IEC TS 63379:2026

IEC TS 63379 ®
Edition 1.0 2026-01
TECHNICAL
SPECIFICATION
Vehicle connector, vehicle inlet and cable assembly for megawatt DC charging

ICS 29.120.30; 43.120 ISBN 978-2-8327-1011-1

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CONTENTS
FOREWORD . 9
INTRODUCTION . 11
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 14
4 General . 15
4.100 System architecture . 15
4.101 Manufacturers product data sheet . 18
4.102 Maximum temperatures . 18
4.103 Ambient rating . 19
4.104 POC design . 19
5 Ratings . 19
6 Connection between the power supply and the electric vehicle . 20
7 Classification of accessories . 20
8 Marking . 21
9 Dimensions . 21
10 Protection against electric shock . 21
11 Size and colour of protective earthing conductors . 22
12 Provision for earthing . 23
13 Terminals. 23
14 Interlocks . 23
14.100 Accessories with interlocks . 23
14.100.1 General. 23
14.100.2 Electrical interlock . 24
14.100.3 Mechanical interlock . 24
14.100.4 Test of interlock . 24
14.101 Engage and disengage the latching device . 25
14.101.1 General. 25
14.101.2 Samples. 25
14.101.3 Test sequence . 25
14.102 Withdrawal test. 27
15 Resistance to ageing of rubber and thermoplastic material . 28
16 General construction . 28
16.100 Thermal sensing device . 29
16.101 Loss of thermal transport . 29
16.101.1 Loss of thermal transport of connectors and cable assemblies . 29
16.101.2 Loss of thermal transport of the vehicle inlet . 30
16.102 Accessories using thermal sensing . 30
16.103 Rated current for accessories . 31
16.104 Operation conditions of thermal management system . 31
16.105 Minimum cross section of line conductors. 31
16.106 Contact temperature . 31
17 Construction of socket-outlets . 32
18 Construction of plugs and vehicle connectors . 32
18.100 DC contact surface . 32
18.101 Hand clearance zone . 32
19 Construction of vehicle inlets . 32
19.100 DC contact surface . 32
20 Degrees of protection . 33
21 Insulation resistance and dielectric strength . 33
22 Breaking capacity . 33
23 Normal operation . 33
23.2 Load endurance test . 33
24 Temperature rise . 33
24.100 General test conditions. 33
24.101 Temperature rise test for cable assembly . 33
24.101.1 Temperature rise test for cable assembly of configuration HH . 33
24.101.2 Temperature rise test for cable assembly of configuration JJ with
thermal transport on or thermal sensing only. 34
24.101.3 Temperature rise test for cable assembly of configuration JJ with
thermal transport off . 35
24.102 Test for thermal sensing device of cable assembly . 36
24.102.1 Test for thermal sensing device of cable assembly of configuration HH . 36
24.102.2 Test for thermal sensing device of cable assembly of configuration JJ . 37
24.103 Temperature rise test for vehicle inlet . 40
24.103.1 Temperature rise test for vehicle inlet of configuration HH . 40
24.103.2 Temperature rise test for vehicle inlet of configuration JJ with thermal
transport on . 42
24.103.3 Temperature rise test for vehicle inlet of configuration JJ with thermal
transport off. 42
24.104 Test for thermal sensing device of vehicle inlet . 43
24.104.1 Test for thermal sensing device of vehicle inlet of configuration HH . 43
24.104.2 Test for thermal sensing device of vehicle inlet of configuration JJ . 45
25 Flexible cables and their connection . 46
25.100 Design of cables . 46
26 Mechanical strength . 46
27 Screws, current-carrying parts and connections . 48
28 Creepage distances, clearances and distances through sealing compound . 48
29 Resistance to heat and to fire . 48
30 Corrosion and resistance to rusting . 48
31 Conditional short-circuit current. 48
32 Electromagnetic compatibility . 48
33 Vehicle drive over . 48
34 Thermal cycling . 49
35 Humidity exposure . 49
36 Misalignment . 49
37 Contact endurance test . 49
38 Liquid coolants . 49
38.1 Type of coolant. 49
38.2 Environmental considerations . 49
38.3 Flammability. 50
38.4 Conductivity . 50
38.5 Material compatibility . 50
38.6 Overpressure test . 50
39 Signal integrity . 51
Annex A (normative) Standard sheet of configuration HH: Vehicle coupler 1 500 V DC
and up to 3 000 A . 52
A.1 Vehicle inlet of configuration HH . 52
A.1.1 Vehicle inlet of configuration HH, Sheet 1 (see Figure A.1) . 52
A.1.2 Vehicle inlet of configuration HH, Sheet 2 (see Figure A.2) . 53
A.1.3 Vehicle inlet of configuration HH, Sheet 3 (see Figure A.3) . 54
A.1.4 Vehicle inlet of configuration HH, Sheet 4 (see Figure A.4) . 55
A.1.5 Vehicle inlet of configuration HH, Sheet 5 (see Figure A.5) . 56
A.1.6 Vehicle inlet of configuration HH, Sheet 6 (see Figure A.6) . 57
A.1.7 Vehicle inlet of configuration HH, Sheet 7 (see 7) . 58
A.1.8 Vehicle inlet of configuration HH, Sheet 8 (see Figure A.8) . 59
A.1.9 Vehicle inlet of configuration HH, Sheet 9 (see Figure A.9) . 60
A.1.10 Vehicle inlet of configuration HH, table of keys. 60
A.2 Vehicle connector of configuration HH . 61
A.2.1 Vehicle connector of configuration HH, Sheet 1 (see Figure A.10) . 61
A.2.2 Vehicle connector of configuration HH, Sheet 2 (see Figure A.11) . 62
A.2.3 Vehicle connector of configuration HH, Sheet 3 (see Figure A.12) . 63
A.2.4 Vehicle connector of configuration HH, Sheet 4 (see Figure A.13) . 64
A.2.5 Vehicle connector of configuration HH, Sheet 5 (see Figure A.14) . 65
A.2.6 Vehicle connector of configuration HH, Sheet 6 (see Figure A.15) . 66
A.2.7 Vehicle connector of configuration HH, Sheet 7 (see Figure A.16) . 67
A.2.8 Vehicle connector of configuration HH, Sheet 8 (see Figure A.17) . 68
A.2.9 Vehicle connector of configuration HH, Sheet 9 (see Figure A.18) . 69
A.2.10 Vehicle connector of configuration HH, Sheet 10 (see Figure A.19) . 70
A.2.11 Dimensions of vehicle connector body outline (see Figure A.20) . 71
A.2.12 Vehicle connector of configuration HH, table of keys . 71
A.3 Coordinate systems for automatic docking and undocking of
configuration HH . 72
A.3.1 General. 72
A.3.2 Coordinate system of vehicle inlet . 72
A.3.3 Coordinate system of vehicle connector . 72
A.3.4 Package space for automatic docking . 73
Annex B (normative) Standard sheets of configuration JJ : Vehicle coupler 1 500 V DC
and up to 1 600 A . 74
B.1 Vehicle inlet of configuration JJ with mechanical coding . 74
B.1.1 Vehicle inlet of configuration JJ with mechanical coding, Sheet 1 (see
Figure B.1) . 74
B.1.2 Vehicle inlet of configuration JJ with mechanical coding, Sheet 2 (see
Figure B.2) . 75
B.1.3 Vehicle inlet of configuration JJ with mechanical coding, Sheet 3 (see
Figure B.3) . 76
B.1.4 Vehicle inlet of configuration JJ with mechanical coding, Sheet 4 (see
Figure B.4) . 77
B.1.5 Vehicle inlet of configuration JJ with mechanical coding, Sheet 5 (see
Figure B.5) . 78
B.1.6 Vehicle inlet of configuration JJ with mechanical coding, table of keys. 78
B.2 Vehicle inlet of configuration JJ without mechanical coding . 79
B.2.1 Vehicle inlet of configuration JJ without mechanical coding, Sheet 1
(see Figure B.6) . 79
B.2.2 Vehicle inlet of configuration JJ without mechanical coding, Sheet 2
(see Figure B.7) . 80
B.2.3 Vehicle inlet of configuration JJ without mechanical coding, Sheet 3
(see Figure B.8) . 81
B.2.4 Vehicle inlet of configuration JJ without mechanical coding, Sheet 4
(see Figure B.9) . 82
B.2.5 Vehicle inlet of configuration JJ without mechanical coding, Sheet 5
(see Figure B.10) . 83
B.2.6 Vehicle inlet of configuration JJ without mechanical coding, table of
keys . 83
B.3 Vehicle connector of configuration JJ . 84
B.3.1 Vehicle connector of configuration JJ, Sheet 1 (see Figure B.11) . 84
B.3.2 Vehicle connector of configuration JJ, Sheet 2 (see Figure B.12) . 85
B.3.3 Vehicle connector of configuration JJ, Sheet 3 (see Figure B.13) . 86
B.3.4 Vehicle connector of configuration JJ, Sheet 4 (see Figure B.14) . 87
B.3.5 Vehicle connector of configuration JJ, Sheet 5 (see Figure B.15) . 88
B.3.6 Vehicle connector of configuration JJ, Sheet 6 (see Figure B.16) . 89
B.3.7 Vehicle connector of configuration JJ, table of keys . 89
Annex C (normative) Specific information for configuration HH . 90
C.1 General . 90
C.2 Test setups for temperature rise tests and temperature sensing test . 90
C.2.1 Test setups for temperature rise test and temperature sensing test of
cable assembly . 90
C.2.2 Test setups for temperature rise and temperature sensing test of
vehicle inlet . 91
C.3 Vehicle inlet reference device preparation . 92
C.3.1 Validation measurement of the vehicle inlet reference device . 92
C.3.2 Vehicle inlet reference device assembly . 93
C.3.3 Vehicle inlet reference device sub-assembly . 98
C.3.4 Vehicle inlet reference device components . 105
Annex D (normative) Specific information for configuration JJ . 131
D.1 General . 131
D.2 Reference devices and test setups for configuration JJ . 131
D.2.1 Reference device and test setups for temperature rise test and thermal
sensing device test of cable assembly (configuration JJ) . 131
D.2.2 Reference device and test setups for temperature rise test and thermal
sensing device test of vehicle inlet (configuration JJ) . 133
D.3 Test setup for configuration JJ . 135
D.4 Contacts for configuration JJ. 136
D.5 Other drawings . 136
D.5.1 Final assembly of the vehicle inlet reference device . 136
D.5.2 Final assembly of the vehicle connector reference device . 137
D.5.3 Sub-assembly of the vehicle inlet reference device . 138
D.5.4 Sub-assembly of the vehicle connector reference device . 139
D.5.5 Connector pin of vehicle connector reference device . 140
D.5.6 Contact tube of vehicle inlet reference device . 141
D.5.7 Contact clip of vehicle inlet reference device . 142
D.5.8 Copper busbar of vehicle inlet reference device . 143
D.5.9 Copper busbar of vehicle connector reference device . 144
D.5.10 Connector pin holder . 145
D.5.11 Connector pin fastening plate . 146
D.5.12 Drilling jig for DUT connector interface . 146
Annex E (informative) Overview about tests . 148
Annex F (normative) Data to be provided . 169
Bibliography . 171

Figure 1 – Example of system architecture of connector design 1 and inlet design 1. 16
Figure 2 – Example of system architecture of connector design 2 and inlet design 1. 17
Figure 3 – Example of system architecture of connector design 2 and inlet design 2. 18
Figure 4 – Verification of the latching device . 25
Figure 5 – Interlock test setup for checking latched position and unlatched position . 26
Figure 6 – Verification of the latching device . 28
Figure A.1 – Vehicle inlet of configuration HH, Sheet 1 . 52
Figure A.2 – Vehicle inlet of configuration HH, Sheet 2 . 53
Figure A.3 – Vehicle inlet of configuration HH, Sheet 3 . 54
Figure A.4 – Vehicle inlet of configuration HH, Sheet 4 . 55
Figure A.5 – Vehicle inlet of configuration HH, Sheet 5 . 56
Figure A.6 – Vehicle inlet of configuration HH, Sheet 6 . 57
Figure A.7 – Vehicle inlet of configuration HH, Sheet 7 . 58
Figure A.8 – Vehicle inlet of configuration HH, Sheet 8 . 59
Figure A.9 – Vehicle inlet of configuration HH, Sheet 9 . 60
Figure A.10 – Vehicle connector of configuration HH, Sheet 1 . 61
Figure A.11 – Vehicle connector of configuration HH, Sheet 2 . 62
Figure A.12 – Vehicle connector of configuration HH, Sheet 3 . 63
Figure A.13 – Vehicle connector of configuration HH, Sheet 4 . 64
Figure A.14 – Vehicle connector of configuration HH, Sheet 5 . 65
Figure A.15 – Vehicle connector of configuration HH, Sheet 6 . 66
Figure A.16 – Vehicle connector of configuration HH, Sheet 7 . 67
Figure A.17 – Vehicle connector of configuration HH, Sheet 8 . 68
Figure A.18 – Vehicle connector of configuration HH, Sheet 9 . 69
Figure A.19 – Vehicle connector of configuration HH, Sheet 10 . 70
Figure A.20 – Dimensions of vehicle connector body outline . 71
Figure A.21 ─ Vehicle inlet coordinate system of vehicle inlet according to
configuration HH . 72
Figure A.22 – Vehicle connector coordinate system of vehicle connector according to
Configuration HH . 73
Figure B.1 – Vehicle inlet of configuration JJ with mechanical coding, Sheet 1 . 74
Figure B.2 – Vehicle Inlet of configuration JJ with mechanical coding, Sheet 2 . 75
Figure B.3 – Vehicle inlet of configuration JJ with mechanical coding, Sheet 3 . 76
Figure B.4 – Vehicle inlet of configuration JJ with mechanical coding, Sheet 4 . 77
Figure B.5 – Vehicle inlet of configuration JJ with mechanical coding, Sheet 5 . 78
Figure B.6 – Vehicle inlet of configuration JJ without mechanical coding, Sheet 1 . 79
Figure B.7 – Vehicle inlet of configuration JJ without mechanical coding, Sheet 2 . 80
Figure B.8 – Vehicle inlet of configuration JJ without mechanical coding, Sheet 3 . 81
Figure B.9 – Vehicle inlet of configuration JJ without mechanical coding, Sheet 4 . 82
Figure B.10 – Vehicle inlet of configuration JJ without mechanical coding, Sheet 5 . 83
Figure B.11 – Vehicle connector of configuration JJ, Sheet 1 . 84
Figure B.12 – Vehicle connector of configuration JJ, Sheet 2 . 85
Figure B.13 – Vehicle connector of configuration JJ, Sheet 3 . 86
Figure B.14 – Vehicle connector of configuration JJ, Sheet 4 . 87
Figure B.15 – Vehicle connector of configuration JJ, Sheet 5 . 88
Figure B.16 – Vehicle connector of configuration JJ, Sheet 6 . 89
Figure C.1 – General test setup for cable assemblies . 91
Figure C.2 – General test setup for vehicle inlets . 92
Figure C.3 – Assembly of the vehicle inlet reference device for 1 000 A . 94
Figure C.4 – Assembly of the vehicle inlet reference device for 1 500 A . 95
Figure C.5 – Assembly of the vehicle inlet reference device for 2 000 A . 96
Figure C.6 – Assembly of the vehicle inlet reference device for 2 500 A . 97
Figure C.7 – Assembly of the vehicle inlet reference device for 3 000 A . 98
Figure C.8 – Configuration HH: Sub-assembly of the vehicle inlet reference device for
1 000 A . 100
Figure C.9 – Configuration HH: Sub-assembly of the vehicle inlet reference device for
1 500 A . 101
Figure C.10 – Configuration HH: Sub-assembly of the vehicle inlet reference device for
2 000 A . 102
Figure C.11 – Configuration HH: Sub-assembly of the vehicle inlet reference device for
2 500 A . 103
Figure C.12 – Configuration HH: Sub-assembly of the vehicle inlet reference device for
3 000 A . 104
Figure C.13 – Configuration HH: Drawing of DC-Pin for 1 000 A . 105
Figure C.14 – Configuration HH: Drawing of DC-Pin for 1 500 A . 106
Figure C.15 – Configuration HH: Drawing of DC-Pin for 3 000 A . 108
Figure C.16 – Configuration HH: Drawing of busbar for 1 000 A – basic structure. 109
Figure C.17 – Configuration HH: Drawing of busbar for 1 000 A – paintwork . 110
Figure C.18 – Configuration HH: Drawing of busbar for 1 000 A – temperature sensor . 111
Figure C.19 – Configuration HH: Drawing of busbar for 1 500 A – basic structure. 112
Figure C.20 – Configuration HH: Drawing of busbar for 1 500 A – paintwork . 113
Figure C.21 – Configuration HH: Drawing of busbar for 1 500 A – temperature sensor . 114
Figure C.22 – Configuration HH: Drawing of busbar for 2 000 A – basic structure. 115
Figure C.23 – Configuration HH: Drawing of busbar for 2 000 A – paintwork . 116
Figure C.24 – Configuration HH: Drawing of busbar for 2 000 A – temperature sensor . 117
Figure C.25 – Configuration HH: Drawing of busbar for 2 500 A – basic structure. 118
Figure C.26 – Configuration HH: Drawing of busbar for 2 500 A – paintwork . 119
Figure C.27 – Configuration HH: Drawing of busbar for 2 500 A – temperature sensor . 120
Figure C.28 – Configuration HH: Drawing of busbar for 3 000 A – basic structure. 121
Figure C.29 – Configuration HH: Drawing of busbar for 3 000 A – paintwork . 122
Figure C.30 – Configuration HH: Drawing of busbar for 3 000 A – temperature sensor . 123
Figure C.31 – Configuration HH: Drawing inlet contact holder for 1 000 A . 124
Figure C.32 – Configuration HH: Drawing inlet contact holder for 1 500 A . 125
Figure C.33 – Configuration HH: Drawing inlet contact holder for 3 000 A . 126
Figure C.34 – Configuration HH: Drawing fastening plate for 1 000 A . 127
Figure C.35 – Configuration HH: Drawing fastening plate for 1 500 A . 128
Figure C.36 – Configuration HH: Drawing fastening plate for 3 000 A . 129
Figure C.37 – Configuration HH: Drawing manual latching pin . 130
Figure D.1 – Vehicle inlet reference device JJ_0. 131
Figure D.2 – Test setup JJ_0 . 132
Figure D.3 – Vehicle connector reference device JJ_1 . 133
Figure D.4 – Test setup JJ_1 . 134
Figure D.5 – General test setup for temperature rise tests and thermal sensing device
tests (configuration JJ) . 135
Figure D.6 – General test setup for temperature rise tests and thermal sensing device
tests (configuration JJ) . 136
Figure D.7 – Final assembly of the vehicle inlet reference device . 137
Figure D.8 – Final assembly of the vehicle connector reference device . 138
Figure D.9 – Sub-assembly of the vehicle inlet reference device . 139
Figure D.10 – Sub-assembly of the vehicle connector reference device. 140
Figure D.11 – Connector pin of vehicle connector reference device . 141
Figure D.12 – Contact tube of vehicle inlet reference device . 142
Figure D.13 – Contact clip of vehicle inlet reference device . 143
Figure D.14 – Copper busbar of vehicle inlet reference device . 144
Figure D.15 – Copper busbar of vehicle inlet reference device . 145
Figure D.16 – Example of connector pin holder . 146
Figure D.17 – Example of connector pin fastening plate . 146
Figure D.18 – Drilling jig for cable assembly . 147

Table 1 – Overview of the DC vehicle interface . 20
Table 2 – Interface overview . 21
Table 3 – Protective earthing test parameters. 23
Table 4 – Withdrawal force . 24
Table 5 – Definition of interlock test numbers for checking latched position and
unlatched position . 26
Table 6 – Properties of DC accessory contact plating for pin . 32
Table 7 – Pull force and torque test values for cable anchorage . 46
Table 8 – Mechanical strength tests . 47
Table 9 – Impact energy for ball impact test . 47
Table C.1 – Vehicle inlet reference device ratings and electrical resistance . 93
Table D.1 – Dimensions of vehicle inlet reference device JJ_0 . 132
Table D.2 – Maximum contact resistances and dimensions of vehicle connector
reference device JJ_1 . 134
Table D.3 – Thickness dimensions of copper busbar of vehicle connector reference
device . 145
Table E.1 – Tests for cable assembly of configuration HH . 148
Table E.2 – Tests for cable assembly of configuration JJ . 151
Table E.3 – Tests for vehicle Inlets of configuration HH . 155
Table E.4 – Tests for vehicle Inlets of configuration JJ . 158
Table E.5 – Tests for cable assembly of configuration HH, test sequence A. 161
Table E.6 – Tests for cable assembly of configuration HH, test sequence B. 161
Table E.7 – Tests for cable assembly of configuration HH, test sequence C . 162
Table E.8 – Tests for cable assembly of configuration HH, test sequence D . 162
Table E.9 – Tests for cable assembly of configuration JJ, test sequence A . 163
Table E.10 – Tests for cable assembly of configuration JJ, test sequence B . 163
Table E.11 – Tests for cable assembly of configuration JJ, test sequence C . 164
Table E.12 – Tests for cable assembly of configuration JJ, test sequence D . 164
Table E.13 – Tests for vehicle inlets of configuration HH, test sequence A . 165
Table E.14 – Tests for vehicle inlets of configuration HH, test sequence B . 165
Table E.15 – Tests for vehicle inlets of configuration HH, test sequence C . 166
Table E.16 – Tests for vehicle inlets of configuration HH, test sequence D . 166
Table E.17 – Tests for vehicle inlets of configuration JJ, test sequence A. 167
Table E.18 – Tests for vehicle inlets of configuration JJ, test sequence B. 167
Table E.19 – Tests for vehicle inlets of configuration JJ, test sequence C . 168
Table E.20 – Tests for vehicle inlets of configuration JJ, test sequence D . 168
Table F.1 – Data provided in the PDS . 169

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Vehicle connector, vehicle inlet and cable assembly
for megawatt DC charging
FOREWORD
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IEC TS 63379 has been prepared by subcommittee 23H: Plugs, socket-outlets and couplers for
industrial and similar applications, and for electric vehicles, of IEC technical committee TC 23:
Electrical accessories. It is a Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
23H/574/DTS 23H/590/RVDTS
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 Technical Specification 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
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