FprEN IEC 61076-2-104:2025

Connectors for electronic equipment - Product requirements - Part 2-104: Circular connectors - Detail specification for circular connectors with M8 screw-locking or snap-locking

Lichtwellenleiterkabel - Teil 1-104: Fachgrundspezifikation - Grundlegende Prüfverfahren für optische Kabel - Mechanische Prüfverfahren - Schlag, Verfahren E4

Connecteurs pour équipements électroniques - Exigences de produit - Partie 2-104: Connecteurs circulaires - Spécification particulière pour les connecteurs circulaires m8 à vis ou à encliquetage

Konektorji za elektronsko opremo - Zahteve za izdelek - 2-104. del: Okrogli konektorji - Podrobna specifikacija za okrogle konektorje z vijačnim M8 ali zaskočnim zaklepanjem

General Information

• Status: Not Published
• Publication Date: 01-Apr-2026
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: CLC/SR 48B - Connectors
• Current Stage: 5020 - Vote circulated - Formal Approval
• Start Date: 21-Nov-2025
• Due Date: 31-Jul-2025
• Completion Date: 21-Nov-2025
• Ref Project: kSIST FprEN IEC 61076-2-104:2025 - Connectors for electronic equipment - Product requirements - Part 2-104: Circular connectors - Detail specification for circular connectors with m8 screw-locking or snap-locking

Relations

• Revises: EN 61076-2-104:2014 - Connectors for electronic equipment - Product requirements - Part 2-104: Circular connectors - Detail specification for circular connectors with M8 screw-locking or snap-locking
• Effective Date: 24-Oct-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 61076-2-104:2024
01-december-2024
Konektorji za elektronsko opremo - Zahteve za izdelek - 2-104. del: Okrogli
konektorji - Podrobna specifikacija za okrogle konektorje z vijačnim M8 ali
zaskočnim zaklepanjem
Connectors for electronic equipment - Product requirements - Part 2-104: Circular
connectors - Detail specification for circular connectors with m8 screw-locking or snap-
locking
Connecteurs pour équipements électroniques - Exigences de produit - Partie 2-104:
Connecteurs circulaires - Spécification particulière pour les connecteurs circulaires m8 à
vis ou à encliquetage
Ta slovenski standard je istoveten z: prEN IEC 61076-2-104:2024
ICS:
31.220.10 Vtiči in vtičnice, konektorji Plug-and-socket devices.
Connectors
oSIST prEN IEC 61076-2-104:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 61076-2-104:2024

oSIST prEN IEC 61076-2-104:2024
48B/3121/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61076-2-104 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-10-18 2025-01-10
SUPERSEDES DOCUMENTS:
48B/3070/CD, 48B/3104/CC
IEC SC 48B : ELECTRICAL CONNECTORS
SECRETARIAT: SECRETARY:
United States of America Mr Jeffrey Toran
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the
final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Connectors for electronic equipment - Product requirements - Part 2-104: Circular connectors -
Detail specification for circular connectors with M8 screw-locking or snap-locking

PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

oSIST prEN IEC 61076-2-104:2024
IEC CDV 61076-2-104/Ed3 © IEC 2024 – 2 – 48B/3121/CDV
1 CONTENTS
2 FOREWORD . 6
3 Bibliography . 63
5 1 Scope . 9
6 2 Normative references . 9
7 3 Terms and definitions . 11
8 3.1 . 11
9 mounting orientation . 11
10 4 Technical information . 12
11 4.1 Recommended method of termination for rewirable connectors . 12
12 4.2 Connector coding, number of contacts, ratings and characteristics . 12
13 4.3 Systems of levels . 12
14 4.3.1 Performance level. 12
15 4.3.2 Compatibility levels, according to IEC 61076-1 . 12
16 4.4 Classification into climatic categories . 12
17 4.5 Creepage and clearance distances . 12
18 4.6 Current-carrying capacity . 13
19 4.7 Marking . 13
20 4.8 Safety aspects. 13
21 5 Dimensional information . 14
22 5.1 General . 14
23 5.2 Fixed connectors . 14
24 5.2.1 Style BM . 14
25 5.2.2 Style CM . 15
26 5.2.3 Style EM . 16
27 5.2.4 Style EF . 16
28 5.3.1 Style JM . 19
29 5.3.2 Style KM . 20
30 5.3.3 Style NM . 20
31 5.3.4 Style OM . 21
32 5.3.5 Style LM . 22
33 5.3.6 Style MM . 23
34 5.3.7 Style JF . 23
35 5.3.8 Style KF . 24
36 5.3.9 Style NF . 25
37 5.3.10 Style QF . 25
38 5.3.11 Style LF . 26
39 5.3.12 Style MF . 27
40 5.4 Interface dimensions . 28
41 5.4.1 Pin front and side view A-coding 3-way . 28
42 5.4.2 Pin front and side view A-coding 4-way . 29
43 5.4.3 Pin front and side view A-coding 6-way . 31
44 5.4.4 Pin front and side view A-coding 8-way . 33
45 5.4.5 Pin front and side view B-coding 5-way . 34
46 5.4.6 Pin front and side view C-coding, 12-way . 36
47 5.4.7 Pin side view for snap- and screw-, snap- and screw-locking . 38

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48 5.5 Engagement (mating) information . 39
49 5.6 Gauges . 41
50 5.6.1 Sizing gauges and retention force gauges . 41
51 6 Characteristics . 43
52 6.1 General . 43
53 6.2 Pin assignment and other definitions . 43
54 6.3 Classification into climatic categories . 43
55 6.4 Electrical characteristics . 43
56 6.4.1 Rated insulation voltage – Rated impulse voltage – Pollution degree . 43
57 Voltage proof . 44
6.4.2
58 6.4.3 Current-carrying capacity. 44
59 6.4.4 Contact resistance . 45
60 6.4.5 Insulation resistance . 45
61 6.5 Mechanical characteristics . 46
62 6.5.1 Mechanical operation . 46
63 Insertion and withdrawal forces . 46
6.5.2
64 6.5.3 Contact retention in insert . 46
65 6.5.4 Polarizing and coding method . 46
66 6.6 Other characteristics . 47
67 6.6.1 Vibration (sinusoidal) . 47
68 6.6.2 Shock . 47
69 Degree of protection provided by enclosures (IP code) . 47
6.6.3
70 6.7 Environmental aspects . 47
71 6.7.1 Marking of insulation material (plastics) . 47
72 7 Test schedule . 48
73 General . 48
7.1
74 7.1.1 Climatic category . 48
75 7.1.2 Creepage and clearance distances . 48
76 7.1.3 Arrangement for contact resistance measurement . 48
77 7.1.4 Arrangement for dynamic stress tests . 49
78 7.1.5 Wiring of specimens . 50
79 Test schedules . 51
7.2
80 7.2.1 Basic (minimum) test schedule . 51
81 7.2.2 Full test schedule . 51
82 Annex A (informative) . 61
83 Diameter of the female connector body . 61
A.1
84 Annex B (informative) . 62
85 B.1 Orientation of cable outlet in relation to coding . 62
87 Figure 1 – Connector insert with male contacts, dip solder long version with screw- and
88 snap-locking . 15
89 Figure 2 – Connector insert with male contacts, dip solder short version with screw-
90 and snap-locking. 15
91 Figure 3 – Fixed connector with wires, male contacts, single hole mounting . 16
92 Figure 4 – Fixed connector with wires, female contacts, single hole mounting . 17
93 Figure 5 – Fixed connector with wires, female contacts, single hole mounting . 18
94 Figure 6 – Rewirable connector, male contacts, straight version with screw-locking . 19
95 Figure 7 – Rewirable connector, male contacts, right angled version with screw-locking . 20

oSIST prEN IEC 61076-2-104:2024
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96 Figure 8 – Non-rewirable connector, male contacts, straight version with screw- and
97 snap-locking . 20
98 Figure 9 – Non-rewirable connector, male contacts, straight version with snap-locking . 21
99 Figure 10 – Non-rewirable connector, male contacts, angled version with snap-locking . 22
100 Figure 11 – Non-rewirable connector, male contacts, straight version with screw-
locking . 22
102 Figure 12 – Non-rewirable connector, male contacts, right angled version with screw-
103 locking . 23
104 Figure 13 - Rewirable connector, female contacts, straight version with screw-locking . 24
105 Figure 14 – Rewirable connector, female contacts, right angled version, with screw-
106 locking . 24
107 Figure 15 – Non-rewirable connector, female contacts, straight version with snap-
108 locking . 25
109 Figure 16 – Non-rewirable connector, female contacts, right angled version with snap-
110 locking . 26
111 Figure 17 – Non-rewirable connector, female contacts, straight version, with screw-
112 locking . 27
113 Figure 18 – Non-rewirable connector, female contacts, right angled version, with
114 screw-locking . 27
Figure 19 – Pin front and side view A-coding, 3-way . 28
116 Figure 20 – Contact position A-coding, 3-way, front view . 29
Figure 21 – Pin front and side view A-coding, 4-way . 29
118 Figure 22 – Contact position A-coding, 4-way, front view . 30
Figure 23 – Pin front and side view A-coding, 6-ways . 31
120 Figure 24 – Contact position A-coding, 6-way, front view . 32
Figure 25 – Pin front and side view A-coding, 8-ways . 33
122 Figure 26 – Contact position A-coding, 8-way, front view . 34
Figure 27 – Pin front and side view B-coding, 5-ways . 34
124 Figure 28 – Contact position B-coding 5-way, front view . 35
125 Figure 29 – Pin front and side view C-coding,12-ways . 36
126 Figure 30 – Contact position C-coding 12-way, front view . 37
Figure 31 – Pin side view snap- and screw-, snap- and screw-locking . 38
128 Figure 32 – Engagement (mating) information . 40
Figure 33 – Gauge information . 41
130 Figure 34 – Contact resistance arrangement . 49
Figure 35 – Dynamic stress test arrangement . 50
Table 1 – Ratings of connectors . 12
134 Table 2 – Styles of fixed connectors . 14
Table 3 – Dimensions of style BM, Figure 1 . 15
136 Table 4 – Dimensions of style CM, Figure 2 . 15
Table 5 – Dimensions of style EM, Figure 3 . 16
138 Table 6 – Dimensions of style EF, Figure 4 . 17
Table 7 – Dimensions of style EF, Figure 5 . 18
140 Table 8 – Styles of free connectors . 19
Table 9 – Dimensions of style JM, Figure 6 . 19

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142 Table 10 – Dimensions of style KM, Figure 7 . 20
143 Table 11 – Dimensions of style NM, Figure 8 . 21
144 Table 12 – Dimensions of style NM, Figure 9 . 21
145 Table 13 – Dimensions of style PM, Figure 10 . 22
146 Table 14 – Dimensions of style LM, Figure 11 . 22
147 Table 15 – Dimensions of style MM, Figure 12 . 23
148 Table 16 – Dimensions of style JF, Figure 13. 24
149 Table 17 – Dimensions of style KF, Figure 14 . 24
150 Table 18 – Dimensions of style NF, Figure 15 . 25
151 Table 19 – Dimensions of style QF, Figure 16 . 26
152 Table 20 – Dimensions of style LF, Figure 17 . 27
153 Table 21 – Dimensions of style MF, Figure 18 . 27
154 Table 22 – Dimensions for Figure 19 . 28
155 Table 23 – Dimensions for Figure 21 . 29
156 Table 24 – Dimensions for Figure 23 . 31
157 Table 25 – Dimensions for Figure 25 . 33
158 Table 26 – Dimensions for Figure 27 . 35
159 Table 27 – Dimensions for Figure 29 . 36
160 Table 28 – Dimensions for Figure 31 . 39
161 Table 29 – Connectors dimensions in mated and locked position . 40
162 Table 30 – Gauges . 42
163 Table 31 – Climatic category . 43
164 Table 32 – Rated insulation voltage – Rated impulse voltage – Pollution degree . 44
165 Table 33 – Voltage proof . 44
166 Table 34 – Current-carrying capacity . 45
167 Table 35 – Number of mechanical operations . 46
168 Table 36 – Insertion and withdrawal forces . 46
169 Table 37 – Number of test specimens . 51
170 Table 38 – Test group P . 52
171 Table 39 – Test group AP . 53
172 Table 40 – Test group BP . 56
173 Table 41 – Test group CP . 58
174 Table 42 – Test group DP . 59
175 Table 43 – Test group EP . 59
176 Table 44 – Test group NP . 60
oSIST prEN IEC 61076-2-104:2024
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179 INTERNATIONAL ELECTROTECHNICAL COMMISSION
180 ____________
182 CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
183 PRODUCT REQUIREMENTS –
185 Part 2-104: Circular connectors – Detail specification for circular
186 connectors with M8 screw-locking or snap-locking
189 FOREWORD
190 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
191 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
192 international co-operation on all questions concerning standardization in the electrical and electronic fields. To
193 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
194 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
195 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
196 in the subject dealt with may participate in this preparatory work. International, governmental and non-
197 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
198 with the International Organization for Standardization (ISO) in accordance with conditions determined by
199 agreement between the two organizations.
200 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
201 consensus of opinion on the relevant subjects since each technical committee has representation from all
202 interested IEC National Committees.
203 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
204 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
205 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
206 misinterpretation by any end user.
207 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
208 transparently to the maximum extent possible in their national and regional publications. Any divergence
209 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
210 the latter.
211 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
212 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
213 services carried out by independent certification bodies.
214 6) All users should ensure that they have the latest edition of this publication.
215 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
216 members of its technical committees and IEC National Committees for any personal injury, property damage or
217 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
218 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
219 Publications.
220 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
221 indispensable for the correct application of this publication.
222 9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
223 patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
224 respect thereof. As of the date of publication of this document, IEC [had/had not] received notice of (a)
225 patent(s), which may be required to implement this document. However, implementers are cautioned that this
226 may not represent the latest information, which may be obtained from the patent database available at
227 https://patents.iec.ch. IEC shall not be held responsible for identifying any or all such patent rights.
229 International Standard IEC 61076-2-104 has been prepared by subcommittee 48B: Electrical
230 connectors, of IEC technical committee 48: Electrical connectors and mechanical structures
231 for electrical and electronic equipment.
232 This third edition cancels and replaces the second edition of IEC 61076-2-104 (2014). This
233 edition constitutes a technical revision.
234 This edition includes the following significant technical changes with respect to the previous
235 edition:
oSIST prEN IEC 61076-2-104:2024
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236 a) The structure of this international standard has been adapted to the new IEC
237 template for standards. New subchapters have been added. Clauses 5 Dimensional
238 information and 6 Characteristics technical specifications have been updated.
239 b) The mating face for a M8 12-pole connector has been added.
240 c) Annex B Orientation of cable outlet in relation to coding has been added.
241 The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
243 Full information on the voting for its approval can be found in the report on voting indicated in
244 the above table.
245 The language used for the development of this International Standard is English.
246 A list of all parts of the IEC 61076 series, published under the general title Connectors for
247 electrical and electronic equipment – Product requirements, can be found on the IEC website.
248 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
249 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
250 available at www.iec.ch/members_experts/refdocs. The main document types developed by
251 IEC are described in greater detail at www.iec.ch/standardsdev/publications.
252 The committee has decided that the contents of this document will remain unchanged until the
253 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
254 specific document. At this date, the document will be
255 • reconfirmed,
256 • withdrawn,
257 • replaced by a revised edition, or
258 • amended.
oSIST prEN IEC 61076-2-104:2024
IEC CDV 61076-2-104/Ed3 © IEC 2024 – 8 – 48B/3121/CDV
IEC SC 48B – Electrical connectors IEC 61076-2-104 Ed 3

Specification available from:
IEC General secretariat or from the addresses shown on the inside
cover.
Electronic components of assessed quality in accordance with:

IEC 61076-1
Circular connectors M8 -
diameter 8 mm
3 to 12 way
Male and female contacts
Male and female connectors
Rewirable – Non-rewirable
Free cable connectors
Straight and right angled
connectors
Fixed connectors
Flange mounting
Single hole mounting
Connector insert
Snap- and screw-locking
oSIST prEN IEC 61076-2-104:2024
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264 1 Scope
265 This part of IEC 61076 describes circular connectors M8 screw-locking or with nominal 8 mm
266 snap-locking, for connection of automation devices with signal and power up to 50 V AC / 60
267 V DC rated voltage and up to 4 A rated current.
268 These connectors consist of fixed and free connectors either rewirable or non-rewirable. Male
269 connectors have round contacts ∅ 0,48 mm, ∅ 0,6 mm, ∅ 0,7 mm and ∅ 1,0 mm according to
270 the number of ways and coding, all contacts with the same size.
271 The different codings prevent the mating of differently coded male and female connectors.
272 NOTE 1 M8 is the dimension of the thread of the screw locking mechanism of these circular connectors.
273 NOTE 2 These connectors are typically used for connecting industrial automation devices for process
274 measurement and control.
275 2 Normative references
276 The following referenced documents are indispensable for the application of this document.
277 For dated references, only the edition cited applies. For undated references, the latest edition
278 of the referenced document (including any amendments) applies.
279 IEC 60050-581, Advance edition of the International Electrotechnical Vocabulary – Chapter
280 581: Electromechanical components for electronic equipment
281 IEC 60068-1, Environmental testing – Part 1: General and guidance
282 IEC 60068-2-60, Environmental testing – Part 2: Tests –Test Ke: Flowing mixed gas corrosion
283 test
284 IEC 60352 (all parts), Solderless connections
285 IEC 60512-1, Connectors for electronic equipment – Tests and measurements – Part 1:
286 General
287 IEC 60512-1-1, Connectors for electronic equipment – Tests and measurements – Part 1-1:
288 General examination – Test 1a: Visual examination
289 IEC 60512-1-2, Connectors for electronic equipment – Tests and measurements – Part 1-2:
290 General examination – Test 1b: Examination of dimension and mass
291 IEC 60512-2-1, Connectors for electronic equipment – Tests and measurements – Part 2-1:
292 Electrical continuity and contact resistance tests – Test 2a: Contact resistance – Millivolt level
293 method
294 IEC 60512-2-2 Connectors for electronic equipment – Tests and measurements – Part 2-2:
295 Electrical continuity and contact resistance tests – Test 2b: Contact resistance – Specified
296 test current method
297 IEC 60512-2-5 Connectors for electronic equipment – Tests and measurements – Part 2-5:
298 Electrical continuity and contact resistance tests – Test 2e: Contact disturbance
299 IEC 60512-3-1, Connectors for electronic equipment – Tests and measurements – Part 3-1:
300 Insulation tests – Test 3a: Insulation resistance

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301 IEC 60512-4-1, Connectors for electronic equipment – Tests and measurements – Part 4-1:
302 Voltage stress tests – Test 4a: Voltage proof
303 IEC 60512-5-2, Connectors for electronic equipment – Tests and measurements – Part 5-2:
304 Current-carrying capacity tests – Test 5b: Current-temperature derating
305 IEC 60512-6-3, Connectors for electronic equipment – Tests and measurements – Part 6-3:
306 Dynamic stress tests – Test 6c: Shock
307 IEC 60512-6-4, Connectors for electronic equipment – Tests and measurements – Part 6-4:
308 Dynamic stress tests – Test 6d: Vibration (sinusoidal)
309 IEC 60512-9-1, Connectors for electronic equipment – Tests and measurements – Part 9-1:
310 Endurance tests – Test 9a: Mechanical operation
311 IEC 60512-9-2, Connectors for electronic equipment – Tests and measurements – Part 9-2:
312 Endurance tests – Test 9b: Electrical load and temperature
313 IEC 60512-11-1, Electromechanical components for electronic equipment – Basic testing 339
314 procedures and measuring methods – Part 11: Climatic tests – Section 1: Test 11a – Climatic
315 sequence
316 IEC 60512-11-4, Connectors for electronic equipment – Tests and measurements – Part 11-4:
317 Climatic tests – Test 11d: Rapid change of temperature
318 IEC 60512-11-7, Connectors for electronic equipment – Tests and measurements – Part 11-7:
319 Climatic tests – Test 11g: Flowing mixed gas corrosion test
320 IEC 60512-11-9, Connectors for electronic equipment – Tests and measurements – Part 11-9:
321 Climatic tests – Test 11i: Dry heat
322 IEC 60512-11-10, Connectors for electronic equipment – Tests and measurements – Part 11-
323 10: Climatic tests – Test 11j: Cold
324 IEC 60512-11-12, Connectors for electronic equipment – Tests and measurements – Part 11-
325 12: Climatic tests – Test 11m: Damp heat, cyclic
326 IEC 60512-13-2, Connectors for electronic equipment – Tests and measurements – Part 13-2:
327 Mechanical operation tests – Test 13b: Insertion and withdrawal forces
328 IEC 60512-13-5, Connectors for electronic equipment – Tests and measurements – Part 13-5:
329 Mechanical operation tests – Test 13e: Polarizing and keying method
330 IEC 60512-14-7 Electromechanical components for electronic equipment – Basic testing
331 procedures and measuring methods – Part 14: Sealing tests – Section 7: Test 14g: Impacting
332 water
333 IEC 60512-15-1 Connectors for electronic equipment – Tests and measurements – Part 15-1:
334 – Test 15a: Contact retention in insert
Connector tests (mechanical)
335 IEC 60512-16-5, Connectors for electronic equipment – Tests and measurements – Part 16-5:
336 Mechanical tests on contacts and terminations – Test 16e: Gauge retention force (resilient
337 contacts)
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338 IEC 60512-19-3, Electromechanical components for electronic equipment – Basic testing
339 procedures and measuring methods – Part 19: Chemical resistance tests – Section 3: Test
340 19c – Fluid resistance
341 IEC 60512-23-3 Connectors for electrical and electronic equipment – Tests and
342 measurements – Part 23-3: Screening and filtering tests – Test 23c: Shielding effectiveness of
343 connectors and accessories – Line injection method
344 IEC 60529, Degrees of protection provided by enclosures (IP code)
345 IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
346 Principles, requirements and tests
347 IEC 60998-2-1, Connecting devices for low-voltage circuits for household and similar
348 purposes – Part 2-1: Particular requirements for connecting devices as separate entities with
349 screw-type clamping units
350 IEC 60999-1, Connecting devices – Electrical copper conductors – Safety requirements for
351 screw-type and screwless-type clamping units – Part 1: General Requirements and particular
352 requirements for clamping units for conductors from 0,2mm² up to 35mm² (included)
353 IEC 61076-1, Connectors for electronic equipment – Product requirements – Part 1: Generic
354 specification
355 IEC 61076-2, Connectors for electronic equipment – Product requirements – Part 2: Sectional
356 specification for circular connectors
357 IEC 61984, Connectors – Safety requirements and tests
358 ISO 11469:2016, Plastics – Generic identification and marking of plastic products
359 ISO 21920-1 (2021), Geometrical Product Specifications (GPS) – Surface texture: Profile –
360 Part 1: Indication of surface texture
361 3 Terms and definitions
362 For the purposes of this document, terms and definitions from IEC 60050-581, IEC 61076-1,
363 IEC 60512-1 as well as the following apply.
364 ISO and IEC maintain terminological databases for use in standardization at the following
365 addresses:
366 • ISO Online browsing platform: available at https://www.iso.org/obp
367 • IEC Electropedia: available at http://www.electropedia.org/
368 3.1
369 mounting orientation
371 circular mounting position of the connector in relation to the polarization of the mating
372 interface.
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373 4 Technical information
374 4.1 Recommended method of termination for rewirable connectors
375 The contact termination for rewirable connectors shall be of the following types: screw, crimp,
376 spring clamp, insulation piercing, insulation displacement, press-in connections according to
377 the respective part of IEC 60352 series and IEC 60999-1, as applicable, or solder.
378 4.2 Connector coding, number of contacts, ratings and characteristics
379 Table 1 provides the codings of these connectors as a function of their style, number of
380 contacts, rated voltage and rated current.
381 Table 1 – Ratings of connectors
Rated voltage Rated current
Coding Style Number of contacts
AC or DC A
3-way 3 50 V AC / 60 V DC 4
4-way 4 50 V AC / 60 V DC 4
A
6-way 6 32 V 1,5
8-way 8 32 V 1,5
B 5-way 5 32 V 3
C 12-way 12 32 V 1
NOTE The rated current refers to the interface.
383 Insulation resistance: 10 Ω min.
384 Contact spacing:  see interface dimensions subclause 5.4
385 4.3 Systems of levels
386 4.3.1 Performance level
387 Connectors according to this standard are classified by mating performance level (MPL). See
388 6.5.1 for details.
389 4.3.2 Compatibility levels, according to IEC 61076-1
390 Connectors according to this standard are intermateable and interoperable according to IEC
391 61076-1 (level 3).
392 Interoperability is granted, provided that the same performance level as defined in 4.3.1 and
393 the same surface of contacts as defined in 6.2 is considered.
394 4.4 Classification into climatic categories
395 See 6.3 in this standard.
396 4.5 Creepage and clearance distances
397 The creepage and clearance distances shall be dimensioned according to rated insulation
398 voltage values specified in Table 32 (see 6.4.1), in accordance with IEC 60664-1 and shall be
399 measured only in mated position (see 4.8, COC unless otherwise specified by the
400 manufacturer) according to IEC 60512-1-2.

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IEC CDV 61076-2-104/Ed3 © IEC 2024 – 13 – 48B/3121/CDV
401 NOTE Creepage distances can be dimensioned for pollution degree 2 for connectors IP54 or higher, see IEC
402 61984 (2008), subclause 6.19.3.
403 The creepage and clearance distances that cover performance requirements in IEC 60664-1
404 may be reduced, based on IEC TR 63040.
405 NOTE As indicated in IEC 60664-1, IEC TR 63040 provides an alternative and more precise dimensioning
406 procedure for clearances equal to or less than 2mm.
407 In practice, reductions in creepage or clearance distances may occur due to the conductive
408 pattern of the printed board, or the wiring used and should in such case duly be taken into
409 account.
410 NOTE The permissible rated voltage depends on the application and the relevant specified safety requirements.
411 4.6 Current-carrying capacity
412 See 6.4.3 in this standard.
413 4.7 Marking
414 The marking of the connector and the package shall be in accordance with 2.7 of
415 IEC 61076-1.
416 4.8 Safety aspects
417 For safety aspects IEC 61984 shall be considered unless otherwise specified.
418 Connectors according to this standard are COC (connectors without breaking capacity) per
419 IEC 61984, unless otherwise specified by the manufacturer.
423 This section intentionally left blank
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IEC CDV 61076-2-104/Ed3 © IEC 2024 – 14 – 48B/3121/CDV
425 5 Dimensional information
426 5.1 General
427 Throughout this standard, dimensions are in mm. Drawings are shown in the first angle
428 projection. The shape of the connectors may deviate from those given in the following
429 drawings as long as the specified dimensions are not influenced.
430 Missing dimensions shall be chosen according to common characteristics and intended use.
431 For all connector styles with cables, the length L of the cable shall be agreed between
432 manufacturer and user.
433 Alternative installation situations are possible and shall be specified upon between
434 manufacturer and user. Requirements defined in this document must be adhered to.
435 For interface dimensions see 5.4.
436 The interface dimensions of the female styles shall be chosen according to the common
437 characteristics of the male styles.
438 For reliable intermateability, the dimensions of the female connector body as detailed in
439 Annex A should be met.
440 For free connectors with right angled cable outlets, the direction of the coding in relation to
441 the cable outlet shall be specified to assure that the cable leaves the housing in the specified
442 direction. This is indicated by an arrow and des
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