EN IEC 60269-1:2025

SLOVENSKI STANDARD
01-oktober-2025
Nizkonapetostne varovalke - 1. del: Splošne zahteve (IEC 60269-1:2024)
Low-voltage fuses - Part 1: General requirements (IEC 60269-1:2024)
Niederspannungssicherungen - Teil 1: Allgemeine Anforderungen (IEC 60269-1:2024)
Fusibles basse tension - Partie 1: Exigences générales (IEC 60269-1:2024)
Ta slovenski standard je istoveten z: EN IEC 60269-1:2025
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 60269-1

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2025
ICS 29.120.50 Supersedes EN 60269-1:2007; EN 60269-
1:2007/A1:2009; EN 60269-1:2007/A2:2014
English Version
Low-voltage fuses - Part 1: General requirements
(IEC 60269-1:2024)
Fusibles basse tension - Partie 1: Exigences générales Niederspannungssicherungen - Teil 1: Allgemeine
(IEC 60269-1:2024) Anforderungen
(IEC 60269-1:2024)
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 60269-1:2025 E

European foreword
The text of document 32B/748/FDIS, future edition 5 of IEC 60269-1, 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 60269-1:2025.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-04-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-04-30
document have to be withdrawn
This document supersedes EN 60269-1:2007 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.
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 60269-1:2024 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 60038:2009 NOTE Approved as EN 60038:2011
IEC 60127-2 NOTE Approved as EN 60127-2
IEC 60228:2023 NOTE Approved as EN IEC 60228:2024 (not modified)
IEC 60269-4 NOTE Approved as EN 60269-4
IEC 60269-6 NOTE Approved as EN 60269-6
IEC 60269-7 NOTE Approved as EN IEC 60269-7
IEC 60695-2-10 NOTE Approved as EN IEC 60695-2-10
IEC 60947-3 NOTE Approved as EN IEC 60947-3
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 60269-2 (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
IEC 60529 - Degrees of protection provided by enclosures EN 60529 -
(IP Code)
IEC 60584-1 2013 Thermocouples - Part 1: EMF specifications EN 60584-1 2013
and tolerances
IEC 60617 - Standard data element types with associated - -
classification scheme for electric components
- Part 4: IEC reference collection of standard
data element types and component classes
IEC 60664-1 1992 Insulation coordination for equipment within - -
low-voltage systems - Part 1: Principles,
requirements and tests
+ A1 2000 - -
+ A2 2002 - -
IEC 60269-1 ®
Edition 5.0 2024-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage fuses –
Part 1: General requirements
Fusibles basse tension –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-9108-5

– 2 – IEC 60269-1:2024 © IEC 2024
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
3.1 Fuses and their component parts . 10
3.2 General terms . 12
3.3 Characteristic quantities . 14
4 Conditions for operation in service . 17
4.1 General . 17
4.2 Ambient air temperature (T ) . 18
a
4.3 Altitude . 18
4.4 Atmospheric conditions . 18
4.5 Voltage . 18
4.6 Current . 18
4.7 Frequency, power factor and time constant . 18
4.7.1 Frequency . 18
4.7.2 Power factor . 19
4.7.3 Time constant (τ) . 19
4.8 Conditions of installation . 19
4.9 Utilization class . 19
4.10 Selectivity of fuse-links . 19
5 Classification . 19
6 Characteristics of fuses . 19
6.1 Summary of characteristics . 19
6.1.1 General . 19
6.1.2 Fuse-holders . 19
6.1.3 Fuse-links . 20
6.1.4 Complete fuses . 20
6.2 Rated voltage . 20
6.3 Rated current . 21
6.3.1 Rated current of the fuse-link . 21
6.3.2 Rated current of the fuse-holder . 21
6.4 Rated frequency (see 7.1 and 7.2) . 21
6.5 Rated power dissipation of a fuse-link and rated acceptable power
dissipation of a fuse-holder. . 21
6.6 Limits of time-current characteristics . 21
6.6.1 General . 21
6.6.2 Time-current characteristics, time-current zones . 21
6.6.3 Conventional times and currents . 22
6.6.4 Gates . 22
6.7 Breaking range and breaking capacity . 23
6.7.1 Breaking range and utilization category . 23
6.7.2 Rated breaking capacity . 24
6.8 Cut-off current and I t characteristics . 24
6.8.1 General . 24
6.8.2 Cut-off current characteristics . 24

IEC 60269-1:2024 © IEC 2024 – 3 –
6.8.3 I t characteristics . 24
7 Markings. 24
7.1 General . 24
7.2 Markings of fuse-holders . 25
7.3 Markings of fuse-links . 25
8 Standard conditions for construction . 25
8.1 Mechanical design . 25
8.1.1 Replacement of fuse-links . 25
8.1.2 Connections, including terminals . 25
8.1.3 Fuse-contacts . 26
8.1.4 Construction of a gauge-piece . 26
8.1.5 Mechanical strength of the fuse-link . 26
8.2 Insulating properties and suitability for isolation . 26
8.3 Temperature rise, power dissipation of the fuse-link and acceptable power
dissipation of a fuse-holder . 27
8.4 Operation . 27
8.5 Breaking capacity . 28
8.6 Cut-off current characteristic . 28
8.7 I t characteristics . 29
8.8 Overcurrent selectivity of fuse-links . 29
8.9 Protection against electric shock . 30
8.9.1 General . 30
8.9.2 Clearances and creepage distances . 30
8.9.3 Leakage currents of fuses suitable for isolation . 31
8.9.4 Additional constructional requirements for fuse holders for linked fuse-
carriers, suitable for isolation . 31
8.10 Resistance to heat . 32
8.11 Mechanical strength . 32
8.12 Resistance to corrosion . 32
8.12.1 General . 32
8.12.2 Resistance to rusting . 32
8.12.3 Resistance to season cracking . 32
8.13 Resistance to abnormal heat and fire . 32
8.14 Electromagnetic compatibility . 32
9 Tests . 32
9.1 Overview. 32
9.1.1 General . 32
9.1.2 Kind of tests . 33
9.1.3 Ambient air temperature (T ) . 33
a
9.1.4 Condition of the fuse . 33
9.1.5 Arrangement of the fuse and dimensions . 33
9.1.6 Testing of fuse-links . 33
9.1.7 Testing of fuse-holders . 37
9.2 Verification of the insulating properties and of the suitability for isolation . 38
9.2.1 Arrangement of the fuse-holder . 38
9.2.2 Verification of the insulating properties . 38
9.2.3 Verification of the suitability for isolation . 39
9.2.4 Acceptability of test results . 40

– 4 – IEC 60269-1:2024 © IEC 2024
9.3 Verification of temperature rise and power dissipation . 40
9.3.1 Arrangement of the fuse . 40
9.3.2 Measurement of the temperature rise . 41
9.3.3 Measurement of the power dissipation of the fuse-link . 41
9.3.4 Test method . 41
9.3.5 Acceptability of test results . 43
9.4 Verification of operation . 43
9.4.1 Arrangement of the fuse . 43
9.4.2 Ambient air temperature . 43
9.4.3 Test method and acceptability of test results . 43
9.5 Verification of the breaking capacity . 47
9.5.1 Arrangement of the fuse . 47
9.5.2 Characteristics of the test circuit . 47
9.5.3 Measuring instruments. 48
9.5.4 Calibration of test circuit . 48
9.5.5 Test method . 50
9.5.6 Ambient air temperature . 52
9.5.7 Interpretation of oscillograms . 52
9.5.8 Acceptability of test results . 52
9.6 Verification of the cut-off current characteristics . 53
9.6.1 Test method . 53
9.6.2 Acceptability of test results . 53
9.7 Verification of I t characteristics and overcurrent selectivity . 53
9.7.1 Test method . 53
9.7.2 Acceptability of test results . 53
9.7.3 Verification of compliance for fuse-links at 0,01 s . 53
9.7.4 Verification of overcurrent selectivity . 54
9.8 Verification of the degree of protection of enclosures . 54
9.9 Verification of resistance to heat . 54
9.10 Verification of non-deterioration of contacts . 54
9.10.1 General . 54
9.10.2 Arrangement of the fuse . 54
9.10.3 Test method . 54
9.10.4 Acceptability of test results . 54
9.11 Mechanical and miscellaneous tests . 55
9.11.1 Mechanical strength. 55
9.11.2 Miscellaneous tests . 55
9.12 Test of durability of markings . 58
Annex A (informative) Measurement of short-circuit power factor . 68
Annex B (informative) Calculation of pre-arcing I t values for "gG", "gM" and "gU"
fuse‑links and calculation of operating I t values at reduced voltage . 71
B.1 Evaluation of the pre-arcing I t value at 0,01 s . 71
B.2 Calculation of the value of pre-arcing I t under the conditions of test no. 2 . 71
B.3 Calculation of the value of operating I t at reduced voltage . 71
Annex C (informative) Calculation of cut-off current-time characteristic . 72
C.1 Overview. 72
C.2 Preliminary note . 72
C.3 Definition . 72

IEC 60269-1:2024 © IEC 2024 – 5 –
C.4 Characteristic. 72
C.5 Test condition . 73
C.6 Calculation from the measured values . 73
Annex D (informative) Effect of change of ambient temperature and surroundings on
the performance of fuse-links . 76
D.1 Effect of increase of ambient temperature . 76
D.1.1 On current rating . 76
D.1.2 On temperature rise . 76
D.1.3 On conventional fusing and non-fusing current (I and I ) . 76
f nf
D.1.4 For motor starting conditions . 76
D.2 Effect of decrease of ambient air temperature . 76
D.3 Effect of installation conditions. 76
Annex E (normative) Particular requirements for fuse-bases with screwless-type
terminals for external copper conductors. 77
E.1 General . 77
E.3 Terms and definitions . 77
E.7 Marking . 78
E.8 Standard conditions for construction . 78
E.8.1 Fixed connections including terminals . 78
E.8.2 Dimensions of connectable conductors . 78
E.8.3 Connectable cross-sectional areas . 79
E.8.4 Insertion and disconnecting of conductors . 79
E.8.5 Design and construction of terminals . 79
E.8.6 Resistance to ageing . 80
E.9 Tests . 80
E.9.1 Test of reliability of terminals . 80
E.9.2 Tests of reliability of terminals for external conductors: mechanical
strength . 80
E.9.3 Cycling test. 81
Bibliography . 84

Figure 1 – Diagram illustrating the means of verification of the time-current
characteristic, using the results of the tests at the "gate" currents (example) . 59
Figure 2 – Overload curve and time-current characteristic for "a" fuse-links . 60
Figure 3 – Time-current zone for aM fuses . 61
Figure 4 – General presentation of the cut-off characteristics for a series of AC
fuse‑links . 62
Figure 5 – Typical diagram of the circuit used for breaking capacity test (see 9.5) . 63
Figure 6 – Interpretation of oscillograms taken during the AC breaking-capacity tests
(see 9.5.7) . 64
Figure 7 – Interpretation of oscillograms taken during the DC breaking-capacity tests
(see 9.5.7) . 65
Figure 8 – Glow-wire and position of the thermocouple . 66
Figure 9 – Test apparatus (example) . 67
Figure A.1 – Determination of circuit-impedance for calculation of power factor in

accordance with method I . 70
Figure C.1 – Cut-off current characteristic as a function of actual pre-arcing time . 75
Figure E.1 – Connecting samples . 82

– 6 – IEC 60269-1:2024 © IEC 2024
Figure E.2 – Examples of terminals . 83

Table 1 – Standard values of AC rated voltages for fuses . 20
Table 2 – Preferred values of DC rated voltages for fuses . 20
Table 3 – Conventional time and current for "gG", and "gM" fuse-links . 22
a
Table 4 – Gates for specified pre-arcing times of "gG" and "gM" fuse-links . 23
Table 5 – Gates for "aM ' fuse-links (all rated currents) . 23
Table 6 – Temperature rise limits ∆T = (T – T ) for terminals . 27
a
Table 7 – Maximum arc voltage . 28
Table 8 – Pre-arcing I t values at 0,01 s for "gG" and "gM" fuse-links . 29
Table 9 – Rated impulse withstand voltage . 30
Table 10 – Minimum clearances in air . 30
Table 11 – Minimum creepage distances . 31
Table 12 – Survey of complete tests on fuse-links and number of fuse-links to be
tested . 35
Table 13 – Survey of tests on fuse-links of smallest rated current of homogeneous
series and number of fuse-links to be tested . 36
Table 14 – Survey of tests on fuse-links of rated currents between the largest and the
smallest rated current of a homogeneous series and number of fuse-links to be tested . 37
Table 15 – Survey of complete tests on fuse-holders and number of fuse-holders to be
tested . 37
Table 16 – Test voltage . 39
Table 17 – Test voltage across the poles for the verification of the suitability for
isolation . 40
Table 18 – Cross-sectional area of copper conductors for tests corresponding to
Subclauses 9.3 and 9.4. 42
Table 19 – Cross-section areas of the copper conductors for the test of "aM" fuses . 45
Table 20 – Table for test in Subclause 9.4.3.5 . 46
Table 21 – Values for breaking-capacity tests on AC fuses . 49
Table 22 – Values for breaking-capacity tests on DC fuses . 50
Table E.1 – Connectable conductors . 79
Table E.2 – Cross-sections of copper conductors connectable to terminals . 79
Table E.3 – Pull forces . 81

IEC 60269-1:2024 © IEC 2024 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE FUSES –
Part 1: General requirements
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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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
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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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60269-1 has been prepared by subcommittee 32B: Low-voltage fuses, of IEC technical
committee 32: Fuses. It is an International Standard.
This fifth edition cancels and replaces the fourth edition published in 2006, Amendment 1:2009
and Amendment 2:2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) New numbering, editorial corrections and normative references updated;
b) Term "discrimination" replaced by "selectivity" and "utilization category" by "utilization
class";
c) Term "fuses for authorized and unskilled persons" updated;
d) Replacement of fuse-link added;

– 8 – IEC 60269-1:2024 © IEC 2024
e) Standard values for AC and DC voltages updated;
f) Rated currents 425A, 355A, and 1 600A added;
g) Marking: requirements and tests separated to the relevant subclauses;
h) Requirements for temperature rise limited to terminal temperature rise only;
i) Graphic symbol for fuse-base updated,
The text of this International Standard is based on the following documents:
Draft Report on voting
32B/748/FDIS 32B/756/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
IEC 60269 consists of the following parts, under the general title Low-voltage fuses:
Part 1: General requirements
Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly
for industrial application) – Examples of standardized systems of fuses A to I
Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for
household or similar application) – Examples of standardized systems of fuses A to
F
Part 4: Supplementary requirements for fuse-links for the protection of semiconductor
devices
Part 5: Guidance for the application of low-voltage fuses
Part 6: Supplementary requirements for fuse-links for the protection of solar photovoltaic
energy systems
Part 7: Battery Fuses
For reasons of convenience, when a part of this publication has come from other publications,
a remark to this effect has been inserted in the text.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IEC 60269-1:2024 © IEC 2024 – 9 –
LOW-VOLTAGE FUSES –
Part 1: General requirements
1 Scope
This part of IEC 60269 is applicable to fuses incorporating enclosed current-limiting fuse-links
with rated breaking capacities of not less than 6 kA, intended for protecting power-frequency
AC circuits of nominal voltages not exceeding 1 000 V or DC circuits of nominal voltages not
exceeding 1 500 V.
Subsequent parts of this standard, referred to herein, cover supplementary requirements for
such fuses intended for specific conditions of use or applications.
Fuse-links intended to be included in fuse-switch combinations according to IEC 60947-3
should also comply with the following requirements.
As far as not stated in subsequent parts for fuse-links, details of performance (see 3.2.4) on
DC circuits should be stated in the manufacturer's literature.
NOTE 1 Modifications of, and supplements to, this document required for certain types of fuses for particular
applications – for example, certain fuses for rolling stock, or fuses for high-frequency circuits – will be covered, if
necessary, by separate standards.
NOTE 2 This document does not apply to miniature fuses, these being covered by IEC 60127.
The object of this standard series is to establish the characteristics of fuses or parts of fuses
(fuse-base, fuse-carrier, fuse-link) in such a way that they can be replaced by other fuses or
parts of fuses having the same characteristics provided that they are interchangeable as far as
their dimensions are concerned. For this purpose, this standard series refers in particular to
– the following characteristics of fuses:
• rated values;
• insulation;
• temperature rise in normal service;
• power dissipation and acceptable power dissipation;
• time/current characteristics;
• breaking capacity;
• cut-off current characteristics and their I t characteristics.
– type test for verification of the characteristics of fuses;
– the marking of fuses.
2 Normative references
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.
IEC 60269-2, Low-voltage fuses – Part 2: Supplementary requirements for fuses for use by
authorized persons (fuses mainly for industrial application) – Examples of standardized systems
of fuses A to K
– 10 – IEC 60269-1:2024 © IEC 2024
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 60584-1:2013, Thermocouples – Part 1: EMF specifications and tolerances
IEC 60617, Graphical symbols for diagrams
IEC 60664-1:2002, Insulation coordination for equipment within low-voltage supply systems –
Part 1: Principles, requirements and tests
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
NOTE For general definitions concerning fuses, see also IEC 60050-441.
3.1 Fuses and their component parts
3.1.1
fuse
device that by the fusing of one or more of its specially designed and proportioned components
opens the circuit in which it is inserted by breaking the current when this exceeds a given value
for a sufficient time. The fuse comprises all the parts that form the complete device
[SOURCE: IEC 60050-441:1984, 441-18-01]
3.1.2
fuse-holder
combination of the fuse-base with its fuse-carrier
Note 1 to entry: Where, in this document, the term "fuse-holder" is used, it covers fuse-bases and/or fuse-carriers,
if no clearer distinction is necessary.
[SOURCE: IEC 60050-441:1984, 441-18-14]
3.1.2.1
fuse-base (fuse-mount)
fixed part of a fuse provided with contacts and terminals
Note 1 to entry: Where applicable, covers are considered as part of the fuse-base.
[SOURCE: IEC 60050-441:1984, 441-18-02]
3.1.2.2
fuse-carrier
movable part of a fuse designed to carry a fuse-link
[SOURCE: IEC 60050-441:1984, 441-18-13]

IEC 60269-1:2024 © IEC 2024 – 11 –
3.1.3
fuse-link
part of a fuse including the fuse-element(s), intended to be replaced after the fuse h
...