IEC 61076-8-112:2025

Connectors for electrical and electronic equipment – Product requirements - Part 8-112: Power connectors – Detail specification for 2-pole snap locking rectangular connectors with IP65/IP67 plastic housing for rated current of 50 A

IEC 61076-8-112:2025 describes 2-pole snap locking rectangular power connectors with IP65/IP67 plastic housing, for rated current of 50 A. It includes overall dimensions, interface dimensions, technical characteristics, performance requirements, test methods.
The products covered by this detail specification are connectors with breaking capacity (CBC) according to IEC 61984 which are mainly used in DC power conduction, in the field of electrical and electronic equipment.

General Information

• Status: Published
• Publication Date: 05-Feb-2025
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• Technical Committee: SC 48B - Electrical connectors
• Current Stage: PPUB - Publication issued
• Start Date: 06-Dec-2024
• Due Date: 06-Feb-2025
• Completion Date: 06-Feb-2025

Standards Content (Sample)

IEC 61076-8-112 ®
Edition 1.0 2025-02
INTERNATIONAL
STANDARD
Connectors for electrical and electronic equipment – Product requirements
Part 8-112: Power connectors – Detail specification for 2-pole snap locking
rectangular connectors with IP65/IP67 plastic housing for rated current of 50 A

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IEC 61076-8-112 ®
Edition 1.0 2025-02
INTERNATIONAL
STANDARD
Connectors for electrical and electronic equipment – Product requirements

Part 8-112: Power connectors – Detail specification for 2-pole snap locking

rectangular connectors with IP65/IP67 plastic housing for rated current of 50 A

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.220.10  ISBN 978-2-8327-0004-4

– 2 – IEC 61076-8-112:2025 © 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 . 11
4.3 Systems of levels . 11
4.3.1 Performance levels . 11
4.3.2 Compatibility levels . 11
4.4 Classification into climatic categories . 11
4.5 Clearance and creepage distance . 11
4.6 Current-carrying capacity . 11
4.7 Marking . 12
4.8 Safety aspects . 12
5 Dimensional information . 12
5.1 General . 12
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) . 13
5.3 Engagement (mating) information . 13
5.4 Fixed connectors . 13
5.4.1 Dimensions (Figure 3 and Table 2) . 13
5.4.2 Terminations. 14
5.5 Free connectors . 15
5.5.1 Dimensions (Figure 4 and Table 3) . 15
5.5.2 Terminations. 16
5.6 Accessories . 16
5.7 Mounting information . 16
5.8 Gauges . 16
5.8.1 Sizing gauges and retention force gauges (Figure 5 and Table 4) . 16
6 Technical characteristics . 17
6.1 Classification into climatic categories . 17
6.2 Electrical characteristics . 17
6.2.1 Clearance and creepage distance . 17
6.2.2 Voltage proof . 17
6.2.3 Contact resistance . 17
6.2.4 Insulation resistance . 17
6.2.5 Temperature rise . 18
6.2.6 Electrical load and temperature . 18
6.3 Mechanical characteristics . 18
6.3.1 Mechanical strength impact . 18
6.3.2 Mechanical operation . 18
6.3.3 Breaking capacity (engaging/separating with electrical load) . 19

6.3.4 Effectiveness of connector coupling devices . 19
6.3.5 Engaging and separating force . 19
6.3.6 Contact retention in insert . 19
6.3.7 Gauge retention force (resilient contact) . 20
6.3.8 Conductor secureness . 20
6.4 Dynamic stress test . 20
6.4.1 Vibration (sine) . 20
6.4.2 Shock . 20
6.4.3 IP degree of protection . 21
6.5 Climatic test . 21
6.5.1 Damp heat, steady state . 21
6.5.2 Rapid change of temperature . 21
6.5.3 Corrosion, salt mist . 21
6.5.4 Dry heat . 21
6.5.5 Cold . 21
6.6 Environmental aspects . 22
6.6.1 Marking of insulation material (plastic) . 22
6.6.2 Design and use of material . 22
7 Tests and test schedules . 22
7.1 General . 22
7.2 Test schedules. 22
7.2.1 Basic (minimum) test schedule . 22
7.2.2 Full test schedule . 22
7.3 Test procedures and measurement methods . 30
7.4 Pre-conditioning . 30
7.5 Wiring and mounting of test specimens . 30
7.5.1 Wiring . 30
7.5.2 Mounting . 30

Figure 1 – Free female connector . 12
Figure 2 – Fixed male connector . 13
Figure 3 – Fixed male connector . 13
Figure 4 – Free female connector . 15
Figure 5 – Gauge for contacts . 16

Table 1 – Climatic category . 11
Table 2 – Fixed connector dimensions . 14
Table 3 – Free connector dimensions . 15
Table 4 – Gauge dimensions . 16
Table 5 – Conductor secureness test . 20
Table 6 – Vibration . 20
Table 7 – Number of test specimens . 22
Table 8 – Test group P . 23
Table 9 – Test group AP . 23
Table 10 – Test group BP . 25
Table 11 – Test group CP . 26

– 4 – IEC 61076-8-112:2025 © IEC 2025
Table 12 – Test group DP . 27
Table 13 – Test group EP . 28
Table
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