SIST EN IEC 60309-1:2022
(Main)Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 1: General requirements (IEC 60309-1:2021)
Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 1: General requirements (IEC 60309-1:2021)
IEC 60309-1:2021 applies to plugs, fixed or portable socket-outlets and appliance inlets hereinafter referred to as accessories, with a rated operating voltage not exceeding 1 000 V DC or 1 000 V AC with a frequency not exceeding 500 Hz and a rated current not exceeding 800 A, primarily intended for industrial use, either indoors or outdoors.
This fifth edition cancels and replaces the fourth edition published in 1999, Amendment 1:2005 and Amendment 2:2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- addition of classification, requirements and tests for accessories with shutters;
- additional marking to indicate neutral terminal and/or earthing terminal;
- replacement of the term "connector" by the term "portable socket-outlet".
Stecker, ortsfeste oder ortsveränderliche Steckdosen und Gerätestecker für industrielle Anwendungen - Teil 1: Allgemeine Anforderungen (IEC 60309-1:2021)
Fiches, socles fixes de prise de courant, prises mobiles et socles de connecteur pour usages industriels - Partie 1: Exigences générales (IEC 60309-1:2021)
L'IEC 60309-1:2021 s’applique aux fiches, socles fixes de prise de courant, prises mobiles et socles de connecteur, ci-après désignés par le terme les "appareils", de tension nominale d’emploi ne dépassant pas 1 000 V en courant continu ou 1 000 V en courant alternatif, de fréquence ne dépassant pas 500 Hz, et de courant nominal ne dépassant pas 800 A, destinés essentiellement aux usages industriels, à l’intérieur ou à l’extérieur des bâtiments.
Cette cinquième édition annule et remplace la quatrième édition parue en 1999, son Amendement 1:2005 et son Amendement 2:2012. Elle constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
- ajout d'une classification, d’exigences et d’essais relatifs aux appareils équipés d’obturateurs;
- marquage supplémentaire pour indiquer la borne du neutre et/ou la borne de terre;
- remplacement du terme "connecteur" par le terme "prise mobile".
Vtiči, fiksne ali prenosne vtičnice in aparatne spojke za industrijsko rabo - 1. del: Splošne zahteve (IEC 60309-1:2021)
Ta dokument se uporablja za vtiče, fiksne ali prenosne vtičnice in vtičnice aparatov (v nadaljevanju besedila: pribor) z nazivno obratovalno napetostjo, ki ne presega 1000 V enosmerne ali izmenične napetosti in frekvence 500 Hz, ter nazivnim tokom, ki ne presega 800 A, namenjene predvsem za industrijsko uporabo v notranjih prostorih ali na prostem.
Ta pribor je namenjen za namestitev s strani izključno usposobljenih ali kvalificiranih oseb. Seznam prednostnih nazivnih vrednosti ni namenjen izključitvi drugih nazivnih vrednosti.
Ta dokument se uporablja za pribor za uporabo pri temperaturi okolja med –25 °C in +40 °C.
Ta pribor se lahko priključi samo na kable z vodniki iz bakra ali bakrove zlitine. Ta dokument se uporablja za pribor z brezvijačnimi priključki ali priključki, ki predirajo izolacijo, z nazivnim tokom do vključno 32 A za serijo I in 30 A za serijo II.
Uporaba teh priključkov na gradbiščih ter za kmetijsko, komercialno ali domačo uporabo ni izključena.
Področje uporabe tega dokumenta zajema fiksne vtičnice ali vtičnice za aparate, ki so vgrajene v električno opremo ali so nanjo pritrjene. Ta dokument se uporablja tudi za pribor, namenjen uporabi pri izjemno nizkonapetostnih inštalacijah.
Ta dokument se ne uporablja za pribor, namenjen za domačo uporabo ali podobne splošne namene.
Ta dokument ne zajema enopolnega pribora.
Na mestih, kjer prevladujejo posebne okoliščine, na primer na ladji ali na mestih, kjer so možne eksplozije, so lahko potrebne dodatne zahteve.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2022
Nadomešča:
SIST EN 60309-1:2000
SIST EN 60309-1:2000/A1:2008
SIST EN 60309-1:2000/A1:2008/AC:2014
SIST EN 60309-1:2000/A11:2006
SIST EN 60309-1:2000/A2:2012
Vtiči, fiksne ali prenosne vtičnice in aparatne spojke za industrijsko rabo - 1. del:
Splošne zahteve (IEC 60309-1:2021)
Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part
1: General requirements (IEC 60309-1:2021)
Stecker, ortsfeste oder ortsveränderliche Steckdosen und Gerätestecker für industrielle
Anwendungen - Teil 1: Allgemeine Anforderungen (IEC 60309-1:2021)
Fiches, socles fixes de prise de courant, prises mobiles et socles de connecteur pour
usages industriels - Partie 1: Exigences générales (IEC 60309-1:2021)
Ta slovenski standard je istoveten z: EN IEC 60309-1:2022
ICS:
29.120.30 Vtiči, vtičnice, spojke Plugs, socket-outlets,
couplers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60309-1
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2022
ICS 29.120.30 Supersedes EN 60309-1:1999 + A1:2007 + A2:2012 +
A1:2007/AC:2014
English Version
Plugs, fixed or portable socket-outlets and appliance inlets for
industrial purposes - Part 1: General requirements
(IEC 60309-1:2021)
Fiches, socles fixes de prise de courant, prises mobiles et Stecker, ortsfeste oder ortsveränderliche Steckdosen und
socles de connecteur pour usages industriels - Partie 1: Gerätestecker für industrielle Anwendungen - Teil 1:
Exigences générales Allgemeine Anforderungen
(IEC 60309-1:2021) (IEC 60309-1:2021)
This European Standard was approved by CENELEC on 2021-09-08. 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
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60309-1:2022 E
European foreword
The text of document 23H/480/FDIS, future edition 5 of IEC 60309-1, prepared by SC 23H "Plugs,
Socket-outlets and Couplers for industrial and similar applications, and for Electric Vehicles" of
IEC/TC 23 "Electrical accessories" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60309-1:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022-12-17
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-06-17
document have to be withdrawn
This document supersedes EN 60309-1:1999 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a Standardization Request given to CENELEC by the
European Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60309-1:2021 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 60352-7 NOTE Harmonized as EN IEC 60352-7
IEC 60998-2-2 NOTE Harmonized as EN 60998-2-2
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 60068-2-14 - Environmental testing - Part 2-14: Tests - EN 60068-2-14 -
Test N: Change of temperature
IEC 60068-2-78 - Environmental testing - Part 2-78: Tests - EN 60068-2-78 -
Test Cab: Damp heat, steady state
IEC/TR 60083 - Plugs and socket-outlets for domestic and - -
similar general use standardized in member
countries of IEC
IEC 60112 - Method for the determination of the proof EN IEC 60112 -
and the comparative tracking indices of
solid insulating materials
IEC 60227 series Polyvinyl chloride insulated cables of rated - -
voltages up to and including 450/750 V
IEC 60228 2004 Conductors of insulated cables EN 60228 2005
- - + corrigendum May 2005
IEC 60245-4 2011 Rubber insulated cables - Rated voltages - -
up to and including 450/750 V - Part 4:
Cords and flexible cables
IEC 60269-1 - Low-voltage fuses - Part 1: General EN 60269-1 -
requirements
IEC 60269-2 - Low-voltage fuses - Part 2: Supplementary HD 60269-2 -
requirements for fuses for use by authorized
persons (fuses mainly for industrial
application) - Examples of standardized
systems of fuses A to K
IEC 60309-4 2021 Plugs, fixed or portable socket-outlets and EN IEC 60309-4 2021
appliance inlets for industrial purposes -
Part 4: Switched socket-outlets with or
without interlock
IEC 60320 series Appliance couplers for household and - -
similar general purposes
Publication Year Title EN/HD Year
IEC 60417 - Graphical symbols for use on equipment. - -
Index, survey and compilation of the single
sheets.
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code)
- - + corrigendum May 1993
+ A1 1999 + A1 2000
+ A2 2013 + A2 2013
IEC 60664-1 2020 Insulation coordination for equipment within EN IEC 60664-1 2020
low-voltage supply systems - Part 1:
Principles, requirements and tests
IEC 60664-3 - Insulation coordination for equipment within EN 60664-3 -
low-voltage systems - Part 3: Use of
coating, potting or moulding for protection
against pollution
IEC 60695-2-11 - Fire hazard testing - Part 2-11: Glowing/hot- EN IEC 60695-2-11 -
wire based test methods - Glow-wire
flammability test method for end products
(GWEPT)
IEC 60695-10-2 - Fire hazard testing - Part 10-2: Abnormal EN 60695-10-2 -
heat - Ball pressure test method
IEC 61000-6-2 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-6-2 -
6-2: Generic standards - Immunity standard
for industrial environments
IEC 61000-6-3 - Electromagnetic compatibility (EMC) - Part EN IEC 61000-6-3 -
6-3: Generic standards - Emission standard
for equipment in residential environments
IEC 61032 - Protection of persons and equipment by EN 61032 -
enclosures - Probes for verification
ISO 1456 - Metallic and other inorganic coatings - EN ISO 1456 -
Electrodeposited coatings of nickel, nickel
plus chromium, copper plus nickel and of
copper plus nickel plus chromium
ISO 2081 - Metallic and other inorganic coatings - EN ISO 2081 -
Electroplated coatings of zinc with
supplementary treatments on iron or steel
ISO 2093 - Electroplated coatings of tin; Specification - -
and test methods
IEC 60309-1 ®
Edition 5.0 2021-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Plugs, fixed or portable socket-outlets and appliance inlets for industrial
purposes –
Part 1: General requirements
Fiches, socles fixes de prise de courant, prises mobiles et socles de
connecteur pour usages industriels –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.30 ISBN 978-2-8322-9841-1
– 2 – IEC 60309-1:2021 © IEC 2021
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 General . 16
4.1 General requirements . 16
4.2 General notes on tests . 16
5 Standard ratings . 17
6 Classification of accessories . 17
7 Marking . 18
8 Dimensions. 22
9 Protection against electric shock . 23
10 Provision for earthing . 27
11 Terminals and terminations . 27
11.1 Common requirements for terminals and terminations . 27
11.2 Screw type terminals . 31
11.3 Screwless type terminals . 34
11.4 Insulation piercing terminals (IPT) . 38
11.5 Mechanical tests on terminals . 39
11.6 Voltage drop test for screwless type terminals and for insulation piercing
terminals . 42
11.7 Tests for insulation piercing terminals transmitting contact pressure via
insulating parts . 44
11.7.1 Temperature-cycling test . 44
11.7.2 Short-time withstand current test . 44
12 Interlocks . 44
13 Resistance to ageing of rubber and thermoplastic material . 45
14 Construction . 45
14.1 General construction . 45
14.2 Construction of contacts . 46
15 Construction of fixed socket-outlets . 46
16 Construction of plugs and portable socket-outlets . 48
17 Construction of appliance inlets . 49
18 Degrees of protection . 49
19 Insulation resistance and dielectric strength . 50
20 Breaking capacity . 52
21 Normal operation . 54
22 Temperature rise . 55
23 Flexible cables and their connection . 57
23.1 Cable anchorage . 57
23.2 Requirements for plugs and portable socket-outlets . 57
23.2.1 Non-rewireable plugs and portable socket-outlets . 57
23.2.2 Rewireable plugs and portable socket-outlets . 59
23.3 Pull test . 59
IEC 60309-1:2021 © IEC 2021 – 3 –
24 Mechanical strength . 63
25 Screws, current-carrying parts and connections . 69
26 Creepage distances, clearances and distances through sealing compound . 72
26.1 General . 72
26.2 Sealing compound . 75
27 Resistance to heat, to fire and to tracking . 75
28 Corrosion and resistance to rusting . 76
29 Conditional short-circuit current withstand test . 77
29.1 Minimum prospective short-circuit current . 77
29.2 Ratings and test conditions . 77
29.2.1 General . 77
29.2.2 Test-circuit . 77
29.2.3 Calibration . 78
29.2.4 Test procedure . 78
29.2.5 Acceptance conditions . 78
30 Electromagnetic compatibility . 81
30.1 Immunity . 81
30.2 Emission . 82
Annex A (normative) Guidance and description of test apparatus . 83
A.1 Pendulum and mount . 83
A.2 Impact energy and release angle . 83
A.3 Description of test apparatus . 84
Bibliography . 90
Figure 1 – Diagram showing the use of the accessories . 10
Figure 2 – Pillar terminals . 11
Figure 3 – Screw terminals . 12
Figure 4 – Stud terminals . 12
Figure 5 – Saddle terminals . 12
Figure 6 – Lug terminals . 13
Figure 7 – Mantle terminals. 13
Figure 8 – Screwless terminals . 13
Figure 9 – Insulation piercing terminals . 14
Figure 10 – Test piston . 21
Figure 11 – Gauge "A" for checking shutters . 25
Figure 12 – Gauge "B" for checking shutters . 26
Figure 13 – Gauges for testing insertability of round unprepared conductors having the
maximum specified cross-section . 33
Figure 14 – Information for the bending test . 36
Figure 15 – Test arrangement for terminals. 40
Figure 16 – Circuit diagrams for breaking capacity and normal operation tests . 53
Figure 17 – Apparatus for testing the cable anchorage . 60
Figure 18 – Arrangement for mechanical strength test for plugs and portable socket-
outlets . 66
Figure 19 – Apparatus for flexing test . 67
– 4 – IEC 60309-1:2021 © IEC 2021
Figure 20 – Diagram of the test circuit for the verification of short-circuit current
withstand of a two-pole accessory on a single-phase AC or DC . 79
Figure 21 – Diagram of the test circuit for the verification of short-circuit current
withstand of a three-pole accessory . 80
Figure 22 – Diagram of the test circuit for the verification of short-circuit current
withstand of a four-pole accessory . 81
Figure A.1 – Impact test fixture – Pendulum assembly . 85
Figure A.2 – Impact test fixture – Pendulum masses – Quantity: 4 . 86
Figure A.3 – Impact test fixture – Pendulum shaft end . 87
Figure A.4 – Impact test fixture – Pendulum anvil . 87
Figure A.5 – Impact test fixture – Pendulum shaft . 88
Figure A.6 – Impact text fixture – Pendulum pivot . 88
Figure A.7 – Impact test apparatus – Back and mounting plates . 89
Table 1 – Preferred rated currents . 17
Table 2 – Colour coding . 22
Table 3 – Size for connectable conductors . 30
Table 4 – Deflection test forces. 37
Table 5 – Pulling test values on terminals . 41
Table 6 – Pulling force . 42
Table 7 – Test current . 44
Table 8 – Dielectric strength test. 51
Table 9 – Breaking capacity . 54
Table 10 – Normal operation . 55
Table 11 – Temperature rise test . 56
Table 12 – Types of cables . 58
Table 13 – Dimensions of cables . 61
Table 14 – Torque test values . 63
Table 15 – Blow test impact energy . 65
Table 16 – Flexing test load values . 67
Table 17 – Test values for screwed glands . 68
Table 18 – Pulling force on insulated end caps . 69
Table 19 – Tightening torques. 70
Table 20 – Creepage distances, clearances and distances through sealing compound . 73
Table A.1 – Impact test release angles . 86
IEC 60309-1:2021 © IEC 2021 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PLUGS, FIXED OR PORTABLE SOCKET-OUTLETS AND
APPLIANCE INLETS FOR INDUSTRIAL PURPOSES –
Part 1: General requirements
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 60309-1 has been prepared by subcommittee SC 23H: Plugs,
socket-outlets and couplers for industrial and similar applications, and for electric vehicles, of
IEC technical committee 23: Electrical accessories.
This fifth edition cancels and replaces the fourth edition published in 1999, Amendment 1:2005
and Amendment 2:2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of classification, requirements and tests for accessories with shutters;
b) additional marking to indicate neutral terminal and/or earthing terminal;
c) replacement of the term "connector" by the term "portable socket-outlet".
– 6 – IEC 60309-1:2021 © IEC 2021
The text of this International Standard is based on the following documents:
FDIS Report on voting
23H/480/FDIS 23H/486/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
In this document, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– notes: in smaller roman type.
Subsequent parts of IEC 60309 deal with the requirements of particular types of accessories.
The clauses of these particular requirements supplement or modify the corresponding clauses
in this document.
A list of all parts in the IEC 60309 series, published under the general title Plugs, fixed or
portable socket-outlets and appliance inlets for industrial purposes, can be found on the IEC
website.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC 60309-1:2021 © IEC 2021 – 7 –
PLUGS, FIXED OR PORTABLE SOCKET-OUTLETS AND
APPLIANCE INLETS FOR INDUSTRIAL PURPOSES –
Part 1: General requirements
1 Scope
This document applies to plugs, fixed or portable socket-outlets and appliance inlets hereinafter
referred to as accessories, with a rated operating voltage not exceeding 1 000 V DC or
1 000 V AC with a frequency not exceeding 500 Hz and a rated current not exceeding 800 A,
primarily intended for industrial use, either indoors or outdoors.
These accessories are intended to be installed by instructed persons or skilled persons only.
The list of preferred ratings is not intended to exclude other ratings.
This document applies to accessories for use when the ambient temperature is normally within
the range of −25 °C to +40 °C.
These accessories are intended to be connected to cables of copper or copper alloy only.
This document applies to accessories with screwless-type terminals or insulation piercing
terminals, with a rated current up to and including 32 A for series I and 30 A for series II.
The use of these accessories on building sites and for agricultural, commercial and domestic
applications is not precluded.
Fixed socket-outlets or appliance inlets incorporated in or fixed to electrical equipment are
within the scope of this document. This document also applies to accessories intended to be
used in extra-low voltage installations.
This document does not apply to accessories primarily intended for domestic and similar
general purposes.
This document does not cover single-pole accessories.
In locations where special conditions prevail, for example on board ship or where explosions
are liable to occur, additional requirements can be necessary.
2 Normative references
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.
IEC 60068-2-14, Environmental testing – Part 2-14: Tests – Test N: Change of temperature
IEC 60068-2-78, Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state
IEC TR 60083, Plugs and socket-outlets for domestic and similar general use standardized in
member countries of IEC
– 8 – IEC 60309-1:2021 © IEC 2021
IEC 60112, Method for the determination of the proof and the comparative tracking indices of
solid insulating materials
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60228:2004, Conductors of insulated cables
IEC 60245-4:2011, Rubber insulated cables – Rated voltages up to and including 450/750 V –
Part 4: Cords and flexible cables
IEC 60269-1, Low-voltage fuses – Part 1: General requirements
IEC 60269-2, Low-voltage fuses – Part 2: Supplementary requirements for fuses for use by
authorized persons (fuses mainly for industrial application) – Examples of standardized systems
of fuses A to K
IEC 60309-4:2021, Plugs, fixed or portable socket-outlets and appliance inlets for industrial
purposes – Part 4: Switched socket-outlets with or without interlock
IEC 60320 (all parts), Appliance couplers for household and similar general purposes
IEC 60417, Graphical symbols for use on equipment (available at http://www.graphical-
symbols.info/equipment)
IEC 60529:1989, Degrees of protection provided by enclosures (IP code)
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60664-1:2020, Insulation coordination for equipment within low-voltage supply systems –
Part 1: Principles, requirements and tests
IEC 60664-3, Insulation coordination for equipment within low-voltage systems – Part 3: Use of
coating, potting or moulding for protection against pollution
IEC 60695-2-11, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods – Glow-
wire flammability test method for end-products (GWEPT)
IEC 60695-10-2, Fire hazard testing – Part 10-2: Abnormal heat – Ball pressure test method
IEC 61000-6-2, Electromagnetic compatibility (EMC) – Part 6-2: Generic standards – Immunity
standard for industrial environments
IEC 61000-6-3, Electromagnetic compatibility (EMC) – Part 6-3: Generic standards – Emission
standard for equipment in residential environments
IEC 61032, Protection of persons and equipment by enclosures – Probes for verification
ISO 1456, Metallic and other inorganic coatings – Electrodeposited coatings of nickel, nickel
plus chromium, copper plus nickel and of copper plus nickel plus chromium
ISO 2081, Metallic and other inorganic coatings – Electroplated coatings of zinc with
supplementary treatments on iron or steel
ISO 2093, Electroplated coatings of tin – Specification and test methods
IEC 60309-1:2021 © IEC 2021 – 9 –
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
NOTE Where the terms "voltage" and "current" are used, they refer to the DC or the AC root mean square (RMS)
values.
The application of accessories is shown in Figure 1.
3.1
fixed socket-outlet
part intended to be installed with the fixed wiring or incorporated in equipment
Note 1 to entry: A fixed socket-outlet may also be incorporated in the output circuit of an isolating transformer.
Note 2 to entry: In some countries fixed socket-outlets are called "receptacles".
Note 3 to entry: When the term "socket-outlet" is used alone, it covers both fixed and portable socket-outlets.
3.2
plug
part integral with or intended to be attached directly to one flexible cable connected to the
equipment or to a portable socket-outlet
Note 1 to entry: In French, the resulting assembly when a plug is inserted into a socket-outlet is called "prise de
courant".
3.3
portable socket-outlet
part integral with or intended to be attached to one flexible cable connected to the supply
Note 1 to entry: In general, a portable socket-outlet has the same contact arrangement as a fixed socket-outlet.
Note 2 to entry: The resulting assembly when a plug is inserted into a portable socket outlet is called a "cable
coupler".
3.4
appliance inlet
part incorporated in, or fixed to, the equipment or intended to be fixed to it
Note 1 to entry: In general, an appliance inlet has the same contact arrangement as a plug.
Note 2 to entry: The resulting assembly when a portable socket outlet is inserted into an appliance is called an
"appliance coupler".
3.5
main part
part of an accessory carrying the contacts
3.6
rewireable accessory
accessory so constructed that the flexible cable can be replaced
3.7
non-rewireable accessory
accessory so constructed that the flexible cable cannot be separated from the accessory without
making it permanently useless
– 10 – IEC 60309-1:2021 © IEC 2021
Key
A supply
B fixed socket-outlet
C plug
D flexible cable
E portable socket-outlet
F appliance inlet
G appliance
Figure 1 – Diagram showing the use of the accessories
3.8
interlock
device, either electrical or mechanical, which prevents the contacts of a plug from becoming
live before it is in proper engagement with a socket-outlet, and which either prevents the plug
from being withdrawn while its contacts are live or makes the contacts dead before separation
3.9
retaining device
mechanical arrangement which holds a plug or portable socket-outlet in position when it is in
proper engagement, and prevents its unintentional withdrawal
3.10
rated current
current assigned to the accessory by the manufacturer
3.11
insulation voltage
voltage assigned to the accessory by the manufacturer and to which dielectric tests, clearances
and creepage distances are referred
3.12
rated operating voltage
nominal voltage of the supply for which the accessory is intended to be used
Note 1 to entry: An accessory may have a rated operating voltage range.
IEC 60309-1:2021 © IEC 2021 – 11 –
Note 2 to entry: An accessory may have more than one rated operating voltage.
3.13
basic insulation
insulation necessary for the proper functioning of the accessory and for basic protection against
electric shock
3.14
supplementary insulation
protective insulation
independent insulation provided in addition to the basic insulation, in order to ensure protection
against electric shock in the event of a failure of the basic insulation
3.15
double insulation
insulation comprising both basic insulation and supplementary insulation
3.16
reinforced insulation
improved basic insulation with such mechanical and electrical qualities that it provides the same
degree of protection against electric shock as double insulation
3.17
terminal
conductive part provided for the connection of a conductor to an accessory
3.17.1
pillar terminal
terminal in which the conductor is inserted into a hole or cavity, where it is clamped under the
shank of the screw or screws
Note 1 to entry: The clamping pressure may be applied directly by the shank of the screw or through an intermediate
clamping member to which pressure is applied by the shank of the screw (see Figure 2).
Figure 2 – Pillar terminals
3.17.2
screw terminal
terminal in which the conductor is clamped under the head of the screw
Note 1 to entry: The clamping pressure may be applied directly by the head of the screw or through an intermediate
part, such as a washer, clamping plate or anti-spread device (see Figure 3).
– 12 – IEC 60309-1:2021 © IEC 2021
Figure 3 – Screw terminals
3.17.3
stud terminal
terminal in which the conductor is clamped under a nut
Note 1 to entry: The clamping pressure may be applied directly by a suitably shaped nut or through an intermediate
part, such as a washer, clamping plate or anti-spread device (see Figure 4).
Figure 4 – Stud terminals
3.17.4
saddle terminal
terminal in which the conductor is clamped under a saddle by means of two or more screws or
nuts
SEE: Figure 5
Figure 5 – Saddle terminals
3.17.5
lug terminal
screw terminal or a stud terminal, designed for clamping a cable lug or bar by means of a screw
or nut
SEE: Figure 6
IEC 60309-1:2021 © IEC 2021 – 13 –
Figure 6 – Lug terminals
3.17.6
mantle terminal
terminal in which the conductor is clamped against the base of a slot in a threaded stud by
means of a nut
Note 1 to entry: The conductor is clamped against the base of the slot by a suitably shaped washer under the nut,
by a central peg if the nut is a cap nut, or by equally effective means for transmitting the pressure from the nut to the
conductor within the slot (see Figure 7).
Figure 7 – Mantle terminals
3.17.7
screwless type terminal
terminal for the connection and subsequent disconnection of one or more conductors, the
connection being made, directly or indirectly, by means other than screws
Note 1 to entry: Examples of screwless type terminals are given in Figure 8.
Figure 8 – Screwless terminals
– 14 – IEC 60309-1:2021 © IEC 2021
3.17.8
insulation piercing terminal
IPT
terminal for the connection and subsequent disconnection of one or more conductors, the
connection being made by piercing, boring through, cutting through, displacing or making
ineffective in some other manner the insulation of the conductor(s) without previous stripping
Note 1 to entry: The removal of the outer sheath of the cable, if necessary, is not considered as a previous stripping.
Note 2 to entry: Examples of IPT are given in Figure 9.
Key
A Conductor
Figure 9 – Insulation piercing terminals
3.18
clamping unit
part(s) of a terminal necessary for the mechanical clamping and the electrical connection of the
conductor(s), including the parts which are necessary to ensure correct contact pressure
3.19
conditional short-circuit current
prospective current that an accessory, protected by a specified short-circuit protective device,
can satisfactorily withstand for the total operating time of that device under specified conditions
of use and behaviour
Note 1 to entry: This definition differs from that of IEC 60050-441:2000, 441-17-20 by broadening the concept of
current-limiting device to a short-circuit protective device, the function of which is not only to limit the current.
3.20
cap
part separated or attached, which may be used
...
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