EN ISO 4165:2003

Road vehicles - Electrical connections - Double-pole connection (ISO 4165:2001)

This International Standard specifies the dimensions and electrical characteristics of the double-pole connection
required for the interchangeability of the electrical connections used to supply additional appliances in road vehicles
with a nominal supply voltage of 12V or 24 V d.c.

Straßenfahrzeuge - Elektrische Verbindungen - Zweipolige Steckvorrichtung (ISO 4165:2001)

Diese Internationale Norm legt die Maße und elektronischen Eigenschaften der zweipoligen Steckverbindung fest, die für die Austauschbarkeit von elektrischen Steckverbindungen notwendig sind um zusätzliche Geräte in Straßenfahrzeugen mit einer Nenngleichspannung von 12 V oder 24 V zu versorgen.

Véhicules routiers - Connexions électriques - Connexion bipolaire (ISO 4165:2001)

La présente Norme internationale spécifie les dimensions et les caractéristiques électriques d'une connexion
bipolaire exigées pour l'interchangeabilité des connexions électriques utilisées pour les équipements
complémentaires des véhicules routiers dont la tension nominale est de 12 V 24 V ou continus.

Cestna vozila – Električni priključki – Dvopolne vtične naprave (ISO 4165:2001)

General Information

• Status: Published
• Publication Date: 06-May-2003
• Withdrawal Date: 29-Nov-2003
• ICS: 43.040.10 - Electrical and electronic equipment
• Technical Committee: CEN/SS T03 - Road vehicles
• Drafting Committee: CEN/SS T03 - Road vehicles
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 07-May-2003
• Completion Date: 07-May-2003
• Ref Project: SIST EN ISO 4165:2004 - Road vehicles - Electrical connections - Double-pole connection (ISO 4165:2001)

Relations

• Replaces: EN 24165:1991 - Road vehicles - Electrical connections - Double pole connector (ISO 4165:1979)
• Effective Date: 22-Dec-2008
• Refers: EN ISO 23279:2010 - Non-destructive testing of welds - Ultrasonic testing - Characterization of indications in welds (ISO 23279:2010)
• Effective Date: 28-Jan-2026
• Refers: EN 13565-1:2003+A1:2007 - Fixed firefighting systems - Foam systems - Part 1: Requirements and test methods for components
• Effective Date: 28-Jan-2026

Overview

EN ISO 4165:2003 – Road Vehicles - Electrical Connections - Double-Pole Connection (ISO 4165:2001), published by CEN, sets a unified standard for the dimensions and electrical characteristics of double-pole electrical connectors in road vehicles. The primary purpose of this standard is to ensure interchangeability for electrical connections used to supply additional appliances in vehicles with a nominal supply voltage of 12V or 24V direct current (DC).

This standard plays a crucial role in the design, manufacturing, and maintenance of automotive electrical systems, especially where reliable power supply to auxiliary devices is necessary.

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Key Topics

• Double-pole connectors
  Specifies dimensions and technical characteristics ensuring compatibility and safe operation when connecting additional electrical appliances.

• Voltage compatibility
  Covers systems with a nominal supply voltage of 12V or 24V DC, typical in passenger and commercial vehicles.

• Physical interchangeability
  Sets standard dimensions for plugs and sockets, enabling use between different manufacturers and markets.

• Electrical performance requirements
  Details maximum and minimum connection/disconnection forces, temperature rise limits, connection resistance (voltage drop), and high-voltage withstand capabilities.

• Testing protocols
  Referenced tests include those for temperature rise, humidity cycling, durability (insertion cycles), and voltage drop, ensuring the long-term reliability of connections.

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Applications

The EN ISO 4165:2003 standard is widely applied in the automotive industry for the following:

• Supplying auxiliary devices:
  Ensures safe and reliable electrical connections for extra equipment such as portable refrigerators, chargers, and navigation systems.

• Vehicle modification and aftermarket:
  Facilitates seamless upgrades, retrofitting, or replacement of connectors without the risk of incompatibility.

• Passenger and commercial vehicles:
  Used both inside protected areas, like passenger and luggage compartments, and-if further protected-externally.

• Fleet maintenance and international trade:
  Supports interoperability across different manufacturers and national markets, simplifying global supply chains and vehicle servicing.

The standard's clear specifications on connector dimensions and electrical behavior protect vehicle wiring and devices from electrical faults and ensure consistent performance.

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Related Standards

For comprehensive vehicle electrical system design and conformity, refer to the following standards closely related to EN ISO 4165:2003:

• ISO 6722:
  Focuses on dimensions, test methods, and requirements for single-core cables up to 60V and 600V used in road vehicles.

• ISO 8092-2:
  Describes definitions, test methods, and general performance requirements for electrical connectors in on-board wiring harnesses.

These referenced standards provide additional technical background for cable selection, connector testing, and overall automotive electrical system reliability.

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By adhering to EN ISO 4165:2003, automotive manufacturers, suppliers, and maintenance providers ensure robust, interoperable, and safe electrical connections in a wide range of road vehicle applications. Consistency with this standard streamlines component sourcing, engineering processes, and international vehicle compliance, marking it as a cornerstone for automotive electrical infrastructure.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2004
&HVWQDYR]LOD±(OHNWULþQLSULNOMXþNL±'YRSROQHYWLþQHQDSUDYH,62
Road vehicles - Electrical connections - Double-pole connection (ISO 4165:2001)
Straßenfahrzeuge - Elektrische Verbindungen - Zweipolige Steckvorrichtung (ISO
4165:2001)
Véhicules routiers - Connexions électriques - Connexion bipolaire (ISO 4165:2001)
Ta slovenski standard je istoveten z: EN ISO 4165:2003
ICS:
43.040.10 (OHNWULþQDLQHOHNWURQVND Electrical and electronic
RSUHPD equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 4165
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2003
ICS 43.040.10 Supersedes EN 24165:1991
English version
Road vehicles - Electrical connections - Double-pole connection
(ISO 4165:2001)
Véhicules routiers - Connexions électriques - Connexion Straßenfahrzeuge - Elektrische Verbindungen - Zweipolige
bipolaire (ISO 4165:2001) Steckverbindung (ISO 4165:2001)
This European Standard was approved by CEN on 20 February 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4165:2003 E
worldwide for CEN national Members.

Foreword
The text of ISO 4165:2001 has been prepared by Technical Committee ISO/TC 22 "Road
vehicles” of the International Organization for Standardization (ISO) and has been taken over as
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by November 2003, and conflicting national
standards shall be withdrawn at the latest by November 2003.
This document supersedes EN 24165:1991.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 4165:2001 has been approved by CEN as EN ISO 4165:2003 without any
modifications.
INTERNATIONAL ISO
STANDARD 4165
Second edition
2001-12-01
Road vehicles — Electrical connections —
Double-pole connection
Véhicules routiers — Connexions électriques — Connexion bipolaire

Reference number
ISO 4165:2001(E)
©
ISO 2001
ISO 4165:2001(E)
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ii ISO 2001 – All rights reserved

ISO 4165:2001(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the te
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