ISO INTERNATIONAL STANDARD 3731 Fourth edition 2003-11-01 Road vehicles Connectors for the electrical connection of towing and towed vehicles - 7-pole connector type 24 S (supplementary) for vehicles with 24 v nominal supply voltage Vehicules routiers- Connecteurs pour liaisons électriques entre véhicules tracteurs et véhicules tractés - Connecteur a 7 contacts de type 24 S (supplémentaire) pour les vehicules a tension nominale de 24 v Reference number ISO 3731:2003(E) ISO @ ISO 2003 ISO 3731:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is atrademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. @ISO2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either isO at the address below or ISO's memberbody in the country oftherequester. ISO copyright office Case postale 56 : CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org ii ISO2003All rights reserved ISO3731:2003(E) Contents Page Foreword 1 Scope.. 2 Normative references. 3 Terms and definitions 4 Dimensions... 5 Application of connector . 6 Performance requirements. Bibliography... @ ISO 2003 - All rights reserved ii ISO 3731:2003(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 3731 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical andelectronicequipment. This fourth edition cancels and replaces the third edition (ISO 3731:1997), which has been technically revised iv ISO 2003- All rights reserved ISO 3731:2003(E) INTERNATIONALSTANDARD Road vehicles Connectors for the electrical connection of towing and towed vehicles 7-pole connector type 24 S (supplementary) for vehicles with 24 V nominal supply voltage 1 Scope This International Standard specifies the dimensional characteristics of, and specific requirements for, 7-pole connectors of type 24 S and their contact allocation for the electrical connection of towing and towed vehicles with 24 V nominal supply voltage, thus ensuring interchangeability. A 24 S connector is intended to be used in addition to a 24 N connector according to IsO 1185 where more than 7 poles are required. NOTE For new developments and where more than 7 poles are required, as an alternative to the use of the 7-pole connector inaccordancewiththisInternational Standardand isO1185,useof the15-pole connectorinaccordance with ISO 12098 [1] may be required. 2 Normative references The following referenced documents are indispensable for application of this