IEC 61535:2019
(Main)Installation couplers intended for permanent connection in fixed installations
Installation couplers intended for permanent connection in fixed installations
IEC 61535:2019 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. This second edition cancels and replaces the first edition published in 2009 and Amendment 1:2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- enlargement of the scope to DC application;
- addition of further requirements as regards DC application (marking, etc.), no additional test procedures were deemed necessary; however some modifications were necessary in the normative text;
- changes and enhancement of the field of application of installation couplers into outdoor applications;
- addition of a suitable temperature range;
- updating of the list of normative references, modified to undated references, where possible.
Coupleurs d'installation pour connexions permanentes dans les installations fixes
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.
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IEC 61535 ®
Edition 2.0 2019-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Installation couplers intended for permanent connection in fixed installations
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
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latest edition, a corrigendum or an amendment might have been published.
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IEC 61535 ®
Edition 2.0 2019-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Installation couplers intended for permanent connection in fixed installations
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.99 ISBN 978-2-8322-7545-0
– 2 – IEC 61535:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 General requirements . 12
5 General notes on Conditions for tests . 12
5.1 General . 12
5.2 Test conditions . 12
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
7 Classification . 14
7.1 rated impulse voltage: .
7.2 method of connecting the cable: .
7.3 degree of protection against ingress of foreign solid objects and ingress of
water according to IEC 60529 (IP-Code) .
7.4 location where installation couplers will be installed: .
7.5 existence of an earthing contact:.
7.6 type of conductor to be connected: .
7.7 type of terminals for rewirable installation couplers only: .
8 Marking and documentation . 16
8.1 General . 16
8.2 Use of symbols or letters . 17
8.3 Markings . 17
8.4 Documentation . 17
9 Dangerous compatibility . 18
9.1 Unintended or improper connection . 18
9.2 Engagement . 18
9.3 Compatibility of different installation coupler systems . 19
9.4 Compatibility with standard systems . 19
10 Protection against electric shock . 19
10.1 Degree of protection against ingress of solid foreign objects . 19
10.2 Access to live parts . 19
10.3 External parts . 19
11 Terminals, terminations and connectable conductors . 20
11.1 Terminals and terminations . 20
11.1.1 General . 20
11.1.2 Terminals of rewirable installation couplers . 20
11.1.3 Terminations of non-rewirable installation couplers . 20
11.2 Connectable conductors. 20
12 Construction . 21
12.1 Earth connection . 21
12.2 Locking against rotation . 21
12.3 Mechanical strength of contacts . 21
12.4 Housing of rewirable installation couplers . 21
12.5 Housing of non-rewirable installation couplers . 21
12.6 Dismantling and opening of rewirable installation couplers . 22
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 . 23
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 . 24
13 Protection against harmful ingress of solid foreign objects and against harmful
ingress of water . 24
13.1 General . 24
13.2 Protection against harmful ingress of solid foreign solid 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 . 25
14.3 Electric strength . 26
15 Construction of contacts . 26
15.1 Resiliency . 26
15.2 Resistance of connections . 26
15.3 Contact pressure . 27
16 Temperature rise . 27
17 Breaking capacity . 28
18 Forces necessary to disengage the parts of the installation coupler . 28
19 Cables and their connection . 28
19.1 Capability of being fitted . 28
19.2 Relief from pull, thrust and torsion . 29
19.3 Relief . 29
19.4 Capability to connect cables with different cross-sectional area . 29
19.5 Sharp edges . 32
20 Mechanical strength . 32
– 4 – IEC 61535:2019 RLV © IEC 2019
21 Resistance to heat and ageing.
...
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
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
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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
– 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
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 .
...
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