IEC 61076-8-110:2026

IEC 61076-8-110 ®
Edition 1.0 2026-08
INTERNATIONAL
STANDARD
Connectors for electrical and electronic equipment - Product requirements-
Part 8-110: Power connectors - Detail specification for 2P 300 A 1 000 V plus 2P
5 A 50 V DC shielded rectangular connectors with IP65/IP68 degree of protection
when mated and locked, and IPXXB when unmated
ICS 31.220.10  ISBN 978-2-8327-1397-6

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CONTENTS
FOREWORD . 4
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 9
4 Technical information . 9
4.1 Recommended method of termination . 9
4.1.1 General . 9
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 . 10
4.5 Clearance and creepage distance . 11
4.6 Current-carrying capacity . 11
4.7 Marking . 11
5 Dimensional information . 11
5.1 General . 11
5.2 Isometric view and common features . 11
5.2.1 Isometric view of fixed connector . 11
5.2.2 Isometric view of free connector . 12
5.3 Engagement (mating) information . 12
5.3.1 General . 12
5.3.2 Perpendicular to the engaging (mating) direction . 12
5.3.3 Inclination . 12
5.4 Fixed connectors . 12
5.4.1 General . 12
5.4.2 Dimensions . 13
5.4.3 Terminations. 15
5.5 Free connectors . 15
5.5.1 General . 15
5.5.2 Dimensions . 16
5.5.3 Terminations. 18
5.6 Accessories . 18
5.7 Mounting information . 18
5.8 Gauges – sizing gauges and retention force gauges . 18
6 Technical characteristics . 19
6.1 Classification into climatic categories . 19
6.2 Electrical characteristics . 20
6.2.1 Clearance and creepage distance . 20
6.2.2 Voltage proof . 20
6.2.3 Contact resistance . 20
6.2.4 Housing (shell) electrical continuity and shielding effectiveness. 20
6.2.5 Insulation resistance . 21
6.2.6 Current-carrying capacity . 21
6.2.7 Electrical load and temperature . 21
6.3 Mechanical characteristics . 22
6.3.1 Mechanical operation . 22
6.3.2 Effectiveness of connector coupling devices . 22
6.3.3 Gauge retention force (resilient contact) . 22
6.3.4 Engaging and separating forces. 22
6.3.5 Contact retention in insert . 22
6.3.6 Polarizing and keying method . 23
6.4 Dynamic stress tests . 23
6.4.1 Vibration (sine) . 23
6.4.2 Shock . 23
6.4.3 Free fall (repeated) . 23
6.4.4 IP degree of protection . 24
6.4.5 Glow-wire flammability test method for end-products (GWEPT) . 24
6.5 Climatic tests . 24
6.5.1 Damp heat, steady state . 24
6.5.2 Rapid change of temperature . 24
6.5.3 Corrosion, salt mist . 24
6.5.4 Dry heat . 25
6.5.5 Cold . 25
6.5.6 Low air pressure . 25
6.6 Environmental aspects . 25
6.6.1 Marking of insulation material (plastic) . 25
6.6.2 Design and use of material . 25
7 Test schedules . 25
7.1 General . 25
7.2 Basic (minimum) test schedule . 26
7.3 Full test schedule . 26
7.3.1 Test group P – Preliminary . 26
7.3.2 Test group AP – Dynamic climatic . 27
7.3.3 Test group BP – Mechanical endurance . 29
7.3.4 Test group CP – Moisture . 30
7.3.5 Test group DP – Heat and electrical load . 31
7.3.6 Test group EP – Dynamic stress . 32
7.3.7 Test group FP – Chemical resistivity . 33
7.3.8 Test group GP – Manufacturing process robustness . 33
7.3.9 Test group HP – Signal integrity and shielding effectiveness tests . 34
7.3.10 Test group JP – Connection . 34
7.3.11 Test group KP – Additional test . 35
7.4 Test procedures and measurement methods . 36
7.5 Pre-conditioning . 36
7.6 Wiring and mounting of test specimens . 36
7.6.1 Wiring . 36
7.6.2 Mounting . 36
Bibliography . 37

Figure 1 – Fixed connector – isometric view . 11
Figure 2 – Free connector – isometric view . 12
Figure 3 – Fixed connector . 13
Figure 4 – Fixed connector codings . 15
Figure 5 – Free connector . 16
Figure 6 – Free connector codings . 17
Figure 7 – Gauge for signal contacts . 19
Figure 8 – Gauge for power contacts . 19
Figure 9 – Current-temperature derating (70 mm wire size) . 21

Table 1 – Climatic category . 10
Table 2 – Dimensions of fixed connector . 14
Table 3 – Dimensions of fixed connector codings . 15
Table 4 – Dimensions of free connector . 17
Table 5 – Dimensions of free connector codings . 18
Table 6 – Dimensions of gauges . 19
Table 7 – Voltage proof. 20
Table 8 – Vibration . 23
Table 9 – Number of test specimens . 26
Table 10 – Test group P . 26
Table 11 – Test group AP . 27
Table 12 – Test group BP . 29
Table 13 – Test group CP . 30
Table 14 – Test group DP . 31
Table 15 – Test group EP . 32
Table 16 – Test group GP . 33
Table 17 – Test group HP . 34
Table 18 – Test group JP . 34
Table 19 – Test group KP . 35

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Connectors for electrical and electronic equipment -
Product requirements -
Part 8-110: Power connectors - Detail specification for 2P 300 A 1 000 V
DC plus 2P 5 A 50 V DC shielded rectangular connectors with IP65/IP68
degree of protection when mated and locked, and IPXXB when unmated

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,
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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
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6) All users should ensure that they have the latest edition of this publication.
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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
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shall not be held responsible for identifying any or all such patent rights.
IEC 61076-8-110 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/3215/FDIS 48B/3221/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.
The International Electrotechnical Commission
IEC 61076-8-110 Ed.1
IEC SC 48B – Electrical connectors
Detail specification in accordance with IEC 61076-1
For rated current of 300 A, 1 000 V DC;
2P power plus 2P signal (5 A, 50 V DC);
Female contacts for power;
Fixed
Female contacts for signal;
connector
Straight insertion and withdrawal;
360° shielding;
Four codings to prevent mismating.

For rated current of 300 A, 1 000 V DC;
2P power plus 2P signal (5 A, 50 V DC);
Male contacts for power;
Free First break last make male contacts for
connector signal;
Straight insertion and withdrawal;
360° shielding;
Four codings to prevent mismating.

1 Scope
This part of IEC 61076-8 describes free and fixed rectangular connectors, hereinafter referred
to as "connector", with:
– 2P power plus 2P signal contacts;
– plastic housing with locking lever and four possible codings;
– 300 A rated current, 1 000 V DC rated voltage on the power section;
– 5 A rated current, 50 V DC rated voltage on the “first break, last make” signal section;
– individual shielding around each power contact with relevant shielding termination;
– IP65/IP68 degree of protection when mated and locked and IPXXB on both plug and
receptacle parts when unmated,
for use in electrical and electronic equipment, including overall dimensions, interface
dimensions, technical characteristics, performance requirements and test methods.
Connectors in accordance with this document are intended for use in class II equipment; hence,
they are not equipped with PE contact.
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 (all parts), Solderless connections
IEC 60512-1, Connectors for electrical and electronic equipment - Tests and measurements -
Part 1: Generic specification
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 - Test and measurements - Part 1-2:
General examination - Test 1b: Examination of dimension and mass
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 60512-2-6, Connectors for electronic equipment - Tests and measurements - Part 2-6:
Electrical continuity and contact resistance tests - Test 2f: Housing (shell) electrical continuity
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 60512-5-2, 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 60512-7-1, Connectors for electronic equipment - Tests and measurements - Part 7-1:
Impact tests (free connectors) - Test 7a: Free fall (repeated)
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 11-1: Climatic tests - 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 60512-11-6, 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 60512-11-11, Connectors for electronic equipment - Tests and measurements - Part 11-11:
Climatic tests - Test 11k: Low air pressure
IEC 60512-11-12, Connectors for electronic equipment - Tests and measurements - Part 11-12:
Climatic tests - Test 12m: Damp heat, cyclic
IEC 60512-13-1, Connectors for electronic equipment - Tests and measurements - Part 13-1:
Mechanical operation tests - Test 13a: Engaging and separating forces
IEC 60512-13-5, Connectors for electronic equipment - Tests and measurements - Part 13-5:
Mechanical operation tests - Test 13e: Polarizing and keying method
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 60695-2-11:2021, Fire hazard testing - Part 2-11: Glowing/hot-wire based test methods -
Glow-wire flammability test method for end-products (GWEPT)
IEC 60999 (all parts), Connecting devices - Electrical copper conductors - Safety requirements
for screw-type and screwless-type clamping units
IEC 61076-1, Connectors for electronic equipment - Product requirements - Part 1: Generic
specification
IEC 61984:2008, Connectors - Safety requirements and tests
IEC 62153-4-6, Metallic cables and other passive components test methods - Part 4-6:
Electromagnetic compatibility (EMC) Surface transfer impedance - injection method
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,
IEC 61076-1, IEC 60512-1 and IEC 61984 apply.
ISO and IEC maintain terminological 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
It is recommended that termination be in accordance with the IEC 60352 series, IEC 60999-1
or IEC 60999-2.
4.1.2 Number of contacts and contact cavities
Number of contacts: power contacts: 2, shielding contacts: 2 (surrounding each power contact),
signal contacts: 2.
Number of contact cavities (for removable contacts): 4.
Suitable wire: cross-sectional area for power contacts: 70 mm , cross-sectional area for signal
contacts: 0,5 mm . The core of each power wire is deemed to be individually shielded, each
shielding requiring a dedicated termination.
4.2 Ratings and characteristics
Connectors in accordance with this document are without breaking capacity (COC) as defined
in IEC 61984; therefore, they are not intended to be engaged or disengaged in normal use when
live or under load.
Rated voltage: power contacts: 1 000 V DC, signal contacts: 50 V DC.
Voltage proof of power contacts: 3 310 V AC, voltage proof of signal contacts: 500 V AC.
Pollution degree: 2.
NOTE The complete voltage rating is therefore 1 000 V DC 6 kV 2 (power section) and 50V DC 0,8kV 2 (signal
section).
Rated current (at 75 °C): power contacts: 300 A, signal contacts: 5 A. See Figure 9.
Insulation resistance: 5 000 MΩ min.
Climatic category: 40/125/10.
4.3 Systems of levels
4.3.1 Performance levels
The performance level for these connectors is 1.
4.3.2 Compatibility levels
The compatibility level of the products specified by this document shall comply with level 2 –
intermateable as described in IEC 61076-1.
4.4 Classification into climatic categories
Conditions: in accordance with IEC 60068-1 and Table 1.
Table 1 – Climatic category
Climatic category Lower temperature Upper temperature Damp heat, steady state
°C °C d
40/125/10 -40 +125 10
4.5 Clearance and creepage distance
Clearance and creepage distances shall be measured in accordance with IEC 60512-1-2 with
the following additional requirements.
For these connectors clearance and creepage distances shall be measured only in mated
condition (connector without breaking capacity as defined in IEC 61984).
Power contacts: clearance 5,5 mm min., creepage distance 10 mm min.
Signal contacts: clearance 0,8 mm min., creepage distance 1,2 mm min.
Between any power contact and the most adjacent signal contact: clearance 5,5 mm min.,
creepage distance 10 mm min.
4.6 Current-carrying capacity
The current-carrying capacity shall be measured in accordance with IEC 60512-5-2, Test 5b
and 6.2.6.
4.7 Marking
The marking of the connector and the package shall be in accordance with IEC 61076-1.
5 Dimensional information
5.1 General
Dimensions are given in millimetres. Drawings are shown in the first angle projection. The shape
of the connectors may deviate from those given in the following drawings if the specified
dimensions are not influenced.
For safety aspects, IEC 61984 shall be applied.
Missing dimensions shall be chosen according to the common characteristics and intended use.
5.2 Isometric view and common features
5.2.1 Isometric view of fixed connector
Figure 1 shows the isometric view of the fixed connector.

Figure 1 – Fixed connector – isometric view
5.2.2 Isometric view of free connector
Figure 2 shows the isometric view of the free connector.

Figure 2 – Free connector – isometric view
5.3 Engagement (mating) information
5.3.1 General
5.3.1.1 Engaging (mating) direction
Not applicable.
5.3.1.2 Contact levels and sequencing
Power contacts shall be engaged prior to signal contacts in the mating process of connectors.
Power contacts shall be withdrawn after signal contacts in the unmating process of connectors.
In other words, signal contacts shall be of the FBLM (first break last make) type.
Shielding contacts surrounding each power contact shall make after power contacts and before
signal contacts.
5.3.2 Perpendicular to the engaging (mating) direction
Not applicable.
5.3.3 Inclination
Not applicable.
5.4 Fixed connectors
5.4.1 General
Figure 3 shows a fixed connector and Table 2 shows the related dimensions.
5.4.2 Dimensions
Figure 3 – Fixed connector
Table 2 – Dimensions of fixed connector
Dimensions in mm
Letter Minimum Nominal Maximum
B 5,00 5,00 5,10
C 13,85 13,90 13,95
D 29,90 29,90 30,05
E 1,80 1,80 1,90
F 3,20 3,20 3,30
G 12,80 12,80 12,95
H 13,40 13,40 13,55
I Ø5,30 Ø5,40 Ø5,40
J Ø6,70 Ø6,80 Ø6,80
K 18,40 18,40 18,55
L 21,65 21,70 21,75
M 22,60 22,70 22,80
N 30,30 30,40 30,50
AA 3,00 3,00 3,10
AB 29,15 29,20 29,25
AC 52,70 52,70 52,85
AD 57,15 57,30 57,30
AE 60,40 60,50 60,50
AF R5,60 R5,70 R5,70
AG 41,40 41,40 41,55
AH 45,80 46,00 46,00
AI 1,30 1,30 1,40
AJ 15,35 15,40 15,45
AK 0,70 0,70 0,80
AL 4,10 4,20 4,20
AM R0,90 R1,00 R1,00
AN 6,90 7,00 7,00
Figure 4 – Fixed connector codings
The fixed connector housing shall be coded with one of four combinations of coding keys in its
contour, as shown in Figure 4, using four integral coding keys on the short sides of the housing
that, in combination with the corresponding four keyways in the contour of the mating free
connector hood (see Figure 6 in 5.5.2), act as coding device; this prevents the mating or
engagement of two connectors of the same family which should not mate in an application.
Table 3 shows the dimensions of fixed connector codings.
Table 3 – Dimensions of fixed connector codings
Dimensions in mm
Coding 1 Coding 2 Coding 3 Coding 4
Letter
Min. Nom. Max. Min. Nom. Max. Min. Nom. Max. Min. Nom. Max.
BA 3,55 3,60 3,65 1,55 1,60 1,65 1,55 1,60 1,65 1,55 1,60 1,65
BB 1,55 1,60 1,65 3,55 3,60 3,65 1,55 1,60 1,65 1,55 1,60 1,65
BC 1,55 1,60 1,65 1,55 1,60 1,65 3,55 3,60 3,65 1,55 1,60 1,65
BD 1,55 1,60 1,65 1,55 1,60 1,65 1,55 1,60 1,65 3,55 3,60 3,65
BE 9,45 9,50 9,55 9,45 9,50 9,55 9,45 9,50 9,55 9,45 9,50 9,55
BF 28,45 28,50 28,55 28,45 28,50 28,55 28,45 28,50 28,55 28,45 28,50 28,55
NOTE Each coding includes one element of large nominal dimension 3,60 mm, whose characteristic position is
highlighted in orange, and three elements of small nominal dimension 1,60 mm.

5.4.3 Terminations
Terminations shall be in accordance with IEC 60352 series for solderless connections, or
IEC 60999 series for screw-type and screwless-type clamping units.
5.5 Free connectors
5.5.1 General
Figure 5 shows a free connector and Table 4 shows the related dimensions.
5.5.2 Dimensions
Figure 5 – Free connector
Table 4 – Dimensions of free connector
Dimensions in mm
Letter Minimum Nominal Maximum
B 15,60 15,60 15,75
C 22,00 22,00 22,15
D 31,20 31,20 31,35
E 2,90 3,00 3,00
F 13,00 13,00 13,10
G 52,25 52,40 52,40
H 13,80 13,80 13,90
I 27,95 28,00 28,05
J 8,80 8,80 8,90
K 29,60 29,60 29,75
AA 40,95 41,10 41,15
AB 46,20 46,20 46,35
AC 29,15 29,20 29,25
AD 57,50 57,50 57,65
AE 64,05 64,20 64,25
AF R7,95 R8,10 R8,10
AG Ø5,95 Ø6,00 Ø6,00
AH R5,80 R5,80 R5,90
AI 7,30 7,30 7,45
AJ 15,00 15,00 15,15
AK 4,45 4,50 4,55
AL 11,95 12,00 12,05
Figure 6 – Free connector codings
The free connector hood shall be coded with one of four combinations of coding keyways in its
contour, as shown in Figure 6, using four integral coding keyways on the short sides of the
housing that, in combination with the corresponding four keys in the contour of the mating fixed
connector housing (see Figure 5), act as coding device; this prevents the mating or engagement
of two connectors of the same family which should not mate in an application. Table 5 shows
the dimensions of free connector codings.
Table 5 – Dimensions of free connector codings
Dimensions in mm
Coding 1 Coding 2 Coding 3 Coding 4
Letter
Min. Nom. Max. Min. Nom. Max. Min. Nom. Max. Min. Nom. Max.
BA 1,80 1,80 1,90 1,80 1,80 1,90 1,80 1,80 1,90 3,80 3,80 3,90
BB 1,80 1,80 1,90 1,80 1,80 1,90 3,80 3,80 3,90 1,80 1,80 1,90
BC 1,80 1,80 1,90 3,80 3,80 3,90 1,80 1,80 1,90 1,80 1,80 1,90
BD 3,80 3,80 3,90 1,80 1,80 1,90 1,80 1,80 1,90 1,80 1,80 1,90
BE 9,45 9,50 9,55 9,45 9,50 9,55 9,45 9,50 9,55 9,45 9,50 9,55
BF 28,42 28,50 28,58 28,42 28,50 28,58 28,42 28,50 28,58 28,42 28,50 28,58
BG 26,10 26,20 26,30 26,10 26,20 26,30 26,10 26,20 26,30 26,10 26,20 26,30
NOTE Each coding includes one element of large nominal dimension 3,80 mm, whose characteristic position is
highlighted in orange, and three elements of small nominal dimension 1,80 mm.

5.5.3 Terminations
Terminations shall be in accordance with IEC 60352 series for solderless connections, or
IEC 60999 series for screw-type and screwless-type clamping units.
5.6 Accessories
Not applicable.
5.7 Mounting information
Mounting information can be specified upon agreement between manufacturer and customer.
5.8 Gauges – sizing gauges and retention force gauges
See Figure 7, Figure 8, and Table 6 for gauge dimensions for signal contacts and power
contacts. Material: tool steel, with hardness of 60 HRC to 64 HRC in accordance with
ISO 6508-1 and surface roughness of Ra 0,2 μm in accordance with ISO 21920-1.
Dimensions in mm
Figure 7 – Gauge for signal contacts
Dimensions in mm
Figure 8 – Gauge for power contacts
Table 6 – Dimensions of gauges
Dimensions in millimetres
Gauge Contact category Mass Application h
g mm
+0,005
P11 - Sizing 0,67
Signal contact
P12 350 Retention force 0,62
−0,005
+0,005
P21 - Sizing 3,02
Power contact
P22 2 000 Retention force 2,98
−0,005
6 Technical characteristics
6.1 Classification into climatic categories
See 4.4.
6.2 Electrical characteristics
6.2.1 Clearance and creepage distance
See 4.5.
6.2.2 Voltage proof
Conditions: IEC 60512-4-1, Test 4a, method A.
Standard atmospheric conditions, with half of the connectors mated and half unmated. Test
voltage in accordance with Table 7.
Requirements: There shall be no breakdown or flashover.
Table 7 – Voltage proof
NO. Measuring points Test voltage Test time
V AC RMS min
Between unmated signal contacts, between signal contact
1 500
and metal shielding.
Between power contacts, between power contact and metal
2 3 310
shielding, between power contact and signal contact.

6.2.3 Contact resistance
Conditions: IEC 60512-2-1, Test 2a.
Standard atmospheric conditions.
Requirements: Initial: power contact: 0,12 mΩ max., signal contact: 5 mΩ max.;
Final: power contact: 0,24 mΩ max., signal contact: 10 mΩ max.
6.2.4 Housing (shell) electrical continuity and shielding effectiveness
6.2.4.1 Housing (shell) electrical continuity
Conditions: IEC 60512-2-6, Test 2f.
Standard atmospheric conditions, with mated connectors. Resistance shall be measured in
accordance with IEC 60512-2-2, Test 2b.
Requirements: resistance: 2 mΩ max.
6.2.4.2 Shielding effectiveness
Conditions: IEC 62153-4-6.
Standard atmospheric conditions.
Requirements: equivalent transfer impedance: 50 mΩ max.
6.2.5 Insulation resistance
Conditions: IEC 60512-3-1, Test 3a, method A.
Standard atmospheric conditions, with half of the connectors mated and half unmated.
Test voltage: 500 V DC ± 50 V DC
Requirements: Initial: between contacts, contacts and metal shielding: 5 000 MΩ min.;
Final: between contacts, contacts and metal shielding: 200 MΩ min.
6.2.6 Current-carrying capacity
The current-carrying capacity shall be verified in accordance with IEC 60512-5-2, Test 5b, with
the maximum accepted cross-sectional area (70 mm ), to verify the rated current (300 A at
75 °C) and the upper limiting temperature (125 °C). The current-temperature derating is shown
in Figure 9.
0,5
NOTE The diagram represents the formula I = 474,35 ⋅ (1 – T/125)
(T)
Figure 9 – Current-temperature derating (70 mm wire size)
6.2.7 Electrical load and temperature
Conditions: IEC 60512-9-2, Test 9b.
Standard atmospheric conditions, with mated connectors. Contacts are connected with
IEC 60228 class 5 stranded copper wires, with a cross-sectional area in accordance with 4.1.2;
the test applies to power contacts only.
Test current: 300 A, chamber temperature (to be adjusted to reach the connector upper limiting
temperature 125 °C): 85 °C.
Requirements: the appearance, contact resistance (6.2.3), housing electrical continuity (6.2.4),
insulation resistance (6.2.5), voltage proof (6.2.2), engaging and separating force (6.3.4) and
IP degree of protection (6.4.4) shall meet the requirements of this specification after test.
6.3 Mechanical characteristics
6.3.1
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