ISO 10924-3:2015

INTERNATIONAL ISO
STANDARD 10924-3
First edition
2015-04-01
Road vehicles — Circuit breakers —
Part 3:
Miniature circuit breakers with tabs
(Blade type), Form CB11
Véhicules routier — Coupe circuites —
Partie 3: Coupe circuits miniatures avec languette (type languette),
Forme CB11
Reference number
ISO 10924-3:2015(E)
©
ISO 2015

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ISO 10924-3:2015(E)

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ii © ISO 2015 – All rights reserved

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ISO 10924-3:2015(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 . 4
5.4 Environmental conditions . 4
5.5 Operating time-rating . 4
5.5.1 Purpose . 4
5.5.2 Tests . 4
5.5.3 Requirements . 4
5.6 Current steps . 5
5.7 No current trip and reset temperature . 5
5.8 Absolute breaking capacity . 5
5.8.1 Tests . 5
5.8.2 Requirements . 5
5.9 Breaking capacity . 5
5.9.1 Tests . 5
5.9.2 Requirements . 6
5.10 Strength of terminals . 6
5.11 Endurance . 6
5.11.1 Tests . 6
5.11.2 Requirements . 6
5.12 Dielectric strength. 7
5.12.1 Tests . 7
5.12.2 Requirement . 7
6 Dimensions and designation examples . 7
6.1 Dimensions . 7
6.2 Designation examples . 7
6.2.1 Category B. 7
6.2.2 Category C . 8
6.2.3 Category D . 8
6.2.4 Category F and G . 9
6.2.5 Category H . 9
Bibliography .11
© ISO 2015 – All rights reserved iii

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ISO 10924-3:2015(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
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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 3, Electric
and electronic equipment.
ISO 10924 consists of the following parts, under the general title Road vehicles — Circuit breakers:
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