EN IEC 61076-2-111:2026

SLOVENSKI STANDARD
01-marec-2026
Nadomešča:
SIST EN IEC 61076-2-111:2018
Konektorji za električno in elektronsko opremo - Zahteve za izdelek - 2-111. del:
Okrogli konektorji - Podrobna specifikacija za močnostne konektorje z vijačnim
zaklepanjem M12 (IEC 61076-2-111:2025)
Connectors for electrical and electronic equipment - Product requirements - Part 2-111:
Circular connectors - Detail specification for power connectors with M12 screw-locking
(IEC 61076-2-111:2025)
Steckverbinder für elektrische und elektronische Einrichtungen – Produktanforderungen
– Teil 2-111: Rundsteckverbinder – Bauartspezifikation für Leistungs-Steckverbinder mit
Schraubverriegelung M12 (IEC 61076-2-111:2025)
Connecteurs pour équipements électriques et électroniques - Exigences de produit -
Partie 2-111: Connecteurs circulaires - Spécification particulière pour les connecteurs
d’alimentation à vis M12 (IEC 61076-2-111:2025)
Ta slovenski standard je istoveten z: EN IEC 61076-2-111:2026
ICS:
31.220.10 Vtiči in vtičnice, konektorji Plug-and-socket devices.
Connectors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61076-2-111

NORME EUROPÉENNE
EUROPÄISCHE NORM January 2026
ICS 31.220.10 Supersedes EN IEC 61076-2-111:2018
English Version
Connectors for electrical and electronic equipment - Product
requirements - Part 2-111: Circular connectors - Detail
specification for power connectors with M12 screw-locking
(IEC 61076-2-111:2025)
Connecteurs pour équipements électriques et électroniques Steckverbinder für elektrische und elektronische
- Exigences de produit - Partie 2-111: Connecteurs Einrichtungen - Produktanforderungen - Teil 2-111:
circulaires - Spécification particulière pour les connecteurs Rundsteckverbinder - Bauartspezifikation für Leistungs-
d'alimentation à vis M12 Steckverbinder mit Schraubverriegelung M12
(IEC 61076-2-111:2025) (IEC 61076-2-111:2025)
This European Standard was approved by CENELEC on 2026-01-15. 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,
Türkiye 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
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61076-2-111:2026 E

European foreword
The text of document 48B/3169/FDIS, future edition 2 of IEC 61076-2-111, prepared by SC 48B
"Electrical connectors" of IEC/TC 48 "Electrical connectors and mechanical structures for electrical
and electronic equipment" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 61076-2-111:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-01-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-01-31
document have to be withdrawn
This document supersedes EN IEC 61076-2-111:2018 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.
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 61076-2-111:2025 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 standard indicated:
IEC 60998-2-1 NOTE Approved as EN 60998-2-1
IEC 61076-2 NOTE Approved as EN 61076-2
IEC 61076-2-010 NOTE Approved as EN IEC 61076-2-010
IEC 61076-2-109 NOTE Approved as EN 61076-2-109
IEC 61076-2-012 NOTE Approved as EN IEC 61076-2-012
IEC 61076-2-109 NOTE Approved as EN 61076-2-109
IEC 61076-2-101 NOTE Approved as EN IEC 61076-2-101
IEC 61076-2-107 NOTE Approved as EN 61076-2-107
IEC 61076-2-109 NOTE Approved as EN 61076-2-109
IEC 61076-2-113 NOTE Approved as EN 61076-2-113
ISO 11469 NOTE Approved as EN ISO 11469
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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60050-581 - International Electrotechnical Vocabulary - - -
Part 581: Electromechanical components
for electronic equipment
IEC 60068-1 - Environmental testing - Part 1: General EN 60068-1 -
and guidance
IEC 60068-2-20 - Environmental testing - Part 2-20: Tests - EN IEC 60068-2-20 -
Test Ta and Tb: Test methods for
solderability and resistance to soldering
heat of devices with leads
IEC 60068-2-60 - Environmental testing - Part 2-60: Tests - EN 60068-2-60 -
Test Ke: Flowing mixed gas corrosion test
IEC 60352-2 - Solderless connections - Part 2: Crimped EN IEC 60352-2 -
connections - General requirements, test
methods and practical guidance
IEC 60352-3 - Solderless connections - Part 3: Accessible EN IEC 60352-3 -
insulation displacement (ID) connections -
General requirements, test methods and
practical guidance
IEC 60352-4 - Solderless connections - Part 4: Non- EN IEC 60352-4 -
accessible insulation displacement (ID)
connections - General requirements, test
methods and practical guidance
IEC 60352-5 - Solderless connections - Part 5: Press-in EN IEC 60352-5 -
connections - General requirements, test
methods and practical guidance
IEC 60352-6 - Solderless connections - Part 6: Insulation EN IEC 60352-6 -
piercing connections - General
requirements, test methods and practical
guidance
IEC 60352-7 - Solderless connections - Part 7: Spring EN IEC 60352-7 -
clamp connections - General requirements,
test methods and practical guidance
Publication Year Title EN/HD Year
IEC 60352-9 - Solderless connections - Part 9: EN IEC 60352-9 -
Ultrasonically welded connections -
General requirements, test methods and
practical guidance
IEC 60512-1 - Connectors for electrical and electronic EN IEC 60512-1 -
equipment - Tests and measurements -
Part 1: Generic specification
IEC 60512-1-2 - Connectors for electronic equipment - EN 60512-1-2 -
Tests and measurements - Part 1-2:
General examination - Test 1b:
Examination of dimension and mass
IEC 60512-2-1 - Connectors for electronic equipment - EN 60512-2-1 -
Tests and measurements - Part 2-1:
Electrical continuity and contact resistance
tests - Test 2a: Contact resistance -
Millivolt level method
IEC 60512-3-1 - Connectors for electronic equipment - EN 60512-3-1 -
Tests and measurements - Part 3-1:
Insulation tests - Test 3a: Insulation
resistance
IEC 60512-4-1 - Connectors for electronic equipment - EN 60512-4-1 -
Tests and measurements - Part 4-1:
Voltage stress tests - Test 4a: Voltage
proof
IEC 60512-5-1 - Connectors for electronic equipment - EN 60512-5-1 -
Tests and measurements - Part 5-1:
Current-carrying capacity tests - Test 5a:
Temperature rise
IEC 60512-6-3 - Connectors for electronic equipment - EN 60512-6-3 -
Tests and measurements - Part 6-3:
Dynamic stress tests - Test 6c: Shock
IEC 60512-6-4 - Connectors for electronic equipment - EN 60512-6-4 -
Tests and measurements - Part 6-4:
Dynamic stress tests - Test 6d: Vibration
(sinusoidal)
IEC 60512-9-1 - Connectors for electronic equipment - EN 60512-9-1 -
Tests and measurements - Part 9-1:
Endurance tests - Test 9a: Mechanical
operation
IEC 60512-9-2 - Connectors for electronic equipment - EN 60512-9-2 -
Tests and measurements - Part 9-2:
Endurance tests - Test 9b: Electrical load
and temperature
IEC 60512-11-3 - Connectors for electronic equipment - EN 60512-11-3 -
Tests and measurements - Part 11-3:
Climatic tests - Test 11c: Damp heat,
steady state
IEC 60512-11-4 - Connectors for electronic equipment - EN 60512-11-4 -
Tests and measurements - Part 11-4:
Climatic tests - Test 11d: Rapid change of
temperature
Publication Year Title EN/HD Year
IEC 60512-11-7 - Connectors for electronic equipment - EN 60512-11-7 -
Tests and measurements - Part 11-7:
Climatic tests - Test 11g: Flowing mixed
gas corrosion test
IEC 60512-11-9 - Connectors for electronic equipment - EN 60512-11-9 -
Tests and measurements - Part 11-9:
Climatic tests - Test 11i: Dry heat
IEC 60512-11-10 - Connectors for electronic equipment - EN 60512-11-10 -
Tests and measurements - Part 11-10:
Climatic tests - Test 11j: Cold
IEC 60512-11-12 - Connectors for electronic equipment - EN 60512-11-12 -
Tests and measurements - Part 11-12:
Climatic tests - Test 11m: Damp heat,
cyclic
IEC 60512-12-1 - Connectors for electronic equipment - EN 60512-12-1 -
Tests and measurements - Part 12-1:
Soldering tests - Test 12a: Solderability,
wetting, solder bath method
IEC 60512-12-2 - Connectors for electronic equipment - EN 60512-12-2 -
Tests and measurements - Part 12-2:
Soldering tests - Test 12b: Solderability,
wetting, soldering iron method
IEC 60512-12-3 - Connectors for electronic equipment - EN 60512-12-3 -
Tests and measurements - Part 12-3:
Soldering tests - Test 12c: Solderability,
de-wetting
IEC 60512-13-2 - Connectors for electronic equipment - EN 60512-13-2 -
Tests and measurements - Part 13-2:
Mechanical operation tests - Test 13b:
Insertion and withdrawal forces
IEC 60512-13-5 - Connectors for electronic equipment - EN 60512-13-5 -
Tests and measurements - Part 13-5:
Mechanical operation tests - Test 13e:
Polarizing and keying method
IEC 60512-14-7 - Electromechanical components for EN 60512-14-7 -
electronic equipment - Basic testing
procedures and measuring methods - Part
14: Sealing tests - Section 7: Test 14g:
Impacting water
IEC 60512-16-5 - Connectors for electronic equipment - EN 60512-16-5 -
Tests and measurements - Part 16-5:
Mechanical tests on contacts and
terminations - Test 16e: Gauge retention
force (resilient contacts)
IEC 60512-19-3 - Electromechanical components for EN 60512-19-3 -
electronic equipment - Basic testing
procedures and measuring methods - Part
19: Chemical resistance tests - Section 3:
Test 19c - Fluid resistance
Publication Year Title EN/HD Year
IEC 60512-23-3 - Connectors for electrical and electronic EN IEC 60512-23-3 -
equipment - Tests and measurements -
Part 23-3: Screening and filtering tests -
Test 23c: Shielding effectiveness of
connectors and accessories - Line injection
method
IEC 60529 - Degrees of protection provided by EN 60529 -
enclosures (IP Code)
IEC 60664-1 2020 Insulation coordination for equipment EN IEC 60664-1 2020
within low-voltage supply systems - Part 1:
Principles, requirements and tests
IEC 60999-1 - Connecting devices - Electrical copper EN 60999-1 -
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 61076-1 - Connectors for electronic equipment - EN 61076-1 -
Product requirements - Part 1: Generic
specification
IEC 61984 2008 Connectors - Safety requirements and EN 61984 2009
tests
IEC 62197-1 - Connectors for electronic equipment - EN 62197-1 -
Quality assessment requirements - Part 1:
Generic specification
IEC/TR 63040 - Guidance on clearances and creepage - -
distances in particular for distances equal
to or less than 2 mm - Test results of
research on influencing parameters
ISO 21920-1 - Geometrical product specifications (GPS) - EN ISO 21920-1 -
Surface texture: Profile - Part 1: Indication
of surface texture
IEC 61076-2-111 ®
Edition 2.0 2025-12
INTERNATIONAL
STANDARD
Connectors for electrical and electronic equipment - Product requirements -
Part 2-111: Circular connectors - Detail specification for power connectors with
M12 screw-locking
ICS 31.220.10  ISBN 978-2-8327-0766-1

IEC 61076-2-111:2025-12(en)
IEC 61076-2-111:2025 © IEC 2025
CONTENTS
FOREWORD . 5
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 11
4 Technical information . 11
4.1 Methods of termination . 11
4.2 Connector coding, number of contacts, ratings and characteristics . 11
4.3 Systems of levels. 12
4.3.1 Performance level . 12
4.3.2 Compatibility levels, according to IEC 61076-1 . 12
4.4 Classification into climatic categories . 13
4.5 Creepage and clearance distances . 13
4.6 Current-carrying capacity . 13
4.7 Marking . 13
4.8 Safety aspects . 13
5 Dimensional information . 13
5.1 General . 13
5.2 Fixed connectors . 14
5.2.1 General. 14
5.2.2 Style EM . 14
5.2.3 Style FM . 15
5.2.4 Style EF . 17
5.2.5 Style FF . 17
5.2.6 Style IM . 18
5.2.7 Style IF . 19
5.3 Free connectors . 20
5.3.1 General. 20
5.3.2 Style JM . 21
5.3.3 Style KM . 21
5.3.4 Style LM . 22
5.3.5 Style MM . 22
5.3.6 Style JF . 24
5.3.7 Style KF . 24
5.3.8 Style LF . 25
5.3.9 Style MF . 26
5.4 Interface dimensions . 27
5.4.1 F-coding . 27
5.4.2 K-coding . 30
5.4.3 L-coding . 32
5.4.4 M-coding . 37
5.4.5 S-coding . 40
5.4.6 T-coding . 42
5.5 Engagement (mating) information . 45
5.6 Sizing gauges and retention force gauges . 48
6 Characteristics . 49
6.1 General . 49
IEC 61076-2-111:2025 © IEC 2025
6.2 Pin assignment and other definitions . 49
6.3 Classification into climatic categories . 49
6.4 Electrical characteristics . 50
6.4.1 Rated insulation voltage – Rated impulse withstand voltage – Pollution
degree . 50
6.4.2 Voltage proof . 50
6.4.3 Current-carrying capacity . 51
6.4.4 Contact resistance . 52
6.4.5 Insulation resistance . 52
6.5 Mechanical characteristics . 52
6.5.1 Mechanical operation . 52
6.5.2 Insertion and withdrawal forces . 53
6.5.3 Contact retention in insert . 53
6.5.4 Polarizing and coding method . 53
6.6 Other characteristics . 53
6.6.1 Vibration (sinusoidal). 53
6.6.2 Shock . 54
6.6.3 Degree of protection provided by enclosures (IP code) . 54
6.6.4 Shielding properties . 54
6.7 Marking of insulation material (plastics) . 54
7 Test schedule . 54
7.1 General . 54
7.1.1 General. 54
7.1.2 Climatic category . 54
7.1.3 Creepage and clearance distances . 54
7.1.4 Arrangement for contact resistance measurement . 55
7.1.5 Arrangement for dynamic stress tests . 55
7.1.6 Wiring of specimens . 56
7.2 Test schedules . 57
7.2.1 Basic (minimum) test schedule . 57
7.2.2 Full test schedule . 57
Annex A (informative) Recommended outer diameter of the female connector body. 65
Annex B (informative) Orientation of cable outlet in relation to coding . 66
Bibliography . 67

Figure 1 – Fixed connector, male contacts, mounting with thread M12 × 1, with wire
ends, single hole mounting thread M16 × 1,5. 15
Figure 2 – Fixed connector, male contacts, mounting with thread M12 × 1, with wire
ends, single hole mounting thread M20 × 1,5. 16
Figure 3 – Fixed connector, female contacts, mounting with thread M12 × 1, with wire
ends, single hole mounting thread M16 × 1,5. 17
Figure 4 – Fixed connector, female contacts, mounting with thread M12 × 1, with wire
ends, single hole mounting thread M20 × 1,5. 18
Figure 5 – Fixed connector, male contacts, mounting with thread M12 × 1, with wire
ends, single hole mounting thread M16 × 1,5, rear mounting . 19
Figure 6 – Fixed connector, female contacts, mounting with thread M12 × 1, with wire
ends, single hole mounting thread M16 × 1,5, rear mounting . 20
Figure 7 – Rewirable connector, male contacts, straight version, with locking nut . 21
Figure 8 – Rewirable connector, male contacts, right angled version, with locking nut . 21
IEC 61076-2-111:2025 © IEC 2025
Figure 9 – Non-rewirable connector, male contacts, straight version, with locking nut . 22
Figure 10 – Non-rewirable connector, male contacts, right angled version, with
locking nut . 23
Figure 11 – Rewirable connector, female contacts, straight version, with locking nut . 24
Figure 12 – Rewirable connector, female contacts, right angled version with locking nut . 25
Figure 13 – Non-rewirable connector, female contacts, straight version with locking nut . 25
Figure 14 – Non-rewirable connector, female contacts, right angled version, with
locking nut . 26
Figure 15 – F-coding male side . 27
Figure 16 – F-coding female side . 28
Figure 17 – Contact position for F-coding front view . 29
Figure 18 – K-coding male side . 30
Figure 19 – K-coding female side . 31
Figure 20 – Contact position K-coding front view . 32
Figure 21 – L-coding male side with one female contact . 33
Figure 22 – L-coding female side with one male contact . 34
Figure 23 – Contact position L-coding front view . 36
Figure 24 – M-coding male side . 37
Figure 25 – M-coding female side . 38
Figure 26 – Contact position M-coding front view . 39
Figure 27 – S-coding male side . 40
Figure 28 – S-coding female side . 41
Figure 29 – Contact position S-coding front view . 42
Figure 30 – T-coding male side . 43
Figure 31 – Contact position T-coding front view. 45
Figure 32 – Engagement (mating) information . 46
Figure 33 – Gauge requirements . 49
Figure 34 – Contact resistance arrangement . 55
Figure 35 – Dynamic stress test arrangement . 56
Figure A.1 – Diameter of the female connector body . 65
Figure B.1 – Orientation of cable outlet for angled connectors in relation to the coding . 66

Table 1 – Ratings of connectors . 12
Table 2 – Styles of fixed connectors . 14
Table 3 – Dimensions of style EM, Figure 1 . 15
Table 4 – Dimensions of style FM, Figure 2 . 16
Table 5 – Dimensions of style EF, Figure 3 . 17
Table 6 – Dimensions of style FF, Figure 4 . 18
Table 7 – Dimensions of style IM, Figure 5 . 19
Table 8 – Dimensions of style IF, Figure 6 . 20
Table 9 – Styles of free connectors . 20
Table 10 – Dimensions of style JM, Figure 7 . 21
Table 11 – Dimensions of style KM, Figure 8 . 22
Table 12 – Dimensions of style LM, Figure 9 . 22
IEC 61076-2-111:2025 © IEC 2025
Table 13 – Dimensions of style MM, Figure 10. 23
Table 14 – Dimensions of style JF, Figure 11 . 24
Table 15 – Dimensions of style KF, Figure 12 . 25
Table 16 – Dimensions of style LF, Figure 13 . 26
Table 17 – Dimensions of style MF, Figure 14 . 26
Table 18 – Dimensions for Figure 15 . 28
Table 19 – Dimensions for Figure 16 . 29
Table 20 – Dimensions for Figure 18 . 31
Table 21 – Dimensions for Figure 19 . 32
Table 22 – Dimensions for Figure 21 . 34
Table 23 – Dimensions for Figure 22 . 35
Table 24 – Dimensions for Figure 24 . 38
Table 25 – Dimensions for Figure 25 . 39
Table 26 – Dimensions for Figure 27 . 41
Table 27 – Dimensions for Figure 28 . 42
Table 28 – Dimensions for Figure 30 . 44
Table 29 – Connectors dimensions in mated and locked position . 46
Table 30 – Gauges . 49
Table 31 – Climatic category . 49
Table 32 – Rated insulation voltage – Rated impulse withstand voltage – Pollution
degree . 50
Table 33 – Voltage proof . 51
Table 34 – Current-carrying capacity . 52
Table 35 – Number of mechanical operations . 52
Table 36 – Insertion and withdrawal forces. 53
Table 37 – Polarizing Insertion forces . 53
Table 38 – Number of test specimens . 57
Table 39 – Test group P . 58
Table 40 – Test group AP . 59
Table 41 – Test group BP . 61
Table 42 – Test group CP. 62
Table 43 – Test group DP. 63
Table 44 – Test group EP . 64
Table 45 – Test group NP. 64
Table A.1 – Diameter of the female connector body, dimension x, coding F, K, L, M, S,
and T . 65

IEC 61076-2-111:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Connectors for electrical and electronic equipment -
Product requirements -
Part 2-111: Circular connectors -
Detail specification for power connectors with M12 screw-locking

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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 61076-2-111 has been prepared by subcommittee 48B: Electrical connectors, of IEC
technical committee 48: Electrical connectors and mechanical structures for electrical and
electronic equipment. It is an International Standard.
This second edition cancels and replaces the first edition published in 2017. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) The structure of this document has been adapted to the new IEC template for standards.
New subclauses have been added. In Clause 5 and Clause 6, technical specifications have
been updated.
b) This document no longer includes the mating faces for M12 E-coded connectors.
IEC 61076-2-111:2025 © IEC 2025
c) Annex B (informative) Orientation of cable outlet in relation to coding has been added.
The text of this International Standard is based on the following documents:
Draft Report on voting
48B/3169/FDIS 48B/3180/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/publications.
A list of all parts in the IEC 61076 series, published under the general title Connectors for
electrical and electronic equipment – Product requirements, can be found on the IEC website.
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, or
– revised.
IEC 61076-2-111:2025 © IEC 2025
IEC SC 48B – Electrical connectors IEC 61076-2-111 Ed 2
Specification available from: IEC General secretariat or from the
addresses shown on the inside cover.
DETAIL SPECIFICATION in accordance with IEC 61076-1
Circular connectors
Power connectors with M12 screw-
locking
Male and female connectors
Male and female contacts
Rewirable – Non-rewirable
Free cable connectors
Straight and right-angled connectors
Fixed connectors
Flange mounting
Single hole mounting
IEC 61076-2-111:2025 © IEC 2025
1 Scope
This part of IEC 61076-2 describes 4- to 6-way circular connectors with M12 screw-locking with
current ratings 8, 12 or 16 A per contact and voltage ratings of 50 V AC / 60 V DC or 630 V
according to their coding, that are typically used for power supply and power applications in
industrial premises.
These connectors consist of both fixed and free connectors, either rewirable or non-rewirable.
Male connectors have round contacts Ø1,0 mm and Ø1,5 mm.
The different codings provided by this document prevent the mating of differently coded male
or female connectors to any other similarly sized interfaces, covered by other standards and
the cross-mating between the different codings provided by this document.
NOTE 1 M12 is the dimension of the thread of the screw locking mechanism of these circular connectors.
NOTE 2 Several other IEC standards are available covering additional styles of circular connectors with M12 × 1
screw-locking, see Bibliography.
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 60050-581, Advance edition of the International Electrotechnical Vocabulary - Chapter 581:
Electromechanical components for electronic equipment
IEC 60068-1, Environmental testing - Part 1: General and guidance
IEC 60068-2-20, Environmental testing – Part 2-20: Tests – Test Ta and Tb: Test methods for
solderability and resistance to soldering heat of devices with leads
IEC 60068-2-60, Environmental testing - Part 2: Tests - Test Ke: Flowing mixed gas corrosion
test
IEC 60352-2, Solderless connections - Part 2: Crimped connections - General requirements,
test methods and practical guidance
IEC 60352-3, Solderless connections - Part 3: Accessible insulation displacement (ID)
connections - General requirements, test methods and practical guidance
IEC 60352-4, Solderless connections - Part 4: Non-accessible insulation displacement (ID)
connections - General requirements, test methods and practical guidance
IEC 60352-5, Solderless connections - Part 5: Press-in connections - General requirements,
test methods and practical guidance
IEC 60352-6, Solderless connections - Part 6: Insulation piercing connections - General
requirements, test methods and practical guidance
IEC 60352-7, Solderless connections - Part 7: Spring clamp connections - General
requirements, test methods and practical guidance
IEC 60352-9, Solderless connections - Part 9: Ultrasonically welded connections - General
requirements, test methods and practical guidance
IEC 61076-2-111:2025 © IEC 2025
IEC 60512-1, Connectors for electrical and electronic equipment - Tests and measurements -
Part 1: Generic specification
IEC 60512-1-2, Connectors for electronic equipment - Tests and measurements - Part 1-2:
General examination - Test 1b: Examination of dimension and mass
IEC 60512-2-1, Connectors for electronic
...