IEC 61076-8-111:2025

IEC 61076-8-111 ®
Edition 1.0 2025-02
INTERNATIONAL
STANDARD
Connectors for electrical and electronic equipment – Product requirements –
Part 8-111: Power connectors – Detail specification for 3-pole snap locking
rectangular connectors with IP65/IP67 plastic housing for rated current of 20 A

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IEC 61076-8-111 ®
Edition 1.0 2025-02
INTERNATIONAL
STANDARD
Connectors for electrical and electronic equipment – Product requirements –

Part 8-111: Power connectors – Detail specification for 3-pole snap locking

rectangular connectors with IP65/IP67 plastic housing for rated current of 20 A

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.220.10  ISBN 978-2-8327-0005-1

– 2 – IEC 61076-8-111:2025 © IEC 2025
CONTENTS
FOREWORD . 5
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 10
4 Technical information . 10
4.1 Recommended method of termination . 10
4.1.1 General . 10
4.1.2 Number of contacts and contact cavities . 10
4.2 Ratings and characteristics . 10
4.3 Systems of levels . 10
4.3.1 Performance levels . 10
4.3.2 Compatibility levels . 10
4.4 Classification into climatic categories . 11
4.5 Clearance and creepage distance . 11
4.6 Current-carrying capacity . 11
4.7 Marking . 11
4.8 Safety aspects . 11
5 Dimensional information . 11
5.1 General . 11
5.2 Isometric view and common features . 12
5.2.1 Isometric view of free connector (Figure 1) . 12
5.2.2 Isometric view of fixed connector (Figure 2) . 12
5.3 Engagement (mating) information . 12
5.4 Fixed connectors . 13
5.4.1 Dimensions (Figure 3 and Table 2) . 13
5.4.2 Terminations . 14
5.5 Free connectors . 14
5.5.1 Dimensions (Figure 4 and Table 3) . 14
5.5.2 Terminations . 15
5.6 Accessories . 15
5.7 Mounting information . 15
5.8 Gauges . 15
5.8.1 Sizing gauges and retention force gauges (Figure 5 and Table 4) . 15
6 Technical characteristics . 15
6.1 Classification into climatic categories . 15
6.2 Electrical characteristics . 15
6.2.1 Clearance and creepage distance . 15
6.2.2 Voltage proof . 16
6.2.3 Contact resistance . 16
6.2.4 Insulation resistance . 16
6.2.5 Temperature rise . 17
6.2.6 Electrical load and temperature . 17
6.3 Mechanical characteristics . 17
6.3.1 Mechanical strength impact . 17
6.3.2 Mechanical operation . 17
6.3.3 Breaking capacity (engaging and separating with electrical load) . 17

6.3.4 Effectiveness of connector coupling devices . 18
6.3.5 Engaging and separating force . 18
6.3.6 Contact retention in insert . 18
6.3.7 Gauge retention force (resilient contact) . 18
6.3.8 Conductor secureness . 19
6.4 Dynamic stress test. 19
6.4.1 Vibration (sine) . 19
6.4.2 Shock . 19
6.4.3 IP degree of protection . 19
6.5 Climatic test . 20
6.5.1 Damp heat, steady state . 20
6.5.2 Rapid change of temperature . 20
6.5.3 Corrosion, salt mist . 20
6.5.4 Dry heat . 20
6.5.5 Cold. 20
6.6 Environmental aspects . 20
6.6.1 Marking of insulation material (plastic) . 20
6.6.2 Design/use of material . 21
7 Tests and test schedules . 21
7.1 General . 21
7.2 Test schedules . 21
7.2.1 Basic (minimum) test schedule . 21
7.2.2 Full test schedule . 21
7.3 Test procedures and measurement methods . 30
7.4 Pre-conditioning . 31
7.5 Wiring and mounting of test specimens . 31
7.5.1 Wiring . 31
7.5.2 Mounting . 31

Figure 1 – Free female connector . 12
Figure 2 – Fixed male connector . 12
Figure 3 – Fixed male connector . 13
Figure 4 – Free female connector . 14
Figure 5 – Gauge for contacts . 15

Table 1 – Climatic category. 11
Table 2 – Fixed connector dimensions . 13
Table 3 – Free connector dimensions . 14
Table 4 – Gauge dimensions. 15
Table 5 – Conductor secureness test . 19
Table 6 – Vibration . 19
Table 7 – Number of test specimens . 21
Table 8 – Test group P . 22
Table 9 – Test group AP . 22
Table 10 – Test group BP . 24
Table 11 – Test group CP . 26

– 4 – IEC 61076-8-111:2025 © IEC 2025
Table 12 – Test group DP . 27
Table 13 – Test group EP . 28
Table 14 – Test group GP . 29
Table 15 – Test group JP . 29
Table 16 – Test group KP . 30

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 8-111: Power connectors –
Detail specification for 3-pole snap locking rectangular
connectors with IP65/IP67 plastic housing for rated current of 20 A

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
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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
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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
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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 61076-8-111 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.
The text of this International Standard is based on the following documents:
Draft Report on voting
48B/3114/FDIS 48B/3132/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
– 6 – IEC 61076-8-111:2025 © IEC 2025
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, 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.
The International Electrotechnical Commission
IEC 61076-8-111 Ed. 1
IEC SC 48B—Electrical connectors
Detail specification in accordance with IEC 61076-1
Free rectangular connector;
For rated current of 20 A;
Free
3-pole;
connector
Female contacts for power;
Straight insertion and withdrawal.

3-pole 20 A free connector
Fixed rectangular connector;
For rated current of 20 A;
Fixed
3-pole;
connector
Male contacts for power;
Straight insertion and withdrawal.

3-pole 20 A fixed connector
– 8 – IEC 61076-8-111:2025 © IEC 2025
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 8-111: Power connectors –
Detail specification for 3-pole snap locking rectangular
connectors with IP65/IP67 plastic housing for rated current of 20 A

1 Scope
This part of the IEC 61076 series describes 3-pole snap locking rectangular power connectors
with IP65/IP67 plastic housing, for rated current of 20 A. It includes overall dimensions,
interface dimensions, technical characteristics, performance requirements, and test methods.
The products covered by this detail specification are connectors with breaking capacity (CBC)
according to IEC 61984 which are mainly used in AC power conduction, in the field of electrical
and electronic equipment.
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 (IEV) – Part 581: Electromechanical
components for electronic equipment
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60228, Conductors of insulated cables
IEC 60352, Solderless connections (all parts)
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 60512-3-1, 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 60512-5-2, Connectors for electronic equipment – Tests and measurements – Part 5-2:
Current-carrying capacity tests – Test 5b: Current-temperature derating
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 60512-7-2, Connectors for electronic equipment – Tests and measurements – Part 7-2:
Impact tests (free components) – Test 7b: Mechanical strength impact
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 60512-11-3, 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 60512-11-6, Connectors for electronic equipment – Tests and measurements – Part 11-6:
Climatic tests – Test 11f: Corrosion, salt mist
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 60512-13-1, Connectors for electronic equipment – Tests and measurements – Part 13-1:
Mechanical operation tests –Test 13a: Engaging and separating forces
IEC 60512-15-1, Connectors for electronic equipment – Tests and measurements – Part 15-1:
Connector tests (mechanical) – Test 15a: Contact retention in insert
IEC 60512-15-6, Connectors for electronic equipment – Tests and measurements – Part 15-6:
Connector tests (mechanical) – Test 15f: Effectiveness of connector coupling devices
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 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60999-1:1999, 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 61984:2008, Connectors – Safety requirements and tests

– 10 – IEC 61076-8-111:2025 © IEC 2025
IEC 62430, Environmentally conscious design (ECD) – Principles, requirements and guidance
IEC GUIDE 109:2012, Environmental aspects – Inclusion in electrotechnical product standards
ISO 6508-1, Metallic materials – Rockwell hardness test – Part 1: Test method
ISO 21920-1, Geometrical product specifications (GPS) – Surface texture: Profile – Part 1:
Indication of surface texture
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 Technical information
4.1 Recommended method of termination
4.1.1 General
According to IEC 60999-1 or the IEC 60352 series.
4.1.2 Number of contacts and contact cavities
Number of contacts: 3 poles.
Rated connecting capacity: 4 mm .
4.2 Ratings and characteristics
Rated voltage: 250 V AC.
Rated impulse voltage: 4 kV.
Pollution degree: 2.
Rated current: 20 A.
Insulation resistance: 1 000 MΩ min.
4.3 Systems of levels
4.3.1 Performance levels
Performance level for this connector is 1.
4.3.2 Compatibility levels
Products specified by this document are supposed to be intermateable according to 2.2.3.3 of
IEC 61076-1:2006.
4.4 Classification into climatic categories
Conditions: according to IEC 60068-1 and Table 1.
Table 1 – Climatic category
Climatic category Lower temperature Upper temperature Damp heat, steady state
°C °C d
40/110/10 -40 +110 10
4.5 Clearance and creepage distance
Clearance and creepage distances shall be dimensioned in accordance with the assigned
ratings following the rules provided by IEC 60664-1, with the following additional requirements.
For these conn
...