Connectors for electrical and electronic equipment - Product requirements - Part 2-101: Circular connectors - Detail specification for M12 connectors with screw-locking

IEC 61076-2-101:2024 describes M12 screw-locking circular connectors with 2-way up to 17‑way, for data transmission with frequencies up to 100 MHz and signal and power transmission at up to 250 V rated voltage and up to 4 A rated current per contact.
These connectors consist of fixed and free connectors, either rewirable or non-rewirable.
Male connectors have round contacts, Ø 0,6 mm, Ø 0,76 mm, Ø 0,8 mm or Ø 1,0 mm according to number of ways and coding, all contacts with the same size.
The different codings prevent the mating of differently coded male and female connectors.
This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Technical specifications regarding dimensional information (Clause 5) and characteristics (Clause 6) have been updated, and new subclauses have been added.
b) New style NF (free connectors) has been added.
c) Fixed connectors with glass to metal seals (former styles WM, XM, YM, ZM and WF, XF, TF and ZF) are no longer covered by this document: relevant definitions and requirements have been removed.
d) The P-coding has been eliminated.
e) Annex B (informative) Steel conduit thread, sizes has been deleted and a new Annex B (informative) Orientation of cable outlet in relation to coding has been added.
f) The dimension specification of former styles AM and BM have been moved into a new Annex C (normative).

Connecteurs pour équipements électriques et électroniques - Exigences de produit - Partie 2-101: Connecteurs circulaires - Spécification particulière pour les connecteurs M12 à vis

La IEC 61076-2-101:2024 décrit les connecteurs circulaires à verrouillage par vis M12 de 2 à 17 voies, pour la transmission de données à des fréquences allant jusqu’à 100 MHz et la transmission de signaux et de puissance à une tension assignée allant jusqu’à 250 V et à un courant assigné allant jusqu’à 4 A par contact.
Ces connecteurs se composent d’embases et de fiches, démontables ou non.
Les connecteurs mâles possèdent des contacts ronds, Ø 0,6 mm, Ø 0,76 mm, Ø 0,8 mm ou Ø 1,0 mm, suivant le nombre de voies et le détrompage, tous les contacts ayant la même taille.
Les différents détrompages empêchent l’accouplement de connecteurs mâle et femelle ayant des détrompages différents.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
les spécifications techniques concernant les informations dimensionnelles (Article 5) et les caractéristiques (Article 6) ont été mises à jour, et de nouveaux paragraphes ont été ajoutés;
un nouveau modèle NF (fiches) a été ajouté;
les embases avec joint verre-métal (anciens modèles WM, XM, YM et ZM, ainsi que WF, XF, TF et ZF) ne sont plus couvertes par le présent document: les définitions et exigences correspondantes ont été supprimées;
le détrompage P a été supprimé;
l’Annexe B (informative), Filetage des conduits en acier, tailles, a été supprimée et une nouvelle Annexe B (informative), Orientation de la sortie de câble par rapport au détrompage, a été ajoutée;
la spécification des dimensions des anciens modèles AM et BM a été déplacée dans une nouvelle Annexe C (normative).

General Information

Status
Published
Publication Date
26-Nov-2024
Technical Committee
SC 48B - Electrical connectors
Current Stage
PPUB - Publication issued
Start Date
27-Nov-2024
Completion Date
22-Nov-2024

Relations

Effective Date
05-Sep-2023

Overview

The IEC 61076-2-101:2024 standard specifies the product requirements for M12 circular connectors with screw-locking used in electrical and electronic equipment. These connectors support data transmission frequencies up to 100 MHz and handle signal and power transmission at rated voltages up to 250 V and currents up to 4 A per contact. Designed for secure and reliable mechanical locking, this fourth edition updates dimensional, electrical, and mechanical specifications, introducing new connector styles and removing outdated codings.

This comprehensive international standard by the International Electrotechnical Commission (IEC) replaces the 2012 third edition, reflecting advancements and ensuring consistency in M12 connector design and performance worldwide.

Key Topics

  • Product Scope & Types: Covers M12 connectors ranging from 2-way to 17-way contacts, including rewirable and non-rewirable fixed and free connectors.
  • Connector Design:
    • Male connectors feature round contacts of various sizes (Ø 0.6 mm, 0.76 mm, 0.8 mm, and 1.0 mm), consistent per coding to prevent mismating.
    • Screw-locking mechanism guarantees secure mating under vibration and mechanical stress.
  • Performance Ratings:
    • Voltage rating: up to 250 V
    • Current rating: up to 4 A per contact
    • Frequency support: up to 100 MHz for data signals.
  • Technical Revisions in Edition 4.0:
    • Updated dimensional and electrical characteristic clauses.
    • Introduction of new NF style free connectors.
    • Removal of fixed connectors with glass-to-metal seals from scope.
    • Elimination of P-coding to streamline compatibility.
    • Adjusted annexes concerning cable outlet orientation and dimension specifications.
  • Safety & Testing:
    • Classified climatic categories ensure operation in various environmental conditions.
    • Comprehensive test schedules covering insulation, current carrying, mechanical durability, vibration, shock, and shielding properties.

Applications

The M12 connectors defined by IEC 61076-2-101:2024 are widely used in:

  • Industrial Automation: Efficient and reliable transmission of sensor, actuator, and control signals in factory automation systems.
  • Data Communication: Supporting Ethernet and other communication protocols with frequencies up to 100 MHz.
  • Power Transmission: Safe delivery of low-voltage power in compact and robust circular connectors.
  • Transportation & Robotics: High-reliability connections in harsh conditions requiring vibration resistance and secure locking.
  • Instrumentation & Measurement: Accurate, interference-free signal transmission in test and measurement devices.

Their versatile coding and locking ensure that connectors are reliably mated only with matching device connectors, preventing connection errors in complex systems.

Related Standards

For a comprehensive connector and interface ecosystem, IEC 61076-2-101:2024 relates closely to:

  • IEC 61076-1: General requirements and basic tests for connectors used in electrical and electronic equipment.
  • IEC 61076-2-x Series: Detailed specifications for other types of circular connectors with various locking mechanisms.
  • IEC 60529: Degrees of protection provided by enclosures (IP Code), referenced for the ingress protection levels of connectors.
  • ISO/IEC 11801: Generic cabling for customer premises, relevant when integrating M12 connectors into network data systems.
  • IEEE 802.3: Ethernet standards where M12 circular connectors are applied for industrial ethernet connections.

By adhering to IEC 61076-2-101:2024, manufacturers and system integrators ensure their M12 connectors meet global requirements for safety, performance, and interchangeability, facilitating reliable operation across diverse electrical and electronic applications. This standard supports product innovation and quality assurance in connector technology essential for modern industrial and communication infrastructures.

Standard

IEC 61076-2-101:2024 - Connectors for electrical and electronic equipment - Product requirements - Part 2-101: Circular connectors - Detail specification for M12 connectors with screw-locking Released:27. 11. 2024 Isbn:9782832244913

English and French language
143 pages
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Frequently Asked Questions

IEC 61076-2-101:2024 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Connectors for electrical and electronic equipment - Product requirements - Part 2-101: Circular connectors - Detail specification for M12 connectors with screw-locking". This standard covers: IEC 61076-2-101:2024 describes M12 screw-locking circular connectors with 2-way up to 17‑way, for data transmission with frequencies up to 100 MHz and signal and power transmission at up to 250 V rated voltage and up to 4 A rated current per contact. These connectors consist of fixed and free connectors, either rewirable or non-rewirable. Male connectors have round contacts, Ø 0,6 mm, Ø 0,76 mm, Ø 0,8 mm or Ø 1,0 mm according to number of ways and coding, all contacts with the same size. The different codings prevent the mating of differently coded male and female connectors. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Technical specifications regarding dimensional information (Clause 5) and characteristics (Clause 6) have been updated, and new subclauses have been added. b) New style NF (free connectors) has been added. c) Fixed connectors with glass to metal seals (former styles WM, XM, YM, ZM and WF, XF, TF and ZF) are no longer covered by this document: relevant definitions and requirements have been removed. d) The P-coding has been eliminated. e) Annex B (informative) Steel conduit thread, sizes has been deleted and a new Annex B (informative) Orientation of cable outlet in relation to coding has been added. f) The dimension specification of former styles AM and BM have been moved into a new Annex C (normative).

IEC 61076-2-101:2024 describes M12 screw-locking circular connectors with 2-way up to 17‑way, for data transmission with frequencies up to 100 MHz and signal and power transmission at up to 250 V rated voltage and up to 4 A rated current per contact. These connectors consist of fixed and free connectors, either rewirable or non-rewirable. Male connectors have round contacts, Ø 0,6 mm, Ø 0,76 mm, Ø 0,8 mm or Ø 1,0 mm according to number of ways and coding, all contacts with the same size. The different codings prevent the mating of differently coded male and female connectors. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Technical specifications regarding dimensional information (Clause 5) and characteristics (Clause 6) have been updated, and new subclauses have been added. b) New style NF (free connectors) has been added. c) Fixed connectors with glass to metal seals (former styles WM, XM, YM, ZM and WF, XF, TF and ZF) are no longer covered by this document: relevant definitions and requirements have been removed. d) The P-coding has been eliminated. e) Annex B (informative) Steel conduit thread, sizes has been deleted and a new Annex B (informative) Orientation of cable outlet in relation to coding has been added. f) The dimension specification of former styles AM and BM have been moved into a new Annex C (normative).

IEC 61076-2-101:2024 is classified under the following ICS (International Classification for Standards) categories: 31.220.10 - Plug-and-socket devices. Connectors. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 61076-2-101:2024 has the following relationships with other standards: It is inter standard links to IEC 61076-2-101:2012. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase IEC 61076-2-101:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.

Standards Content (Sample)


IEC 61076-2-101 ®
Edition 4.0 2024-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electrical and electronic equipment – Product requirements –
Part 2-101: Circular connectors – Detail specification for M12 connectors with
screw-locking
Connecteurs pour équipements électriques et électroniques – Exigences de
produit –
Partie 2-101: Connecteurs circulaires – Spécification particulière pour les
connecteurs M12 à vis
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IEC 61076-2-101 ®
Edition 4.0 2024-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electrical and electronic equipment – Product requirements –

Part 2-101: Circular connectors – Detail specification for M12 connectors with

screw-locking
Connecteurs pour équipements électriques et électroniques – Exigences de

produit –
Partie 2-101: Connecteurs circulaires – Spécification particulière pour les

connecteurs M12 à vis
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.10  ISBN 978-2-8322-4491-3

– 2 – IEC 61076-2-101:2024 © IEC 2024
CONTENTS
FOREWORD . 7
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 13
4 Technical information . 13
4.1 Recommended method of termination for rewirable connectors . 13
4.2 Connector coding, number of contacts, ratings and characteristics . 13
4.3 Systems of levels . 14
4.3.1 Performance level . 14
4.3.2 Compatibility levels, according to IEC 61076-1 . 14
4.4 Classification into climatic categories . 14
4.5 Creepage and clearance distances . 14
4.6 Current-carrying capacity . 14
4.7 Marking . 14
4.8 Safety aspects . 14
5 Dimensional information . 15
5.1 General . 15
5.2 Fixed connectors . 15
5.2.1 General . 15
5.2.2 Style DM . 16
5.2.3 Style EM . 17
5.2.4 Style FM . 18
5.2.5 Style GM . 18
5.2.6 Style HM . 19
5.2.7 Style EF . 19
5.2.8 Style FF . 20
5.2.9 Style GF . 21
5.2.10 Style HF . 21
5.3 Free connectors . 22
5.3.1 General . 22
5.3.2 Style JM . 23
5.3.3 Style KM . 23
5.3.4 Style LM . 24
5.3.5 Style MM and NM . 25
5.3.6 Style JF . 26
5.3.7 Style KF . 26
5.3.8 Style LF . 27
5.3.9 Style MF and NF . 28
5.4 Interface dimensions . 29
5.4.1 Pin front and side view A-coding up to 5-way . 29
5.4.2 Pin front and side view A-coding up to 8-way . 30
5.4.3 Pin front and side view A-coding up to 12-way . 32
5.4.4 Pin front and side view A-coding up to 17-way . 34
5.4.5 Pin front and side view up to B-coding . 37
5.4.6 Pin front and side view C-coding 3-way . 38
5.4.7 Pin front and side view C-coding 4-way . 39
5.4.8 Pin front and side view C-coding 5-way . 41

5.4.9 Pin front and side view C-coding 6-way . 42
5.4.10 Pin front and side view D-coding . 44
5.5 Engagement (mating) information . 46
5.6 Gauges – Sizing gauges and retention force gauges . 49
6 Characteristics . 50
6.1 General . 50
6.2 Pin assignment and other definitions . 50
6.3 Classification into climatic categories . 50
6.4 Electrical characteristics . 51
6.4.1 Rated insulation voltage – Rated impulse voltage – Pollution degree . 51
6.4.2 Voltage proof . 51
6.4.3 Current-carrying capacity . 52
6.4.4 Contact resistance . 53
6.4.5 Insulation resistance . 53
6.5 Mechanical characteristics . 53
6.5.1 Mechanical operation . 53
6.5.2 Insertion and withdrawal forces . 54
6.5.3 Contact retention in insert . 54
6.5.4 Polarizing and coding method . 54
6.6 Other characteristics . 54
6.6.1 Vibration (sinusoidal) . 54
6.6.2 Shock . 55
6.6.3 Degree of protection provided by enclosures (IP code) . 55
6.6.4 Shielding properties . 55
6.7 Environmental aspects – Marking of insulation material (plastics) . 55
7 Test schedule . 55
7.1 General . 55
7.1.1 Overview . 55
7.1.2 Climatic category . 55
7.1.3 Creepage and clearance distances . 55
7.1.4 Arrangement for contact resistance measurement . 56
7.1.5 Arrangement for dynamic stress tests . 56
7.1.6 Wiring of specimens . 58
7.2 Test schedules . 58
7.2.1 Basic (minimum) test schedule . 58
7.2.2 Full test schedule . 58
Annex A (informative) Diameter of the female connector body . 67
Annex B (informative) Orientation of cable outlet in relation to coding . 68
Annex C (normative) Dimensions of connector insert . 69
C.1 General . 69
C.2 Connector insert, male contacts, without locking thread . 69
C.3 Connector insert, male contacts, with M12 locking thread . 69
Bibliography . 71

Figure 1 – Fixed connector, male contacts, square flange front mounting . 16
Figure 2 – Fixed connector, male contacts, with wire / cable, single hole mounting
thread M16 × 1,5 . 17

– 4 – IEC 61076-2-101:2024 © IEC 2024
Figure 3 – Fixed connector, male contacts, with wire / cable, single hole mounting
thread M20 × 1,5 . 18
Figure 4 – Fixed connector, male contacts, with wire / cable, single hole mounting

thread M16 × 1,5, mounting orientation . 18
Figure 5 – Fixed connector, male contacts, with wire / cable, single hole mounting
thread M20 × 1,5, mounting orientation . 19
Figure 6 – Fixed connector, female contacts, with wire / cable, single hole mounting
thread M16 × 1,5 . 20
Figure 7 – Fixed connector, female contacts, with wire / cable, single hole mounting

thread M20 × 1,5 . 20
Figure 8 – Fixed connector, female contacts, with wire / cable, single hole mounting
thread M16 × 1,5, mounting orientation . 21
Figure 9 – Fixed connector, female contacts, with wire / cable, single hole mounting
thread M20 × 1,5, mounting orientation . 22
Figure 10 – Rewirable connector, male contacts, straight version, with locking nut . 23
Figure 11 – Rewirable connector, male contacts, right angled version, with locking nut . 24
Figure 12 – Non-rewirable connector, male contacts, straight version, with locking nut . 24
Figure 13 – Non-rewirable connector, male contacts, right angled version, with
locking nut . 25
Figure 14 – Rewirable connector, female contacts, straight version, with locking nut . 26
Figure 15 – Rewirable connector, female contacts, right angled version, with
locking nut . 27
Figure 16 – Non-rewirable connector, female contacts, straight version, with
locking nut . 27
Figure 17 – Non-rewirable connector, female contacts, right angled version, with

locking nut . 28
Figure 18 – Pin front and side view A-coding, up to 5-way . 29
Figure 19 – Contact position A-coding up to 5-way, front view . 30
Figure 20 – Pin front and side view A-coding, up to 8-way . 31
Figure 21 – Contact position A-coding up to 8-way, front view . 32
Figure 22 – Pin front and side view A-coding, up to 12-way . 33
Figure 23 – Contact position A-coding up to 12-way, front view. 34
Figure 24 – Pin front and side view A-coding, up to 17-way . 35
Figure 25 – Contact position A-coding up to 17-way, front view. 36
Figure 26 – Pin front and side view B-coding, up to 5-way . 37
Figure 27 – Contact position B-coding up to 5-way, front view . 38
Figure 28 – Pin front and side view C-coding, 3-way . 38
Figure 29 – Contact position C-coding 3-way, front view . 39
Figure 30 – Pin front and side view C-coding, 4-way . 40
Figure 31 – Contact position C-coding 4-way, front view . 41
Figure 32 – Pin front and side view C-coding, 5-way . 41
Figure 33 – Contact position C-coding 5-way, front view . 42
Figure 34 – Pin front and side view C-coding, 6-way . 43
Figure 35 – Contact position C-coding 6-way, front view . 44
Figure 36 – Pin front and side view D-coding . 44
Figure 37 – Contact position D-coding, front view . 45

Figure 38 – Engagement (mating) information . 46
Figure 39 – Gauge dimensions . 49
Figure 40 – Contact resistance arrangement . 56
Figure 41 – Dynamic stress test arrangement . 57
Figure A.1 – Diameter of the female connector body . 67
Figure B.1 – Orientation of cable outlet in relation to the coding – Free male
connectors according to Table 12 . 68
Figure C.1 – Connector insert, male contacts, without locking thread . 69
Figure C.2 – Connector insert, male contacts . 70

Table 1 – Ratings of connectors . 13
Table 2 – Styles of fixed connectors . 15
Table 3 – Dimensions of style DM, Figure 1 . 17
Table 4 – Dimensions of style EM, Figure 2 . 17
Table 5 – Dimensions of style FM, Figure 3 . 18
Table 6 – Dimensions of style GM, Figure 4 . 19
Table 7 – Dimensions of style HM, Figure 5 . 19
Table 8 – Dimensions of style EF, Figure 6 . 20
Table 9 – Dimensions of style FF, Figure 7 . 21
Table 10 – Dimensions of style GF, Figure 8 . 21
Table 11 – Dimensions of style HF, Figure 9 . 22
Table 12 – Styles of free connectors . 22
Table 13 – Dimensions of style JM, Figure 10 . 23
Table 14 – Dimensions of style KM, Figure 11 . 24
Table 15 – Dimensions of style LM, Figure 12 . 25
Table 16 – Dimensions of style MM and NM, Figure 13 . 25
Table 17 – Dimensions of style JF, Figure 14 . 26
Table 18 – Dimensions of style KF, Figure 15 . 27
Table 19 – Dimensions of style LF, Figure 16 . 28
Table 20 – Dimensions of style MF and NF, Figure 17 . 28
Table 21 – Dimensions for Figure 18. 29
Table 22 – Dimensions for Figure 20. 31
Table 23 – Dimensions for Figure 22. 33
Table 24 – Dimensions for Figure 24. 35
Table 25 – Dimensions for Figure 26. 37
Table 26 – Dimensions for Figure 28. 39
Table 27 – Dimensions for Figure 30. 40
Table 28 – Dimensions for Figure 32. 42
Table 29 – Dimensions for Figure 34. 43
Table 30 – Dimensions for Figure 36. 45
Table 31 – Connectors dimensions in mated and locked position . 47
Table 32 – Gauges . 50
Table 33 – Climatic category . 50

– 6 – IEC 61076-2-101:2024 © IEC 2024
Table 34 – Rated insulation voltage – Rated impulse voltage – Pollution degree . 51
Table 35 – Voltage proof . 52
Table 36 – Current-carrying capacity . 53
Table 37 – Number of mechanical operations . 54
Table 38 – Insertion and withdrawal forces . 54
Table 39 – Number of test specimens . 58
Table 40 – Test group P . 59
Table 41 – Test group AP . 60
Table 42 – Test group BP . 62
Table 43 – Test group CP . 63
Table 44 – Test group DP . 64
Table 45 – Test group EP . 65
Table 46 – Test group FP . 65
Table 47 – Test group NP . 66
Table A.1 – Diameter of the female connector body, dimension x . 67
Table C.1 – Dimensions of connector insert, Figure C.1 . 69
Table C.2 – Dimensions of connector insert, Figure C.2 . 70

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 2-101: Circular connectors –
Detail specification for M12 connectors with screw-locking

FOREWORD
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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 61076-2-101 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 fourth edition cancels and replaces the third edition published in 2012. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Technical specifications regarding dimensional information (Clause 5) and characteristics
(Clause 6) have been updated, and new subclauses have been added.
b) New style NF (free connectors) has been added.

– 8 – IEC 61076-2-101:2024 © IEC 2024
c) Fixed connectors with glass to metal seals (former styles WM, XM, YM, ZM and WF, XF, TF
and ZF) are no longer covered by this document: relevant definitions and requirements have
been removed.
d) The P-coding has been eliminated.
e) Annex B (informative) Steel conduit thread, sizes has been deleted and a new Annex B
(informative) Orientation of cable outlet in relation to coding has been added.
f) The dimension specification of former styles AM and BM have been moved into a new Annex
C (normative).
The text of this International Standard is based on the following documents:
Draft Report on voting
48B/3111/FDIS 48B/3129/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 of IEC 61076 series, 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 SC 48B – Electrical connectors IEC 61076-2-101 Ed 4
Specification available from:
IEC General secretariat or from the addresses shown on the inside
cover.
DETAIL SPECIFICATION in accordance with IEC 61076-1
Outline drawing Product description
Circular connectors M12
2- to 17-way
Male and female contacts
Male and female connectors
Rewirable – Non-rewirable
Free cable connectors
Straight and right angle connectors
Fixed connectors
Flange mounting
Single hole mounting
Connector insert
– 10 – IEC 61076-2-101:2024 © IEC 2024
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 2-101: Circular connectors –
Detail specification for M12 connectors with screw-locking

1 Scope
This part of IEC 61076 describes M12 screw-locking circular connectors with 2-way up to
17-way, for data transmission with frequencies up to 100 MHz and signal and power
transmission at up to 250 V rated voltage and up to 4 A rated current per contact.
These connectors consist of fixed and free connectors, either rewirable or non-rewirable.
Male connectors have round contacts, Ø 0,6 mm, Ø 0,76 mm, Ø 0,8 mm or Ø 1,0 mm according
to number of ways and coding, all contacts with the same size.
The different codings prevent the mating of differently coded male and female connectors.
NOTE 1 M12 is the dimension of the thread of the screw-locking mechanism of these circular connectors.
NOTE 2 These connectors are typically used for connecting industrial automation devices for process measurement
and control.
NOTE 3 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, International Electrotechnical Vocabulary – Part 581: Electromechanical
components for electronic equipment
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60352 (all parts), Solderless connections
IEC 60512-1, Connectors for electronic equipment – Tests and measurements – Part 1: General
IEC 60512-1-1, Connectors for electronic equipment – Tests and measurements – Part 1-1:
General examination – Test 1a: Visual examination
IEC 60512-1-2, Connectors for electronic equipment – Tests and measurements – Part 1-2:
General examination – Test 1b: Examination of dimension and mass
IEC 60512-1-100, Connectors for electronic equipment – Tests and measurements –
Part 1-100: General – Applicable publications

IEC 60512-2-1, Connectors for electronic equipment – Tests and measurements – Part 2-1:
Electrical continuity and contact resistance tests – Test 2a: Contact resistance – Millivolt level
method
IEC 60512-2-2, Connectors for electronic equipment – Tests and measurements – Part 2-2:
Electrical continuity and contact resistance tests – Test 2b: Contact resistance – Specified test
current method
IEC 60512-2-5, Connectors for electronic equipment – Tests and measurements – Part 2-5:
Electrical continuity and contact resistance tests – Test 2e: Contact disturbance
IEC 60512-3-1, Connectors for electronic equipment – Tests and measurements – Part 3-1:
Insulation tests – Test 3a: Insulation resistance
IEC 60512-4-1, Connectors for electronic equipment – Tests and measurements – Part 4-1:
Voltage stress tests – Test 4a: Voltage proof
IEC 60512-5-1, Connectors for electronic equipment – Tests and measurements – Part 5-1:
Current-carrying capacity tests – Test 5a: Temperature rise
IEC 60512-6-3, Connectors for electronic equipment – Tests and measurements – Part 6-3:
Dynamic stress tests – Test 6c: Shock
IEC 60512-6-4, Connectors for electronic equipment – Tests and measurements – Part 6-4:
Dynamic stress tests – Test 6d: Vibration (sinusoidal)
IEC 60512-9-1, Connectors for electronic equipment – Tests and measurements – Part 9-1:
Endurance tests – Test 9a: Mechanical operation
IEC 60512-9-2, Connectors for electronic equipment – Tests and measurements – Part 9-2:
Endurance tests – Test 9b: Electrical load and temperature
IEC 60512-11-1, Connectors for electrical and electronic equipment – Tests and measurements
– Part 11: Climatic tests – Section 1: Test 11a – Climatic sequence
IEC 60512-11-3, Connectors for electronic equipment – Tests and measurements – Part 11-3:
Climatic tests – Test 11c: Damp heat, steady state
IEC 60512-11-4, Connectors for electronic equipment – Tests and measurements – Part 11-4:
Climatic tests – Test 11d: Rapid change of temperature
IEC 60512-11-7, Connectors for electronic equipment – Tests and measurements – Part 11-7:
Climatic tests – Test 11g: Flowing mixed gas corrosion test
IEC 60512-11-9, Connectors for electronic equipment – Tests and measurements – Part 11-9:
Climatic tests – Test 11i: Dry heat
IEC 60512-11-10, Connectors for electronic equipment – Tests and measurements –
Part 11-10: Climatic tests – Test 11j: Cold
IEC 60512-11-12, Connectors for electronic equipment – Tests and measurements –
Part 11-12: Climatic tests – Test 11m: Damp heat, cyclic
IEC 60512-13-2, Connectors for electronic equipment – Tests and measurements – Part 13-2:
Mechanical operation tests – Test 13b: Insertion and withdrawal forces
IEC 60512-13-5, Connectors for electronic equipment – Tests and measurements – Part 13-5:
Mechanical operation tests – Test 13e: Polarizing and keying method

– 12 – IEC 61076-2-101:2024 © IEC 2024
IEC 60512-14-7, Electromechanical components for 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 – 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 electronic equipment – Basic testing
procedures and measuring methods – Part 19: Chemical resistance tests – Section 3: Test 19c
– Fluid resistance
IEC 60512-23-3, Connectors for electrical and electronic equipment – Tests and measurements
– Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of connectors and
accessories – Line injection method
IEC 60512-29-100, Connectors for electronic equipment – Tests and measurements –
Part 29-100: Signal integrity tests up to 500 MHz on M12 style connectors – Tests 29a to 29g
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 systems – Part 1:
Principles, requirements and tests
IEC 60998-2-1, Connecting devices for low-voltage circuits for household and similar purposes
– Part 2-1: Particular requirements for connecting devices as separate entities with screw-type
clamping units
IEC 60999-1, Connecting devices – Electrical copper conductors – Safety requirements for
screw-type and screwless-type clamping units – Part 1: General requirements and particular
2 2
requirements for clamping units for conductors from 0,2 mm up to 35 mm (included)
IEC 61076-1:2006, Connectors for electronic equipment – Product requirements – Part 1:
Generic specification
IEC 61076-1:2006/AMD1:2019
IEC 61076-2-010:2021, Connectors for electrical and electronic equipment – Product
requirements – Part 2-010: Circular connectors – Detail specification for connectors with outer
or inner push-pull locking mechanism, based on mating interfaces according to
IEC 61076-2-101, IEC 61076-2-109, IEC 61076-2-111 and IEC 61076-2-113
IEC 61076-2-012:2020, Connectors for electrical and electronic equipment – Product
Requirements – Part 2-012: Circular connectors – Detail specification for connectors with inner
p
...

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IEC 61076-2-101:2024は、電気および電子機器向けの接続器に関する標準であり、特にM12スクリューロック円形コネクタに関する詳細仕様を提供しています。この標準の適用範囲は、データ伝送のための2端子から17端子のコネクタであり、周波数は最大100 MHz、信号および電力伝送においては最大250 Vの定格電圧および4 Aの定格電流を提供します。固定および自由コネクタの両方が含まれ、再配線可能なものと再配線不可能なものがあります。 この第四版には、前版である第三版(2012年発行)の重要な技術的見直しが含まれています。特に、寸法情報(第5条)および特性(第6条)に関する技術仕様が更新され、新たなサブ条が追加されるなど、標準化が進められています。また、新しいスタイルのNF(自由コネクタ)が追加され、バリエーションが増えています。 旧仕様に関しては、固定コネクタのガラス対金属シールに関するスタイル(WM、XM、YM、ZMおよびWF、XF、TF、ZF)は、本書ではカバーされないことになり、その定義および要求事項が削除されています。さらに、Pコーディングが廃止され、コーディングに対するケーブルアウトレットの向きに関する新しい附属書B(情報的)が追加されている点も注目に値します。旧スタイルのAMおよびBMの寸法仕様は、新しい附属書C(規範的)に移動され、文書の構造がより明確になっています。 IEC 61076-2-101:2024は、現代の接続技術における進化を反映しており、関連企業や技術者にとって、最新の要件に即した信頼性の高いコネクタを選定するための重要なリソースとなるでしょう。この標準は、データおよび電力伝送における安全性と互換性を確保するために、より一層の厳密さをもたらしています。

IEC 61076-2-101:2024 표준은 전기 및 전자 장비용 M12 스크류 잠금 원형 커넥터에 대한 제품 요구사항을 다루고 있습니다. 본 표준의 범위는 2-way부터 17-way까지의 커넥터를 포함하며, 100 MHz까지의 주파수에서 데이터 전송과 250 V의 정격 전압, 4 A의 정격 전류에서 신호 및 전력을 전송할 수 있는 기능을 제공합니다. 이 표준의 강점 중 하나는 각기 다른 코드화가 적용된 남성 및 여성 커넥터의 조합을 방지하는 구조입니다. M12 커넥터는 원형 컨택트로 구성되어 있으며, 접촉 면적의 크기도 다양하여, Ø 0.6 mm, Ø 0.76 mm, Ø 0.8 mm, Ø 1.0 mm의 직경을 선택할 수 있습니다. 이러한 다양성은 사용자의 요구에 맞춰 적절한 커넥터를 선택할 수 있는 유연성을 제공합니다. 또한, 2024년 개정판에서는 이전 판에서 검토된 여러 기술적 사양들이 최신화되었습니다. 특히, 치수 정보(5조)와 특성(6조)에 대한 기술적 사양이 업데이트되었고, 새로운 하위 조항이 추가되었습니다. 또한, 새로운 스타일의 NF(자유 커넥터)가 추가되어 일반 사용의 편리함을 더했습니다. 구조적 변화로는 고정 커넥터에 대한 정의와 요구사항이 제거된 점이 있습니다. 이는 과거의 여러 스타일(WM, XM, YM, ZM, WF, XF, TF, ZF)에 의한 혼선 가능성을 줄이기 위한 취지로 해석됩니다. P-코딩의 제거는 커넥터의 호환성 문제를 해결하는 데 긍정적인 영향을 미칠 것으로 보이며, 신규 부록 B에서 케이블 아울렛의 방향성에 대한 정의가 추가되어 사용자의 선택을 보다 명확하게 안내할 수 있습니다. 마지막으로, 이전 스타일 AM 및 BM의 치수 사양이 새로운 규범 부록 C로 이동되어 체계적인 접근성을 높였습니다. 종합적으로, IEC 61076-2-101:2024 표준은 M12 스크류 잠금 원형 커넥터의 성능과 적합성을 보장하기 위한 필수적인 기준을 제공하며, 업계의 요구에 부합하는 현대적인 설계를 반영하고 있습니다. 이는 전기 및 전자 장비의 신뢰성을 높이는 데 기여할 것입니다.

The standard IEC 61076-2-101:2024 provides comprehensive guidelines for M12 screw-locking circular connectors, focusing on their product requirements crucial for electrical and electronic equipment. This latest fourth edition marks a technical revision, superseding the previous third edition published in 2012, and offers several significant updates that enhance the clarity and applicability of the standard. One of the core strengths of this standard lies in its detailed scope, which encompasses connectors ranging from 2-way up to 17-way configurations. These are designed specifically for reliable data transmission at frequencies up to 100 MHz as well as for signal and power transmission at rated voltages up to 250 V and rated currents up to 4 A per contact. This robust framework ensures that users can achieve high performance and durability in various applications. Another notable strength is the comprehensive nature of the dimensional specifications and characteristics, which have been thoughtfully updated in Clause 5 and Clause 6. These revisions address the practical needs of manufacturers and users alike, ensuring compatibility and reliability in connector systems. The introduction of a new style NF (free connectors) expands the versatility of the M12 connectors, catering to a broader range of applications. The removal of outdated components, such as the P-coding and previously included fixed connectors with glass to metal seals, reflects a commitment to streamline the specifications and improve safety and performance. Furthermore, the addition of informative Annex B, which addresses the orientation of the cable outlet in relation to coding, enhances usability by providing a clearer understanding of how to implement these connectors effectively. The normative Annex C, detailing the dimensional specifications for former styles AM and BM, adds further clarity and utility to the standard. The relevance of IEC 61076-2-101:2024 in today’s technological landscape is underscored by its focus on maintaining high-quality standards in the manufacturing of connectors, ensuring they meet contemporary requirements for data integrity and electrical performance. By updating technical specifications and removing obsolete elements, this standard plays a crucial role in fostering innovation while ensuring safety and compatibility in electrical and electronic systems.