ISO 10924-5:2016

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 10924-5
ISO/TC 22/SC 32
Road vehicles — Circuit breakers —
Secretariat: JISC
Voting begins
Part 5:
on: 2015-10-16
Circuit breakers with tabs with rated
Voting terminates
voltage of 450 V
on: 2015-12-16
Véhicules routiers — Coupe-circuits —
Partie 5: Coupe circuit moyen à pattes avec une tension nominale de 9
450 V
RECIPIENTS OF THIS DRAFT ARE INVITED TO
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OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 10924-5:2015(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
©
NATIONAL REGULATIONS. ISO 2015

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ISO/FDIS 10924-5:2015(E)

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© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved

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ISO/FDIS 10924-5:2015(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking, labelling and colour coding . 1
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 . 5
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 Current steps . 5
5.7 No current trip and reset temperature . 6
5.8 Absolute breaking capacity . 6
5.8.1 Tests . 6
5.8.2 Requirements . 6
5.9 Breaking capacity . 6
5.9.1 Tests . 6
5.9.2 Requirements . 6
5.10 Strength of terminals . 7
5.10.1 Tests . 7
5.10.2 Requirements . 7
5.11 Endurance . 7
5.11.1 Tests . 7
5.11.2 Requirements . 7
5.12 Dielectric strength. 7
5.12.1 Tests . 7
5.12.2 Requirement . 7
5.13 Pulse test . 7
5.13.1 Purpose . 7
5.13.2 Test . 8
5.13.3 Requirement . 8
6 Dimensions and designation example . 9
Bibliography .10
© ISO 2015 – All rights reserved iii

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ISO/FDIS 10924-5:2015(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 32, Electrical
and electronic components and general system aspects.
ISO 10924 consists of the following parts, under the general title Road vehicles — Circuit breakers:
— Part 1: Definitions and general test requirements
— Part 2: User’s guide
— Part 3: Miniat
...