BS ISO 10924-4:2015 BSl Standards Publication Road vehicles Circuit breakers Part 4: Medium circuit breakers with tabs (Blade type), Form CB15 bsi. ..making excellence a habit. BRITISH STANDARD BSISO10924-4:2015 National foreword This British Standard is the UK implementation of Is0 10924-4:2015. It supersedes BS IS0 10924-4:2009 which is withdrawn. The UK participation in its preparation was entrusted to Technical CommitteeAUE/16,DataCommunication(RoadVehicles) A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @The British Standards Institution 2015.Published by BSI Standards Limited 2015 ISBN9780580846823 ICS 43.040.10 Compliance with a British Standard cannot confer immunityfrom legal obligations. This British Standard was published under the authority of the StandardsPolicy andStrategyCommitteeon31July2015. Amendments issued since publication Date Textaffected BS ISO 10924-4:2015 INTERNATIONAL ISO STANDARD 10924-4 Secondedition 2015-08-01 Road vehicles Circuit breakers Part 4: Medium circuit breakers with tabs (Blade type), Form CB15 Vehiculesroutiers-Coupe-circuits- Partie 4: Coupe-circuits moyens a languettes (de type lame),forme CB15 Reference number IS0 10924-4:2015(E) TSO @ISO2015 BSISO10924-4:2015 IS010924-4:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland copy: All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,or posting on the internet or an intranet,without prior written permission. Permission can be requested from either ISO at the address below or ISo's member body in the country of Licensed the requester. ISo copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 0111 Fax +41 22 749 09 47 [email protected] www.iso.org ii ISO2015-Allrights reserved BS ISO10924-4:2015 IS010924-4:2015(E) Contents Page Foreword ..iv Scope 1 ..1 2 Normativereferences 3 Terms and definitions 4 Marking, labelling and colour coding 5 Tests and requirements. ..2 5.1 General .2 5.1.1 General test conditions .2 5.1.2 Test sequence plan 2 5.1.3 Test cable sizes .3 5.2 Voltage drop 4 5.2.1 Purpose .4 5.2.2 Tests. 4 5.2.3 Requirements 4 5.3 Maximum housing temperature 4 5.4 Environmental conditions. 5 5.5 Operating time-rating 5 5.5.1 Purpose 5 5.5.2 Tests. .5 5.5.3 Requirements 5 5.6 .5 Current steps 5.7 No current trip and reset temperature 5 5.8 Absolute breaking capacity .5 5.8.1 Purpose 5 5.8.2 Tests 6 5.8.3 Requirements 6 5.9 Breaking capacity .6 5.9.1 Purpose .6 5.9.2 Tests .6 5.9.3 Requirements .6 5.10 Strength of terminals. 6 5.11 Endurance. .6 5.11.1 Purpose 6 5.11.2 Tests. .6 5.11.3 Requirements 7 5.12 Dielectric strength .7 5.12.1 .7 Purpose 5.12.2 Tests .7 5.12.3 Requirement. Dimensions and designation example ..7 6 6.1 Dimensions. .7 6.1.1 Category A 6.1.2 Category B. 9 6.1.3 Category C. 6.1.4 Category D .10 6.1.5 Category E. .10 6.1.6 Category F and G ..11 6.1.7 Category H. .11 6.1.8 Category J ..12 6.1.9 Category K ..12 6.2 Designation example ..13 Bibliography .14 iii IS02015-Allrights reserved BS ISO 10924-4:2015 IS010924-4:2015(E) Foreword /2016 Iso (the International Organization for Standardization) isa worldwidefederation of national standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out throughIsotechnical committees.Eachmemberbodyinterested ina subjectforwhicha technical committee has been established has the right to be represented on that committee. International se 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 electro