SIST EN IEC 60127-9:2025
(Main)Miniature fuses - Part 9: Miniature fuse-links for special applications with partial-range breaking capacity (IEC 60127-9:2025)
Miniature fuses - Part 9: Miniature fuse-links for special applications with partial-range breaking capacity (IEC 60127-9:2025)
IEC 60127-9:2025 This part covers requirements for miniature fuse-links for special applications with partial-range breaking capacity. This document is applicable to fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 150 A and a rated breaking capacity not exceeding 50 kA.
Geräteschutzsicherungen – Teil 9: G-Sicherungseinsätze für besondere Anwendungen mit Teilbereichsausschaltvermögen (IEC 60127-9:2025)
Coupe-circuits miniatures - Partie 9: éléments de remplacement miniatures pour applications spéciales à pouvoir de coupure partiel (IEC 60127-9:2025)
IEC 60127-9:2025 La présente partie traite des exigences relatives aux éléments de remplacement miniatures pour applications spéciales à pouvoir de coupure partiel.
Le présent document s'applique aux éléments de remplacement avec une tension assignée qui ne dépasse pas 1 000 V, un courant assigné qui ne dépasse pas 150 A et un pouvoir de coupure assigné qui ne dépasse pas 50 kA.
Miniaturne varovalke - 9. del: Miniaturni taljivi vložki za posebne namene z delno izklopno zmogljivostjo (IEC 60127-9:2025)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Miniaturne varovalke - 9. del: Miniaturni taljivi vložki za posebne namene z delno
izklopno zmogljivostjo (IEC 60127-9:2025)
Miniature fuses - Part 9: Miniature fuse-links for special applications with partial-range
breaking capacity (IEC 60127-9:2025)
Geräteschutzsicherungen – Teil 9: G-Sicherungseinsätze für besondere Anwendungen
mit Teilbereichsausschaltvermögen (IEC 60127-9:2025)
Coupe-circuits miniatures - Partie 9: éléments de remplacement miniatures pour
applications spéciales à pouvoir de coupure partiel (IEC 60127-9:2025)
Ta slovenski standard je istoveten z: EN IEC 60127-9:2025
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 60127-9
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2025
ICS 29.120.50
English Version
Miniature fuses - Part 9: Miniature fuse-links for special
applications with partial-range breaking capacity
(IEC 60127-9:2025)
Coupe-circuits miniatures - Partie 9: Éléments de Geräteschutzsicherungen - Teil 9: G-Sicherungseinsätze für
remplacement miniatures pour applications spéciales à besondere Anwendungen mit
pouvoir de coupure partiel Teilbereichsausschaltvermögen
(IEC 60127-9:2025) (IEC 60127-9:2025)
This European Standard was approved by CENELEC on 2025-09-10. 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 60127-9:2025 E
European foreword
The text of document 32C/667/FDIS, future edition 1 of IEC 60127-9, prepared by SC 32C "Miniature
fuses" of IEC/TC 32 "Fuses" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN IEC 60127-9:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-10-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-10-31
document have to be withdrawn
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 is read in conjunction with EN IEC 60127-1:2024.
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 60127-9:2025 was approved by CENELEC as a European
Standard without any modification.
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 60068-2-21 2021 Environmental testing - Part 2-21: Tests - EN IEC 60068-2-21 2021
Test U: Robustness of terminations and
integral mounting devices
IEC 60127-1 2023 Miniature fuses - Part 1: Definitions for EN IEC 60127-1 2024
miniature fuses and general requirements
for miniature fuse-links
IEC 60127-6 2023 Miniature fuses - Part 6: Fuse-holders for EN IEC 60127-6 2024
miniature fuse-links
IEC 60664-1 2020 Insulation coordination for equipment EN IEC 60664-1 2020
within low-voltage supply systems - Part 1:
Principles, requirements and tests
IEC 60695-2-12 2021 Fire hazard testing - Part 2-12: EN IEC 60695-2-12 2021
Glowing/hot-wire based test methods -
Glow-wire flammability index (GWFI) test
method for materials
IEC 60695-2-13 2021 Fire hazard testing - Part 2-13: EN IEC 60695-2-13 2021
Glowing/hot-wire based test methods -
Glow-wire ignition temperature (GWIT) test
method for materials
IEC 60695-4 2021 Fire hazard testing - Part 4: Terminology EN IEC 60695-4 2021
concerning fire tests for electrotechnical
products
IEC 61249-2-7 2002 Materials for printed boards and other EN 61249-2-7 2002
interconnecting structures - Part 2-7:
Reinforced base materials clad and unclad
- Epoxide woven E-glass laminated sheet
of defined flammability (vertical burning
test), copper-clad
- - + AC 2005
ISO 3 1973 Preferred numbers - Series of preferred - -
numbers
IEC 60127-9 ®
Edition 1.0 2025-08
INTERNATIONAL
STANDARD
Miniature fuses -
Part 9: Miniature fuse-links for special applications with partial-range breaking
capacity
ICS 29.120.50 ISBN 978-2-8327-0615-2
IEC 60127-9:2025-08(en)
IEC 60127-9:2025 © IEC 2025
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirements. 8
5 Standard ratings . 8
6 Marking . 9
6.4 Colour coding for miniature fuse-links for special applications . 9
7 General notes on tests . 10
7.3 Type tests . 10
7.4 Fuse-bases for tests . 11
7.5 Nature of supply . 16
8 Dimensions and construction . 16
8.2 Construction. 16
8.3 Terminations . 17
9 Electrical requirements . 17
9.1 Voltage drop . 17
9.2 Time/current characteristic . 18
9.2.1 Time/current characteristic at normal ambient temperature . 18
9.2.2 Test at elevated temperature . 18
9.3 Breaking capacity . 18
9.3.2 Operating conditions . 18
9.3.3 Criteria for satisfactory performance . 20
9.3.5 Type test for fuse-links of homogenous series. 20
9.4 Endurance tests . 20
9.4.101 Endurance test at normal ambient temperature . 21
9.4.102 Test method A . 21
9.4.103 Test method B . 21
9.5 Maximum sustained dissipation . 21
9.6 Pulse tests . 21
9.7 Fuse-link temperature . 22
9.7.101 Fuse-links for use on printed circuit boards . 22
9.7.102 Fuse-links for use in fuse-holders . 22
101 Standard sheets . 29
101.1 Standard sheet 1 – Fuse-links for special applications . 29
Annex AA (normative) Guidance on ratings to be specified by the manufacturer or to
be agreed upon with the testing house . 32
Bibliography . 33
Figure 101 – Standard test board for fuse-links with wire terminations . 12
Figure 102 – Test board for surface mount fuse-links . 14
Figure 103 – Test fuse base . 15
Figure 104 – Test circuits for breaking capacity tests . 19
IEC 60127-9:2025 © IEC 2025
Table 101 – Copper track specifications for test board for surface mount fuse-links. 16
Table 102 – Power factor and time constant . 20
Table 103 – Testing schedule for individual ampere ratings for AC or DC breaking
capacity fuse-links . 23
Table 104 – Testing schedule for individual ampere ratings for AC and DC breaking
capacity fuse-links . 24
Table 105 – Testing schedule for maximum ampere rating of a homogeneous series
(AC or DC breaking capacity fuse-links) . 26
Table 106 – Testing schedule for maximum ampere rating of a homogeneous series
(AC and DC breaking capacity fuse-links) . 27
Table 107 – Testing schedule for minimum ampere rating of a homogeneous series. 28
Table 108 – Testing schedule for all intermediate ampere ratings of a homogeneous
series . 28
Table AA.1 – Guidance on ratings to be specified by the manufacturer or to be agreed
upon with the testing house . 32
IEC 60127-9:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Miniature fuses -
Part 9: Miniature fuse-links for special applications
with partial-range breaking capacity
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
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this pr
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