SIST EN IEC 60269-3:2025
(Main)Low-voltage fuses - Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar applications) - Examples of standardized systems of fuses A to F
Low-voltage fuses - Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar applications) - Examples of standardized systems of fuses A to F
IEC 60269-3:2024 is divided into four fuse systems, each dealing with a specific example of standardized fuses for use by unskilled persons. This part applies to “gG” fuses only. Unskilled persons do not have technical knowledge or sufficient experience. To avoid dangers, which electricity may create, the relevant part of the fuse standard shall provide requirements for maximum safety in service. IEC 60269-3 provides four systems for use by unskilled persons. Instructions for the safe operation of fuse-links are provided in the manufacturer’s literature. All systems provide their own mechanical solution to avoid the use of a fuse-link with higher current rating (non-interchangeability) whereas the protection of cables and lines is ensured. The applicant is required to take care to replace a fuse-link by the same type.
Niederspannungssicherungen - Teil 3: Ergänzende Anforderungen an Sicherungen zur Betätigung durch Laien (Sicherungen vorwiegend für den Hausgebrauch und ähnliche Anwendungen) - Beispiele für genormte Sicherungssysteme A bis F
Fusibles basse tension - Partie 3: Exigences supplémentaires pour les fusibles destinés à être utilisés par des personnes non qualifiées (fusibles pour usages essentiellement domestiques et analogues) - Exemples de systèmes de fusibles normalisés A à F
L'IEC 60269-3:2024 est divisée en quatre systèmes de fusibles traitant chacun d'un exemple spécifique de fusible normalisé destiné à être utilisés par des personnes non qualifiées. La présente partie s'applique uniquement aux fusibles "gG". Les personnes non qualifiées ne disposent pas des connaissances techniques ou d'une expérience suffisante. Pour éviter les dangers que l'électricité peut présenter, la partie de la norme relative aux fusibles doit fournir des exigences pour une sécurité maximale en service. L'IEC 60269-3 définit quatre systèmes destinés à être utilisés par des personnes non qualifiées. Des instructions permettant le fonctionnement en toute sécurité des éléments de remplacement sont fournies dans la documentation du fabricant. Tous les systèmes fournissent leur propre solution mécanique pour éviter l'utilisation d'un élément de remplacement avec un courant assigné supérieur (non-interchangeabilité) tandis que la protection des câbles et des lignes est assurée. Le demandeur doit veiller à remplacer un élément de remplacement par un autre du même type.
Nizkonapetostne varovalke - 3. del: Dodatne zahteve za varovalke, ki jih uporabljajo nestrokovne osebe (uporaba varovalk zlasti v gospodinjstvu in podobnih okoljih) - Primeri standardiziranih sistemov varovalk od A do F
Ta del standarda IEC 60269 je razdeljen na štiri sisteme varovalk, pri čemer vsak obravnava določen primer standardiziranih varovalk, ki jih uporabljajo nestrokovne osebe.
Ta del se uporablja samo za varovalke »gG«.
Nestrokovne osebe nimajo tehničnega znanja ali dovolj izkušenj. Za preprečevanje nevarnosti, ki jih lahko povzroči elektrika, mora ustrezni del standarda za varovalke vsebovati zahteve za največjo varnost med uporabo. V standardu IEC 60269-3 so podani štirje sistemi, ki jih uporabljajo nestrokovne osebe.
Navodila za varno uporabo taljivih vložkov so navedena v dokumentaciji proizvajalca.
Vsi sistemi imajo lastno mehansko rešitev, ki preprečuje uporabo taljivega vložka z večjim nazivnim tokom (nezamenljivost) ter obenem zagotavlja zaščito kablov in vodov.
Uporabnik mora taljivi vložek zamenjati z vložkom istega tipa.
General Information
Relations
Overview
EN IEC 60269-3:2025 - "Low-voltage fuses - Part 3" specifies supplementary requirements for low-voltage fuses for operation by unskilled persons (fuses mainly for household and similar applications). This part applies to gG fuses and gives examples of standardized fuse systems (A to F), including specific system descriptions such as the D-type (system A) and cylindrical NF system (system B). It is intended to ensure maximum safety in service and to prevent misuse by users without technical training.
Key topics
- Scope and applicability: Focus on gG (general purpose) low-voltage fuses designed for household and similar environments where users are not electrically skilled.
- Standardized fuse systems: Examples of mechanical and dimensional systems (A–F) with rules to avoid interchangeability of higher-rated fuse-links.
- Safety requirements: Measures to reduce danger from electricity in service, including mechanical non-interchangeability and manufacturer instructions requiring replacement by the same fuse type.
- Construction and markings: Requirements for fuse-links, fuse-carriers, fuse-bases and gauge-pieces, including marking and identification for safe use.
- Electrical characteristics: Time–current characteristics, conventional times and currents, I²t (I t) values, breaking range and rated breaking capacity to ensure protection of conductors and correct operation.
- Thermal and insulation tests: Verification of temperature rise, power dissipation, insulating properties and suitability for isolation.
- Mechanical and environmental tests: Mechanical strength, resistance to heat, contact non-deterioration and other service verifications required for safe household use.
- Testing and verification: Detailed test arrangements and acceptability criteria for all key properties (insulation, temperature, breaking tests, discrimination and more).
Applications and who uses it
- Fuse manufacturers - reference for design, testing and marking of fuses and fuse-holders intended for household use.
- Switchboard and distribution-board designers - ensures compatibility with distribution boards and prevents unsafe fuse replacements by unskilled users.
- Electrical installers and OEMs - guidance for selecting standardized fuses for consumer products and domestic installations.
- Testing laboratories and certification bodies - test methods and acceptance criteria for compliance and safety certification.
- Regulators and safety authorities - benchmark for national implementation and consumer protection.
Related standards
- EN IEC 60269-1:2025 (general requirements for low-voltage fuses) - read in conjunction with this part.
- IEC/EN references cited in the standard include IEC 60529, IEC 60269-6, IEC 60898-1, IEC 61439-3, and insulation/connector standards used for verification.
This standard helps maintain safe, non-confusing fuse systems in household installations by combining mechanical safeguards, clear markings and rigorous test requirements for low-voltage gG fuses.
Frequently Asked Questions
SIST EN IEC 60269-3:2025 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Low-voltage fuses - Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar applications) - Examples of standardized systems of fuses A to F". This standard covers: IEC 60269-3:2024 is divided into four fuse systems, each dealing with a specific example of standardized fuses for use by unskilled persons. This part applies to “gG” fuses only. Unskilled persons do not have technical knowledge or sufficient experience. To avoid dangers, which electricity may create, the relevant part of the fuse standard shall provide requirements for maximum safety in service. IEC 60269-3 provides four systems for use by unskilled persons. Instructions for the safe operation of fuse-links are provided in the manufacturer’s literature. All systems provide their own mechanical solution to avoid the use of a fuse-link with higher current rating (non-interchangeability) whereas the protection of cables and lines is ensured. The applicant is required to take care to replace a fuse-link by the same type.
IEC 60269-3:2024 is divided into four fuse systems, each dealing with a specific example of standardized fuses for use by unskilled persons. This part applies to “gG” fuses only. Unskilled persons do not have technical knowledge or sufficient experience. To avoid dangers, which electricity may create, the relevant part of the fuse standard shall provide requirements for maximum safety in service. IEC 60269-3 provides four systems for use by unskilled persons. Instructions for the safe operation of fuse-links are provided in the manufacturer’s literature. All systems provide their own mechanical solution to avoid the use of a fuse-link with higher current rating (non-interchangeability) whereas the protection of cables and lines is ensured. The applicant is required to take care to replace a fuse-link by the same type.
SIST EN IEC 60269-3:2025 is classified under the following ICS (International Classification for Standards) categories: 29.120.50 - Fuses and other overcurrent protection devices. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN IEC 60269-3:2025 has the following relationships with other standards: It is inter standard links to SIST HD 60269-3:2010/A1:2013, SIST HD 60269-3:2010, SIST HD 60269-3:2010/A2:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 60269-3:2025 is associated with the following European legislation: EU Directives/Regulations: 2014/35/EU; Standardization Mandates: M/511. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase SIST EN IEC 60269-3:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Nizkonapetostne varovalke - 3. del: Dodatne zahteve za varovalke, ki jih
uporabljajo nestrokovne osebe (uporaba varovalk zlasti v gospodinjstvu in
podobnih okoljih) - Primeri standardiziranih sistemov varovalk od A do F
Low-voltage fuses - Part 3: Supplementary requirements for fuses for use by unskilled
persons (fuses mainly for household or similar applications) - Examples of standardized
systems of fuses A to F
Niederspannungssicherungen - Teil 3: Ergänzende Anforderungen an Sicherungen zur
Betätigung durch Laien (Sicherungen vorwiegend für den Hausgebrauch und ähnliche
Anwendungen) - Beispiele für genormte Sicherungssysteme A bis F
Fusibles basse tension - Partie 3: Exigences supplémentaires pour les fusibles destinés
à être utilisés par des personnes non qualifiées (fusibles pour usages essentiellement
domestiques et analogues) - Exemples de systèmes de fusibles normalisés A à F
Ta slovenski standard je istoveten z: EN IEC 60269-3:2025
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 60269-3
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2025
ICS 29.120.50 Supersedes HD 60269-3:2010; HD 60269-
3:2010/A1:2013; HD 60269-3:2010/A2:2022
English Version
Low-voltage fuses - Part 3: Supplementary requirements for
fuses for operation by unskilled persons (fuses mainly for
household and similar applications) - Examples of standardized
systems of fuses A to F
(IEC 60269-3:2024)
Fusibles basse tension - Partie 3: Exigences Niederspannungssicherungen - Teil 3: Ergänzende
supplémentaires pour les fusibles destinés à être utilisés Anforderungen an Sicherungen zur Betätigung durch Laien
par des personnes non qualifiées (fusibles pour usages (Sicherungen vorwiegend für den Hausgebrauch und
essentiellement domestiques et analogues) - Exemples de ähnliche Anwendungen) - Beispiele für genormte
systèmes de fusibles normalisés A à F Sicherungssysteme A bis F
(IEC 60269-3:2024) (IEC 60269-3:2024)
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 60269-3:2025 E
European foreword
The text of document 32B/745/FDIS, future edition 5 of IEC 60269-3, 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 60269-3:2025.
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 HD 60269-3:2010 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 is read in conjunction with EN IEC 60269-1:2025.
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 60269-3:2024 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 60529 NOTE Approved as EN 60529
IEC 60269-6 NOTE Approved as EN 60269-6
ISO 228-1 NOTE Approved as EN ISO 228-1
ISO 228-2 NOTE Approved as EN ISO 228-2
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 60068-2-31 - Environmental testing - Part 2-31: Tests - EN 60068-2-31 -
Test Ec: Rough handling shocks, primarily
for equipment-type specimens
IEC 60269-1 2024 Low-voltage fuses - Part 1: General EN IEC 60269-1 2025
requirements
IEC 60664 series Insulation coordination for equipment within EN IEC 60664 series
low-voltage supply systems
IEC 60898-1 (mod) 2015 Electrical accessories - Circuit-breakers for EN 60898-1 2019
overcurrent protection for household and
similar installations - Part 1: Circuit-
breakers for a.c. operation
- - + A11 2024
+ AMD1 2019 + A1 2024
IEC 60999-1 1999 Connecting devices - Electrical copper EN 60999-1 2000
conductors - Safety requirements for screw-
type and screwless-type clamping units -
Part 1: General requirements and particular
requirements for clamping units for
conductors from 0,2 mm2 up to 35 mm2
(included)
IEC 61439-1 - Low-voltage switchgear and controlgear EN IEC 61439-1 -
assemblies - Part 1: General rules
IEC 61439-3 2012 Low-voltage switchgear and controlgear EN 61439-3 2012
assemblies - Part 3: Distribution boards
intended to be operated by ordinary
persons (DBO)
IEC 60269-3 ®
Edition 5.0 2024-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low- voltage fuses –
Part 3: Supplementary requirements for fuses for operation by unskilled persons
(fuses mainly for household or similar applications) – Examples of standardized
systems of fuses A to F
Fusibles basse tension –
Partie 3: Exigences supplémentaires pour les fusibles destinés à être utilisés par
des personnes non qualifiées (fusibles pour usages essentiellement
domestiques et analogues) – Exemples de systèmes de fusibles normalisés A à
F
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-9107-8
– 2 – IEC 60269-3:2024 © IEC 2024
CONTENTS
FOREWORD . 10
INTRODUCTION . 13
1 General Scope. 14
2 Normative references . 14
3 Terms and definitions . 15
Fuse system A: D type fuse system . 16
1 General . 16
1.1 Scope . 16
2 Terms and definitions . 16
3 Conditions for operation in service . 16
4 Classification . 16
5 Characteristics of fuses . 16
5.2 Rated voltage . 16
5.3.1 Rated current of the fuse-link . 17
5.3.2 Rated current of the fuse-holder . 17
5.3.3 Rated current of the gauge-piece . 17
5.5 Rated power dissipation of a fuse-link and rated acceptable power
dissipation of a fuse-holder . 17
5.6 Limits of time-current characteristics . 17
5.6.1 Time-current characteristics, time-current zones and overload curves . 17
5.6.2 Conventional times and currents . 18
5.6.3 Gates . 18
5.7 Breaking range and breaking capacity . 18
5.7.2 Rated breaking capacity . 18
6 Markings. 18
6.1 General . 18
6.2 Marking of fuse-bases . 19
6.3 Marking of the gauge-pieces . 19
7 Standard conditions for construction . 19
7.1 Mechanical design . 19
7.1.2 Connections including terminals . 19
7.1.3 Fuse-contacts . 20
7.1.4 Construction of a gauge-piece . 20
7.1.6 Construction of a fuse-carrier . 20
7.1.7 Construction of a fuse-link . 21
7.1.8 Non-interchangeability . 21
7.1.9 Construction of a fuse-base . 21
7.2 Insulating properties and suitability for isolation . 22
7.3 Temperature rise, power dissipation of the fuse-link and acceptable power
dissipation of the fuse-holder . 22
7.7 I t characteristics . 23
7.7.1 Pre-arcing I t values . 23
7.7.2 Operating I t values . 23
7.8 Overcurrent discrimination of "gG" fuse-links . 23
7.9 Protection against electric shock . 24
IEC 60269-3:2024 © IEC 2024 – 3 –
8 Tests . 24
8.1.4 Arrangement of the fuse and dimensions . 24
8.2 Verification of the insulating properties and of the suitability for isolation . 25
8.2.1 Arrangement of the fuse-holder . 25
8.2.6 Creepage distances, clearances and distances through sealing
compound . 26
8.3 Verification of temperature rise and power dissipation . 26
8.3.1 Arrangement of the fuse . 26
8.3.3 Measurement of the power dissipation of the fuse-link . 26
8.3.5 Acceptability of test results . 26
8.5.1 Arrangement of the fuse . 27
8.5.2 Characteristics of the test circuit . 27
8.5.5 Test method . 28
8.5.8 Acceptability of test results . 28
8.7.4 Verification of overcurrent discrimination . 28
8.9 Verification of resistance to heat . 29
8.9.1 Fuse-base . 29
8.9.2 Fuse-carrier . 30
8.10 Verification of non-deterioration of contacts . 30
8.10.1 Arrangement of the fuse . 30
8.10.2 Test method . 30
8.10.3 Acceptability of test results . 31
8.11 Mechanical and miscellaneous tests . 32
8.11.1 Mechanical strength. 32
Annex AA (informative) Special test for cable overload protection (for fuse system A) . 67
AA.1 Arrangement of the fuse . 67
AA.2 Test method and acceptability of test results . 67
Fuse system B – Cylindrical fuses (NF cylindrical fuse system) . 68
1 General . 68
1.1 Scope . 68
2 Terms and definitions . 68
3 Conditions for operation in service . 68
4 Classification . 69
5 Characteristics of fuses . 69
5.2 Rated voltage . 69
5.3.1 Rated current of the fuse-link . 69
5.3.2 Rated current of the fuse-holder . 69
5.5 Rated power dissipation of a fuse-link and rated acceptable power
dissipation of a fuse-holder . 69
5.6.2 Conventional times and currents . 69
5.6.3 Gates . 70
5.7.2 Rated breaking capacity . 70
6 Markings. 70
7 Standard conditions for construction . 70
7.1 Mechanical design . 71
7.1.2 Connections including terminals . 71
7.1.6 Construction of a fuse-carrier . 71
7.1.7 Construction of a fuse-link . 71
– 4 – IEC 60269-3:2024 © IEC 2024
7.1.8 Non-interchangeability . 72
7.1.9 Construction of a fuse-base . 72
7.2 Insulating properties and suitability for isolation . 72
7.3 Temperature rise, power dissipation of the fuse-link and acceptable power
dissipation of the fuse-holder . 73
7.7 I t characteristics . 73
7.7.1 Pre-arcing I t values . 73
7.7.2 Operating I t values . 74
7.8 Overcurrent discrimination of "gG" fuse-links . 74
7.9 Protection against electric shock . 74
8 Tests . 74
8.1.6 Testing of fuse-holders . 74
8.3.1 Arrangement of the fuse . 75
8.3.3 Measurement of the power dissipation of the fuse-link . 75
8.4 Verification of operation . 76
8.4.1 Arrangement of the fuse . 76
8.5 Verification of the breaking capacity . 76
8.5.1 Arrangement of the fuse . 76
8.5.5 Test method . 77
8.5.8 Acceptability of test results . 77
8.7.4 Verification of overcurrent discrimination . 77
8.8 Verification of the degree of protection of enclosures . 77
8.8.1 Verification of protection against electric shock . 77
8.9 Verification of resistance to heat . 78
8.10 Verification of non-deterioration of contacts . 78
8.10.1 Arrangement of the fuse . 78
8.10.2 Test method . 78
8.10.3 Acceptability of test results . 79
8.12 Verification of the reliability of terminals . 82
Fuse system C – Cylindrical fuses (BS cylindrical fuse system) . 90
1 General . 90
1.1 Scope . 90
2 Terms and definitions . 90
3 Conditions for operation in service . 90
4 Classification . 90
5 Characteristics of fuses . 91
5.2 Rated Voltage . 91
5.3 Rated current . 91
5.3.1 Rated current of the fuse-link . 91
5.3.2 Rated current of the fuse-holder . 91
5.5 Rated power dissipation of a fuse-link and rated acceptable power
dissipation of a fuse-holder . 91
5.6 Limits of time-current characteristics . 91
5.6.1 Time-current characteristics, time-current curves and overload curves . 91
5.6.2 Conventional times and currents . 91
5.7 Breaking range and breaking capacity . 92
5.7.2 Rated breaking capacity . 92
6 Markings. 92
IEC 60269-3:2024 © IEC 2024 – 5 –
7 Standard conditions for construction . 92
7.1 Mechanical design . 92
7.1.2 Connections including terminals . 92
7.1.6 Construction of a fuse-carrier . 92
7.1.7 Construction of a fuse-link . 92
7.1.8 Non-interchangeability . 92
7.1.9 Construction of a fuse-base . 92
7.2 Insulating properties and suitability for isolation . 93
7.3 Temperature rise, power dissipation of the fuse-link and acceptable power
dissipation of the fuse-holder . 93
7.7 I t characteristics . 93
7.9 Protection against electric shock . 93
8 Tests . 93
8.1 General . 93
8.1.4 Arrangement of the fuse . 93
8.3 Verification of temperature rise and power dissipation . 93
8.3.1 Arrangement of the fuse . 93
8.3.3 Measurement of the power dissipation of the fuse-link . 93
8.4 Verification of operation . 94
8.4.1 Arrangement of fuse . 94
8.5 Verification of breaking capacity . 94
8.5.1 Arrangement of the fuse . 94
8.5.2 Characteristics of the test circuit . 94
8.5.5 Test method . 94
8.5.8 Acceptability of test results . 94
8.10 Verification of non-deterioration of contacts . 94
8.10.1 Arrangement of the fuse . 94
8.10.2 Test method . 94
8.10.3 Acceptability of test results . 95
Fuse system F – Cylindrical fuse-links for use in plugs (BS plugtop system) . 103
1 General . 103
1.1 Scope . 103
2 Terms and definitions . 103
3 Conditions for operation in service . 103
4 Classification . 103
5 Characteristics of fuses . 103
5.2 Rated voltage . 103
5.3.1 Rated current of the fuse-link . 103
5.3.2 Rated current of the fuse-holder . 104
5.5 Rated power dissipation of a fuse-link and rated acceptable power
dissipation of a fuse-holder . 104
5.6.1 Time-current characteristics, time-current zones and overload curves . 104
5.6.2 Conventional times and currents . 104
5.6.3 Gates . 104
5.7.2 Rated breaking capacity . 104
6 Markings. 104
7 Standard conditions for construction . 105
7.1.7 Construction of a fuse-link . 105
– 6 – IEC 60269-3:2024 © IEC 2024
7.1.8 Non-interchangeability . 105
7.2 Insulating properties and suitability for isolation . 105
7.3 Temperature rise, power dissipation of the fuse-link and acceptable power
dissipation of the fuse-holder . 105
7.7 I t characteristics . 105
7.7.1 Pre-arcing I t values . 105
7.9 Protection against electric shock . 105
8 Tests . 106
8.1.4 Arrangement of the fuse-link for tests . 106
8.1.5 Testing of fuse-links . 106
8.2.4 Acceptability of test results . 107
8.3 Verification of temperature rise and power dissipation . 108
8.3.1 Arrangement of the fuse . 108
8.3.4 Test method . 108
8.3.5 Acceptability of test results . 108
8.4 Verification of operation . 108
8.4.1 Arrangement of the fuse . 108
8.5 Breaking-capacity tests . 109
8.5.1 Arrangement of the fuse . 109
8.5.2 Characteristics of the test circuit . 109
8.5.4 Calibration of the test circuit . 109
8.5.5 Test method . 109
8.5.8 Acceptability of test results . 109
8.7 Verification of I t characteristics and overcurrent discrimination . 110
8.7.3 Verification of compliance for fuse-links at 0,01 s . 110
8.10 Verification of non-deterioration of contacts . 110
8.11.1 Mechanical strength. 110
Annex BB (informative) (for all fuse systems) – Alternative tests for tests No. 1 and
No. 2 of Table 20 of IEC 60269-1:2024 . 115
BB.1 Test method . 115
BB.2 Test No. 1 . 115
BB.3 Test No. 2 . 115
Annex CC (informative) Recommendations for future designs of fuses (for all fuse
systems) . 117
CC.1 Overview. 117
CC.2 Fuse contacts . 117
CC.3 Protection against electric shock . 117
Bibliography . 118
Figure 101 – Time-current zones for "gG" fuse-links . 35
Figure 102 – Time-current zones for "gG" fuse-links . 36
Figure 103 – Time-current zone for "gG" fuse-links 13 A and 32 A . 37
Figure 104 – Dummy fuse-links according to 8.3 and 8.9.1.1 . 38
Figure 105 – Test rigs for fuse-links . 39
Figure 106 – Test rigs for fuse-links . 40
Figure 107 – Test arrangement for fuse-bases according to 8.9.1.2 . 41
Figure 108 – Example of a torque wrench according to 8.9.2 . 42
IEC 60269-3:2024 © IEC 2024 – 7 –
Figure 109 – Measuring points according to 8.3.3, 8.3.4.1 and 8.10.2 of fuse system A . 43
Figure 110 – Fuse-link, D-type. Sizes D01-D03 . 44
Figure 111 – Fuse-link, D-type. Sizes DII-DIV . 46
Figure 112 – Fuse-carrier, D-type. Sizes D01-D03 . 47
Figure 113 – Fuse-carrier, D-type. Sizes DII-DIII. 48
Figure 114 – Fuse-carrier, D-type. Size DIV . 49
Figure 115 – Edison thread for D-type fuses; limit dimensions . 50
Figure 116 – Gauges for Edison thread for D-type fuses for screwed shells of fuse-
carrier go ring gauges . 51
Figure 117 – Gauges for Edison thread, D-type fuses, go and not-go plug gauges for
screwed shells of fuse-bases . 53
Figure 118 – Fuse-base, D-type. Sizes D01-D03 . 54
Figure 119 – Fuse-base, D-type. Sizes DII-DIV . 55
Figure 120 – Fuse-base, D-type for push-in gauge pieces. Size DII-DIII . 56
Figure 121 – Gauge-piece and hand-key, D-type. Sizes D01-D03 . 58
Figure 122 – Gauge-piece and hand-key, D-type. Sizes DII-DIV . 60
Figure 123 – Gauge-piece and hand-key, D-type push-in gauge rings. Size DII-DIII . 62
Figure 124 – Whitworth thread W 3/16 for screw-in gauge rings and corresponding
fuse-bases of sizes DII and DIII . 63
Figure 125 – Gauges C 17 for concentricity of fuse-bases . 64
Figure 126 – Test dummies DII, DIII, D01, D02 and D03 for fuse-carrier test . 65
Figure 127 – Time-current zone for "gG" fuse-links 40 A . 66
Figure 201 – Fuse-link . 83
Figure 202 – Dummy fuse-link . 84
Figure 203 – Test-rig and ferrules for the measurement of the voltage drop and the
verification of operating characteristics of the cartridge . 85
Figure 204 – Fuse-base, A-type and B-type . 86
Figure 205 – Housing for verification of operation of the fuse-links with a test rig
according to Figure 203 . 87
Figure 206 – Test rig and ferrules for verification of breaking capacity . 88
Figure 207 – Gauge for verification of the upholding of the cartridge in the fuse-carrier
during withdrawal . 89
Figure 301 – Details of cylindrical fuse-links . 96
Figure 302 – Typical outline dimensions of carriers and bases for 230 V cylindrical
fuse-links . 97
Figure 303 – Typical carrier and base for 400 V cylindrical fuse-links . 97
Figure 304 – Time-current zones for "gG" fuse-link . 98
Figure 305 – Time-current zones for "gG" fuse-link . 99
Figure 306 – Standard test rig for power-dissipation test . 100
Figure 307 – Breaking-capacity test rig . 102
Figure 601 – Dimensions for cylindrical fuse-links (primarily used in plugs). 111
Figure 602 – Time-current zones for "gG" fuse-links . 112
Figure 603 – Test fuse-base . 113
Figure 604 – Typical diagram of the circuit used for breaking-capacity tests . 114
Figure BB.1 – Instant of making for Test No. 1 . 116
– 8 – IEC 60269-3:2024 © IEC 2024
Table 101 – Maximum values of power dissipation . 17
Table 102 – Conventional time and current for "gG" fuse-links . 18
Table 103 – Gates for specified pre-arcing times of "gG" fuse-links with rated currents
2 A, 4 A, 6 A, 10 A, 13 A and 35 A . 18
Table 104 – Cross-sections of rigid (solid or stranded) or flexible copper conductors . 20
Table 105 – Creepage distances, clearances and distances through sealing compound . 22
Table 106 – Temperature-rise limits for terminals . 23
Table 107 – Pre-arcing I t values at 0,01 s for "gG" fuse-links . 23
Table 108 – I t values for the discrimination with circuit breakers . 23
Table 109 – Survey of tests on fuse-links . 25
Table 110 – Survey of tests on fuse-bases, fuse-carriers and gauge-pieces . 25
Table 111 – Test torque for verification of temperature rise and power dissipation . 26
Table 112 – Test according to 8.5.5.1 . 27
Table 113 – Test currents and I t limits for the discrimination test . 28
Table 114 – Power dissipation of a dummy fuse-link at rated and conventional fusing
currents including tolerances . 29
Table 115 – Test-torque for mechanical strength . 33
Table 116 – Mechanical strength of screw-thread . 33
Table 201 – Maximum values of rated power dissipation and values of rated
acceptable power dissipation . 69
Table 202 – Conventional times and currents for "gG" fuse-links . 70
Table 203 – Gates for specified pre-arcing times of "gG" fuse-links with rated currents
lower than 16 A . 70
Table 204 – Minimum rated breaking capacities .
...
SIST EN IEC 60269-3:2025 표준은 전기 안전을 보장하는 데 중점을 두고 있으며, 비숙련자가 사용하는 저전압 퓨즈에 대한 보충 요구사항을 명확히 규정하고 있습니다. 이 표준은 가정용 또는 유사한 응용 프로그램에서의 사용을 염두에 두고 개발되었습니다. 이 표준의 범위는 IEC 60269-3:2024에 따라 네 가지 퓨즈 시스템으로 나뉘며, 각각 비숙련자가 사용할 수 있는 표준화된 퓨즈의 특정 예시를 다룹니다. 특히 “gG” 퓨즈에만 적용되는 이 표준은 비숙련자가 전기 장비에 접근하게 될 경우 발생할 수 있는 위험을 최소화하는 데 필수적입니다. 전기는 안전성을 위협할 수 있기 때문에, 퓨즈 표준의 관련 부분은 서비스 중 최대 안전 요건을 제공해야 합니다. SIST EN IEC 60269-3의 강점은 비숙련자를 위한 네 가지 독립적인 시스템을 통해 안전하고 효율적인 퓨즈 사용을 보장한다는 점입니다. 각 시스템은 더 높은 전류 정격을 가진 퓨즈-링 사용을 피할 수 있는 고유한 기계적 솔루션을 제공합니다(비호환성). 이는 전선 및 케이블의 보호를 보장하며, 사용자는 항상 동일한 유형의 퓨즈-링으로 교체하여야 함을 강조하고 있습니다. 제조업체의 문서에는 안전한 퓨즈-링의 작동을 위한 지침이 포함되어 있어, 사용자가 보다 안전하게 기기를 사용할 수 있도록 합니다. 이 표준은 비숙련자가 전기 기기를 안전하게 운영할 수 있도록 지원하는 중요한 역할을 하며, 전반적인 전기 안전 기준을 준수하는 데 매우 관련성이 높습니다. 따라서, SIST EN IEC 60269-3:2025 표준은 가정용 전기 안전을 강화하기 위한 필수적인 자료로 접근해야 할 것입니다.
The SIST EN IEC 60269-3:2025 standard provides comprehensive coverage for low-voltage fuses, specifically designed for use by unskilled persons, making it highly relevant for household and similar applications. The scope of this standard is explicitly focused on “gG” fuses, which are crucial for ensuring safety in environments where individuals may not possess the technical expertise required to handle electrical systems safely. One of the notable strengths of the standard is its structured approach, dividing the content into four distinct fuse systems. This segmentation aids in simplifying complex information, thereby making it accessible to unskilled users. Each system is tailored to address specific scenarios, thereby reinforcing safety protocols and ensuring that proper fuses are utilized in domestic applications. Moreover, the standard places a significant emphasis on safety measures, outlining requirements that aim to minimize risks associated with electrical hazards. By implementing non-interchangeability features, the standard effectively prevents the use of fuse-links with higher current ratings, which could potentially lead to dangerous situations if incorrectly replaced by untrained individuals. Additionally, the inclusion of manufacturer-provided instructions for the safe operation of fuse-links adds another layer of relevance. These guidelines empower users with the knowledge required to adhere to safety procedures, enhancing the overall effectiveness of the standard in promoting safe electrical practices in homes. In summary, SIST EN IEC 60269-3:2025 stands out as a vital reference for ensuring safety and reliability in low-voltage fuse systems designed for unskilled users. Its precise scope, strengths in segmentation, focus on safety protocols, and user assistance make it an essential document in the realm of electrical standards for household applications.
La norme SIST EN IEC 60269-3:2025 se concentre sur les fusibles basse tension, en particulier sur les exigences complémentaires pour les fusibles destinés à être utilisés par des personnes non qualifiées, ce qui la rend extrêmement pertinente pour les applications domestiques ou similaires. En effet, cette norme s'adresse spécifiquement aux fusibles « gG », garantissant ainsi une sécurité maximale lors de leur utilisation. L'un des principaux points forts de la norme réside dans sa répartition claire en quatre systèmes de fusibles, chacun correspondant à un exemple précis de fusibles standardisés pour un usage par des non-techniciens. Cela permet de simplifier la compréhension et l'application de la norme pour les utilisateurs qui n'ont pas de formation technique, tout en assurant un haut niveau de sécurité. La norme SIST EN IEC 60269-3:2025 met également en avant des mécaniques de protection innovantes, telles que la non-interchangeabilité des fusibles à des intensités de courant supérieures, ce qui minimise les risques d'erreurs de remplacement. Cela répond à la nécessité d'éviter des situations dangereuses liées à l'électricité, surtout dans un contexte où les utilisateurs peuvent manquer de compétences techniques. En outre, les instructions fournies par les fabricants sur le fonctionnement sécuritaire des fuse-links renforcent l'importance de la sensibilisation à la sécurité. Cela est crucial non seulement pour éviter des accidents, mais aussi pour promouvoir une utilisation plus responsable et informée des équipements électriques dans les foyers. Dans l’ensemble, la norme SIST EN IEC 60269-3:2025 constitue un cadre essentiel qui combine sécurité, clarté et efficacité, rendant les installations électriques à basse tension plus accessibles et sûres pour le grand public.
Die Norm SIST EN IEC 60269-3:2025 behandelt die Anforderungen an Niederspannungssicherungen, insbesondere für den Einsatz durch ungeschulte Personen. Der Fokus liegt auf Sicherheit und Benutzerfreundlichkeit, um Gefahren, die durch Elektrizität entstehen können, zu minimieren. Die Norm bietet einen klaren Rahmen und spezifische Anforderungen für die Kategorie „gG“ Sicherungen, die hauptsächlich in Haushaltsanwendungen Verwendung finden. Ein wesentliches Merkmal dieser Norm ist die Unterteilung in vier Systeme von Sicherungen, jeweils mit einem speziellen Beispiel standardisierter Sicherungen. Diese Systeme gewährleisten durch konstruktive Maßnahmen, dass nur die dafür vorgesehenen Sicherungselemente verwendet werden können, was die Nicht-Austauschbarkeit betont und somit zusätzliche Sicherheit bietet. Die unterschiedlichen Systeme sind gezielt auf die Bedürfnisse ungeschulter Personen ausgerichtet, um deren Sicherheit beim Umgang mit elektrischen Installationen zu erhöhen. Die SIST EN IEC 60269-3:2025 vereinfacht auch die Bedienung durch klare Anweisungen in der Herstellerliteratur, wodurch sichergestellt wird, dass der Endnutzer die richtige Sicherung verwenden kann. Hierbei wird die Maximalstromstärke berücksichtigt, um einen sicheren Betrieb zu garantieren und das Risiko von Überlastungen zu reduzieren. Die Norm garantiert nicht nur die Sicherheit der einzelnen Benutzer, sondern trägt auch zur allgemeinen Sicherheit des Stromnetzes und der elektrischen Infrastruktur bei. Zusammenfassend lässt sich sagen, dass die SIST EN IEC 60269-3:2025 eine grundlegende Rolle in der Gewährleistung der Sicherheit von Niederspannungssicherungen spielt, indem sie klare Richtlinien für ungeschulte Personen bereitstellt und somit ein hohes Maß an Schutz und Betriebssicherheit in Haushalts- und ähnlichen Anwendungen gewährleistet.
SIST EN IEC 60269-3:2025は、未熟練者による使用を前提とした低電圧ヒューズのための補足要件を定めた重要な文書です。この標準は、主に家庭用または類似の用途で使用されるヒューズに適用され、特に「gG」ヒューズに焦点を当てています。未熟練者は技術的な知識や十分な経験を持たないため、標準には最大限の安全性を確保するための要件が設定されています。この標準は、未熟練者が安全に使用できるように設計された四つのヒューズシステムを提供しており、それぞれが特定の標準化されたヒューズの例に対応しています。 SIST EN IEC 60269-3の強みは、ヒューズの互換性に関する明確な指針を示し、誤ったヒューズリンクを使用することによるリスクを最小化している点です。すべてのシステムは、高い電流定格のヒューズリンクを使用しないようにするための独自の機械的解決策を提供しており、これによってケーブルや配線の保護が確保されています。また、製造者の文書には、安全なヒューズリンクの操作に関する指示が詳細に記載されており、利用者に対して具体的な手順を通じて安全性を促進しています。 この標準の適用範囲は、家庭内での安全な電気使用を確保するための非常に重要な要素であり、特に技術的な背景を持たない使用者にとっては、確実な知識源となります。SIST EN IEC 60269-3は、家庭やその他の類似の環境における電気安全において、その重要性と関連性を存分に発揮しています。
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