SIST EN IEC 60947-5-1:2025
(Main)Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (IEC 60947-5-1:2024)
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (IEC 60947-5-1:2024)
IEC 60947-5-1:2024 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear.
It applies to control circuit devices having a rated voltage not exceeding 1 000 V AC (at a frequency not exceeding 1 000 Hz) or 600 V DC.
This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) update of the scope structure and exclusions;
b) requirements for control circuits;
c) update of the normal service conditions (e.g. shock and vibration);
d) update of information and marking requirements including environmental information requirements referencing IEC TS 63058:2021;
e) update of the constructional requirements and the corresponding tests considering safety aspects (e.g. artificial optical radiation, security aspects, limited energy source, stored charge energy circuit);
f) update of the EMC requirements according to the generic documents;
g) new requirements for reed contact magnetic switches in Annex D;
h) requirements for class II circuit devices achieved by double or reinforced insulation in Annex F;
i) update of pull-out tests in Annex G;
j) information requirements for audible signalling device in Annex J;
k) insertion of new Annex O.
Niederspannungsschaltgeräte - Teil 5-1: Steuergeräte und Schaltelemente - Elektromechanische Steuergeräte (IEC 60947-5-1:2024)
Appareillage à basse tension - Partie 5-1: Appareils et éléments de commutation pour circuits de commande - Appareils électromécaniques pour circuits de commande (IEC 60947-5-1:2024)
L'IEC 60947-5-1:2024 s'applique aux appareils pour circuits de commande et aux éléments de commutation destinés à la commande, à la signalisation, au verrouillage, etc., de l'appareillage.
Elle s'applique aux appareils pour circuits de commande dont la tension assignée ne dépasse pas 1 000 V en courant alternatif (à une fréquence qui ne dépasse pas 1 000 Hz) ou 600 V en courant continu.
Cette cinquième édition annule et remplace la quatrième édition parue en 2016. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) mise à jour de la structure du domaine d'application et des exclusions;
b) exigences pour les circuits de commande;
c) mise à jour des conditions normales d'emploi (chocs et vibrations, par exemple);
d) mise à jour des exigences relatives aux informations et eu marquage, y compris les exigences concernant les informations relatives à l'environnement qui font référence à l'IEC TS 63058:2021;
e) mise à jour des exigences de construction et des essais correspondants compte tenu des considérations de sûreté (par exemple rayonnement otique artificiel, aspects relatifs à la sécurité, source d'énergie limitée, circuit d'énergie de charge emmagasinée);
f) mise à jour des exigences de CEM conformément aux documents génériques;
g) nouvelles exigences pour les interrupteurs magnétiques à lames souples à l'Annexe D;
h) exigences relatives aux appareils de classe II pour circuits respectées par une double isolation ou une isolation renforcée à l'Annexe F;
i) mise à jour des essais de traction à l'Annexe G;
j) exigences relatives aux informations concernant les dispositifs de signalisation sonore à l'Annexe J;
k) insertion d'une nouvelle Annexe O.
La version française de cette norme n'a pas été soumise au vote.
Nizkonapetostne stikalne in krmilne naprave - 5-1. del: Krmilne naprave in stikalni elementi - Elektromehanske krmilne naprave (IEC 60947-5-1:2024)
Ta del standarda IEC 60947 se uporablja za krmilne naprave in stikalne elemente za krmiljenje, signalizacijo, spajanje itd. stikalnih in krmilnih naprav.
Uporablja se za krmilne naprave, katerih nazivna napetost ne presega 1000 V AC (pri največji frekvenci 1000 Hz) oziroma 600 V DsC.
Ta dokument se uporablja za posebne vrste krmilnih naprav, ki so okvirno navedene na spodnjem seznamu:
– ročno upravljana krmilna stikala; – elektromagnetna krmilna stikala, zakasnitvena ali trenutna; – releji kontaktorjev; – avtomatična krmilna stikala; – tlačna stikala; – temperaturno občutljiva stikala (termostati); – programatorji; – položajna stikala; – krmilna stikala, ki se upravljajo z delom stroja ali mehanizmom; – povezana oprema za tokokroge, na primer indikatorske luči itd.; – krmilne naprave s polprevodniškimi stikalnimi elementi; – krmilne naprave z vgrajenim enožičnim digitalnim komunikacijskim vmesnikom.
OPOMBA 1: Krmilne naprave in stikalni elementi se v tem dokumentu enakovredno imenujejo »oprema« oziroma »naprava«.
Ta dokument se uporablja tudi za posebne vrste stikalnih elementov krmilnih naprav, povezanih z drugimi napravami (njihove glavne tokokroge zajemajo drugi standardi), ki so navedene na spodnjem neizčrpnem seznamu:
– kontakti stikalne naprave (npr. kontaktor, odklopnik itd.), ki niso namenjeni izključno za uporabo s tuljavo te naprave; – kontakti za spajanje ogradnih vrat; – kontakti tokokrogov vrtljivih stikal; – kontakti tokokrogov preobremenitvenih relejev.
Ta dokument se ne uporablja za:
– releje, zajete v skupini standardov IEC 60255 ali IEC 61810; – samodejne električne krmilne naprave za gospodinjske in podobne namene; – uporabo krmilnih naprav in stikalnih elementov z uvedbo dodatnih ukrepov v eksplozivnih okoljih. To je podano v skupini standardov IEC 60079. Ta dokument ne obravnava posebnih zahtev glede barv ali vrednosti aktivacijske sile.
OPOMBA 2: Zahteve glede barv so podane v standardih IEC 60073 in CIE S004/E-2001.
Cilj tega dokumenta je navesti:
– definicije; – razvrstitev; – lastnosti; – informacije o izdelku; – običajne pogoje uporabe, montaže in transporta; – konstrukcijske in izvedbene zahteve, vključno z elektromagnetno združljivostjo (EMC) in vsemi povezanimi ukrepi za varnost izdelka; – preskuse za preverjanje zahtev in nazivnih lastnosti.
General Information
Relations
Overview
SIST EN IEC 60947-5-1:2025 (IEC 60947-5-1:2024) is the fifth edition of the international standard for electromechanical control circuit devices used with low-voltage switchgear and controlgear. It specifies safety, constructional, marking and test requirements for control circuit devices and switching elements intended for controlling, signalling, interlocking and similar functions. The standard applies to devices with rated voltages up to 1 000 V AC (≤1 000 Hz) or 600 V DC and replaces the 2016/2018 editions as a technical revision.
Key Topics and Technical Requirements
- Scope and exclusions - updated structure clarifying which control circuit devices are covered.
- Control circuit requirements - functional and safety requirements for circuits used in control, signalling and interlocking.
- Normal service conditions - revised environmental and mechanical conditions (e.g., shock and vibration) for reliability and lifetime assessment.
- Constructional safety and tests - enhanced tests and requirements addressing safety aspects such as artificial optical radiation, limited energy sources and stored charge energy circuits.
- EMC requirements - aligned with generic EMC documents and immunity/emission test standards (IEC/EN 61000 series).
- Marking and information - updated marking and environmental information requirements, referencing IEC TS 63058:2021.
- New and revised Annexes - additions and updates including:
- Reed contact magnetic switches (Annex D)
- Class II circuit devices with double/reinforced insulation (Annex F)
- Pull-out tests (Annex G)
- Audible signalling device information (Annex J)
- New Annex O and other informative/normative annexes
- Normative references - integrates related IEC documents (e.g., IEC 60947-1, IEC 60947-4-1, IEC 60947-5-2) and EMC, environmental and safety test standards.
Practical Applications and Who Uses This Standard
SIST EN IEC 60947-5-1 is essential for:
- Manufacturers of low-voltage control devices (pilot switches, contactor relays, indicator lights, audible signalling devices, reed and proximity-related components)
- Product designers and R&D teams ensuring compliant electrical, mechanical and EMC design
- Test laboratories and conformity assessment bodies performing type tests and verification
- Electrical installers and panel builders specifying compliant components for control panels, motor control centres and industrial automation
- Regulatory and compliance engineers applying the Low Voltage Directive and product safety requirements in EU/EFTA markets
Related Standards
Relevant companion standards and series referenced include:
- IEC 60947-1 (General rules for low-voltage switchgear and controlgear)
- IEC 60947-4-1 (Contactors and motor-starters)
- IEC 60947-5-2 (Proximity switches)
- IEC 61000 series (EMC testing and immunity)
- IEC 62471 (Photobiological safety)
This standard provides a presumption of conformity with applicable safety objectives when properly applied - a key reference for compliant, safe and robust low-voltage control circuit device design and testing.
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2025
Nadomešča:
SIST EN 60947-5-1:2018
SIST EN 60947-5-1:2018/AC:2020
Nizkonapetostne stikalne in krmilne naprave - 5-1. del: Krmilne naprave in stikalni
elementi - Elektromehanske krmilne naprave (IEC 60947-5-1:2024)
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching
elements - Electromechanical control circuit devices (IEC 60947-5-1:2024)
Niederspannungsschaltgeräte - Teil 5-1: Steuergeräte und Schaltelemente -
Elektromechanische Steuergeräte (IEC 60947-5-1:2024)
Appareillage à basse tension - Partie 5-1: Appareils et éléments de commutation pour
circuits de commande - Appareils électromécaniques pour circuits de commande (IEC
60947-5-1:2024)
Ta slovenski standard je istoveten z: EN IEC 60947-5-1:2025
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 60947-5-1
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2025
ICS 29.120.40; 29.130.20 Supersedes EN 60947-5-1:2017; EN 60947-5-
1:2017/AC:2020-05
English Version
Low-voltage switchgear and controlgear - Part 5-1: Control
circuit devices and switching elements - Electromechanical
control circuit devices
(IEC 60947-5-1:2024)
Appareillage à basse tension - Partie 5-1: Appareils et Niederspannungsschaltgeräte - Teil 5-1: Steuergeräte und
éléments de commutation pour circuits de commande - Schaltelemente - Elektromechanische Steuergeräte
Appareils électromécaniques pour circuits de commande (IEC 60947-5-1:2024)
(IEC 60947-5-1:2024)
This European Standard was approved by CENELEC on 2025-02-26. 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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60947-5-1:2025 E
European foreword
The text of document 121A/585/FDIS, future edition 5 of IEC 60947-5-1, 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) 2026-04-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-04-30
document have to be withdrawn
This document supersedes EN 60947-5-1:2017 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 60947-5-1:2024 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 60068-2-75:2014 NOTE Approved as EN 60068-2-75:2014 (not modified)
IEC 60073:2002 NOTE Approved as EN 60073:2002 (not modified)
IEC 60079 (series) NOTE Approved as EN IEC 60079-7 (series)
IEC 60255 (series) NOTE Approved as EN 60255 (series)
IEC 60947-5-3:2013 NOTE Approved as EN 60947-5-3:2013 (not modified)
IEC 60947-5-4:2002 NOTE Approved as EN 60947-5-4:2003 (not modified)
IEC 61000 (series) NOTE Approved as EN IEC 61000 (series)
IEC 61810 (series) NOTE Approved as EN 61810 (series)
IEC 61672-1:2013 NOTE Approved as EN 61672-1:2013 (not modified)
IEC 62246-1:2015 NOTE Approved as EN 62246-1:2015 (not modified)
IEC 62246-1-1:2018 NOTE Approved as EN IEC 62246-1-1:2018 (not modified)
IEC 62246-4:2023 NOTE Approved as EN IEC 62246-4:2023 (not modified)
IEC 62443 (series) NOTE Approved as EN IEC 62443 (series)
IEC/TR 63201:2019 NOTE Approved as CLC IEC/TR 63201:2020 (not modified)
ISO 7731:2003 NOTE Approved as EN ISO 7731:2008 (not modified)
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 60068-2-6 2007 Environmental testing - Part 2-6: Tests - Test EN 60068-2-6 2008
Fc: Vibration (sinusoidal)
IEC 60068-2-14 2023 Environmental testing - Part 2-14: Tests - EN IEC 60068-2-14 2023
Test N: Change of temperature
IEC 60068-2-27 2008 Environmental testing - Part 2-27: Tests - EN 60068-2-27 2009
Test Ea and guidance: Shock
IEC 60068-2-30 2005 Environmental testing - Part 2-30: Tests - EN 60068-2-30 2005
Test Db: Damp heat, cyclic (12 h + 12 h
cycle)
IEC 60068-2-78 2012 Environmental testing – Part 2-78: Tests – EN 60068-2-78 2013
Test Cab: Damp heat, steady state
IEC 60695-2-10 2021 Fire hazard testing - Part 2-10: Glowing/hot- EN IEC 60695-2-10 2021
wire based test methods - Glow-wire
apparatus and common test procedure
+ AC 2024
IEC 60695-2-11 2021 Fire hazard testing - Part 2-11: Glowing/hot- EN IEC 60695-2-11 2021
wire based test methods - Glow-wire
flammability test method for end-products
(GWEPT)
IEC 60695-2-12 2021 Fire hazard testing – Part 2-12: Glowing/hot- EN IEC 60695-2-12 2021
wire based test methods – Glow-wire
flammability index (GWFI) test method for
materials
IEC 60730-1 2022 Automatic electrical controls - Part 1: General EN 60730-1 2016
requirements
+ A1 2019
+ A2 2022
Publication Year Title EN/HD Year
IEC 60947-1 2020 Low-voltage switchgear and controlgear - EN IEC 60947-1 2021
Part 1: General rules
+ AC 2023
+ AC 2024
IEC 60947-4-1 2018 Low-voltage switchgear and controlgear - EN IEC 60947-4-1 2019
Part 4-1: Contactors and motor-starters -
Electromechanical contactors and motor-
starters
+ AC 2020
+ AC 2021
IEC 60947-5-2 2019 Low-voltage switchgear and controlgear - EN IEC 60947-5-2 2020
Part 5-2: Control circuit devices and switching
elements - Proximity switches
IEC 60947-5-5 1997 Low-voltage switchgear and controlgear -- EN 60947-5-5 1997
Part 5-5: Control circuit devices and switching
elements - Electrical emergency stop device
with mechanical latching function
+ A1 2005 + A1 2005
- - + A11 2013
+ A2 2016 + A2 2017
IEC 60999-1 1999 Connecting devices - Electrical copper EN 60999-1 2000
conductors - Safety requirements for screw-
type and screwless-type clamping units --
Part 1: General requirements and particular
requirements for clamping units for
conductors from 0,2 mm² up to 35 mm²
(included)
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) -- Part EN 61000-4-2 2009
4-2: Testing and measurement techniques -
Electrostatic discharge immunity test
IEC 61000-4-3 2020 Electromagnetic compatibility (EMC) -- Part EN IEC 61000-4-3 2020
4-3: Testing and measurement techniques -
Radiated, radio-frequency, electromagnetic
field immunity test
IEC 61000-4-4 2012 Electromagnetic compatibility (EMC) -- Part EN 61000-4-4 2012
4-4: Testing and measurement techniques -
Electrical fast transient/burst immunity test
IEC 61000-4-5 2014 Electromagnetic compatibility (EMC) - Part 4- EN 61000-4-5 2014
5: Testing and measurement techniques -
Surge immunity test
+ A1 2017 + A1 2017
IEC 61000-4-6 2023 Electromagnetic compatibility (EMC) -- Part EN IEC 61000-4-6 2023
4-6: Testing and measurement techniques -
Immunity to conducted disturbances, induced
by radio-frequency fields
IEC 61000-4-8 2009 Electromagnetic compatibility (EMC) -- Part EN 61000-4-8 2010
4-8: Testing and measurement techniques -
Power frequency magnetic field immunity test
Publication Year Title EN/HD Year
IEC 61000-4-11 2020 Electromagnetic compatibility (EMC) -- Part EN IEC 61000-4-11 2020
4-11: Testing and measurement techniques -
Voltage dips, short interruptions and voltage
variations immunity tests
+ AC 2020
+ AC 2022
IEC 61131-9 2022 Programmable controllers - Part 9: Single- EN IEC 61131-9 2022
drop digital communication interface for small
sensors and actuators (SDCI)
IEC 61140 2016 Protection against electric shock - Common EN 61140 2016
aspects for installation and equipment
IEC 62262 2002 Degrees of protection provided by enclosures EN 62262 2002
for electrical equipment against external
mechanical impacts (IK code)
+ A1 2021
IEC 62471 2006 Photobiological safety of lamps and lamp EN 62471 2008
systems
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
- - + A11 2020
+ A2 2019 + A2 2021
CISPR 32 2015 Electromagnetic compatibility of multimedia EN 55032 2015
equipment - Emission requirements
+ AC 2016
+ A1 2019 + A1 2020
- - + A11 2020
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 14159 2002 Safety of machinery – Hygiene requirements EN ISO 14159 2008
for the design of machinery
Annex ZZ
(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 standardisation request relating to
harmonised 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 harmonisation 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 ZZ.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 ZZ.1 — Correspondence between this European standard and Annex I of Directive
2014/35/EU [2014 OJ L96]
Clause(s) / sub-clause(s)
Safety objectives of
Remarks / Notes
Directive 2014/35/EU
of this EN
(1)(a) 6.1 d) to w), 6.2, 6.3,
8.1, Annex D, Annex F, Annex H,
Annex J, Annex K, Annex L, Annex M,
Annex N
(1)(b) 6.1 d) to w), 6.3, 6.5, Clause 7, 8.1, 8.2,
9.1, 9.2, 9.3, Annex C, Annex D,
Annex F, Annex J
(1)(c) 6.1 d) to w), 6.2, 6.3, 6.5
See also references given in (2)(a) to
(2)(d) and (3)(a) to (3)(c) in this Table.
(2)(a) 6.1 d) to v), 6.3, 6.5, 8.1, 8.2, 9.2, 9.3,
Annex D, Annex F
(2)(b) 8.1, 8.2, 9.2, 9.3, Annex G, Annex H,
Annex J
(2)(c) 6.1 w), 6.3, 6.5, 8.1, 8.2, 9.1, 9.2, 9.3,
Annex C, Annex D, Annex J, Annex N
(2)(d) 6.1 i), j), 6.3, 6.5, Clause 7, 8.1, 8.2, 8.4,
9.2, 9.3, Annex D, Annex F, Annex J
(3)(a) 6.1 g), m), 6.3, 6.5, Clause 7, 8.1, 8.2,
8.4, 9.1, 9.2, 9.3, Annex C, Annex D,
Annex F, Annex G, Annex J
(3)(b) 6.1 m), n), 6.3, 6.5, Clause 7, 8.1, 8.2,
8.3, 9.3, 9.4, Annex D, Annex F,
Annex N, Annex K
Clause(s) / sub-clause(s)
Safety objectives of
Remarks / Notes
Directive 2014/35/EU
of this EN
(3)(c) 6.1 e), o), p), 6.3, 6.5, 8.1, 8.2, 9.2, 9.3,
Annex D, Annex H, Annex J, Annex K,
Annex N
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 60947-5-1 ®
Edition 5.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low- voltage switchgear and controlgear –
Part 5-1: Control circuit devices and switching elements – Electromechanical
control circuit devices
Appareillage à basse tension –
Partie 5-1: Appareils et éléments de commutation pour circuits de commande –
Appareils électromécaniques pour circuits de commande
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.40, 29.130.20 ISBN 978-2-8322-8326-4
– 2 – IEC 60947-5-1:2024 © IEC 2024
CONTENTS
FOREWORD . 9
1 Scope . 11
2 Normative references . 12
3 Terms, definitions, symbols and abbreviated terms . 14
3.1 Terms and definitions . 14
3.1.1 General . 14
3.1.2 Basic terms and definitions . 14
3.1.3 Terms and definitions concerning automatic control switches . 16
3.1.4 Terms and definitions concerning manually operated control switches . 16
3.1.5 Terms and definitions concerning parts of control switches . 18
3.1.6 Terms and definitions concerning operation of contactor relays . 21
3.1.7 Terms and definitions concerning operation of pilot switches . 21
3.1.8 Terms and definitions concerning operation of rotary switches. 22
3.1.9 Terms and definitions concerning operation of mechanically operated
control switches . 22
3.1.10 Terms and definitions concerning reed contact magnetic switches . 25
3.1.11 Terms and definitions concerning Class II control circuit devices . 26
3.1.12 Terms and definitions concerning control circuit devices with integrally
connected cables . 26
3.1.13 Terms and definitions concerning semiconductor switching elements . 27
3.1.14 Terms and definitions concerning indicator lights, indicating towers and
audible signalling devices . 27
3.1.15 Terms and definitions concerning control switches with direct opening
action . 28
3.1.16 Terms and definitions concerning digital communication interface . 28
3.1.17 Alphabetical index of definitions. 29
3.2 Symbols and abbreviated terms . 33
4 Classification . 33
4.1 Contact elements . 33
4.2 Control switches . 35
4.3 Control circuit devices . 35
4.4 Time delay switching elements. 35
4.5 Control switch mounting . 35
5 Characteristics . 35
5.1 Summary of characteristics . 35
5.1.1 General . 35
5.1.2 Operation of a control switch . 35
5.2 Type of control circuit device or switching element . 36
5.2.1 Kind of control circuit device . 36
5.2.2 Kind of switching elements . 36
5.2.3 Number of poles . 36
5.2.4 Kind of current . 36
5.2.5 Interrupting medium . 36
5.2.6 Operating conditions . 37
5.3 Rated and limiting values for switching elements . 37
5.3.1 General . 37
5.3.2 Rated voltages (of a switching element). 37
IEC 60947-5-1:2024 © IEC 2024 – 3 –
5.3.3 Currents . 37
5.3.4 Rated frequency . 38
5.3.5 Vacant . 38
5.3.6 Characteristics under normal and abnormal load conditions . 38
5.3.7 Short-circuit characteristics – Rated conditional short-circuit current . 40
5.4 Utilization categories for switching elements . 40
5.5 Control circuits . 40
5.6 Vacant . 41
5.7 Vacant . 41
5.8 Vacant . 41
5.9 Vacant . 41
5.10 Electrically separated contact elements . 41
5.11 Actuating quantities for pilot switches . 41
5.12 Pilot switches having two or more contact elements . 41
6 Product information . 41
6.1 Nature of information . 41
6.2 Marking . 43
6.2.1 General . 43
6.2.2 Terminal identification and marking . 43
6.2.3 Functional markings. 43
6.2.4 Emergency stop . 43
6.2.5 Operating diagram . 43
6.2.6 Time delay markings . 44
6.3 Instructions for installation, operation and maintenance, decommissioning
and dismantling. 45
6.4 Environmental information . 45
6.4.1 Environmentally conscious design process (ECD process) . 45
6.4.2 Procedure to establish material declaration . 45
6.5 Additional information . 45
7 Normal service, mounting and transport conditions . 46
7.1 Normal service conditions . 46
7.1.1 Ambient air temperature . 46
7.1.2 Altitude . 46
7.1.3 Atmospheric conditions . 46
7.1.4 Shock and vibration . 46
7.2 Conditions during transport and storage . 46
7.3 Mounting . 46
7.3.1 General . 46
7.3.2 Mounting of single hole mounted devices . 46
8 Constructional and performance requirements . 48
8.1 Constructional requirements . 48
8.1.1 General . 48
8.1.2 Materials . 48
8.1.3 Current-carrying parts and their connections . 49
8.1.4 Clearances and creepage distances . 49
8.1.5 Actuator . 49
8.1.6 Indication of the contact position . 50
8.1.7 Conditions for control switches suitable for isolation . 50
8.1.8 Terminals . 50
– 4 – IEC 60947-5-1:2024 © IEC 2024
8.1.9 Vacant . 50
8.1.10 Provisions for protective earthing . 50
8.1.11 Enclosures for equipment . 50
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 Requirements for control circuit devices with artificial optical radiation . 50
8.1.15 Biological and chemical effects . 51
8.1.16 Hygienic design . 51
8.1.17 Security aspects . 51
8.1.18 Limited energy source . 51
8.1.19 Fault and abnormal conditions . 53
8.1.20 Stored charge energy circuit . 54
8.1.21 Embedded software . 54
8.2 Performance requirements . 54
8.2.1 Operating conditions . 54
8.2.2 Temperature-rise . 54
8.2.3 Dielectric properties . 54
8.2.4 Ability to make and break under normal and abnormal load conditions. 54
8.2.5 Conditional short-circuit current . 55
8.2.6 Vacant . 55
8.2.7 Additional requirements for control switches suitable for isolation . 55
8.3 Electromagnetic compatibility (EMC) . 55
8.3.1 General . 55
8.3.2 Immunity . 56
8.3.3 Emission . 56
8.4 Special requirements . 56
8.4.1 Additional requirements for reed contact magnetic switches . 56
8.4.2 Class II control circuit devices . 57
8.4.3 Additional requirements for control circuit devices with integrally
connected cables . 57
8.4.4 Additional requirements for semiconductor switching elements for
control circuit devices . 57
8.4.5 Special requirements for indicator lights, indicating towers and their
optional audible functions . 57
8.4.6 Special requirements for control switches with direct opening action . 57
8.4.7 Special requirements for mechanically linked contact elements . 57
8.4.8 Additional requirements for control circuit devices incorporating a built-
in communication interface (SDCI) . 57
9 Tests . 57
9.1 Kinds of test . 57
9.1.1 General . 57
9.1.2 Type tests . 57
9.1.3 Routine tests . 58
9.1.4 Sampling tests . 58
9.1.5 Special tests . 58
9.2 Compliance with constructional requirements . 59
9.2.1 General . 59
9.2.2 Test of materials to abnormal heat and fire . 59
9.2.3 Equipment . 59
9.2.4 Degrees of protection . 59
IEC 60947-5-1:2024 © IEC 2024 – 5 –
9.2.5 Mechanical and electrical properties of terminals . 60
9.2.6 Verification of actuating force (or torque) . 62
9.2.7 Verification of limitation of rotation (of a rotary switch) . 62
9.2.8 Conduit pull-out test, torque test and bending test with metallic conduits . 62
9.2.9 Test of earth continuity for protective earth . 62
9.2.10 Limited energy source test . 62
9.2.11 Breakdown of components . 63
9.2.12 Artificial optical radiation test . 63
9.2.13 Stored charge energy test . 64
9.3 Performance . 64
9.3.1 Test sequences . 64
9.3.2 General test conditions . 65
9.3.3 Performance under no-load, normal load and abnormal load conditions . 66
9.3.4 Performance under conditional short-circuit current . 70
9.4 Tests for EMC . 72
9.4.1 General . 72
9.4.2 Immunity . 72
9.4.3 Emission . 74
9.4.4 Test results and test report . 75
Annex A (normative) Electrical ratings based on utilization categories (see 4.1) . 76
Annex B (informative) Example of inductive test loads for DC contacts . 78
B.1 General . 78
B.2 Construction . 78
Annex C (normative) Special tests – Durability tests . 80
C.1 General . 80
C.1.1 Durability declaration . 80
C.1.2 Test procedures . 80
C.1.3 Failure criteria . 80
C.2 Mechanical durability . 81
C.2.1 General . 81
C.2.2 Test procedures . 81
C.3 Electrical durability . 81
C.3.1 General . 81
C.3.2 Test procedures . 81
Annex D (normative) Additional requirements for reed contact magnetic switches . 84
Annex E (informative) Items subject to agreement between manufacturer and user . 87
Annex F (normative) Class II control circuit devices – Requirements and tests . 88
Annex G (normative) Additional requirements for control circuit devices with integrally
connected cables . 93
Annex H (normative) Additional requirements for semiconductor switching elements
for control circuit devices . 97
Annex I (informative) . 103
Annex J (normative) Special requirements for indicator lights, indicating towers and
audible signalling devices . 104
Annex K (normative) Special requirements for control switches with direct opening
action. 110
Annex L (normative) Special requirements for mechanically linked contact elements . 115
– 6 – IEC 60947-5-1:2024 © IEC 2024
Annex M (normative) Terminal marking, distinctive number and distinctive letter for
control circuit devices . 118
M.1 General . 118
M.2 Terminal marking rule . 118
M.2.1 General . 118
M.2.2 Function digit . 118
M.2.3 Sequence digit . 118
M.2.4 Numbering method . 119
M.3 Distinctive number and distinctive letter . 119
M.3.1 General . 119
M.3.2 Distinctive number . 119
M.3.3 Distinctive letter . 119
M.4 Terminal numbering sequence . 120
M.5 Contactor relays designated by the distinctive letter E . 120
M.6 Contactor relays designated by distinctive letters X, Y or Z . 122
M.6.1 Contactor relays designated by the distinctive letter Z . 122
M.6.2 Contactor relays designated by the distinctive letter X . 122
M.6.3 Contactor relays designated by the distinctive letter Y . 122
Annex N (normative) Procedure to determine reliability data for electromechanical
devices in control circuits used in functional safety applications . 123
N.1 General . 123
N.1.1 Overview . 123
N.1.2 Object . 123
N.1.3 General requirements . 123
N.2 Terms, definitions and symbols . 123
N.3 Method based on durability test results . 123
N.3.1 General method . 123
N.3.2 Test requirements . 123
N.3.3 Number of samples . 124
N.3.4 Characterization of a failure mode . 124
N.3.5 Weibull modelling . 124
N.3.6 Useful life and upper limit of failure rate . 124
N.3.7 Reliability data . 124
N.4 Data information . 124
N.5 Example. 124
Annex O (normative) Additional requirements for control circuit devices incorporating
a built-in communication interface complying with IEC 61131-9 . 125
Bibliography . 127
Figure 1 – Operation of push-buttons . 23
Figure 2 – Difference e between the over-travel of the actuator and that of the contact
element. 23
Figure 3 – Examples of contact elements (schematic sketches) . 34
Figure 4 – Examples of the recommended method for drawing an operating diagram of
a rotary switch . 44
Figure 5 – Mounting hole diameter and dimensions of the key recess (if any) . 47
Figure 6 – Voltage drop measurement at contact point of the clamping unit or terminal . 61
Figure 7 – Test circuits for multi-pole control switches – Contacts of same polarity, not
electrically separated . 68
IEC 60947-5-1:2024 © IEC 2024 – 7 –
Figure 8 – Test circuits for multi-pole control switches – Electrically separated . 68
Figure 9 – Load L details for test conditions requiring different values of make and
d
break current and/or power factor (time constant) . 69
Figure 10 – Current/time limits for DC test loads . 69
Fi
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Frequently Asked Questions
SIST EN IEC 60947-5-1:2025 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching elements - Electromechanical control circuit devices (IEC 60947-5-1:2024)". This standard covers: IEC 60947-5-1:2024 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear. It applies to control circuit devices having a rated voltage not exceeding 1 000 V AC (at a frequency not exceeding 1 000 Hz) or 600 V DC. This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) update of the scope structure and exclusions; b) requirements for control circuits; c) update of the normal service conditions (e.g. shock and vibration); d) update of information and marking requirements including environmental information requirements referencing IEC TS 63058:2021; e) update of the constructional requirements and the corresponding tests considering safety aspects (e.g. artificial optical radiation, security aspects, limited energy source, stored charge energy circuit); f) update of the EMC requirements according to the generic documents; g) new requirements for reed contact magnetic switches in Annex D; h) requirements for class II circuit devices achieved by double or reinforced insulation in Annex F; i) update of pull-out tests in Annex G; j) information requirements for audible signalling device in Annex J; k) insertion of new Annex O.
IEC 60947-5-1:2024 applies to control circuit devices and switching elements intended for controlling, signalling, interlocking, etc., of switchgear and controlgear. It applies to control circuit devices having a rated voltage not exceeding 1 000 V AC (at a frequency not exceeding 1 000 Hz) or 600 V DC. This fifth edition cancels and replaces the fourth edition published in 2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) update of the scope structure and exclusions; b) requirements for control circuits; c) update of the normal service conditions (e.g. shock and vibration); d) update of information and marking requirements including environmental information requirements referencing IEC TS 63058:2021; e) update of the constructional requirements and the corresponding tests considering safety aspects (e.g. artificial optical radiation, security aspects, limited energy source, stored charge energy circuit); f) update of the EMC requirements according to the generic documents; g) new requirements for reed contact magnetic switches in Annex D; h) requirements for class II circuit devices achieved by double or reinforced insulation in Annex F; i) update of pull-out tests in Annex G; j) information requirements for audible signalling device in Annex J; k) insertion of new Annex O.
SIST EN IEC 60947-5-1:2025 is classified under the following ICS (International Classification for Standards) categories: 29.120.40 - Switches; 29.130.20 - Low voltage switchgear and controlgear. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN IEC 60947-5-1:2025 has the following relationships with other standards: It is inter standard links to SIST EN 60947-5-1:2018/AC:2020, SIST EN 60947-5-1:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 60947-5-1:2025 is associated with the following European legislation: EU Directives/Regulations: 2014/30/EU, 2014/35/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.
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SIST EN IEC 60947-5-1:2025는 저전압 개폐기 및 제어장치에 대한 표준으로서, 제어 회로 장치 및 스위칭 요소에 적용됩니다. 이 표준은 스위치기어 및 제어기어의 제어, 신호, 인터록킹 등을 위한 장치에 국한됩니다. 특히, 이 표준은 정격 전압이 1,000 V AC(주파수가 1,000 Hz 이하) 또는 600 V DC를 초과하지 않는 제어 회로 장치에 적용됩니다. 이 다섯 번째 판은 2016년에 발표된 네 번째 판을 취소하고 대체하며, 기술적 개정을 바탕으로 하고 있습니다. 주요 기술적 변화로는 스코프 구조 및 제외 사항의 업데이트, 제어 회로에 대한 요구 사항, 정상 작동 조건의 업데이트(충격 및 진동 포함), 환경 정보 요구 사항을 포함한 정보 및 표기 요구 사항의 업데이트가 있습니다. 또한, 안전 측면을 고려한 구조 요구 사항 및 해당 테스트의 업데이트, 일반 문서에 따른 EMC 요구 사항의 업데이트, Annex D에 포함된 리드 접점 자기 스위치에 대한 새로운 요구 사항, Annex F에서 이중 또는 강화 절연에 의해 달성되는 클래스 II 회로 장치에 대한 요구 사항도 주목할 만합니다. 그리고 Annex G에서의 인출 시험 업데이트, Annex J에 포함된 가청 신호 장치에 대한 정보 요구 사항, 새로운 Annex O의 삽입 등이 포함되어 있어, 이 표준은 저전압 제어 회로의 혁신과 안전성을 더욱 강화하였습니다. SIST EN IEC 60947-5-1:2025는 저전압 제어 장치 및 스위칭 요소에 대한 최신 기술적 요구 사항을 제시하고 있어, 관련 산업 분야에서의 실질적인 적용과 안전성 증대에 기여할 것으로 기대됩니다. 이는 특히 새로운 환경 기준을 반영하고, 안전성을 강조하여 전반적인 신뢰성을 높이는 데 기여합니다. 이러한 점에서 이 표준은 현대 전기 시스템에서 필수적으로 요구되는 요소들로 구성되어 있으므로, 업계에 필수적인 참고 자료로 자리 잡을 것입니다.
SIST EN IEC 60947-5-1:2025は、低電圧スイッチギアおよび制御機器に関する基準の重要な更新版です。この基準は、スイッチギアおよび制御機器の制御、信号、インターロックなどを目的とした制御回路装置とスイッチング要素に適用されます。特に、1,000V AC（周波数1,000Hz以下）または600V DCを超えない定格電圧を持つ制御回路装置に焦点を当てています。 この第5版は、2016年に公開された第4版を取り消し、置き換える形で技術的な改訂を含みます。この基準の強みは、構造の更新や除外項目の策定、制御回路に関する要求事項の明確化にあります。また、正常動作条件の更新（衝撃や振動に関する規定の見直し）や、環境情報のマーク要件（IEC TS 63058:2021を参照）に対する新たなガイドラインも含まれています。 さらに、安全性に配慮した構造要求とそれに関連する試験方法を見直し、人工光放射やエネルギー源に関する新しい基準を設定しています。これにより、製品の安全性を高めるための厳格な試験が義務付けられています。EMC要件の最新化も行われ、一般文書に従った新基準が適用されています。 新たに付録Dにはリード接点磁気スイッチに関する要求が追加され、付録Fでは二重絶縁または強化絶縁を用いたクラスII回路装置に関する規定があります。また、付録Gでは引き抜き試験の更新、付録Jでは音響信号装置に関する情報要件も含まれています。最後に、付録Oの挿入により、基準の全体的な整合性と実用性が向上しています。 この基準は、業界における最新の技術を反映し、制御回路装置の設計者や製造者、使用者にとって不可欠なドキュメントとなっています。SIST EN IEC 60947-5-1:2025は、低電圧機器の安全性と性能を確保するために必要なガイドラインとして、その関連性が一層高まっています。
The SIST EN IEC 60947-5-1:2025 standard represents a significant advancement in the field of low-voltage switchgear and controlgear, specifically focusing on control circuit devices and switching elements. The scope of this standard is explicitly defined, applying to devices designed for controlling, signalling, and interlocking within switchgear and controlgear systems. This is crucial for ensuring safety and reliability in electrical installations, establishing guidelines for devices operating under a rated voltage of up to 1,000 V AC and 600 V DC, which covers a substantial range of applications. One of the primary strengths of this standard is its comprehensive update over the previous edition from 2016, enhancing both clarity and applicability. The revision includes a restructuring of the scope and exclusions, thereby providing clearer guidance for manufacturers and users. Additionally, the emphasis on control circuit requirements promotes a better understanding of circuit functionalities and operational safety. The updated normal service conditions, which account for environmental factors such as vibration and shock, reflect the growing awareness of real-world operating conditions in which these devices function. Incorporating these considerations strengthens the practical relevance of the standard. The improvements in requirements for marking and information reflect new environmental standards, referencing IEC TS 63058:2021, which further align the standard with contemporary practices and regulatory expectations. Safety aspects have been foregrounded in this edition, with updates to constructional requirements and corresponding tests. Notably, considerations for artificial optical radiation and limits on energy sources address emerging safety concerns in the industry. Additionally, the introduction of new EMC requirements ensures the devices meet contemporary operational standards, thus mitigating potential interference issues which are crucial for modern electronic environments. Furthermore, the inclusion of specific requirements for reed contact magnetic switches and class II circuit devices enhances the standard's applicability to a broader range of technologies and user needs. The updates to pull-out tests and information requirements for audible signalling devices demonstrate a commitment to ensuring that practical performance testing is in alignment with modern safety standards. The addition of new annexes, such as Annex O, provides further resources and guidance, making this standard a well-rounded tool for stakeholders involved in low-voltage control systems. Overall, the SIST EN IEC 60947-5-1:2025 standard is a robust document that emphasizes safety, clarity, and practical application. Its relevance in today’s fast-evolving electrical landscape cannot be overstated, as it not only addresses current safety and operational needs but also anticipates future developments in technology and regulatory requirements. This standard serves as a vital resource for manufacturers, engineers, and compliance professionals within the switchgear and controlgear industry, ensuring that their practices meet the highest standards of safety and efficiency.
La norme SIST EN IEC 60947-5-1:2025, relative aux dispositifs de commande et éléments de commutation pour les matériels basse tension, se distingue par son ampleur et sa pertinence dans le domaine de la sécurité électrique. Cette cinquième édition, qui remplace la quatrième publiée en 2016, propose une révision technique approfondie qui renforce les critères de sécurité et d’efficacité des dispositifs de commande. L’application inclut des dispositifs de circuit de commande avec une tension nominale ne dépassant pas 1 000 V AC ou 600 V DC. Cela témoigne de sa capacité à couvrir une large gamme d’applications, garantissant ainsi la sécurité des utilisateurs. Les changements techniques significatifs par rapport à la précédente édition sont divers, notamment l’actualisation des exigences relatives aux circuits de commande et aux conditions de service normales, telles que les chocs et les vibrations. Cette norme introduit également des exigences rigoureuses pour la construction et les tests, prenant en compte des aspects de sécurité tels que le rayonnement optique artificiel et les circuits à énergie stockée. De plus, les exigences en matière de compatibilité électromagnétique (CEM) ont été mises à jour pour répondre aux documents génériques, ce qui souligne la pertinence croissante de cette norme dans un contexte technologique en évolution rapide. L'inclusion de nouvelles annexes, telles que l'Annexe D relative aux commutateurs magnétiques à contact reed et l'Annexe F concernant les dispositifs de classe II avec isolation double ou renforcée, démontre un engagement vers l'innovation. De plus, les exigences relatives aux tests de traction dans l'Annexe G et les exigences d’information pour les dispositifs de signalisation acoustique dans l'Annexe J apportent une valeur ajoutée substantielle aux professionnels du secteur. En somme, la norme SIST EN IEC 60947-5-1:2025 représente une avancée significative dans le domaine des dispositifs de commande électromécaniques, fournissant un cadre normatif robuste qui répond aux défis contemporains de l’électricité basse tension. Sa mise à jour technique renforce non seulement la sécurité, mais également l’efficacité des applications dans diverses industries.
Die Norm SIST EN IEC 60947-5-1:2025 behandelt wichtige Aspekte von Niederspannungs-Schaltgeräten und Steuergeräten, insbesondere für Steuerstromkreise und Schaltelemente, die für die Kontrolle, Signalgebung, Verriegelung und ähnliche Anwendungen in Schaltgeräten und Steuergeräten vorgesehen sind. Diese Norm ist von erheblicher Relevanz, da sie sicherstellt, dass die verwendeten Geräte sowohl sicher als auch zuverlässig in ihren jeweiligen Anwendungen funktionieren. Ein hervorstechendes Merkmal dieser Norm ist die Aktualisierung der Anforderungsstruktur und der Ausschlüsse, was die Klarheit und Anwendbarkeit der Norm verbessert. Insbesondere die Definition von Anforderungen für Steuerkreise stellt sicher, dass die Sicherheit und Funktionalität der Geräte gewahrt bleibt, während neue Anforderungen für Reed-Kontaktmagnet-Schalter in Anhang D eingeführt wurden, die die Flexibilität der Anwendung erhöhen. Die Aktualisierung der normalen Betriebsbedingungen, einschließlich der Berücksichtigung von Stößen und Vibrationen, ist eine bedeutende Verbesserung, die es den Herstellern ermöglicht, robustere Produkte zu gestalten. Zudem wurden die Informations- und Kennzeichnungsanforderungen überarbeitet und beinhalten jetzt Umweltinformationen, die auf IEC TS 63058:2021 verweisen. Dies zeigt ein verstärktes Bewusstsein für ökologische Aspekte im Bereich des elektrischen Apparatebaus. Die Überarbeitung der konstruktiven Anforderungen und der entsprechenden Sicherheitsprüfungen ist ein weiterer wesentlicher Vorteil dieser Norm, da sie dabei hilft, mögliche Gefahrenquellen zu identifizieren und zu eliminieren. Außerdem werden die Elektromagnetischen Verträglichkeitsanforderungen (EMV) gemäß den generischen Dokumenten aktualisiert, was für die Herstelle von entscheidender Bedeutung ist, um die Interferenz mit anderen Geräten zu minimieren. Ein zusätzlicher Gewinn ist die Möglichkeit, Geräte der Klasse II durch doppelte oder verstärkte Isolierung, wie in Anhang F gefordert, zu gewährleisten und die Einführung neuer Anforderungen für akustische Signalgeräte in Anhang J. Des Weiteren wurden die Anforderungen für Auszugsprüfungen in Anhang G aktualisiert, was die praktische Anwendung und Sicherheit der Geräte weiter verbessert. Die SIST EN IEC 60947-5-1:2025 ist somit eine umfassende und aktuelle Norm, die durch ihre detaillierten technischen Revisionen und klaren Anforderungen maßgeblich zur Sicherheit und Effizienz im Bereich der Niederspannungs-Schaltgeräte und Steuergeräte beiträgt.
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