ISO 4091-2003 PDF

Full title and description

St ISO 4091-2003 — Road vehicles — Connectors for the electrical connection of towing and towed vehicles — Definitions, tests and requirements. This international standard defines terms, specifies the tests and sets performance requirements for electrical connectors used between towing and towed road vehicles (trailers, caravans, semi-trailers and similar), and references connector types and interfaces covered by related ISO connector standards.

Abstract

ISO 4091:2003 provides definitions relevant to vehicle towing/towed electrical connectors and specifies the test methods and performance requirements those connectors must meet. It is intended to ensure reliable electrical connections between towing and towed vehicles by addressing electrical, mechanical and environmental performance characteristics and by referencing established connector interface standards.

General information

• Status: Published / International Standard (confirmed under ISO systematic review process).
• Publication date: 2003-11 (November 2003).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.040.10 (Road vehicle engineering).
• Edition / version: Edition 3 (ISO 4091:2003).
• Number of pages: 18 pages.

Scope

ISO 4091:2003 applies to connectors used for the electrical connection of towing and towed road vehicles. The standard is applicable to all connector types used for this purpose and refers to specific connector interface standards (for example ISO 1185, ISO 1724, ISO 3731, ISO 3732, ISO 7638-1, ISO 7638-2, ISO 11446 and ISO 12098) to ensure interoperability and to define tests and requirements in the context of those connector families. The objective is consistent, safe and durable electrical interconnection for signals, lighting and power circuits between vehicles.

Key topics and requirements

• Definitions and terminology for towing/towed vehicle electrical connectors (pin identification, contact types, mating faces).
• Electrical performance tests: contact resistance, insulation resistance, dielectric strength and continuity checks.
• Current carrying capacity and temperature-rise assessments for contacts and connectors.
• Mechanical tests: mating/unmating cycles, retention/locking force, mechanical endurance, vibration and shock resistance.
• Environmental tests: corrosion (salt spray), humidity, temperature cycling, ingress protection and resistance to fluids commonly encountered in road use.
• Requirements for materials, plating and corrosion protection, plus criteria for acceptable performance after testing.
• Reference to dimensional and interface requirements given in other ISO connector standards to ensure compatibility between towing and towed vehicle equipment.

Typical use and users

Vehicle OEMs (truck, bus, trailer and caravan manufacturers), connector and wiring-harness suppliers, aftermarket component manufacturers, independent test laboratories, regulatory bodies and fleet maintenance organizations use ISO 4091:2003 when specifying, designing, testing, procuring or verifying electrical connectors and interconnection systems for towing and towed vehicles.

Related standards

ISO 4091:2003 references and is used alongside connector/interface standards including (but not limited to) ISO 1185, ISO 1724, ISO 3731, ISO 3732, ISO 7638-1, ISO 7638-2, ISO 11446 and ISO 12098; these define specific connector geometries, pin assignments and additional requirements for particular vehicle classes or functions. For complete interoperability and detailed interface dimensions consult the individual connector standards.

Keywords

electrical connector, towing, trailer, trailer connector, pin assignment, contact resistance, insulation resistance, dielectric strength, vibration, corrosion, ISO 4091:2003, road vehicle connectors

FAQ

Q: What is this standard?

A: ISO 4091:2003 is an international standard that defines terms and specifies tests and performance requirements for electrical connectors used between towing and towed road vehicles.

Q: What does it cover?

A: It covers definitions, electrical, mechanical and environmental tests and minimum performance criteria for connectors intended for towing/towed vehicle electrical interconnection; it also references specific connector interface standards for dimensional and pin-assignment details.

Q: Who typically uses it?

A: Vehicle manufacturers, trailer and caravan makers, connector and harness suppliers, test laboratories, fleet operators and regulatory/approval authorities use the standard when specifying, testing or approving towing/towed vehicle electrical connectors.

Q: Is it current or superseded?

A: ISO 4091:2003 is the 2003 edition (Edition 3). Users should check the ISO catalogue or national standards body for the latest status or any newer revisions or confirmations, since ISO standards are subject to periodic review.

Q: Is it part of a series?

A: ISO 4091 is part of the family of ISO standards addressing vehicle electrical connectors and tow/towed interfaces; it is intended to be used together with the specific connector/interface standards such as ISO 1185, ISO 1724, ISO 11446, ISO 12098 and the ISO 7638 series.

Q: What are the key keywords?

A: Connector, towing, trailer, pin assignment, electrical tests, contact resistance, insulation resistance, dielectric strength, vibration, corrosion, ISO 4091:2003.