SIST EN 60127-7:2016

Miniature fuses - Part 7: Miniature fuse-links for special applications (IEC 60127-7:2015)

IEC 60127-7:2015(E) covers requirements for miniature fuse-links for special applications. This part of IEC 60127 is applicable to fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA. It does not apply to fuses completely covered by the subsequent parts of IEC 60269-1. It does not apply to miniature fuse-links for appliances intended to be used under special conditions, such as in corrosive or explosive atmospheres. This part of IEC 60127 applies in addition to the requirements of IEC 60127-1. Miniature fuse-links for special applications are not intended to be replaced by the end-user of an electrical/electronic appliance. The object of this part of IEC 60127 is to establish uniform test methods for miniature fuse-links for special applications, so as to allow verification of the values (for example melting time and breaking capacity values) specified by the manufacturer. This second edition cancels and replaces the first edition published in 2013. This edition includes the following significant technical changes with respect to the previous edition:
- defining a test board for surface mount fuse-links, Figure 2;
- defining test schedules for homogenous series.
This publication is to be read in conjunction with IEC 60127-1:2006.
Keywords: fuse-links with a rated voltage not exceeding 1 000 V, a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA.

Geräteschutzsicherungen - Teil 7: G-Sicherungseinsätze für besondere Anwendungen (IEC 60127-7:2015)

Coupe-circuit miniatures - Partie 7: Eléments de remplacement miniatures pour applications spéciales (IEC 60127-7:2015)

IEC 60127-7:2015 couvre des exigences pour des éléments de remplacement miniatures pour applications spéciales.
La présente partie de l'IEC 60127 est applicable aux éléments de remplacement de tension assignée ne dépassant pas 1 000 V, de courant assigné ne dépassant pas 20 A et de pouvoir de coupure assigné ne dépassant pas 50 kA.
Elle ne s'applique pas aux coupe-circuit complètement couverts par les autres parties de l'IEC 60269-1.
Elle n'est pas applicable aux éléments de remplacement miniatures placés dans des appareils destinés à être employés dans des conditions particulières, comme dans des atmosphères corrosives ou explosives.
La présente partie de l'IEC 60127 s'applique en complément des exigences de l'IEC 60127-1.
Les éléments de remplacement miniatures pour applications spéciales ne sont pas destinés à être remplacés par l'utilisateur final d'un appareil électronique ou électrique.
L’objet de la présente partie de l'IEC 60127 est d'établir des méthodes d'essai uniformes pour des éléments de remplacement miniatures pour applications spéciales, pour permettre de vérifier les valeurs (par exemple la durée de fusion et le pouvoir de coupure) spécifiées par le fabricant.
Cette deuxième édition annule et remplace la première édition, parue en 2013.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- définition d'une carte d'essai pour éléments de remplacement à montage en surface, Figure 2;
- définition des programmes d'essai pour les séries homogènes.
La présente Norme internationale doit être utilisée conjointement avec l'IEC 60127-1:2006
Mots clés: éléments de remplacement de tension assignée ne dépassant pas 1 000 V, courant assigné ne dépassant pas 20 A et de pouvoir de coupure assigné ne dépassant pas 50 kA.

Miniaturne varovalke - 7. del: Miniaturni taljivi vložki za posebne namene (IEC 60127-7:2015)

Ta del standarda IEC 60127 zajema zahteve za miniaturne taljive vložke za posebno uporabo. Ta del standarda IEC 60127 se uporablja za taljive vložke z nazivno napetostjo, ki ne presega 1000 V, nazivnim tokom, ki ne presega 20 A, in nazivno zmogljivostjo prekinitve, ki ne presega 50 kA. Ne uporablja se za varovalke, ki so v celoti obravnavane v nadaljnjih delih standarda IEC 60269-1. Ne uporablja se za miniaturne taljive vložke za aparate, namenjene za uporabo pod posebnimi pogoji, npr. v korozivni ali eksplozivni atmosferi.
Ta del standarda IEC 60127 se poleg tega uporablja za zahteve iz standarda IEC 60127-1. Za miniaturne taljive vložke za posebno uporabo ni predvideno, da jih zamenja končni uporabnik električnega/elektronskega aparata.
Namen tega dela standarda IEC 60127 je vzpostaviti enotne preskusne metode za miniaturne taljive vložke za posebno uporabo, tako da se omogoči preverjanje vrednosti (na primer čas taljenja in vrednosti zmogljivosti prekinitve), ki jih določi proizvajalec.

General Information

• Status: Published
• Publication Date: 16-Jun-2016
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• Technical Committee: EVA - Fuses
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-Jan-2016
• Due Date: 02-Apr-2016
• Completion Date: 17-Jun-2016
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Ref Project: EN 60127-7:2016 - Miniature fuses - Part 7: Miniature fuse-links for special applications

Relations

• Replaces: SIST EN 60127-7:2013 - Miniature fuses - Part 7: Miniature fuse-links for special applications (IEC 60127-7:2013)
• Effective Date: 26-Jan-2016
• Revised: oSIST prEN IEC 60127-7:2025 - Miniature fuses - Part 7: Miniature fuse-links for special applications
• Effective Date: 05-Dec-2023
• Revised: SIST EN 60127-7:2013 - Miniature fuses - Part 7: Miniature fuse-links for special applications (IEC 60127-7:2013)
• Effective Date: 11-Feb-2015

Overview

EN 60127-7:2016 (CLC adoption of IEC 60127-7:2015) specifies requirements and uniform test methods for miniature fuse-links for special applications. It applies in addition to IEC 60127-1 and covers fuse-links with a rated voltage ≤ 1 000 V, rated current ≤ 20 A and rated breaking capacity ≤ 50 kA. The part is intended for non-user-replaceable miniature fuses used in special application contexts, but excludes fuses already covered by other parts of IEC 60269-1 and fuses for appliances used in corrosive or explosive atmospheres.

Key topics and technical requirements

• Scope and limits: clear rating boundaries (≤ 1 000 V, ≤ 20 A, ≤ 50 kA) and exclusions for explosive/corrosive atmospheres.
• Test methods: establishes uniform tests to verify manufacturer values such as melting time and breaking capacity.
• Construction and dimensions: complements general requirements of IEC 60127-1 with specific construction and dimension considerations for special-application fuse-links.
• Electrical requirements and test circuits: includes breaking capacity test circuits and schedules for both a.c. and d.c. conditions.
• Surface-mount testing: introduces a defined test board for surface-mount fuse-links (Figure 2) to standardize SMT testing.
• Homogeneous series testing: defines test schedules for homogeneous series, reducing testing burden while ensuring representative verification across series.
• Marking, ratings and documentation: guidance on manufacturer-specified ratings and information to be agreed with test houses.
• Safety and environmental tests: references related environmental, insulation coordination and fire-hazard test standards used as normative references.

Applications and practical value

• Ensures consistent verification of performance for miniature fuses used inside consumer electronics, industrial controls, power supplies and other electrical/electronic equipment where fuses are not intended to be replaced by the end-user.
• Helps manufacturers demonstrate product compliance, supports type approval and safety assessments, and guides design decisions for components with specified melting and breaking performance.
• Enables test laboratories and certification bodies to apply harmonized procedures when assessing breaking capacity, melting time and endurance for special application fuse-links.

Who should use this standard

• Fuse and component manufacturers
• Product designers and electrical engineers specifying protective components
• Test laboratories, certification and compliance bodies (CE/LVD context)
• Procurement and quality managers requiring evidence of rated performance

Related standards

Read in conjunction with IEC/EN 60127-1 (general requirements) and related parts such as IEC 60127-4, IEC 60127-6, plus normative references used for environmental, insulation and fire testing (e.g., IEC 60068-2-21, IEC 60664-1, IEC 60695-2-12/13).

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2016
1DGRPHãþD
SIST EN 60127-7:2013
Miniaturne varovalke - 7. del: Miniaturni taljivi vložki za posebne namene (IEC
60127-7:2015)
Miniature fuses - Part 7: Miniature fuse-links for special applications (IEC 60127-7:2015)
Geräteschutzsicherungen - Teil 7: G-Sicherungseinsätze für besondere Anwendungen
(IEC 60127-7:2015)
Coupe-circuit miniatures - Partie 7: Eléments de remplacement miniatures pour
applications spéciales (IEC 60127-7:2015)
Ta slovenski standard je istoveten z: EN 60127-7:2016
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60127-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2016
ICS 29.120.50 Supersedes EN 60127-7:2013
English Version
Miniature fuses - Part 7: Miniature fuse-links for special
applications
(IEC 60127-7:2015)
Coupe-circuit miniatures - Partie 7: Eléments de Geräteschutzsicherungen - Teil 7: G-Sicherungseinsätze für
remplacement miniatures pour applications spéciales besondere Anwendungen
(IEC 60127-7:2015) (IEC 60127-7:2015)
This European Standard was approved by CENELEC on 2015-10-27. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60127-7:2016 E
European foreword
The text of document 32C/507/CDV, future edition 2 of IEC 60127-7, 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 60127-7:2016.
The following dates are fixed:
(dop) 2016-07-27
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-10-27
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60127-7:2013.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment
Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).

Endorsement notice
The text of the International Standard IEC 60127-7:2015 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 standards
indicated:
IEC 6269-1:2006 NOTE Harmonized as EN 6269-1:2006.
IEC 6269-1:2006/AMD1:2009 NOTE Harmonized as EN 6269-1:2006/AMD1:2009.
IEC 6269-1:2006/AMD2:2014 NOTE Harmonized as EN 6269-1:2006/AMD1:2014.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When 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.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-21 2006 Environmental testing -- Part 2-21: Tests - EN 60068-2-21 2006
Test U: Robustness of terminations and
integral mounting devices
IEC 60127-1 2006 Miniature fuses -- Part 1: Definitions for EN 60127-1 2006
miniature fuses and general requirements
for miniature fuse-links
+ A1 2011  + A1 2011
+ A2 2015  + A2 2015
IEC 60127-4 2005 Miniature fuses -- Part 4: Universal EN 60127-4 2005
modular fuse-links (UMF) - Through-hole
and surface mount types
+ A1 2008  + A1 2009
+ A2 2012  + A2 2013
IEC 60127-6 2014 Miniature fuses - Part 6: Fuse-holders for EN 60127-6 2014
miniature fuse-links
IEC 60664-1 2007 Insulation coordination for equipment EN 60664-1 2007
within low-voltage systems -- Part 1:
Principles, requirements and tests
IEC 60695-2-12 2010 Fire hazard testing -- Part 2-12: EN 60695-2-12 2010
Glowing/hot-wire based test methods -
Glow-wire flammability index (GWFI) test
method for materials
+ A1 2014  + A1 2014
IEC 60695-2-13 2010 Fire hazard testing -- Part 2-13: EN 60695-2-13 2010
Glowing/hot-wire based test methods -
Glow-wire ignition temperature (GWIT) test
method for materials
+ A1 2014  + A1 2014
IEC 60695-4 2012 Fire hazard testing -- Part 4: Terminology EN 60695-4 2012
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
- -  + corrigendum Sep. 2005
ISO 3 1973 Preferred numbers; Series of preferred - -
numbers
IEC 60127-7 ®
Edition 2.0 2015-09
INTERNATIONAL
STANDARD
Miniature fuses –
Part 7: Miniature fuse-links for special applications

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.50 ISBN 978-2-8322-2913-2

– 2 – IEC 60127-7:2015 © IEC 2015
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 . 8
7 General notes on tests . 9
8 Dimensions and construction . 14
9 Electrical requirements . 15
10 Standard sheets . 25
Annex A (informative) Guidance on ratings to be specified by the manufacturer or to
be agreed upon with the testing house . 28
Bibliography . 29

Figure 1 – Standard test board for fuse-links with wire terminations . 11
Figure 2 – Test board for surface mount fuse-links . 12
Figure 3 – Test fuse base . 13
Figure 4 – Test circuits for breaking capacity tests . 16

Table 1 – Power factor and time constant . 17
Table 2 – Testing schedule for individual ampere ratings for a.c. or d.c. breaking
capacity fuse-links . 20
Table 3 – Testing schedule for individual ampere ratings for a.c. and d.c. breaking
capacity fuse-links . 21
Table 4 – Testing schedule for maximum ampere rating of a homogeneous series (a.c.
or d.c. breaking capacity fuse-links) . 22
Table 5 – Testing schedule for maximum ampere rating of a homogeneous series (a.c.
and d.c. breaking capacity fuse-links) . 23
Table 6 – Testing schedule for minimum ampere rating of a homogeneous series. 24
Table 7 – Testing schedule for all intermediate ampere ratings of a homogeneous

series. 24
Table A.1 – Guidance on ratings to be specified by the manufacturer or to be agreed
upon with the testing house . 28

IEC 60127-7:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MINIATURE FUSES –
Part 7: Miniature fuse-links for special applications

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 preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
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 divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60127-7 has been prepared by subcommittee 32C: Miniature fuses,
of IEC technical committee 32: Fuses.
This second edition cancels and replaces the first edition published in 2013.
This edition includes the following significant technical changes with respect to the previous
edition:
a) defining a test board for surface mount fuse-links, Figure 2;
b) defining test schedules for homogenous series.

– 4 – IEC 60127-7:2015 © IEC 2015
The text of this standard is based on the following documents:
CDV Report on voting
32C/507/CDV 32C/513/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 60127 series, published under the general title Miniature fuses,
can be found on the IEC website.
This International Standard is to be used in conjunction with IEC 60127-1:2006, Miniature
fuses – Part 1: Definitions for miniature fuses and general requirements for miniature fuse-
links and its Amendment 1 (2011).
The clauses of this standard supplement, modify or replace the corresponding clauses in
IEC 60127-1.
Where there is no corresponding clause or subclause in this standard, the clause or
subclause of IEC 60127-1 applies without modification as far as is reasonable. When this
standard states “addition” or “replacement”, the relevant text in IEC 60127-1 is to be adapted
accordingly.
Subclauses which are additional to those in Part 1 are numbered starting from 101. Additional
annexes are numbered AA, BB, etc.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IEC 60127-7:2015 © IEC 2015 – 5 –
INTRODUCTION
According to the wish expressed by the users of miniature fuses, all standards,
recommendations and other documents relating to miniature fuses should have the same
publication number in order to facilitate reference to fuses in other specifications, for example,
equipment specifications.
Furthermore, a single publication number and subdivision into parts would facilitate the
establishment of new standards, because clauses containing general requirements need not
be repeated.
The IEC 60127 series, under the general heading Miniature fuses, is thus subdivided as
follows:
IEC 60127-1, Miniature fuses – Part 1: Definitions for miniature fuses and general
requirements for miniature fuse-links
IEC 60127-2, Miniature fuses – Part 2: Cartridge fuse-links
IEC 60127-3, Miniature fuses – Part 3: Sub-miniature fuse-links
IEC 60127-4, Miniature fuses – Part 4: Universal modular fuse-links (UMF) – Through-hole
and surface mount types
IEC 60127-5, Miniature fuses – Part 5: Guidelines for quality assessment of miniature fuse-
links
IEC 60127-6, Miniature fuses – Part 6: Fuse-holders for miniature fuse-links
IEC 60127-7, Miniature fuses – Part 7: Miniature fuse-links for special applications
IEC 60127-8, (Free for further documents)
IEC 60127-9, (Free for further documents)
IEC 60127-10, Miniature fuses – Part 10: User guide for miniature fuses

– 6 – IEC 60127-7:2015 © IEC 2015
MINIATURE FUSES –
Part 7: Miniature fuse-links for special applications

1 Scope
This part of IEC 60127 covers requirements for miniature fuse-links for special applications.
This part of IEC 60127 is applicable to fuse-links with a rated voltage not exceeding 1 000 V,
a rated current not exceeding 20 A and a rated breaking capacity not exceeding 50 kA.
It does not apply to fuses completely covered by the subsequent parts of IEC 60269-1.
It does not apply to miniature fuse-links for appliances intended to be used under special
conditions, such as in corrosive or explosive atmospheres.
This part of IEC 60127 applies in addition to the requirements of IEC 60127-1.
Miniature fuse-links for special applications are not intended to be replaced by the end-user of
an electrical / electronic appliance.
The object of this part of IEC 60127 is to establish uniform test methods for miniature fuse-
links for special applications, so as to allow verification of the values (for example melting
time and breaking capacity values) specified by the manufacturer.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60068-2-21:2006, Environmental testing – Part 2-21: Tests – Test U: Robustness of
terminations and integral mounting devices
IEC 60127-1:2006, Miniature fuses – Part 1: Definitions for miniature fuses and general
requirements for miniature fuse-links
IEC 60127-1:2006/AMD1:2011
IEC 60127-1:2006/AMD2:2015
IEC 60127-4:2005, Miniature fuses – Part 4: Universal modular fuse-links (UMF) – Through-
hole and surface mount types
IEC 60127-4:2005/AMD1:2008
IEC 60127-4:2005/AMD2:2012
IEC 60127-6:2014, Miniature fuses – Part 6: Fuse-holders for miniature fuse-links
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests

IEC 60127-7:2015 © IEC 2015 – 7 –
IEC 60695-2-12:2010, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials
IEC 60695-2-12:2010/AMD1:2014
IEC 60695-2-13:2010, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods –
Glow-wire ignition temperature (GWIT) test method for materials
IEC 60695-2-13:2010/AMD1:2014
IEC 60695-4:2012, Fire hazard testing – Part 4: Terminology concerning fire tests for
electrotechnical products
IEC 61249-2-7:2002, Materials for printed boards and other 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
ISO 3:1973, Preferred numbers – Series of preferred numbers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in Clause 3 of IEC 60127-
1:2006, except 3.5, as well as the following apply.
3.1
miniature fuse-link for special applications
enclosed fuse-link which is not covered in IEC 60127-2, IEC 60127-3 or IEC 60127-4 and of
rated breaking capacity not exceeding 50 kA, with a width and height not exceeding 12 mm
and a length not exceeding 50 mm
Note 1 to entry: Special precautions may be necessary to ensure that the fuse-links will be replaced by a fuse-link
with the same technical parameters.
Note 2 to entry: For fuse-links having a metallic cap at each end, any member of terminals or terminations other
than the metallic cap such as wire terminations, pins and bolt-in contacts may not be included in the total length of
50 mm and the width and height of 12 mm.
3.2
t to t
1 8
limit values for time/current characteristic
3.3
I
test current for testing at elevated temperature of 70 °C
Note 1 to entry: Preferred values are 0,8 I or 1,0 I or 1,1 I .
N N N
3.4
I (A)
test
test current for endurance testing according to method A
Note 1 to entry: Preferred values are 1,0 I or 1,05 I or 1,2 I .
N N N
3.5
I (B)
test
test current for endurance testing according to method B
Note 1 to entry: Preferred values are 0,8 I or 1,0 I .
N N
3.6
I (A)
OVL
test current for measuring the maximum sustained dissipation according to method A

– 8 – IEC 60127-7:2015 © IEC 2015
Note 1 to entry: Preferred values are 1,25 I or 1,35 I or 1,5 I .
N N N
3.7
I (B)
OVL
test current for measuring the maximum sustained dissipation according to method B
Note 1 to entry: Preferred values are 1,0 I or 1,25 I .
N N
4 General requirements
Clause 4 of IEC 60127-1:2006 applies.
5 Standard ratings
Clause 5 of IEC 60127-1:2006 does not apply.
Replacement:
The following ratings shall be agreed upon between the testing house and the manufacturer:
– rated voltage;
– rated current (see standard sheet 1 for preferred ratings);
– rated breaking capacity (a.c. and/or d.c.);
– time/current characteristic (at least at 2,0 I or 2,1 I and 10 I ).
N N N
The following may be agreed upon on an optional basis:
– test at elevated temperature;
– time/current characteristic (additionally at 2,75 I and 4 I ).
N N
Any additional specified values are given in standard sheet 1.
6 Marking
Clause 6 of IEC 60127-1:2006 applies except as follows.
6.1
Replacement:
d) Not applicable.
NOTE A symbol denoting the time/current characteristic cannot be stated, because this part of IEC 60127 does
not specify any values for this parameter.
Addition:
e) Type designation.
f) Rated breaking capacity in amperes (A) or in kilo amperes (kA).
6.2
Deletion of NOTE 2.
6.3
Addition after first paragraph:

IEC 60127-7:2015 © IEC 2015 – 9 –
Furthermore the rated breaking capacity in amperes (A) or in kilo amperes (kA) shall be
marked on the package label.
6.4
Addition of heading title and replacement of text:
6.4 Colour coding for miniature fuse-links for special applications
Marking of fuse-links by means of colour bands according to IEC 60127-1:2006, Annex A, is
not permitted. It is, however, possible to use colour markings that clearly differ from this
colour band system. In this case, the manufacturer shall provide the relevant information, for
example colour key.
Additional subclause:
6.101 Where marking is impracticable due to space limitations, the relevant information
should appear on the smallest package and in the manufacturer’s technical literature.
7 General notes on tests
Clause 7 of IEC 60127-1:2006 applies except as follows.
7.2 Type tests
7.2.1
Replacement:
For testing the individual current ratings of fuses with a.c. or d.c. breaking capacity, the
number of fuse-links required is 51, of which 12 are kept as spares. For fuse-links with wire
terminations six extra samples (E1 to E6) have to be taken by random and not sorted
according to voltage drop. If necessary, these samples can be used as additional spares after
performing the tests according to 8.3.
The testing schedule is shown in Table 2.
For testing the individual current ratings of fuses with a.c. and d.c. breaking capacity, the
number of fuse-links required is 63, of which 9 are kept as spares. For fuse-links with wire
terminations six extra samples (E1 to E6) have to be taken by random and not sorted
according to voltage drop. If necessary, these samples can be used as additional spares after
performing the tests according to 8.3.The testing schedule is shown in Table 3.
For testing the maximum ampere rating of a homogenous series with a.c. or d.c. breaking
capacity the number of fuse-links required is 51, of which 22 are kept as spares. For fuse-
links with wire terminations six extra samples (E1 to E6) have to be taken by random and not
sorted according to voltage drop. If necessary, these samples can be used as additional
spares after performing the tests according to 8.3.
The testing schedule is shown in Table 4.
For testing the maximum ampere rating of a homogenous series with a.c. and d.c. breaking
capacity the number of fuse-links required is 66, of which 32 are kept as spares. For fuse-
links with wire terminations six extra samples (E1 to E6) have to be taken by random and not
sorted according to voltage drop. If necessary, these samples can be used as additional
spares after performing the tests according to 8.3.

– 10 – IEC 60127-7:2015 © IEC 2015
The testing schedule is shown in Table 5.
For testing the minimum ampere rating of a homogenous series with a.c. and / or d.c.
breaking capacity the number of fuse-links required is 38, of which 16 are kept as spares.
The testing schedule is shown in Table 6.
For testing all of the intermediate ampere rating of a homogenous series with a.c. and / or d.c.
breaking capacity the number of fuse-links required is 38, of which 16 are kept as spares.
The testing schedule is shown in Table 7.
7.3 Fuse-bases for tests
Addition after first paragraph:
For fuse-links designed for use in a special type of fuse-holder, testing shall be performed in
that fuse-holder.
For tests that require a printed circuit board for mounting and connection of the fuse-links, a
test board according to Figure 1 or Figure 2 shall be used.
The test board according to Figure 1 shall be used for fuse links with wire terminations
...