Electromechanical switches for use in electronic equipment - Part 1: Generic specification (IEC 61020-1:2009)

for use in electrical and electronic appliances. Switches covered by this specification: 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 generic specification does not include keyboards and keypads which are intended for use in information-handling systems. Electromechanical key switches may be included under the scope of this generic specification. Switch families shall be described in any detail specifications that will reference this generic specification.

Elektrisch-mechanische Schalter zur Verwendung in Geräten der Elektrotechnik und Elektronik - Teil 1: Fachgrundspezifikation (IEC 61020-1:2009)

Interrupteurs électromécaniques pour équipements électriques et électroniques - Partie 1: Spécification générique (CEI 61020-1:2009)

La CEI 61020-1:2009 est destinée à assurer la cohérence des spécifications particulières applicables aux interrupteurs électromécaniques en spécifiant la terminologie, les symboles, les méthodes d'essai et autres informations nécessaires. Les interrupteurs relevant de la présente spécification: - sont des composants qui ouvrent, ferment ou commutent un circuit par le mouvement mécanique de leurs parties conductrices (contacts); - ont une tension assignée maximale de 480 V; - ont un courant assigné maximal de 63 A. Cette seconde édition constitue une révision technique et elle inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - Les exigences de la série CEI 60512 ont été intégrées. - En particulier les informations nécessaires par rapport aux connecteurs tels que spécifiés dans la CEI 60512 ont été introduits dans cette norme. En outre, les points suivants ont été mis à jour par rapport à la première édition: - des méthodes d'essai pour une description détaillée ont été révisées; - l'explication pour la méthode d'essai des forces de fonctionnement a été réécrite plus en détails; - la tension de mesure des rebonds a été révisée; - la durée de l'endurance électrique 'marche' dans le cycle de service a été harmonisée avec la CEI 61058; - des exigences par rapport aux risques au feu ont été supprimées; - des méthodes d'essai des connecteurs montés en surface basées sur des normes industrielles japonaises ont été ajoutées.

Elektromehanska stikala za elektronsko opremo - 1. del: Rodovna specifikacija (IEC 61020-1:2009)

General Information

Status
Published
Publication Date
08-Oct-2009
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Oct-2009
Due Date
06-Dec-2009
Completion Date
09-Oct-2009

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SLOVENSKI STANDARD
SIST EN 61020-1:2009
01-november-2009
Elektromehanska stikala za elektronsko opremo - 1. del: Rodovna specifikacija
(IEC 61020-1:2009)
Electromechanical switches for use in electronic equipment - Part 1: Generic
specification (IEC 61020-1:2009)
Elektrisch-mechanische Schalter zur Verwendung in Geräten der Elektrotechnik und
Elektronik - Teil 1: Fachgrundspezifikation (IEC 61020-1:2009)

Interrupteurs électromécaniques pour équipements électriques et électroniques - Partie

1: Spécification générique (CEI 61020-1:2009)
Ta slovenski standard je istoveten z: EN 61020-1:2009
ICS:
31.220.20 Stikala Switches
SIST EN 61020-1:2009 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61020-1:2009
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SIST EN 61020-1:2009
EUROPEAN STANDARD
EN 61020-1
NORME EUROPÉENNE
September 2009
EUROPÄISCHE NORM

ICS 31.220.20 Supersedes EN 196000:1992 + A1:2001, EN 196103:1998 and EN 196500:1993 + A1:2001

English version
Electromechanical switches
for use in electrical and electronic equipment -
Part 1: Generic specification
(IEC 61020-1:2009)
Interrupteurs électromécaniques Elektrisch-mechanische Schalter
pour équipements électriques zur Verwendung in Geräten
et électroniques - der Elektrotechnik und Elektronik -
Partie 1: Spécification générique Teil 1: Fachgrundspezifikation
(CEI 61020-1:2009) (IEC 61020-1:2009)

This European Standard was approved by CENELEC on 2009-08-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61020-1:2009 E
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SIST EN 61020-1:2009
EN 61020-1:2009 - 2 -
Foreword

The text of document 23J/325/FDIS, future edition 2 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

was approved by CENELEC as EN 61020-1 on 2009-08-01.

This European Standard supersedes EN 196000:1992 + A1:2001, EN 196103:1998 and EN 196500:1993

+ A1:2001.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-08-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 61020-1:2009 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 NOTE Harmonized as EN 60062:2005 (not modified).

IEC 60065 + A1 NOTE Harmonized as EN 60065:2002 (modified) + A1:2006 (modified).

IEC 60068-2-27 NOTE Harmonized as EN 60068-2-27:2009 (not modified).
IEC 60068-2-38 NOTE Harmonized as EN 60068-2-38:2009 (not modified).
IEC 60068-2-44 NOTE Harmonized as EN 60068-2-44:1995 (not modified).
IEC 60068-2-46 NOTE Harmonized as HD 323.2.46 S1:1988 (not modified).
IEC 60068-2-77 NOTE Harmonized as EN 60068-2-77:1999 (not modified).
IEC 60512 NOTE Harmonized in EN 60512 series (not modified).
IEC 60664-1 NOTE Harmonized as EN 60664-1:2007 (not modified).

IEC 60695-11-10 NOTE Harmonized as EN 60695-11-10:1999 + A1:2003 (not modified).

+ A1
IEC 60721-3-3 NOTE Harmonized as EN 60721-3-3:1995 + A2:1997 (not modified).
(+ A1) + A2
IEC 61190-1-3 NOTE Harmonized as EN 61190-1-3:2007 (not modified).
ISO/IEC 17050-1 NOTE Harmonized as EN ISO/IEC 17050-1:2004 (not modified).
ISO/IEC 17050-2 NOTE Harmonized as EN ISO/IEC 17050-2:2004 (not modified).
ISO 286-1 NOTE Harmonized as EN 20286-1:1993 (not modified).
ISO 1101 NOTE Harmonized as EN ISO 1101:2005 (not modified).
ISO 9001 NOTE Harmonized as EN ISO 9001:2008 (not modified).
__________
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SIST EN 61020-1:2009
- 3 - EN 61020-1:2009
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60027 Series Letter symbols to be used in electrical EN 60027 Series
technology
IEC 60050-581 2008 International Electrotechnical Vocabulary - - -
Part 581: Electromechanical components for
electronic equipment
IEC 60068-1 1988 Environmental testing - EN 60068-1 1994
A1 1992 Part 1: General and guidance
IEC 60068-2-1 2007 Environmental testing - EN 60068-2-1 2007
Part 2-1: Tests - Test A: Cold
IEC 60068-2-2 2007 Environmental testing - EN 60068-2-2 2007
Part 2-2: Tests - Test B: Dry heat
IEC 60068-2-6 2007 Environmental testing - EN 60068-2-6 2008
Part 2-6: Tests - Test Fc: Vibration
(sinusoidal)
IEC 60068-2-10 2005 Environmental testing - EN 60068-2-10 2005
Part 2-10: Tests - Test J and guidance: Mould
growth
IEC 60068-2-13 1983 Environmental testing - EN 60068-2-13 1999
Part 2: Tests - Test M: Low air pressure
IEC 60068-2-14 2009 Environmental testing - EN 60068-2-14 2009
Part 2-14: Tests - Test N: Change of
temperature
IEC 60068-2-17 1994 Environmental testing - EN 60068-2-17 1994
Part 2: Tests - Test Q: Sealing
IEC 60068-2-20 2008 Environmental testing - EN 60068-2-20 2008
Part 2-20: Tests - Test T: Test methods for
solderability and resistance to soldering heat
of devices with leads
IEC 60068-2-21 2006 Environmental testing - EN 60068-2-21 2006
Part 2-21: Tests - Test U: Robustness of
terminations and integral mounting devices
IEC 60068-2-30 2005 Environmental testing - EN 60068-2-30 2005
Part 2-30: Tests - Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
IEC 60068-2-42 2003 Environmental testing - EN 60068-2-42 2003
Part 2-42: Tests - Test Kc: Sulphur dioxide
test for contacts and connections
EN 60068-1 includes corr. October 1988 and A1:1992 to IEC 60068-1.
---------------------- Page: 5 ----------------------
SIST EN 61020-1:2009
EN 61020-1:2009 - 4 -
Publication Year Title EN/HD Year
IEC 60068-2-43 2003 Environmental testing - EN 60068-2-43 2003
Part 2-43: Tests - Test Kd: Hydrogen sulphide
test for contacts and connections
IEC 60068-2-45 1980 Environmental testing - EN 60068-2-45 1992
A1 1993 Part 2: Tests - Test Xa and guidance: A1 1993
Immersion in cleaning solvents
IEC 60068-2-49 1983 Environmental testing - - -
Part 2: Tests - Guidance to Test Kc: Sulphur
dioxide test for contacts and connections
2)
IEC 60068-2-58 1999 Environmental testing - EN 60068-2-58 1999
Part 2-58: Tests - Test Td: Test methods for
solderability, resistance to dissolution of
metallization and to soldering heat of surface
mounting devices (SMD)
IEC 60068-2-61 1991 Environmental testing - EN 60068-2-61 1993
Part 2: Test methods - Test Z/ABDM: Climatic
sequence
IEC 60068-2-68 1994 Environmental testing - EN 60068-2-68 1996
Part 2: Tests - Test L: Dust and sand
IEC 60068-2-78 2001 Environmental testing - EN 60068-2-78 2001
Part 2-78: Tests - Test Cab: Damp heat,
steady state
IEC 60529 1989 Degrees of protection provided by enclosures EN 60529 1991
(IP Code) + corr. May 1993
A1 1999 A1 2000
IEC 60617 data- Graphical symbols for diagrams - -
base
IEC 61058-1 (mod) 2000 Switches for appliances -
+ A1 2001 Part 1: General requirements EN 61058-1 2002
A2 2007 A2 2008
ISO 1000 1992 SI units and recommendations for the use of - -
their multiples and of certain other units

EN 60068-2-58 is superseded by EN 60068-2-58:2004, which is based on IEC 60068-2-58:2004.

---------------------- Page: 6 ----------------------
SIST EN 61020-1:2009
IEC 61020-1
Edition 2.0 2009-07
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
PRICE CODE
INTERNATIONALE
CODE PRIX
ICS 31.220.20 ISBN 2-8318-1053-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN 61020-1:2009
– 2 – 61020-1 © IEC:2009
CONTENTS

FOREWORD...........................................................................................................................5

INTRODUCTION.....................................................................................................................7

1 Scope and object..............................................................................................................8

1.1 Scope......................................................................................................................8

1.2 Object .....................................................................................................................8

2 General ............................................................................................................................8

2.1 Normative references ..............................................................................................8

2.2 Units and symbols .................................................................................................10

2.3 Terms and definitions ............................................................................................10

2.4 Preferred values....................................................................................................12

2.4.1 Clearance and creepage distances ............................................................12

2.5 Marking .................................................................................................................12

3 Quality assessment procedures......................................................................................12

4 Test and measurement procedures.................................................................................12

4.1 General .................................................................................................................12

4.1.1 Tolerances ................................................................................................13

4.1.2 Preconditioning..........................................................................................13

4.1.3 Mounting ...................................................................................................13

4.2 Standard atmospheric conditions...........................................................................13

4.3 General examination .............................................................................................13

4.3.1 Visual examination ....................................................................................13

4.3.2 Dimensions ...............................................................................................14

4.3.3 Dimensions, gauging .................................................................................14

4.3.4 Mass .........................................................................................................15

4.3.5 Functional operation ..................................................................................15

4.3.6 Operating characteristics ...........................................................................16

4.3.7 Contact bounce .........................................................................................18

4.4 Resistance measurements ....................................................................................19

4.4.1 Contact resistance – Millivolt level.............................................................19

4.4.2 Contact resistance – Specified current ......................................................21

4.4.3 Resistance from actuator to mounting bushing (surface)............................22

4.4.4 Insulation resistance..................................................................................23

4.5 Dielectric strength .................................................................................................23

4.5.1 Dielectric strength at standard atmospheric conditions ..............................23

4.5.2 Dielectric strength at low air pressure........................................................24

4.6 Heating .................................................................................................................25

4.6.1 Object .......................................................................................................25

4.6.2 Method ......................................................................................................25

4.6.3 Requirement..............................................................................................26

4.6.4 Details to be specified ...............................................................................26

4.7 Dynamic stress......................................................................................................26

4.7.1 Shock ........................................................................................................26

4.7.2 Vibration....................................................................................................27

4.7.3 Contact disturbance...................................................................................28

4.8 Mechanical strength ..............................................................................................28

4.8.1 Robustness of actuator..............................................................................28

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SIST EN 61020-1:2009
61020-1 © IEC:2009 – 3 –

4.8.2 Robustness of mounting bushing ...............................................................31

4.8.3 Robustness of screw mounting ..................................................................31

4.8.4 Robustness of terminations .......................................................................31

4.9 Mechanical endurance...........................................................................................32

4.9.1 Mechanical endurance – Standard atmospheric conditions ........................32

4.9.2 Mechanical endurance – Category temperature range ...............................33

4.10 Electrical endurance..............................................................................................33

4.10.1 Electrical endurance – Standard atmospheric conditions ...........................33

4.10.2 Electrical endurance – Upper category temperature...................................35

4.10.3 Electrical endurance – Category temperature range ..................................36

4.10.4 Electrical endurance – Low air pressure ....................................................36

4.10.5 Logic loads (TTL) ......................................................................................37

4.10.6 Low level endurance test ...........................................................................38

4.11 Overload ...............................................................................................................39

4.11.2 Electrical overload .....................................................................................39

4.11.3 Capacitive load switching ..........................................................................40

4.12 Environmental testing............................................................................................41

4.12.1 Climatic sequence .....................................................................................41

4.12.2 Damp heat, steady state............................................................................43

4.12.3 Rapid change of temperature.....................................................................44

4.12.4 Mould growth (resistance) .........................................................................44

4.12.5 Corrosion, industrial atmosphere ...............................................................45

4.12.6 Dust and sand ...........................................................................................46

4.12.7 Contact resistance stability........................................................................48

4.13 Soldering...............................................................................................................49

4.13.1 Solderability, wetting, solder bath method..................................................49

4.13.2 Solderability, wetting, soldering iron method..............................................50

4.13.3 Solderability, de-wetting ............................................................................51

4.13.4 Resistance to soldering heat, solder bath method......................................51

4.13.5 Resistance to soldering heat, soldering iron method ..................................52

4.14 Panel seal .............................................................................................................53

4.14.1 Drip – Proof ...............................................................................................53

4.14.2 Splash – Proof...........................................................................................53

4.14.3 Immersion .................................................................................................53

4.14.4 Submersion ...............................................................................................54

4.15 Enclosure seal.......................................................................................................55

4.15.1 Watertight immersion.................................................................................55

4.15.2 Resilient or hermetic seal ..........................................................................55

4.16 Fluid resistance.....................................................................................................56

4.16.1 Immersion in cleaning solvents (marking) ..................................................56

4.17 Fire hazard............................................................................................................56

4.18 Capacitance ..........................................................................................................56

4.18.1 Object .......................................................................................................56

4.18.2 Method ......................................................................................................56

4.18.3 Requirement..............................................................................................57

4.18.4 Details to be specified ...............................................................................57

4.19 Illumination............................................................................................................57

4.19.1 Chromaticity ..............................................................................................57

4.19.2 Transmittancy............................................................................................57

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SIST EN 61020-1:2009
– 4 – 61020-1 © IEC:2009

4.19.3 Temperature of illuminated surface............................................................58

4.20 Soldering for surface mounting switches ...............................................................58

4.20.1 Solderability, solder bath method (surface mounting switches) ..................58

4.20.2 Solderability, reflow method (surface mounting switches) ..........................59

4.20.3 Solderability, soldering iron method (surface mounting switches) ..............60

4.20.4 Resistance to soldering heat , solder bath method (surface mounting

switches) ...................................................................................................60

4.20.5 Resistance to soldering heat, reflow method (surface mounting

switches) ...................................................................................................61

4.20.6 Resistance to soldering heat, soldering iron method (surface

mounting switches)....................................................................................62

4.21 Mechanical strength (surface mounting switches)..................................................62

4.21.1 Substrate bending (surface mounting switches) .........................................62

4.21.2 Pull-off and push-off (surface mounting switches)......................................63

4.21.3 Shear (surface mounting switches) ............................................................64

4.21.4 Body strength (surface mounting switches)................................................64

Annex A (informative) Quality assurance procedures ...........................................................66

Bibliography..........................................................................................................................67

Figure 1 – Contact bounce test circuit...................................................................................18

Figure 2 – Typical trace of contact bounce............................................................................19

Figure 3 – Application of forces and torques for test 4.81......................................................30

Figure 4 – Submersion seal enclosure ..................................................................................55

Table 1 – Minimum wire length .............................................................................................25

Table 2 – Torque values for mounting screws .......................................................................31

Table 3 – Methods proposed for corrosion tests....................................................................46

Table 4 – Solderability, Bath method: Test severities (duration and temperature) .................50

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SIST EN 61020-1:2009
61020-1 © IEC:2009 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTROMECHANICAL SWITCHES
FOR USE IN ELECTRICAL AND ELECTRONIC EQUIPMENT –
Part 1: Generic specification
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 61020-1 has been prepared by subcommittee 23J: Switches for

appliances, of IEC technical committee 23: Electrical accessories.

This second edition cancels and replaces the first edition published in 1991. This second

edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition.

a) The requirements of the IEC 60512 series of standards have been integrated in this

second edition of IEC 61020-1. In particular the test methods, terminology, symbols and

other necessary information concerning switches as specified in IEC 60512 have been

implemented in this standard.

b) Additionally, the following items have been updated with respect to the first edition:

– test methods were reviewed for detailed description;
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SIST EN 61020-1:2009
– 6 – 61020-1 © IEC:2009

– the explanation for the test method of the operating force was rewritten in more detail;

– the test voltage for measurement for contact bounce was reviewed;
– the electrical endurance “ON” duration in the duty cycle was harmonized with
IEC 61058;
– the requirements for fire hazards have been deleted;
– testing methods of surface mounting switches based on the Japanese industrial
standard were added.
The text of this standard is based on the following documents:
FDIS Report on voting
23J/325/FDIS 23J/328/RVD

Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in

the data related to the specific publication. At this date, the publication will be

• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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SIST EN 61020-1:2009
61020-1 © IEC:2009 – 7 –
INTRODUCTION
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