EN IEC 61020-1:2019

Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification

This part of IEC 61020 specifies the terminology, symbols, test methods and other necessary information to provide consistency in detail specifications for electromechanical switches. This document relates to electromechanical switches intended for use in electrical and electronic appliances. Switches covered by this document: a) are devices which open, close, or change the connection of a circuit by the mechanical motion of conducting parts (contacts); b) have a maximum rated voltage of 480 V; c) have a maximum rated current of 63 A. This document does not include keyboards and keypads which are intended for use in information-handling systems. Electromechanical key switches can be included under the scope of this document. Switch families will be described in any detail specifications that reference this document. This document is a performance standard intended to describe evaluation methods to better clarify the capabilities of a switch. NOTE 1 Safety requirements for switches for household and similar fixed electrical installations are given in IEC 60669 (all parts). NOTE 2 Safety requirements for appliance switches are given in IEC 61058 (all parts).

Elektromechanische Schalter zur Verwendung in Geräten der Elektrotechnik und Elektronik – Teil 1: Fachgrundspezifikation

Interrupteurs électromécaniques pour équipements électriques et électroniques - Partie 1: Spécification générique

La présente partie de l’IEC 61020 spécifie la terminologie, les symboles, les méthodes d’essai et d’autres informations nécessaires pour assurer la cohérence des spécifications particulières applicables aux interrupteurs électromécaniques. Le présent document concerne les interrupteurs électromécaniques destinés à être utilisés dans les dispositifs électriques et électroniques. Les interrupteurs relevant du présent document: a) sont des dispositifs qui ouvrent, ferment ou commutent un circuit par le mouvement mécanique de leurs parties conductrices (contacts); b) ont une tension assignée maximale de 480 V; c) ont un courant assigné maximal de 63 A. Le présent document ne s’applique pas aux claviers prévus pour être utilisés dans les systèmes de traitement de l’information. Les interrupteurs électromécaniques à touche peuvent relever du domaine d’application du présent document. Les familles d’interrupteurs sont décrites dans des spécifications particulières faisant référence au présent document. Le présent document est une norme de qualité de fonctionnement destinée à décrire les méthodes d’appréciation afin de clarifier les capacités d’un interrupteur. NOTE 1 Les exigences relatives à la sécurité des interrupteurs pour installations électriques fixes domestiques et analogues sont données dans l’IEC 60669 (toutes les parties). NOTE 2 Les exigences relatives à la sécurité des interrupteurs pour appareils sont données dans l’IEC 61058 (toutes les parties).

Elektromehanska stikala za električno in elektronsko opremo - 1. del: Rodovna specifikacija (IEC 61020-1:2019)

Ta del standarda IEC 61020 določa terminologijo, simbole, preskusne metode in druge potrebne informacije, da se zagotovi doslednost v podrobnih specifikacijah za elektromehanska stikala. Ta dokument se nanaša na elektromehanska stikala, ki so namenjena uporabi v električnih in elektronskih napravah. Stikala, zajeta v tem dokumentu:
a) so naprave, ki odpirajo, zapirajo ali spreminjajo povezavo tokokroga z mehanskim premikanjem prevodnih delov (kontaktov);
b) imajo najvišjo nazivno napetost 480 V;
b) imajo najvišji nazivni tok 63 A.
Ta dokument ne vključuje tipkovnic in številčnic, ki so namenjene uporabi v sistemih za obdelavo informacij. Elektromehanska stikala na ključ se lahko vključi v področje uporabe tega dokumenta.
Družine stikal bodo opisane v podrobnih specifikacijah, ki se sklicujejo na ta dokument. Ta dokument je tehnični standard, ki opisuje metode ocenjevanja za boljšo pojasnitev zmogljivosti stikala.
OPOMBA 1: Varnostne zahteve za stikala za gospodinjske in podobne fiksne električne napeljave so podane v standardu IEC 60669 (vsi deli).
OPOMBA 2: Varnostne zahteve za stikala za aparate so podane v standardu IEC 61058 (vsi deli).

General Information

• Status: Published
• Publication Date: 14-Mar-2019
• Withdrawal Date: 19-Feb-2022
• ICS: 31.220.20 - Switches
• Technical Committee: CLC/SR 23J - Switches for appliances
• Drafting Committee: IEC/SC 23J - IEC_SC_23J
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 15-Mar-2019
• Completion Date: 15-Mar-2019
• Ref Project: SIST EN IEC 61020-1:2019 - Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification (IEC 61020-1:2019)

Relations

• Replaces: EN 61020-1:2009 - Electromechanical switches for use in electrical and electronic equipment - Part 1: Generic specification
• Effective Date: 19-Mar-2019

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61020-1:2019
01-julij-2019
Elektromehanska stikala za električno in elektronsko opremo - 1. del: Rodovna
specifikacija (IEC 61020-1:2019)
Electromechanical switches for use in electrical and electronic equipment - Part 1:
Generic specification (IEC 61020-1:2019)
Elektromechanische Schalter zur Verwendung in Geräten der Elektrotechnik und
Elektronik – Teil 1: Fachgrundspezifikation (IEC 61020-1:2019)
Interrupteurs électromécaniques pour équipements électriques et électroniques - Partie
1: Spécification générique (IEC 61020-1:2019)
Ta slovenski standard je istoveten z: EN IEC 61020-1:2019
ICS:
31.220.20 Stikala Switches
SIST EN 61020-1:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN 61020-1:2019
SIST EN 61020-1:2019
EUROPEAN STANDARD EN IEC 61020-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 31.220.20 Supersedes EN 61020-1:2009
English Version
Electromechanical switches for use in electrical and electronic
equipment - Part 1: Generic specification
(IEC 61020-1:2019)
Interrupteurs électromécaniques pour équipements Elektromechanische Schalter zur Verwendung in Geräten
électriques et électroniques - Partie 1: Spécification der Elektrotechnik und Elektronik - Teil 1:
générique Fachgrundspezifikation
(IEC 61020-1:2019) (IEC 61020-1:2019)
This European Standard was approved by CENELEC on 2019-02-20. 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 61020-1:2019 E

SIST EN 61020-1:2019
European foreword
The text of document 23J/443/CDV, future edition 3 of IEC 61020-1, prepared by SC 23J "Switches for
appliances" of IEC/TC 23 "Electrical accessories" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN IEC 61020-1:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-11-20
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-02-20
document have to be withdrawn
This document supersedes EN 61020-1:2009.
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.
Endorsement notice
The text of the International Standard IEC 61020-1:2019 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 60062:2016 NOTE Harmonized as EN 60062:2016 (not modified)
IEC 60065 NOTE Harmonized as EN 60065
IEC 60068-3-13 NOTE Harmonized as EN 60068-3-13
IEC 60512 (series) NOTE Harmonized as EN IEC 60512 (series)
IEC 60664-1 NOTE Harmonized as EN 60664-1
IEC 60695-11-10 NOTE Harmonized as EN 60695-11-10
IEC 61190-1-3 NOTE Harmonized as EN IEC 61190-1-3
ISO/IEC 17050-1 NOTE Harmonized as EN ISO/IEC 17050-1
ISO/IEC 17050-2 NOTE Harmonized as EN ISO/IEC 17050-2
ISO 129-1 NOTE Harmonized as EN ISO 129-1
ISO 286-1 NOTE Harmonized as EN ISO 286-1
ISO 1101 NOTE Harmonized as EN ISO 1101
ISO 9001 NOTE Harmonized as EN ISO 9001

Under preparation. Stage at the time of publication: prEN ISO 129-1:2018.
SIST EN 61020-1:2019
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 60027 series Letter symbols to be used in electrical EN IEC 60027 series
technology
IEC 60050-581 -  International Electrotechnical Vocabulary - Part - -
581: Electromechanical components for
electronic equipment
IEC 60068-1 2013 Environmental testing - Part 1: General and EN 60068-1 2014
guidance
IEC 60068-2-1 -  Environmental testing - Part 2-1: Tests - Test A: EN 60068-2-1 -
Cold
IEC 60068-2-2 -  Environmental testing - Part 2-2: Tests - Test B: EN 60068-2-2 -
Dry heat
IEC 60068-2-6 -  Environmental testing - Part 2-6: Tests - Test EN 60068-2-6 -
Fc: Vibration (sinusoidal)
IEC 60068-2-10 -  Environmental testing - Part 2-10: Tests - Test J EN 60068-2-10 -
and guidance: Mould growth
IEC 60068-2-11 -  Basic environmental testing procedures - Part EN 60068-2-11 -
2-11: Tests - Test Ka: Salt mist
IEC 60068-2-13 -  Basic environmental testing procedures - Part EN 60068-2-13 -
2-13: Tests - Test M: Low air pressure
IEC 60068-2-14 -  Environmental testing - Part 2-14: Tests - Test EN 60068-2-14 -
N: Change of temperature
IEC 60068-2-17 -  Basic environmental testing procedures - Part EN 60068-2-17 -
2-17: Tests - Test Q: Sealing
IEC 60068-2-20 2008 Environmental testing - Part 2-20: Tests - Test EN 60068-2-20 2008
T: Test methods for solderability and resistance
to soldering heat of devices with leads
IEC 60068-2-21 -  Environmental testing - Part 2-21: Tests - Test EN 60068-2-21 -
U: Robustness of terminations and integral
mounting devices
IEC 60068-2-27 -  Environmental testing - Part 2-27: Tests - Test EN 60068-2-27 -
Ea and guidance: Shock
SIST EN 61020-1:2019
IEC 60068-2-30 2005 Environmental testing - Part 2-30: Tests - Test EN 60068-2-30 2005
Db: Damp heat, cyclic (12 h + 12 h cycle)
IEC 60068-2-38 2009 Environmental testing - Part 2-38: Tests - Test EN 60068-2-38 2009
Z/AD: Composite temperature/humidity cyclic
test
IEC 60068-2-42 -  Environmental testing - Part 2-42: Tests - Test EN 60068-2-42 -
Kc: Sulphur dioxide test for contacts and
connections
IEC 60068-2-43 -  Environmental testing - Part 2-43: Tests - Test EN 60068-2-43 -
Kd: Hydrogen sulphide test for contacts and
connections
IEC 60068-2-45 -  Basic environmental testing procedures - Part EN 60068-2-45 -
2-45: Tests - Test XA and guidance: Immersion
in cleaning solvents
IEC 60068-2-46 -  Basic environmental testing procedures - Part HD 323.2.46 S1 -
2-46: Tests - Guidance to test Kd: Hydrogen
sulphide test for contacts and connections
IEC 60068-2-49 -  Basic environmental testing procedures - Part - -
2-49: Tests - Guidance to test Kc: Sulphur
dioxide test for contacts and connections
IEC 60068-2-58 2015 Environmental testing - Part 2-58: Tests - Test EN 60068-2-58 2015
Td: Test methods for solderability, resistance to
dissolution of metallization and to soldering
heat of surface mounting devices (SMD)
+ A1 2017  + A1 2018
IEC 60068-2-61 1991 Environmental testing - Part 2-61: Test methods EN 60068-2-61 1993
- Test Z/ABDM: Climatic sequence
IEC 60068-2-68 1994 Environmental testing - Part 2-68: Tests - Test EN 60068-2-68 1996
L: Dust and sand
IEC 60068-2-77 -  Environmental testing - Part 2-77: Tests - Test EN 60068-2-77 -
77: Body strength and impact shock
IEC 60068-2-78 -  Environmental testing - Part 2-78: Tests - Test EN 60068-2-78 -
Cab: Damp heat, steady state
IEC 60529 -  Degrees of protection provided by enclosures - -
(IP Code)
IEC 60617 -  Graphical symbols for diagrams (available at: - -
http://std.iec.ch/iec60617)
IEC 60721-3-3 -  Classification of environmental conditions - Part EN 60721-3-3 -
3: Classification of groups of environmental
parameters and their severities - Section 3:
Stationary use at weather protected locations
IEC 61058-1 2016 Switches for appliances - Part 1: General EN IEC 61058-1 2018
requirements
IEC 61058-1-1 2016 Switches for appliances - Part 1-1: EN 61058-1-1 2016
Requirements for mechanical switches
ISO 80000-1 -  Quantities and units - Part 1: General - -

SIST EN 61020-1:2019
IEC 61020-1 ®
Edition 3.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical switches for use in electrical and electronic equipment –

Part 1: Generic specification
Interrupteurs électromécaniques pour équipements électriques et électroniques –

Partie 1: Spécification générique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.20 ISBN 978-2-8322-6388-4

SIST EN 61020-1:2019
– 2 – IEC 61020-1:2019 © IEC 2019
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, units and symbols . 11
3.1 Terms and definitions . 11
3.2 Units and symbols. 13
4 Test and measurement procedures . 14
4.1 General . 14
4.1.1 General requirements to tests and measuring procedures . 14
4.1.2 Tolerances . 14
4.1.3 Preconditioning . 14
4.1.4 Mounting . 14
4.2 Standard atmospheric conditions . 14
4.3 General examination . 15
4.3.1 Visual examination . 15
4.3.2 Dimensions . 15
4.3.3 Dimensions, gauging . 16
4.3.4 Mass . 16
4.3.5 Functional operation . 17
4.3.6 Operating characteristics . 17
4.3.7 Contact bounce . 21
4.4 Resistance measurements . 23
4.4.1 Contact resistance – Millivolt level . 23
4.4.2 Contact resistance – Specified current . 26
4.4.3 Resistance from actuator to mounting bushing (surface) . 27
4.4.4 Insulation resistance . 28
4.5 Withstand voltage . 29
4.5.1 Withstand voltage at standard atmospheric conditions . 29
4.5.2 Withstand voltage at low air pressure . 30
4.6 Heating . 31
4.6.1 Object .
...

SLOVENSKI STANDARD
01-julij-2019
Elektromehanska stikala za električno in elektronsko opremo - 1. del: Rodovna
specifikacija (IEC 61020-1:2019)
Electromechanical switches for use in electrical and electronic equipment - Part 1:
Generic specification (IEC 61020-1:2019)
Elektromechanische Schalter zur Verwendung in Geräten der Elektrotechnik und
Elektronik – Teil 1: Fachgrundspezifikation (IEC 61020-1:2019)
Interrupteurs électromécaniques pour équipements électriques et électroniques - Partie
1: Spécification générique (IEC 61020-1:2019)
Ta slovenski standard je istoveten z: EN IEC 61020-1:2019
ICS:
31.220.20 Stikala Switches
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61020-1

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2019
ICS 31.220.20 Supersedes EN 61020-1:2009
English Version
Electromechanical switches for use in electrical and electronic
equipment - Part 1: Generic specification
(IEC 61020-1:2019)
Interrupteurs électromécaniques pour équipements Elektromechanische Schalter zur Verwendung in Geräten
électriques et électroniques - Partie 1: Spécification der Elektrotechnik und Elektronik - Teil 1:
générique Fachgrundspezifikation
(IEC 61020-1:2019) (IEC 61020-1:2019)
This European Standard was approved by CENELEC on 2019-02-20. 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 61020-1:2019 E

European foreword
The text of document 23J/443/CDV, future edition 3 of IEC 61020-1, prepared by SC 23J "Switches for
appliances" of IEC/TC 23 "Electrical accessories" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN IEC 61020-1:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2019-11-20
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-02-20
document have to be withdrawn
This document supersedes EN 61020-1:2009.
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.
Endorsement notice
The text of the International Standard IEC 61020-1:2019 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 60062:2016 NOTE Harmonized as EN 60062:2016 (not modified)
IEC 60065 NOTE Harmonized as EN 60065
IEC 60068-3-13 NOTE Harmonized as EN 60068-3-13
IEC 60512 (series) NOTE Harmonized as EN IEC 60512 (series)
IEC 60664-1 NOTE Harmonized as EN 60664-1
IEC 60695-11-10 NOTE Harmonized as EN 60695-11-10
IEC 61190-1-3 NOTE Harmonized as EN IEC 61190-1-3
ISO/IEC 17050-1 NOTE Harmonized as EN ISO/IEC 17050-1
ISO/IEC 17050-2 NOTE Harmonized as EN ISO/IEC 17050-2
ISO 129-1 NOTE Harmonized as EN ISO 129-1
ISO 286-1 NOTE Harmonized as EN ISO 286-1
ISO 1101 NOTE Harmonized as EN ISO 1101
ISO 9001 NOTE Harmonized as EN ISO 9001

Under preparation. Stage at the time of publication: prEN ISO 129-1:2018.
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 60027 series Letter symbols to be used in electrical EN IEC 60027 series
technology
IEC 60050-581 -  International Electrotechnical Vocabulary - Part - -
581: Electromechanical components for
electronic equipment
IEC 60068-1 2013 Environmental testing - Part 1: General and EN 60068-1 2014
guidance
IEC 60068-2-1 -  Environmental testing - Part 2-1: Tests - Test A: EN 60068-2-1 -
Cold
IEC 60068-2-2 -  Environmental testing - Part 2-2: Tests - Test B: EN 60068-2-2 -
Dry heat
IEC 60068-2-6 -  Environmental testing - Part 2-6: Tests - Test EN 60068-2-6 -
Fc: Vibration (sinusoidal)
IEC 60068-2-10 -  Environmental testing - Part 2-10: Tests - Test J EN 60068-2-10 -
and guidance: Mould growth
IEC 60068-2-11 -  Basic environmental testing procedures - Part EN 60068-2-11 -
2-11: Tests - Test Ka: Salt mist
IEC 60068-2-13 -  Basic environmental testing procedures - Part EN 60068-2-13 -
2-13: Tests - Test M: Low air pressure
IEC 60068-2-14 -  Environmental testing - Part 2-14: Tests - Test EN 60068-2-14 -
N: Change of temperature
IEC 60068-2-17 -  Basic environmental testing procedures - Part EN 60068-2-17 -
2-17: Tests - Test Q: Sealing
IEC 60068-2-20 2008 Environmental testing - Part 2-20: Tests - Test EN 60068-2-20 2008
T: Test methods for solderability and resistance
to soldering heat of devices with leads
IEC 60068-2-21 -  Environmental testing - Part 2-21: Tests - Test EN 60068-2-21 -
U: Robustness of terminations and integral
mounting devices
IEC 60068-2-27 -  Environmental testing - Part 2-27: Tests - Test EN 60068-2-27 -
Ea and guidance: Shock
IEC 60068-2-30 2005 Environmental testing - Part 2-30: Tests - Test EN 60068-2-30 2005
Db: Damp heat, cyclic (12 h + 12 h cycle)
IEC 60068-2-38 2009 Environmental testing - Part 2-38: Tests - Test EN 60068-2-38 2009
Z/AD: Composite temperature/humidity cyclic
test
IEC 60068-2-42 -  Environmental testing - Part 2-42: Tests - Test EN 60068-2-42 -
Kc: Sulphur dioxide test for contacts and
connections
IEC 60068-2-43 -  Environmental testing - Part 2-43: Tests - Test EN 60068-2-43 -
Kd: Hydrogen sulphide test for contacts and
connections
IEC 60068-2-45 -  Basic environmental testing procedures - Part EN 60068-2-45 -
2-45: Tests - Test XA and guidance: Immersion
in cleaning solvents
IEC 60068-2-46 -  Basic environmental testing procedures - Part HD 323.2.46 S1 -
2-46: Tests - Guidance to test Kd: Hydrogen
sulphide test for contacts and connections
IEC 60068-2-49 -  Basic environmental testing procedures - Part - -
2-49: Tests - Guidance to test Kc: Sulphur
dioxide test for contacts and connections
IEC 60068-2-58 2015 Environmental testing - Part 2-58: Tests - Test EN 60068-2-58 2015
Td: Test methods for solderability, resistance to
dissolution of metallization and to soldering
heat of surface mounting devices (SMD)
+ A1 2017  + A1 2018
IEC 60068-2-61 1991 Environmental testing - Part 2-61: Test methods EN 60068-2-61 1993
- Test Z/ABDM: Climatic sequence
IEC 60068-2-68 1994 Environmental testing - Part 2-68: Tests - Test EN 60068-2-68 1996
L: Dust and sand
IEC 60068-2-77 -  Environmental testing - Part 2-77: Tests - Test EN 60068-2-77 -
77: Body strength and impact shock
IEC 60068-2-78 -  Environmental testing - Part 2-78: Tests - Test EN 60068-2-78 -
Cab: Damp heat, steady state
IEC 60529 -  Degrees of protection provided by enclosures - -
(IP Code)
IEC 60617 -  Graphical symbols for diagrams (available at: - -
http://std.iec.ch/iec60617)
IEC 60721-3-3 -  Classification of environmental conditions - Part EN 60721-3-3 -
3: Classification of groups of environmental
parameters and their severities - Section 3:
Stationary use at weather protected locations
IEC 61058-1 2016 Switches for appliances - Part 1: General EN IEC 61058-1 2018
requirements
IEC 61058-1-1 2016 Switches for appliances - Part 1-1: EN 61058-1-1 2016
Requirements for mechanical switches
ISO 80000-1 -  Quantities and units - Part 1: General - -

IEC 61020-1 ®
Edition 3.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electromechanical switches for use in electrical and electronic equipment –

Part 1: Generic specification
Interrupteurs électromécaniques pour équipements électriques et électroniques –

Partie 1: Spécification générique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.20 ISBN 978-2-8322-6388-4

– 2 – IEC 61020-1:2019 © IEC 2019
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, units and symbols . 11
3.1 Terms and definitions . 11
3.2 Units and symbols. 13
4 Test and measurement procedures . 14
4.1 General . 14
4.1.1 General requirements to tests and measuring procedures . 14
4.1.2 Tolerances . 14
4.1.3 Preconditioning . 14
4.1.4 Mounting . 14
4.2 Standard atmospheric conditions . 14
4.3 General examination . 15
4.3.1 Visual examination . 15
4.3.2 Dimensions . 15
4.3.3 Dimensions, gauging . 16
4.3.4 Mass . 16
4.3.5 Functional operation . 17
4.3.6 Operating characteristics . 17
4.3.7 Contact bounce . 21
4.4 Resistance measurements . 23
4.4.1 Contact resistance – Millivolt level . 23
4.4.2 Contact resistance – Specified current . 26
4.4.3 Resistance from actuator to mounting bushing (surface) . 27
4.4.4 Insulation resistance . 28
4.5 Withstand voltage . 29
4.5.1 Withstand voltage at standard atmospheric conditions . 29
4.5.2 Withstand voltage at low air pressure . 30
4.6 Heating . 31
4.6.1 Object .
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