Installation couplers intended for permanent connection in fixed installations (IEC 61535:2019)

This document applies to two-wire, up to five-wire installation couplers, including earth, if
provided, with a rated voltage up to and including 500 V AC or DC and a rated connecting
capacity up to and including 10 mm2 for permanent connection in electrical installations.
Installation couplers with additional contacts for voltages other than mains voltages are
outside the scope of this document.
An installation coupler consists of an installation female connector and an installation male
connector for permanent connection not intended to be engaged or disengaged under load
nor to be engaged or disengaged other than during first installation or during reconfiguration
or maintenance of the wiring system in which installation couplers have been installed. This
means that installation couplers are only intended for infrequent use.
Installation couplers are not suitable for use in place of socket-outlet systems. Installation
couplers are not suitable for use in place of devices for connecting luminaires (DCLs)
according to IEC 61995 (all parts) or in place of luminaire supporting couplers (LSCs).
Installation couplers complying with this document are suitable for use at ambient
temperatures not normally exceeding +40 °C, but their average over a period does not exceed
+35 °C, with a lower limit of the ambient air temperature of −5 °C, either for indoor or outdoor
use.
NOTE 1 Additional tests for use in cold climates are under consideration.
NOTE 2 For other temperatures, necessary information can be given in the manufacturer's installation
instructions.
In locations where special conditions prevail, as in ships, vehicles and the like and in
hazardous locations, for example where explosions are liable to occur, special constructions
can be required.
NOTE 3 Installation couplers are intended to be installed by instructed or skilled persons.

Installationssteckverbinder für dauernde Verbindung in festen Installationen (IEC 61535:2019)

Coupleurs d'installation pour connexions permanentes dans les installations fixes (IEC 61535:2019)

IEC 61535:2019 est disponible sous forme de IEC 61535:2019 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.IEC 61535:2019 s'applique aux coupleurs d'installation comportant de deux à cinq conducteurs, y compris le conducteur de terre (le cas échéant), de tension assignée jusqu'à 500 V inclus en courant alternatif ou en courant continu et de capacité de connexion assignée jusqu'à 10 mm2 inclus, pour connexion permanente dans les installations électriques. Les coupleurs d'installation avec des contacts supplémentaires pour des tensions autres que la tension d'alimentation du réseau ne relèvent pas du domaine d'application du présent document. Cette deuxième édition annule et remplace la première édition parue en 2009 et l'Amendement 1:2012. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - extension du domaine d'application à l'application en courant continu; - ajout des exigences supplémentaires en matière d'application en courant continu (marquage, etc.), aucune procédure d'essai supplémentaire n'a été jugée nécessaire; toutefois, certaines modifications du texte normatif étaient nécessaires; - modifications et amélioration du champ d'application des coupleurs d'installation aux applications extérieures; - ajout d'une plage de températures appropriée; - mise à jour de la liste des références normatives, modifiée pour inclure des références non datées, lorsque cela était possible.

Inštalacijske spojke za trajni spoj v fiksnih napeljavah (inštalacijah) (IEC 61535:2019)

General Information

Status
Published
Public Enquiry End Date
29-Nov-2018
Publication Date
26-Feb-2020
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Dec-2019
Due Date
28-Feb-2020
Completion Date
27-Feb-2020

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SLOVENSKI STANDARD
SIST EN IEC 61535:2020
01-april-2020
Nadomešča:
SIST EN 61535:2009
SIST EN 61535:2009/A1:2013
Inštalacijske spojke za trajni spoj v fiksnih napeljavah (inštalacijah) (IEC
61535:2019)

Installation couplers intended for permanent connection in fixed installations (IEC

61535:2019)

Installationssteckverbinder für dauernde Verbindung in festen Installationen (IEC

61535:2019)

Coupleurs d'installation pour connexions permanentes dans les installations fixes (IEC

61535:2019)
Ta slovenski standard je istoveten z: EN IEC 61535:2019
ICS:
29.120.30 Vtiči, vtičnice, spojke Plugs, socket-outlets,
couplers
SIST EN IEC 61535:2020 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN IEC 61535:2020
---------------------- Page: 2 ----------------------
SIST EN IEC 61535:2020
EUROPEAN STANDARD EN IEC 61535
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2019
ICS 29.100.99 Supersedes EN 61535:2009 and all of its amendments
and corrigenda (if any)
English Version
Installation couplers intended for permanent connection in fixed
installations
(IEC 61535:2019)

Coupleurs d'installation pour connexions permanentes dans Installationssteckverbinder für dauernde Verbindung in

les installations fixes festen Installationen
(IEC 61535:2019) (IEC 61535:2019)

This European Standard was approved by CENELEC on 2019-11-20. 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, 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,

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 61535:2019 E
---------------------- Page: 3 ----------------------
SIST EN IEC 61535:2020
EN IEC 61535:2019 (E)
European foreword

The text of document 23/792/CDV, future edition of IEC 61535:2019, prepared by IEC/TC 23

"Electrical accessories" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC

as EN IEC 61535:2019.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2020-08-20

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2022-11-20

document have to be withdrawn

This document supersedes EN 61535:2009 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 mandate given to CENELEC by the European

Commission and the European Free Trade Association, and supports essential requirements of EU

Directive(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this

document.
Endorsement notice

The text of the International Standard IEC 61535:2019 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 60309 (series) NOTE Harmonized as EN 60309-4:2007/A1 (series)
IEC 60320 (series) NOTE Harmonized as EN 60320 (series)
IEC 60364 (series) NOTE Harmonized as HD 60364 (series)
IEC 60364-4-41:2005 NOTE Harmonized as HD 60364-4-41:2017
IEC 60364-5-52:2009 NOTE Harmonized as HD 60364-5-52:2011
IEC 61995 (series) NOTE Harmonized as EN 61995-2:2009/A1 (series)
---------------------- Page: 4 ----------------------
SIST EN IEC 61535:2020
EN IEC 61535:2019 (E)
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 60068-2-31 2008 Environmental testing - Part 2-31: Tests - EN 60068-2-31 2008

Test Ec: Rough handling shocks, primarily
for equipment-type specimens
IEC 60112 - Method for the determination of the proof EN 60112 2003
and the comparative tracking indices of
solid insulating materials
+ A1 2009
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code)
+ A1 1999 + A1 2000
+ A2 2013 + A2 2013
IEC 60664-1 2007 Insulation coordination for equipment EN 60664-1 2007
within low-voltage systems - Part 1:
Principles, requirements and tests
IEC 60695-2-11 - Fire hazard testing - Part 2-11: EN 60695-2-11 -
Glowing/hot-wire based test methods -
Glow-wire flammability test method for
end-products (GWEPT)
IEC 60998-2-3 - Connecting devices for low-voltage circuits EN 60998-2-3 -
for household and similar purposes - Part
2-3: Particular requirements for connecting
devices as separate entities with
insulation-piercing clamping units
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 61032 1997 Protection of persons and equipment by EN 61032 1998
enclosures - Probes for verification
---------------------- Page: 5 ----------------------
SIST EN IEC 61535:2020
EN IEC 61535:2019 (E)
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]
Safety objectives of Clause(s) / sub-clause(s)
Remarks / Notes
Directive 2014/35/EU of this EN
(1)(a)
Clauses 1, 7, 8, Annex D, Annex
(1)(b)
Clauses 6.2, 6.3, 8.3, 8.4, 9, 11,
12, 19, 22, Annex A, Annex E
(1)(c)
Clause 4
(2)(a) Clauses 9, 10, 12, 14, 16, 19.5,
20, 21, 23, Annex A
(2)(b) Clauses 11.2, 12.9, 15, 16, 17,
21.5
(2)(c) Clauses 10.1, 12, 24
(2)(d)
Clauses 6, 10, 14, 21, 23, 24
(3)(a)
Clauses 9.1, 12, 13, 18, 19.2,
19.3, 19.4, 20, 21.3, 21.4, 22
(3)(b) Clauses 13, 21, 24, 25
(3)(c) Clauses 11.2, 12.2, 12.3

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.
---------------------- Page: 6 ----------------------
SIST EN IEC 61535:2020
IEC 61535
Edition 2.0 2019-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Installation couplers intended for permanent connection in fixed installations
Coupleurs d'installation pour connexions permanentes dans les installations
fixes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.99 ISBN 978-2-8322-7428-6

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 61535:2020
– 2 – IEC 61535:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 6

INTRODUCTION ..................................................................................................................... 8

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms and definitions .................................................................................................... 10

4 General requirements .................................................................................................... 12

5 Conditions for tests ........................................................................................................ 12

5.1 General ................................................................................................................. 12

5.2 Test conditions ..................................................................................................... 13

5.3 Tests on non-rewirable installation couplers .......................................................... 13

5.4 Order of tests ........................................................................................................ 13

5.5 Specification of tests ............................................................................................. 13

5.6 Compliance requirements ..................................................................................... 13

5.7 Routine tests for non-rewirable installation couplers ............................................. 13

6 Ratings .......................................................................................................................... 13

6.1 Rated voltage ....................................................................................................... 13

6.2 Rated current ........................................................................................................ 14

6.3 Rated connecting capacity .................................................................................... 14

6.4 Tests .................................................................................................................... 15

7 Classification ................................................................................................................. 15

8 Marking and documentation ........................................................................................... 15

8.1 General ................................................................................................................. 15

8.2 Use of symbols or letters ...................................................................................... 16

8.3 Markings ............................................................................................................... 16

8.4 Documentation ...................................................................................................... 17

9 Dangerous compatibility ................................................................................................ 17

9.1 Unintended or improper connection ....................................................................... 17

9.2 Engagement ......................................................................................................... 18

9.3 Compatibility of different installation coupler systems ........................................... 18

9.4 Compatibility with standard systems ..................................................................... 18

10 Protection against electric shock ................................................................................... 18

10.1 Degree of protection against ingress of solid foreign objects ................................. 18

10.2 Access to live parts ............................................................................................... 19

10.3 External parts ....................................................................................................... 19

11 Terminals, terminations and connectable conductors ..................................................... 19

11.1 Terminals and terminations ................................................................................... 19

11.1.1 General ......................................................................................................... 19

11.1.2 Terminals of rewirable installation couplers ................................................... 19

11.1.3 Terminations of non-rewirable installation couplers ........................................ 20

11.2 Connectable conductors........................................................................................ 20

12 Construction .................................................................................................................. 20

12.1 Earth connection ................................................................................................... 20

12.2 Locking against rotation ........................................................................................ 21

12.3 Mechanical strength of contacts ............................................................................ 21

12.4 Housing of rewirable installation couplers ............................................................. 21

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SIST EN IEC 61535:2020
IEC 61535:2019 © IEC 2019 – 3 –

12.5 Housing of non-rewirable installation couplers ...................................................... 21

12.6 Dismantling and opening of rewirable installation couplers .................................... 21

12.7 Earthing contact and earthing terminal .................................................................. 22

12.8 Loose conductor strands ....................................................................................... 22

12.8.1 General ......................................................................................................... 22

12.8.2 Strand test for rewirable installation couplers ................................................. 22

12.8.3 Strand test for non-rewirable installation couplers .......................................... 23

12.8.4 Strand test for non-rewirable moulded-on installation couplers ...................... 23

12.9 Incorporation of electrical devices ......................................................................... 23

12.10 Retaining means ................................................................................................... 23

12.11 Distribution blocks ................................................................................................ 24

12.12 Shrouds ................................................................................................................ 24

12.13 Factory wiring ....................................................................................................... 24

12.14 Stress test ............................................................................................................ 24

12.14.1 General ......................................................................................................... 24

12.14.2 Stress test of rewirable installation couplers .................................................. 24

12.14.3 Stress test of non-rewirable installation couplers ........................................... 24

12.15 Separation of non-rewirable installation couplers .................................................. 25

13 Protection against harmful ingress of solid foreign objects and against harmful

ingress of water ............................................................................................................. 25

13.1 General ................................................................................................................. 25

13.2 Protection against harmful ingress of solid foreign objects .................................... 25

13.3 Protection against harmful ingress of water ........................................................... 25

14 Insulation resistance and electric strength ..................................................................... 25

14.1 General ................................................................................................................. 25

14.2 Insulation resistance ............................................................................................. 26

14.3 Electric strength .................................................................................................... 26

15 Construction of contacts ................................................................................................ 27

15.1 Resiliency ............................................................................................................. 27

15.2 Resistance of connections .................................................................................... 27

15.3 Contact pressure .................................................................................................. 27

16 Temperature rise ........................................................................................................... 27

17 Breaking capacity .......................................................................................................... 28

18 Forces necessary to disengage the parts of the installation coupler ............................... 29

19 Cables and their connection .......................................................................................... 29

19.1 Capability of being fitted ....................................................................................... 29

19.2 Relief from pull, thrust and torsion ........................................................................ 30

19.3 Relief .................................................................................................................... 30

19.4 Capability to connect cables with different cross-sectional area ............................ 30

19.5 Sharp edges ......................................................................................................... 33

20 Mechanical strength ...................................................................................................... 33

21 Resistance to heat and ageing....................................................................................... 34

21.1 Resistance to heat ................................................................................................ 34

21.2 Dry heat storage ................................................................................................... 34

21.3 Ball pressure test .................................................................................................. 34

21.4 Ageing of elastomeric and thermoplastic material ................................................. 35

21.5 Current cycling test ............................................................................................... 35

22 Screws, current-carrying parts and connections ............................................................. 36

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SIST EN IEC 61535:2020
– 4 – IEC 61535:2019 © IEC 2019

22.1 Screws and nuts ................................................................................................... 36

22.2 Screws and insulating material .............................................................................. 37

22.3 Screws and rivets for electrical and mechanical connections................................. 38

22.4 Metals of current-carrying parts ............................................................................ 38

23 Clearances, creepage distances and distances through solid insulation ......................... 38

24 Resistance to abnormal heat and to tracking ................................................................. 41

24.1 Resistance to abnormal heat ................................................................................. 41

24.2 Resistance to tracking ........................................................................................... 43

25 Resistance to rusting ..................................................................................................... 43

Annex A (normative) Routine earth (PE) continuity tests ..................................................... 45

Annex B (normative) Test circuits for temperature rise test .................................................. 46

Annex C (normative) Number of sets of test samples used for the tests and sequence

of tests for each set .............................................................................................................. 49

Annex D (informative) Guide to use ..................................................................................... 50

D.1 General ................................................................................................................. 50

D.2 Applications .......................................................................................................... 50

D.3 Use of installation couplers ................................................................................... 50

Annex E (normative) Warning symbol used in DC applications ............................................. 52

Bibliography .......................................................................................................................... 53

Figure 1 – Apparatus for testing the cable anchorage ........................................................... 32

Figure 2 – Apparatus for measuring the distortion (example) ................................................ 33

Figure 3 – Ball-pressure apparatus ....................................................................................... 35

Figure 4 – Explanation of "small part" ................................................................................... 43

Figure B.1 – 1P + N + PE installation couplers, including N (left figure), including PE

(right figure) .......................................................................................................................... 46

Figure B.2 – 3P + N + PE installation couplers, 3 phases loaded (left figure), N and PE

loaded (right figure) .............................................................................................................. 46

Figure B.3 – 1P + N + PE distribution block, phase and N loaded ......................................... 47

Figure B.4 – 1P + N + PE distribution block, phase and PE loaded ....................................... 47

Figure B.5 – 3P + N + PE to 1P + N + PE distribution block, 3 phases loaded ....................... 48

Figure B.6 – 3P + N + PE to 1P + N + PE distribution block, N and PE loaded ...................... 48

Figure D.1 – Examples of use of installation couplers ........................................................... 51

Figure E.1 – Symbol "DO NOT CONNECT OR DISCONNECT UNDER LOAD" ...................... 52

Table 1 – Voltage rating for installation couplers in AC application ....................................... 14

Table 2 – Voltage rating for installation couplers in DC application ....................................... 14

Table 3 – Classes of installation couplers ............................................................................. 15

Table 4 – Test currents for installation couplers .................................................................... 28

Table 5 – Forces to be applied to cable anchorages ............................................................. 31

Table 6 – Torque applied for the tightening and loosening test .............................................. 37

Table 7 – Installation couplers intended for use in supply systems with a maximum

voltage to earth of 150 V AC, rated impulse voltage 2,5 kV ................................................... 38

Table 8 – Installation couplers intended for use in supply systems with a maximum

voltage to earth of 300 V AC, rated impulse voltage 4,0 kV ................................................... 39

---------------------- Page: 10 ----------------------
SIST EN IEC 61535:2020
IEC 61535:2019 © IEC 2019 – 5 –

Table 9 – Installation couplers intended for use in single-phase two-wire systems

50 V DC and single-phase three-wire systems 60 V DC, rated impulse voltage 0,8 kV .......... 39

Table 10 – Installation couplers intended for use in single-phase two-wire systems

120 V DC and single-phase three-wire systems 240 V DC, rated impulse voltage

2,5 kV ................................................................................................................................... 40

Table 11 – Installation couplers intended for use in single-phase two-wire systems

220 V DC and single-phase three-wire systems 440 V DC, rated impulse voltage

4,0 kV ................................................................................................................................... 41

Table C.1 – Sets of samples ................................................................................................. 49

---------------------- Page: 11 ----------------------
SIST EN IEC 61535:2020
– 6 – IEC 61535:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSTALLATION COUPLERS INTENDED FOR PERMANENT
CONNECTION IN FIXED INSTALLATIONS
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

transpa
...

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