IEC 60127-3:1988/AMD2:2002

Amendment 2 - Miniature fuses - Part 3: Sub-miniature fuse-links

Amendement 2 - Coupe-circuit miniatures - Troisième partie: Eléments de remplacement subminiatures

General Information

• Status: Published
• Publication Date: 19-Dec-2002
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• Technical Committee: SC 32C - Miniature fuses
• Drafting Committee: WG 5 - TC 32/SC 32C/WG 5
• Current Stage: DELPUB - Deleted Publication
• Start Date: 20-Jan-2015
• Completion Date: 26-Oct-2025

Relations

• Amends: IEC 60127-3:1988 - Miniature fuses - Part 3: Sub-miniature fuse-links
• Effective Date: 05-Sep-2023
• Revised: IEC 60127-3:2015 - Miniature fuses - Part 3: Sub-miniature fuse-links
• Effective Date: 05-Sep-2023

Overview

IEC 60127-3:1988/AMD2:2002 is an important amendment to the international standard governing miniature fuses, specifically focusing on sub-miniature fuse-links. Published by the International Electrotechnical Commission (IEC), this amendment updates the testing procedures, schedules, and requirements for sub-miniature fuse-links used in miniature circuit protection. By defining rigorous testing schedules and specifying the number of fuse-links required for various test scenarios, IEC 60127-3:1988/AMD2:2002 ensures the reliability, safety, and performance consistency of these critical electrical components.

This amendment supports uniformity in testing standards internationally and addresses fuse-links' endurance, rated breaking capacity, time-current characteristics, insulation resistance, and marking legibility, among other factors.

Key Topics

• Scope of Amendment
  Amendment 2 revises the test requirements related to sub-miniature fuse-links used as replacement elements in miniature fuses, with updates on test element quantities and detailed testing schedules.

• Testing Requirements
  The document specifies precise numbers of fuse-links required for different testing contexts:

  • Individual ampere ratings according to specific standard sheets (e.g., sheets 1 and 2, or 3 and 4).
  • Maximum current ratings for homogeneous series fuse-links.
  • Minimum current ratings for homogeneous series fuse-links.
    It also outlines the number of spare elements to be kept in reserve during testing.

• Test Schedules and Methods
  The amendment includes comprehensive testing schedules covering:

  • Endurance tests to guarantee fuse performance over a defined operating life.
  • Time-current characteristic tests, ensuring fuse-links meet response times under various current levels (e.g., 10In, 4In).
  • Rated breaking capacity tests at both AC and DC voltages to confirm interrupting capability.
  • Insulation resistance measurements to validate safety isolation.
  • Verification of marking legibility and durability ensuring traceability.
  • Evaluation of soldered joints and terminations for mechanical and electrical integrity.

• Test Tables
  The amendment renames and updates existing test tables and introduces new tables detailing test schedules for:

  • Individual fuse ratings for various standard sheets.
  • Maximum and minimum ampere ratings of homogeneous series.
    These tables assist manufacturers and testing laboratories in organizing proper test plans aligned with international requirements.

Applications

• Miniature and Sub-Miniature Fuses
  The standards apply primarily to the design, manufacturing, and quality assurance processes of miniature fuses incorporating sub-miniature fuse-links. This is critical for protection in compact electrical and electronic apparatus.

• Component Replacement and Quality Control
  The amendment is essential for establishing protocols for replacement fuse-links used in existing fuse designs, ensuring compatibility and safety compliance.

• Electrical Equipment Safety
  Industries relying on miniature fuses for circuit protection-including consumer electronics, industrial controls, telecommunications, and automotive sectors-benefit from standardized testing that guarantees fuse reliability and minimizes risk of electrical faults or fires.

• Testing Laboratories and Certification Bodies
  These entities utilize the amendment’s schedules and specifications to assess conformity of fuse-links with internationally agreed criteria, supporting global trade and regulatory approval.

Related Standards

• IEC 60127-1
  Governs general requirements, construction, and tests for miniature fuses and provides foundational testing subclauses referenced throughout amendment 2.

• IEC 60127 Series
  Covers all parts related to miniature fuses, including fuse-links, providing holistic requirements for different fuse formats and applications.

• National and Regional Equivalents
  Many local standards or regulatory frameworks reference IEC 60127 series for fuse safety compliance in domestic markets.

• Product Safety and Electromagnetic Compatibility Standards
  Fuse testing standards complement broader safety norms to ensure electrical products operate safely and reliably in diverse environments.

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By adhering to IEC 60127-3:1988/AMD2:2002 amendment standards, manufacturers and testing institutions ensure robust quality, universal acceptance, and dependable performance of sub-miniature fuse-links in miniature fuse applications worldwide.

Standards Content (Sample)

NORME CEI
INTERNATIONALE IEC
60127-3
INTERNATIONAL
STANDARD
AMENDEMENT 2
AMENDMENT 2
2002-12
Amendement 2
Coupe-circuit miniatures –
Partie 3:
Eléments de remplacement subminiatures
Amendment 2
Miniature fuses –
Part 3:
Sub-miniature fuse-links
 IEC 2002 Droits de reproduction réservés  Copyright - all rights reserved
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
CODE PRIX
F
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

– 2 – 60127-3 Amend. 2  CEI:2002
AVANT-PROPOS
Le présent amendement a été établi par le sous-comité 32C: Coupe-circuit à fusibles
miniatures, du comité d'études 32 de la CEI: Coupe-circuit à fusibles.
Le texte de cet amendement est issu des documents suivants:
FDIS Rapport de vote
32C/323/FDIS 32C/332/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cet amendement.
Le comité a décidé que le contenu de la publication de base et de ses amendements ne sera
pas modifié avant 2005. A cette date, la publication sera
• reconduite;
• supprimée;
• remplacée par une édition révisée, ou
• amendée.
___________
Page 8 de l’amendement 1
7 Généralités sur les essais
Remplacer le premier alinéa de 7.2.1 par ce qui suit:
Pour les essais individuels des courants assignés des fusibles selon les feuilles de norme 1
et 2, le nombre d’éléments de remplacement subminiatures requis est de 66 dont 12 sont
gardés en réserve. Le programme des essais est donné dans le tableau 1.
Pour les essais individuels des courants assignés des fusibles selon les feuilles de norme 3
et 4, le nombre d’éléments de remplacement requis est de 51 dont 12 sont gardés en réserve.
Le programme des essais est donné dans le tableau 2.
Pour le courant maximal assigné d’une série homogène, le nombre d’éléments de
remplacement requis dans le cas d'éléments de remplacement conformes aux feuilles de
norme 1 et 2 est de 56 dont 22 sont gardés en réserve. Le programme des essais est
présenté au tableau 3. Le nombre d'éléments de remplacement requis dans le cas d'éléments
de remplacement conformes aux feuilles de normes 3 et 4 est de 51 dont 22 sont gardés en
réserve. Le programme des essais est donné dans le tableau 4.
Pour le courant minimal assigné d’une série homogène, le nombre d’éléments de
remplacement requis est de 38 dont 16 sont gardés en réserve. Le programme des essais est
donné dans le tableau 5.
60127-3 Amend. 2  IEC:2002 – 3 –
FOREWORD
This amendment has been prepared by subcommittee 32C: Miniature fuses, of IEC technical
committee 32: Fuses.
The text of this amendment is based on the following documents:
FDIS Report on voting
32C/323/FDIS 32C/332/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until 2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
___________
Page 9 of Amendement 1
7 General notes on tests
Replace the first paragraph of 7.2.1 by the following:
For testing individual fuse ratings according to standard sheets 1 and 2, the number of sub-
miniature fuse-links required is 66, of which 12 are kept as spares. The testing schedule is
shown in table 1.
For testing individual fuse ratings according to standard sheets 3 and 4, the number of fuse-
links required is 51, of which 12 are kept as spares. The testing schedule is shown in table 2.
For the maximum ampere rating of a homogeneous series, the number of fuse-links required
in the case of fuse-links in accordance with standard sheets 1 and 2 is 56, of which 22 are
kept as spares. The testing schedule is shown in table 3. The number of fuse-links required in
the case of fuse-links in accordance with standard sheets 3 and 4 is 51, of which 22 are kept
as spares. The testing schedule is shown in table 4.
For the minimum ampere rating of a homogeneous series the number of fuse-links required is
38, of which 16 are kept as spares. The test schedule is shown in table 5.

– 4 – 60127-3 Amend. 2  CEI:2002
Pages 16 et 18 de l’amendement 1
Renommer les tableaux 1 et 2 comme suit:
Tableau 1 – Programme des essais pour les courants assignés individuels,
feuilles de norme 1 et 2
Tableau 2 – Programme des essais pour les courants assignés individuels,
feuilles de norme 3 et 4
Ajouter, après le tableau 2, les nouveaux tableaux 3, 4 et 5 suivants:
...