 53
8.2.1 Operating conditions . 53
8.2.2 Temperature-rise . 59
8.2.3 Dielectric properties . 61
8.2.4 Normal load and overload performance requirements . 62
8.2.5 Co-ordination with short-circuit protective devices . 68
8.3 Electromagnetic compatibility (EMC) . 71
8.3.1 General . 71
8.3.2 Immunity . 71
8.3.3 Emission . 72
9 Tests . 72
9.1 Kinds of test . 72
9.1.1 General . 72
9.1.2 Type tests . 73
9.1.3 Routine tests . 73
– 4 – IEC 60947-4-1:2018 © IEC 2018
9.1.4 Sampling tests . 73
9.1.5 Special tests . 74
9.2 Compliance with constructional requirements . 75
9.2.1 General . 75
9.2.2 Electrical performance of screwless-type clamping units . 75
9.2.3 Ageing test for screwless-type clamping units . 75
9.2.4 Limited energy source test . 76
9.2.5 Breakdown of components . 76
9.3 Compliance with performance requirements . 77
9.3.1 Test sequences . 77
9.3.2 General test conditions . 78
9.3.3 Performance under no load, normal load and overload conditions . 78
9.3.4 Performance under short-circuit conditions . 90
9.3.5 Overload current withstand capability of contactors . 95
9.3.6 Routine tests and sampling tests . 95
9.4 EMC tests . 97
9.4.1 General . 97
9.4.2 Immunity . 97
9.4.3 Emission . 99
Annex A (normative) Marking and identification of terminals of contactors, starters and
associated overload relays . 101
A.1 General . 101
A.2 Marking and identification of terminals of main circuits . 101
A.3 Marking and identification of terminals of overload relays . 101
Annex B (normative) Special tests . 103
B.1 General . 103
B.2 Mechanical durability . 103
B.2.1 General . 103
B.2.2 Verification of mechanical durability . 103
B.3 Electrical durability . 105
B.3.1 General . 105
B.3.2 Results to be obtained . 106
B.3.3 Statistical analysis of test results for contactors or starters . 106
B.4 Coordination at the crossover current between the starter and associated
SCPD . 107
B.4.1 General and definitions . 107
B.4.2 Condition for the test for the verification of co-ordination at the
crossover current by a direct method . 108
B.4.3 Test currents and test circuits . 108
B.4.4 Test procedure and results to be obtained . 108
B.4.5 Verification of co-ordination at the crossover current by an indirect
method . 108
Annex C (informative) Typical characteristics of starters . 111
Annex D (informative) Items subject to agreement between manufacturer and user . 118
Annex E (Void) . 119
Annex F (normative) Requirements for auxiliary contact linked with power contact
(mirror contact) . 120
F.1 Application and object . 120
F.1.1 Application . 120
IEC 60947-4-1:2018 © IEC 2018 – 5 –
F.1.2 Object . 120
F.2 Terms and definitions . 120
F.3 Characteristics . 120
F.4 Product information . 120
F.5 Normal service, mounting and transport conditions . 121
F.6 Constructional and performance requirements . 121
F.7 Tests . 121
F.7.1 General . 121
F.7.2 Tests on products in a new condition . 121
F.7.3 Test after conventional operational performance (defined under Table
13) . 122
Annex G (informative) Rated operational currents and rated operational powers of
switching devices for electrical motors . 123
G.1 General . 123
G.2 Rated operational powers and rated operational currents . 123
Annex H (normative) Extended functions to electronic overload relays . 127
H.1 General . 127
H.2 Terms and definitions . 127
H.3 Limits of operation of control functions . 127
H.3.1 General . 127
H.3.2 Limits of electronic overload relay with main circuit under-voltage
restarting function . 127
H.4 Test of the control functions . 128
Annex I (informative) AC-1 contactors for use with semiconductor controlled motor
load . 129
Annex J (Void) . 130
Annex K (normative) Procedure to determine data for electromechanical contactors
used in functional safety applications . 131
K.1 General . 131
K.2 Test requirements . 131
K.3 Characterization of a failure mode . 131
K.4 Failure ratios of a contactor . 131
Annex L (normative) Assessment procedure for electromechanical overload protection
used in safety applications and especially in explosive atmospheres . 133
L.1 Application and object . 133
L.1.1 Application . 133
L.1.2 Object . 133
L.2 Terms, definitions and symbols . 133
L.2.1 Terms and definitions . 133
L.2.2 Symbols and abbreviations . 134
L.3 Procedure . 135
L.3.1 General . 135
L.3.2 Safety design process . 135
L.4 Requirements . 136
L.4.1 General . 136
L.4.2 Safety plan . 136
L.4.3 Design . 137
L.4.4 Failure mode and effects analysis of the safety function . 137
L.4.5 Design plan . 138
– 6 – IEC 60947-4-1:2018 © IEC 2018
L.4.6 Verification . 138
L.4.7 Function assessed . 138
L.5 Documentation . 138
L.5.1 Technical safety documentation . 138
L.5.2 Safety instructions . 138
L.6 Example. 139
L.6.1 architecture description . 139
L.6.2 FMEA . 140
Annex M (normative) DC contactors for use in photovoltaic (PV) applications . 148
M.1 Application . 148
M.2 Object . 148
M.3 Terms and definitions . 148
M.4 Classification . 149
M.5 Characteristics . 149
M.5.1 General . 149
M.5.2 Rated impulse withstand voltage. 149
M.5.3 Utilization category . 149
M.6 Product information . 150
M.7 Normal service, mounting and transport conditions . 150
M.7.1 General . 150
M.7.2 Ambient air temperature . 150
M.7.3 Altitude . 150
M.8 Constructional and performance requirements . 151
M.8.1 Constructional requirements . 151
M.8.2 Performance requirements . 151
M.8.3 Electromagnetic compatibility (EMC) . 152
M.9 Tests . 152
M.9.1 General . 152
M.9.2 Type tests . 152
M.9.3 Making and breaking capacities and conventional operational
performance . 153
M.9.4 Thermal cycling test . 153
M.9.5 Climatic test. 153
M.9.6 Dielectric test . 153
M.9.7 Critical load current test . 154
M.9.8 Mechanical properties . 155
M.9.9 Degree of protection of enclosed contactors . 156
M.9.10 EMC . 156
M.9.11 Clearance and creepage distances . 156
Annex N (normative) Additional requirements and tests for equipment with protective
separation . 157
N.1 General . 157
N.2 Definitions. 157
N.3 Requirements . 157
N.3.1 Test method for implementing protective impedance . 157
N.3.2 Touch cu
...
SLOVENSKI STANDARD
01-maj-2019
Nadomešča:
SIST EN 60947-4-1:2010
SIST EN 60947-4-1:2010/A1:2012
Nizkonapetostne stikalne in krmilne naprave - 4-1. del: Kontaktorji in motorski
zaganjalniki - Elektromehanski kontaktorji in motorski zaganjalniki (IEC 60947-4-
1:2018)
Low-voltage switchgear and controlgear - Part 4-1: Contactors and motor-starters -
Electromechanical contactors and motor-starters (IEC 60947-4-1:2018)
Niederspannungsschaltgeräte - Teil 4-1: Schütze und Motorstarter - Elektromechanische
Schütze und Motorstarter (IEC 60947-4-1:2018)
Appareillage à basse tension - Partie 4-1: Contacteurs et démarreurs de moteurs -
Contacteurs et démarreurs électromécaniques (IEC 60947-4-1:2018)
Ta slovenski standard je istoveten z: EN IEC 60947-4-1:2019
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 60947-4-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 29.120.99; 29.130.20 Supersedes EN 60947-4-1:2010
English Version
Low-voltage switchgear and controlgear - Part 4-1: Contactors
and motor-starters - Electromechanical contactors and motor-
starters
(IEC 60947-4-1:2018)
Appareillage à basse tension - Partie 4-1: Contacteurs et Niederspannungsschaltgeräte - Teil 4-1: Schütze und
démarreurs de moteurs - Contacteurs et démarreurs Motorstarter - Elektromechanische Schütze und
électromécaniques Motorstarter
(IEC 60947-4-1:2018) (IEC 60947-4-1:2018)
This European Standard was approved by CENELEC on 2018-11-29. 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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60947-4-1:2019 E
European foreword
The text of document 121A/224/FDIS, future edition 4 of IEC 60947-4-1, 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 the document has to be implemented at national (dop) 2019-09-22
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-03-22
document have to be withdrawn
This document supersedes EN 60947-4-1:2010.
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 mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directives
2014/30/EU and 2014/35/EU.
For the relationship with the EU Directive 2014/30/EU see informative Annex ZZA and for the
relationship with the EU Directive 2014/35/EU see informative Annex ZZB, which are integral parts of
this document.
Endorsement notice
The text of the International Standard IEC 60947-4-1:2018 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 60068-2-2:2007 NOTE Harmonized as EN 60068-2-2:2007 (not modified)
IEC 60079 (series) NOTE Harmonized as EN 60079 (series)
IEC 60079-7 NOTE Harmonized as EN 60079-7
IEC 60079-29-3 NOTE Harmonized as EN 60079-29-3
IEC 60269-1:2006 NOTE Harmonized as EN 60269-1:2007 (not modified)
IEC 60269-2:2013 NOTE Harmonized as HD 60269-2:2013 (modified)
IEC 60664-1:2007 NOTE Harmonized as EN 60664-1:2007 (not modified)
IEC 60812:2006 NOTE Harmonized as EN 60812:2006 (not modified)
IEC 60947-3 NOTE Harmonized as EN 60947-3
IEC 60947-8 NOTE Harmonized as EN 60947-8
IEC 60990:2016 NOTE Harmonized as EN 60990:2016 (not modified)
IEC 61000-6-5 NOTE Harmonized as EN 61000-6-5
IEC 61032 NOTE Harmonized as EN 61032
IEC 61095:2009 NOTE Harmonized as EN 61095:2009 (not modified)
IEC 61508-2 NOTE Harmonized as EN 61508-2
IEC 61508-3 NOTE Harmonized as EN 61508-3
IEC 61508-4:2010 NOTE Harmonized as EN 61508-4:2010 (not modified)
IEC 61508-6:2010 NOTE Harmonized as EN 61508-6:2010 (not modified)
IEC 61649 NOTE Harmonized as EN 61649
IEC 61915-2:2011 NOTE Harmonized as EN 61915-2:2012 (not modified)
IEC 62061 NOTE Harmonized as EN 62061
IEC 62443 (series) NOTE Harmonized as EN 62443 (series)
IEC 62477-1:2012 NOTE Harmonized as EN 62477-1:2012 (not modified)
IEC 62683-1 NOTE Harmonized as EN 62683-1
ISO/IEC 80079-34 NOTE Harmonized as EN ISO/IEC 80079-34
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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60034-1 2017 Rotating electrical machines - Part 1: - -
Rating and performance
IEC 60034-12 2016 Rotating electrical machines - Part 12: EN 60034-12 2017
Starting performance of single-speed
three-phase cage induction motors
IEC 60034-30-1 - Rotating electrical machines - Part 30-1: EN 60034-30-1 2014
Efficiency classes of line operated AC
motors (IE code)
IEC 60038 (mod) - IEC standard voltages EN 60038 2011
IEC 60068-2-14 2009 Environmental testing - Part 2-14: Tests - EN 60068-2-14 2009
Test N: Change of temperature
IEC 60079-14 - Explosive atmospheres - Part 14: Electrical EN 60079-14 2014
installations design, selection and erection
IEC 60085 2007 Electrical insulation - Thermal evaluation EN 60085 2008
and designation
IEC 60364-1 (mod) 2005 Low-voltage electrical installations - Part 1: HD 60364-1 2008
Fundamental principles, assessment of
general characteristics, definitions
- - + A11 2017
IEC 60364-7-712 - Electrical installations of buildings -- Part 7- HD 60364-7-712 2005
712: Requirements for special installations
or locations - Solar photovoltaic (PV)
power supply systems
- - + corrigendum 2006
IEC 60715 2017 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: EN 60730-1 2016
General requirements
Publication Year Title EN/HD Year
IEC 60947-1 2007 Low-voltage switchgear and controlgear - EN 60947-1 2007
Part 1: General rules
+ A1 2010 + A1 2011
+ A2 2014 + A2 2014
IEC 60947-2 2016 Low-voltage switchgear and controlgear - EN 60947-2 2017
Part 2: Circuit-breakers
+COR 1 2016
IEC 60947-5-1 2016 Low-voltage switchgear and controlgear - EN 60947-5-1 2017
Part 5-1: Control circuit devices and
switching elements - Electromechanical
control circuit devices
+COR 1 2016
- -
IEC 61000-6-2 - Electromagnetic compatibility (EMC) - Part EN 61000-6-2 2019
6-2: Generic standards - Immunity
standard for industrial environments
IEC 61051-2 1991 Varistors for use in electronic equipment - - -
Part 2: Sectional specification for surge
suppression varistors
IEC 61140 2016 Protection against electric shock - EN 61140 2016
Common aspects for installation and
equipment
IEC 61439 series Low-voltage switchgear and controlgear EN 61439 series
assemblies
IEC 61810-1 - Electromechanical elementary relays - Part EN 61810-1 2015
1: General and safety requirements
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
ISO 3864-2 2016 Graphical symbols - Safety colours and - -
safety signs – Part 2: Design principles for
product safety labels
Dated as no equivalent European Standard exists.
Annex ZZA
(informative)
Relationship between this European standard and the essential requirements
of Directive 2014/30/EU [2014 OJ L96] aimed to be covered and the
standardisation request M/552
This European standard has been prepared under the European Commission standardisation request
C(2016) 7641 final of 30.11.2016 , ('M/552'), as regards harmonised standards in support of Directive
2014/30/EU relating to electromagnetic compatibility, 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 ZZA.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 ZZA.1 – Correspondence between this European standard and the
Essential Requirements set out in Directive 2014/30/EU [2014 OJ L96]
Essential requirements of Clause(s) / sub-clause(s)
Remarks / Notes
Directive 2014/30/EU of this EN
Annex I. 1(a) (electromagnetic 2, 8.3.3, 9.4.1, 9.4.3
disturbances)
Annex I. 1(b) (electromagnetic 2, 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.
Annex ZZB
(informative)
Relationship between this European standard and the safety objectives of
Directive 2014/35/EU [2014 OJ L96] aimed to be covered
This European standard has been prepared under a Commission’s standardization request relating to
harmonized standards in the field of the Low Voltage Directive, M/511, to provide one voluntary means
of conforming to safety objectives of Directive 2014/35/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonization of the laws of the Member States relating to the
making available on the market of electrical equipment designed for use within certain voltage limits
[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 ZZB.1 confers, within the limits
of the scope of this standard, a presumption of conformity with the corresponding safety objectives of
that Directive, and associated EFTA regulations.
Table ZZB.1 – Correspondence between this European standard and Annex I of
Directive 2014/35/EU [2014 OJ L96]
Safety objectives of Clause(s) / sub-clause(s) of this EN Remarks/note
Directive 2014/35/EU
1 a) 2, 3, 5, 6, 8, Annex A, Annex B, Annex F,
Annex K, Annex M, Annex P, Annex Q
1 b) 2, 3, 5, 6, 7, 8, 9, Annex A, Annex F,
Annex G, Annex L, Annex M, Annex N,
Annex Q
1 c) 1, 2, 3, 5, 6, 7, 8,9, Annex A, Annex B,
Annex D, Annex F, Annex G, Annex H,
Annex I, Annex K, Annex L, Annex M,
Annex O, Annex P, Annex Q
2 a) 2, 3, 5, 6, 8, 9, Annex N
2 b) 2, 3, 5, 6, 8.1, 9, Annex L
2 c) 1, 2, 3, 5, 6, 7, 8, Annex F, Annex K, Annex L
2 d) 2, 3, 5, 6, 8, 9, Annex B, Annex F, Annex K,
Annex L, Annex M, Annex N, Annex P
3 a) 2, 3, 5, 6, 7, 8, 9, Annex L, Annex M
3 b) 2, 3, 5, 6, 7, 8, 9, Annex B, Annex D,
Annex G, Annex I, Annex K, Annex L,
Annex M, Annex P, Annex Q
3 c) 2, 3, 5, 6, 8, 9, Annex B, Annex D, Annex H,
Annex L, Annex P, Annex Q
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.
IEC 60947-4-1 ®
Edition 4.0 2018-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Low-voltage switchgear and controlgear –
Part 4-1: Contactors and motor-starters – Electromechanical contactors and
motor-starters
Appareillage à basse tension –
Partie 4-1: Contacteurs et démarreurs de moteurs – Contacteurs et démarreurs
électromécaniques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.99, 29.130.20 ISBN 978-2-8322-5922-1
– 2 – IEC 60947-4-1:2018 © IEC 2018
CONTENTS
FOREWORD . 10
INTRODUCTION . 13
1 Scope . 14
2 Normative references . 15
3 Terms, definitions, symbols and abbreviated terms . 16
3.1 General . 16
3.2 Alphabetical index of terms . 16
3.3 Terms and definitions concerning contactors . 18
3.4 Terms and definitions concerning starters . 19
3.5 Terms and definitions concerning characteristic quantities . 25
3.6 Terms and definitions concerning safety aspects . 26
3.7 Symbols and abbreviated terms . 27
4 Classification . 28
5 Characteristics of contactors and starters . 28
5.1 Summary of characteristics . 28
5.2 Type of equipment . 29
5.2.1 Kind of equipment . 29
5.2.2 Number of poles . 29
5.2.3 Kind of current (AC or DC) . 29
5.2.4 Interrupting medium (air, oil, gas, vacuum, etc.) . 29
5.2.5 Operating conditions of the equipment . 29
5.3 Rated and limiting values for main circuits . 29
5.3.1 Rated voltages . 29
5.3.2 Currents or powers . 31
5.3.3 Rated frequency . 32
5.3.4 Rated duties . 32
5.3.5 Normal load and overload characteristics . 33
5.3.6 Short-circuit characteristics . 35
5.3.7 Pole impedance of a contactor (Z) . 36
5.4 Utilization category . 36
5.4.1 General . 36
5.4.2 Assignment of utilization categories based on the results of tests . 36
5.5 Control circuits . 38
5.6 Auxiliary circuits . 39
5.7 Characteristics of relay and release of overload relays and motor protective
switching device (MPSD) . 39
5.7.1 Summary of characteristics . 39
5.7.2 Types of relay or release . 39
5.7.3 Characteristic values . 39
5.7.4 Designation and current settings of overload relays . 41
5.7.5 Time-current characteristics of overload relays . 41
5.7.6 Influence of ambient air temperature. 42
5.8 Co-ordination with short-circuit protective devices . 42
5.9 Void . 42
5.10 Types and characteristics of automatic change-over devices and automatic
acceleration control devices . 42
IEC 60947-4-1:2018 © IEC 2018 – 3 –
5.10.1 Types . 42
5.10.2 Characteristics. 42
5.11 Types and characteristics of auto-transformers for two-step auto-transformer
starters . 43
5.12 Types and characteristics of starting resistors for rheostatic rotor starters . 43
6 Product information . 43
6.1 Nature of information . 43
6.1.1 Identification . 43
6.1.2 Characteristics, basic rated values and utilization . 44
6.2 Marking . 45
6.3 Instructions for installation, operation, maintenance, decommissioning and
dismantling . 46
6.4 Environmental information . 46
7 Normal service, mounting and transport conditions . 46
8 Constructional and performance requirements . 47
8.1 Constructional requirements . 47
8.1.1 General . 47
8.1.2 Materials . 47
8.1.3 Current-carrying parts and their connections . 48
8.1.4 Clearances and creepage distances . 48
8.1.5 Actuator . 48
8.1.6 Indication of the contact position . 49
8.1.7 Additional requirements for equipment suitable for isolation . 49
8.1.8 Terminals . 49
8.1.9 Additional requirements for equipment provided with a neutral pole . 49
8.1.10 Provisions for protective earthing . 49
8.1.11 Enclosures for equipment . 49
8.1.12 Degrees of protection of enclosed equipment . 50
8.1.13 Conduit pull-out, torque and bending with metallic conduits . 50
8.1.14 Limited energy source . 50
8.1.15 Stored charge energy circuit . 52
8.1.16 Fault and abnormal conditions . 52
8.1.17 Short-circuit and overload protection of ports . 53
8.2 Performance requirements . 53
8.2.1 Operating conditions . 53
8.2.2 Temperature-rise . 59
8.2.3 Dielectric properties . 61
8.2.4 Normal load and overload performance requirements . 62
8.2.5 Co-ordination with short-circuit protective devices . 68
8.3 Electromagnetic compatibility (EMC) . 71
8.3.1 General . 71
8.3.2 Immunity . 71
8.3.3 Emission . 72
9 Tests . 72
9.1 Kinds of test . 72
9.1.1 General . 72
9.1.2 Type tests . 73
9.1.3 Routine tests . 73
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9.1.4 Sampling tests . 73
9.1.5 Special tests . 74
9.2 Compliance with constructional requirements . 75
9.2.1 General . 75
9.2.2 Electrical performance of screwless-type clamping units . 75
9.2.3 Ageing test for screwless-type clamping units . 75
9.2.4 Limited energy source test . 76
9.2.5 Breakdown of components . 76
9.3 Compliance with performance requirements . 77
9.3.1 Test sequences . 77
9.3.2 General test conditions . 78
9.3.3 Performance under no load, normal load and overload conditions . 78
9.3.4 Performance under short-circuit conditions . 90
9.3.5 Overload current withstand capability of contactors . 95
9.3.6 Routine tests and sampling tests . 95
9.4 EMC tests . 97
9.4.1 General . 97
9.4.2 Immunity . 97
9.4.3 Emission . 99
Annex A (normative) Marking and identification of terminals of contactors, starters and
associated overload relays . 101
A.1 General . 101
A.2 Marking and identification of terminals of main circuits . 101
A.3 Marking and identification of terminals of overload relays . 101
Annex B (normative) Special tests . 103
B.1 General . 103
B.2 Mechanical durability . 103
B.2.1 General . 103
B.2.2 Verification of mechanical durability . 103
B.3 Electrical durability . 105
B.3.1 General . 105
B.3.2 Results to be obtained . 106
B.3.3 Statistical analysis of test results for contactors or starters . 106
B.4 Coordination at the crossover current between the starter and associated
SCPD . 107
B.4.1 General and definitions . 107
B.4.2 Condition for the test for the verification of co-ordination at the
crossover current by a direct method . 108
B.4.3 Test currents and test circuits . 108
B.4.4 Test procedure and results to be obtained . 108
B.4.5 Verification of co-ordination at the crossover current by an indirect
method . 108
Annex C (informative) Typical characteristics of starters . 111
Annex D (informative) Items subject to agreement between manufacturer and user . 118
Annex E (Void) . 119
Annex F (normative) Requirements for auxiliary contact linked with power contact
(mirror contact) . 120
F.1 Application and object . 120
F.1.1 Application . 120
IEC 60947-4-1:2018 © IEC 2018 – 5 –
F.1.2 Object . 120
F.2 Terms and definitions . 120
F.3 Characteristics . 120
F.4 Product information . 120
F.5 Normal service, mounting and transport conditions . 121
F.6 Constructional and performance requirements . 121
F.7 Tests . 121
F.7.1 General . 121
F.7.2 Tests on products in a new condition . 121
F.7.3 Test after conventional operational performance (defined under Table
13) . 122
Annex G (informative) Rated operational currents and rated operational powers of
switching devices for electrical motors . 123
G.1 General . 123
G.2 Rated operational powers and rated operational currents . 123
Annex H (normative) Extended functions to electronic overload relays . 127
H.1 General . 127
H.2 Terms and definitions . 127
H.3 Limits of operation of control functions . 127
H.3.1 General . 127
H.3.2 Limits of electronic overload relay with main circuit under-voltage
restarting function . 127
H.4 Test of the control functions . 128
Annex I (informative) AC-1 contactors for use with semiconductor controlled motor
load . 129
Annex J (Void) . 130
Annex K (normative) Procedure to determine data for electromechanical contactors
used in functional safety applications . 131
K.1 General . 131
K.2 Test requirements . 131
K.3 Characterization of a failure mode . 131
K.4 Failure ratios of a contactor . 131
Annex L (normative) Assessment procedure for electromechanical overload protection
used in safety applications and especially in explosive atmospheres . 133
L.1 Application and object . 133
L.1.1 Application . 133
L.1.2 Object . 133
L.2 Terms, definitions and symbols . 133
L.2.1 Terms and definitions . 133
L.2.2 Symbols and abbreviations . 134
L.3 Procedure . 135
L.3.1 General . 135
L.3.2 Safety design process . 135
L.4 Requirements . 136
L.4.1 General . 136
L.4.2 Safety plan . 136
L.4.3 Design . 137
L.4.4 Failure mode and effects analysis of the safety function . 137
L.4.5 Design plan . 138
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L.4.6 Verification . 138
L.4.7 Function assessed . 138
L.5 Documentation . 138
L.5.1 Technical safety documentation . 138
L.5.2 Safety instructions . 138
L.6 Example. 139
L.6.1 architecture description . 139
L.6.2 FMEA . 140
Annex M (normative) DC contactors for use in photovoltaic (PV) applications . 148
M.1 Application . 148
M.2 Object . 148
M.3 Terms and definitions . 148
M.4 Classification . 149
M.5 Characteristics . 149
M.5.1 General . 149
M.5.2 Rated impulse withstand voltage. 149
M.5.3 Utilization category . 149
M.6 Product information . 150
M.7 Normal service, mounting and transport conditions . 150
M.7.1 General . 150
M.7.2 Ambient air temperature . 150
M.7.3 Altitude . 150
M.8 Constructional and performance requirements . 151
M.8.1 Constructional requirements . 151
M.8.2 Performance requirements . 151
M.8.3 Electromagnetic compatibility (EMC) . 152
M.9 Tests . 152
M.9.1 General . 152
M.9.2 Type tests . 152
M.9.3 Making and breaking capacities and conventional operational
performance . 153
M.9.4 Thermal cycling test . 153
M.9.5 Climatic test. 153
M.9.6 Dielectric test . 153
M.9.7 Critical load current test . 154
M.9.8 Mechanical properties . 155
M.9.9 Degree of protection of enclosed contactors . 156
M.9.10 EMC . 156
M.9.11 Clearance and creepage distances . 156
Annex N (normative) Additional requirements and tests for equipment with protective
separation . 157
N.1 General . 157
N.2 Definitions. 157
N.3 Requirements . 157
N.3.1 Test method for implementing protective impedance . 157
N.3.2 Touch current measurement . 158
Annex O (informative) Load monitoring indicators . 160
O.1 General . 160
O.2 Indicators list . 160
...
La norme EN IEC 60947-4-1:2019 sur les appareils de commutation et de contrôle basse tension - Partie 4-1 : Contacteurs et démarreurs de moteur - Contacteurs et démarreurs électromécaniques, présente un champ d'application clair et pertinent pour les professionnels du secteur électrique. Elle concerne spécifiquement les contacteurs électromécaniques et les démarreurs, y compris le dispositif de commutation de protection des moteurs (MPSD), ainsi que les accessoires dédiés, tous destinés à être utilisés dans des circuits de distribution et des circuits de moteurs. Les points forts de cette norme résident dans sa structure révisée, qui offre une clarté améliorée sur les exclusions et les exigences de sécurité. L'intégration de nouvelles annexes, telles que l'Annexe L, qui traite des procédures d'évaluation pour la protection contre les surcharges électromécaniques, ainsi que l'Annexe M, qui aborde les besoins en courant continu pour les applications photovoltaïques, témoigne de son actualisation par rapport aux avancées technologiques et aux exigences modernes. La norme inclut également des aspects de sécurité bien définis, qui s'appliquent tant aux circuits d'énergie limitée qu'aux circuits électroniques, renforçant ainsi son rôle crucial dans la protection des installations électriques. En outre, la mesure de l'énergie d'enclenchement et les indicateurs de surveillance de charge ajoutent une dimension de fonctionnalité critique pour assurer la fiabilité du matériel connecté. L'alignement avec d'autres normes IEC telles que IEC 60947-1:2007 démontre une cohérence dans le cadre réglementaire, facilitant ainsi l'interopérabilité et la compréhension pour les utilisateurs finaux. Avec l'actualisation de cette quatrième édition, qui remplace la troisième édition de 2009 et son amendement 1 de 2012, EN IEC 60947-4-1:2019 se positionne comme une référence incontournable pour garantir le respect des meilleures pratiques en matière de sécurité et d'efficacité énergétique dans les installations électriques, tout en offrant une base solide pour les futures innovations dans le domaine des contacteurs et des démarreurs.
SIST EN IEC 60947-4-1:2019는 저전압 스위치기어 및 제어기어에 관한 국제 표준으로, 전자기 컨택터 및 모터 스타터에 대한 매우 중요한 기준을 제공합니다. 이 표준의 범위는 전자기 컨택터, 모터 보호 스위칭 장치(MPSD), 그리고 접촉기 릴레이의 작동기와 같은 장비에 적용됩니다. 이 장비들은 1,000V AC 또는 1,500V DC를 초과하지 않는 분배 회로, 모터 회로 및 기타 부하 회로에 연결되어야 합니다. 이 표준의 강점 중 하나는 기존 판과의 기술적 내용을 비교하여 모든 변화를 보여주는 Redline 버전을 포함하고 있다는 점입니다. 이를 통해 사용자는 변경 사항을 쉽게 이해할 수 있으며, 표준 적용에 필요한 정보를 효율적으로 파악할 수 있습니다. 또한, 여러 중요한 기술적 변경 사항이 포함되어 있어 사용자가 최신 기술 동향을 반영할 수 있도록 돕습니다. 특히, 이번 개정판은 모터 보호 스위칭 장치의 요구 사항, 안전 관련 측면, 전자 회로 및 제한 에너지 회로에 대한 평가 절차 등을 다루고 있어 그 안전성이 더욱 강화되었습니다. 새로운 부록도 추가되어 있어, 고효율 등급 달성을 위한 잠금 로터 전류의 영향을 고려하고, 태양광 응용을 위한 직류 요구 사항도 커버합니다. 이외에도, 부하 모니터링 지표와 같은 기능이 추가되어 전반적인 운영 효율성을 향상시키고, MPSD와 다른 단락 보호 장치 사이에서의 조정 문제를 해결하는 부록도 포함되어 있습니다. 이러한 다양한 기술적 내용은 SIST EN IEC 60947-4-1:2019가 전자기 컨택터 및 모터 스타터의 안전성과 성능을 보장하는 데 매우 중요한 역할을 하는 표준임을 보여줍니다. 결론적으로, SIST EN IEC 60947-4-1:2019는 저전압 스위치기어 및 제어기어 분야에서 필수적인 기준으로, 최신 기술 동향을 반영하고 안전성을 강화하는 다양한 내용을 포함하고 있어 모든 관련 기계 및 전기 엔지니어에게 중요한 참고자료가 될 것입니다.
The standard EN IEC 60947-4-1:2019 is a pivotal document within the domain of low-voltage switchgear and controlgear, particularly focusing on electromechanical contactors and motor-starters. Its scope effectively encompasses a wide array of equipment, including electromechanical contactors, motor protective switching devices (MPSD), and associated accessories designed for circuits where the rated voltage does not exceed 1,000 V AC or 1,500 V DC. This comprehensive coverage ensures that the standard is relevant for various industrial applications, establishing a robust framework for safety and performance. One of the notable strengths of the 2019 edition is its incorporation of significant technical changes, enhancing the clarity and efficacy of the standard. The revised scope structure and the editorial correction of notes and hanging paragraphs improve the usability of the document, making it more accessible to practitioners in the field. Additionally, the references to IEC 62683-1 and alignment with other related standards, such as IEC 60947-1, add a layer of coherence that strengthens its applicability across various contexts. Furthermore, the inclusion of safety aspects related to general operations, limited energy circuits, and electronic circuits demonstrates a thorough consideration of modern technology and its implications for safety. The introduction of provisions to address the impact of higher locked rotor currents signifies an industry shift towards accommodating higher efficiency classes, which is critical for promoting energy-efficient practices. New annexes, such as those covering direct current requirements for photovoltaic applications, short-circuit breaking tests of MPSD, and load monitoring indicators, represent forward-thinking adaptations to emerging technologies and standards. The standard's focus on the assessment procedures for electromechanical overload protection in safety applications ensures that safety remains paramount in operational contexts. Such provisions not only align with regulatory expectations but also bolster the reliability and performance of electrical equipment. In summary, EN IEC 60947-4-1:2019 stands out as a vital reference for professionals in the low-voltage switchgear and controlgear sector, offering a well-structured, comprehensive, and forward-looking approach to contactors and motor-starters. Its relevance in today’s evolving technological landscape, combined with its detailed technical revisions, solidifies its position as an essential resource for ensuring safety and efficiency in electrical installations.
Die Norm EN IEC 60947-4-1:2019, die sich mit Niederspannungs-Schaltgeräten und Steuerungen befasst, stellt einen wesentlichen Fortschritt in der Einführung und Anwendung elektromechanischer Schütze und Motorstarter dar. Der Anwendungsbereich dieser Norm umfasst nicht nur die elektromechanischen Kontakte und Motorstarter, sondern schließt auch wichtige Schutzvorrichtungen wie die Motor Protective Switching Device (MPSD) ein. Mit einer maximalen Nennspannung von 1.000 V AC oder 1.500 V DC ist diese Norm speziell für Anwendungen in Verteilungsschaltungen sowie Motor- und Lastschaltungen konzipiert. Ein starkes Merkmal dieser neuesten Auflage ist die umfassende technische Überarbeitung, die die Struktur und die Ausschlüsse des Anwendungsbereichs klarstellt. Insbesondere die Einführung des neuen Anhangs L zur Beurteilung von elektromechanischen Überlastschutzvorrichtungen für sicherheitsrelevante Anwendungen stellt sicher, dass Sicherheitsaspekte bei der Verwendung dieser Geräte an erster Stelle stehen. Dies zeigt sich auch in den zusätzlichen Sicherheitsanforderungen, die in der Norm behandelt werden, einschließlich der Betrachtung von allgemeinen Sicherheitsaspekten, begrenzten Energiekreisen und elektronischen Schaltungen. Die Norm enthält zudem wesentliche technische Änderungen, die auf die Notwendigkeit reagieren, den Einfluss von höheren Blockierstromwerten zu berücksichtigen, um hohe Effizienzklassen zu erreichen. Dies erfolgt durch innovative Regelungen und zusätzliche Anhangsabschnitte, wie den neuen Anhang M für Anforderungen an Gleichstromanwendungen, die insbesondere für Photovoltaikanlagen relevant sind. Zudem wird jetzt auch die Überwachung von Lastindikatoren in einem neuen Anhang O behandelt, was die Überwachung und Wartung von Schaltgeräten erheblich verbessert. Ein weiterer Vorteil der EN IEC 60947-4-1:2019 ist die Harmonisierung mit der Basisnorm IEC 60947-1, was den Anwendern die Integration in bestehende Systeme erleichtert und die Kompatibilität mit anderen Schutzvorrichtungen in Schaltkreisen (neu im Anhang Q behandelt) erhöht. Diese Koordination unter Kurzschlussbedingungen ist entscheidend für die Sicherheit und Zuverlässigkeit von Schaltanlagen. Insgesamt ist die Norm EN IEC 60947-4-1:2019 eine relevante und notwendige Dokumentation für die Entwicklung modernes Schaltgeräte. Ihre umfassenden technischen Inhalte und Aktualisierungen machen sie zu einer unverzichtbaren Ressource für Fachleute in der Elektrotechnik, die an der Gestaltung und dem Betrieb sicherer und effizienter elektrischer Systeme beteiligt sind.
EN IEC 60947-4-1:2019に関するレビュー EN IEC 60947-4-1:2019は、低電圧スイッチギアおよび制御機器に関する重要な国際標準であり、主にエレクトロメカニカル接触器およびモータースタータに焦点を当てています。この標準は、特にコイル回路専用の接点や、モータ保護スイッチングデバイス（MPSD）を含む接触器およびスタートに必要な装置を対象としており、0〜1,000 V ACおよび0〜1,500 V DCの配電回路での使用に適しています。 この文書の強みは、前版に比べて新たに適用された技術的変更にあります。特に、範囲の構造と除外項目、エディトリアルの修正、MPSDに関する要求事項、安全面に関する詳細な考慮が強調されており、電気回路と限られたエネルギー回路に対する評価手順が新たに追加されています。また、新しい附属書が導入されており、短絡条件下でのMPSDと他の保護デバイスとの協調についても言及されています。 この標準の関連性は、特にエネルギー効率の向上を目指す産業界におけるニーズに応じており、高効率クラスを達成するためのロックローター電流の影響を考慮した規定が新たに設けられています。さらに、太陽光発電アプリケーションの要件に関する直流要件の追加も、再生可能エネルギー分野の重要性の高まりを反映しています。 全体として、EN IEC 60947-4-1:2019は、低電圧スイッチギアおよび制御機器において、技術の進歩と安全性の確保に貢献するものであり、その内容は電気機器の製造と運用において不可欠な基準となることが期待されます。
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