SIST EN IEC 60269-4:2025
(Amendment)Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devices
Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devices
These supplementary requirements apply to fuse-links for application in equipment containing semiconductor devices for circuits of nominal voltages up to 1 000 V AC. or 1 500 V DC. and also, in so far as they are applicable, for circuits of higher nominal voltages.
NOTE 1 Such fuse-Iinks are commonly referred to as "semiconductor fuse-links".
NOTE 2 In most cases, a part of the associated equipment serves the purpose of a fuse-base. Owing to the great variety of equipment, no general rules can be given; the suitability of the associated equipment to serve as a fuse- base should be subject to agreement between the manufacturer and the user. However, if separate fuse-bases or fuse-holders are used, they should comply with the appropriate requirements of IEC 60269-1.
NOTE 3 IEC 60269-6 (Low-voltage fuses – Part 6: Supplementary requirements for fuse-links for the protection of solar photovoltaic energy systems) is dedicated to the protection of solar photovoltaic energy systems.
NOTE 4 These fuse-links are intended for use on systems employing the standardized voltages and tolerances of IEC 60038. Tests carried out on fuse-links in accordance with previous editions of this standard shall remain valid until such time as complimentary equipment has evolved to the standardized voltages and tolerances of IEC 60038.
The object of these supplementary requirements is to establish the characteristics of semiconductor fuse-links in such a way that they can be replaced by other fuse-links having the same characteristics, provided that their dimensions are identical. For this purpose, this standard refers in particular to
a) the following characteristics of fuses:
1) their rated values;
2) their temperature rises in normal service;
3) their power dissipation;
4) their time-current characteristics;
5) their breaking capacity;
6) their cut-off current characteristics and their I2t characteristics;
7) their arc voltage characteristics;
b) type tests for verification of the characteristics of fuses;
c) the markings on fuses;
d) availability and presentation of technical data (see Annex BB).
Niederspannungssicherungen - Teil 4: Zusätzliche Anforderungen an Sicherungseinsätze zum Schutz von Halbleiter-Bauelementen
Fusibles basse tension - Partie 4: Exigences supplémentaires concernant les éléments de remplacement utilisés pour la protection des dispositifs à semiconducteurs
L'IEC 60269-4:2024 s'applique avec les exigences supplémentaires suivantes. Sauf indication contraire dans le texte qui suit, les éléments de remplacement utilisés pour la protection des dispositifs à semiconducteurs doivent satisfaire à l'ensemble des exigences de l'IEC 60269-1 ainsi qu'aux exigences supplémentaires ci-après. Les présentes exigences supplémentaires s'appliquent aux éléments de remplacement destinés à être associés à des matériels comportant des dispositifs à semiconducteurs et utilisés dans des circuits de tensions nominales inférieures ou égales à 1 000 V en courant alternatif ou à 1 500 V en courant continu. Pour certains éléments de remplacement, des tensions assignées supérieures peuvent être utilisées.
Nizkonapetostne varovalke - 4. del: Dodatne zahteve za taljive vložke za zaščito polprevodniških naprav
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Nizkonapetostne varovalke - 4. del: Dodatne zahteve za taljive vložke za zaščito
polprevodniških naprav
Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection
of semiconductor devices
Niederspannungssicherungen - Teil 4: Zusätzliche Anforderungen an
Sicherungseinsätze zum Schutz von Halbleiter-Bauelementen
Fusibles basse tension - Partie 4: Exigences supplémentaires concernant les éléments
de remplacement utilisés pour la protection des dispositifs à semiconducteurs
Ta slovenski standard je istoveten z: EN IEC 60269-4:2025
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60269-4
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2025
ICS 29.120.50 Supersedes EN 60269-4:2009; EN 60269-
4:2009/A1:2012; EN 60269-4:2009/A2:2016
English Version
Low-voltage fuses - Part 4: Supplementary requirements for
fuse-links for the protection of semiconductor devices
(IEC 60269-4:2024)
Fusibles basse tension - Partie 4: Exigences Niederspannungssicherungen - Teil 4: Zusätzliche
supplémentaires concernant les éléments de remplacement Anforderungen an Sicherungseinsätze zum Schutz von
utilisés pour la protection des dispositifs à semiconducteurs Halbleiter-Bauelementen
(IEC 60269-4:2024) (IEC 60269-4:2024)
This European Standard was approved by CENELEC on 2024-10-16. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60269-4:2025 E
European foreword
The text of document 32B/746/FDIS, future edition 6 of IEC 60269-4, prepared by SC 32B "Low-
voltage fuses" of IEC/TC 32 "Fuses" was submitted to the IEC-CENELEC parallel vote and approved
by CENELEC as EN IEC 60269-4:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-06-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-06-30
document have to be withdrawn
This document supersedes EN 60269-4:2009 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60269-4:2024 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60269-6:2010 NOTE Approved as EN 60269-6:2011 (not modified)
IEC 60269-6:2010/A1:2021 NOTE Approved as EN 60269-6:2011/A1:2023 (not modified)
IEC 60269-7:2021 NOTE Approved as EN IEC 60269-7:2024 (not modified)
IEC 60664-1:2020 NOTE Approved as EN IEC 60664-1:2020 (not modified)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60269-1 2024 Low-voltage fuses - Part 1: General EN IEC 60269-1 2025
requirements
IEC 60269-2 (mod) 2013 Low-voltage fuses - Part 2: Supplementary HD 60269-2 2013
requirements for fuses for use by authorized
persons (fuses mainly for industrial
application) - Examples of standardized
systems of fuses A to K
+ A1 2016 + A1 2022
+ A2 2024 + A2 2024
IEC/TR 60269-5 2014 Low-voltage fuses - Part 5: Guidance for the - -
application of low-voltage fuses
+ A1 2020 - -
IEC 60417 - Graphical symbols for use on equipment. - -
Index, survey and compilation of the single
sheets.
ISO 3 - Preferred numbers - Series of preferred - -
numbers
IEC 60269-4 ®
Edition 6.0 2024-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage fuses –
Part 4: Supplementary requirements for fuse-links for the protection of
semiconductor devices
Fusibles basse tension –
Partie 4: Exigences supplémentaires concernant les éléments de remplacement
utilisés pour la protection des dispositifs à semiconducteurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-8933-4
– 2 – IEC 60269-4:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Conditions for operation in service . 8
5 Classification . 9
6 Characteristics of fuses . 9
7 Markings. 13
8 Standard conditions for construction . 14
9 Tests . 14
Annex AA (informative) Guidance for the coordination of fuse-links with semiconductor
devices . 26
Annex BB (normative) Survey on information to be supplied by the manufacturer in his
literature (catalogue) or on request for a fuse designed for the protection of
semiconductor devices. 27
Annex CC (normative) Examples of standardized fuse-links for the protection of
semiconductor devices. 28
Bibliography . 45
Figure 101 – Example of a conventional test arrangement for bolted fuse-links . 24
Figure 102 – Example of a conventional test arrangement for blade contact fuse-links . 25
Figure CC.1 – Single body fuse-links . 29
Figure CC.2 – Double body fuse-links . 30
Figure CC.3 – Twin body fuse-links . 31
Figure CC.4 – Striker fuse-links . 31
Figure CC.5 – Fuse-links with bolted connections, type B, body sizes 000 and 00 . 33
Figure CC.6 – Fuse-links with bolted connections, type B, body sizes 0, 1, 2 and 3 . 34
Figure CC.7 – Bolted fuse-links, type C . 36
Figure CC.8 – Flush end fuse-links, type A . 38
Figure CC.9 – Flush end fuse-links, type B . 40
Figure CC.10 – Fuse-links with cylindrical contact caps, type A . 41
Figure CC.11 – Fuse-links with cylindrical contact caps, type B . 43
Figure CC.12 – Fuse-links with cylindrical contact caps with striker, type B (additional
dimensions for all sizes except 10 × 38) . 44
Table 101 – Conventional time and current for "gR" and "gS" fuse-links . 11
Table 102 – List of complete tests . 15
Table 103 – Survey of tests on fuse-links of the smallest rated current of a
homogeneous series . 16
Table 107 – Cross-sectional area of copper conductors for high current ratings tests . 17
Table 104 – Values for breaking-capacity tests on AC fuses . 20
Table 105 – Values for breaking-capacity tests on DC fuses . 21
Table 106 – Values for breaking-capacity tests on VSI fuse-links . 21
IEC 60269-4:2024 © IEC 2024 – 3 –
Table CC.1 – Typical rated voltages and preferred maximum rated currents . 42
– 4 – IEC 60269-4:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE FUSES –
Part 4: Supplementary requirements for fuse-links
for the protection of semiconductor devices
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any diver
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