en.Wedoany.com Reported - On June 3, the Standardization Administration of China (SAC) announced that the international standard "Miniature Fuses – Part 4: Universal Modular Fuse (UMF) – Through-hole and Surface Mount Types," revised under China's lead, has been approved and officially released by the International Electrotechnical Commission (IEC). The corresponding IEC number for this standard is IEC 60127-4:2026. The Universal Modular Fuse (UMF) is a circuit safety protection component used in printed circuit boards (PCBs) and other substrate systems, directly soldered via surface mount or through-hole technology, featuring miniaturization and convenient installation.
Founded in 1906, the International Electrotechnical Commission (IEC) is one of the world's most authoritative international standards development organizations in the field of electrical and electronic engineering, headquartered in Geneva, Switzerland. The secretariat of IEC/TC 32/SC 32C, the subcommittee on miniature fuses, is managed by Italy, but China undertakes the convenorship of the working groups for all four core parts of the IEC 60127 series "Miniature Fuses" international standards, leading their development and revision.
Version 4.0 of this standard is a comprehensive technical revision of Version 3.0, published in 2005, and its two amendments from 2008 and 2012, officially superseding the previous version. The new version includes several important technical changes: First, it has been fully aligned in structure and technical provisions with the third edition of IEC 60127-1 "Miniature Fuses – Part 1: Definitions for miniature fuses and general requirements for miniature fuse-links," published in 2023; second, the rated current upper limit for universal modular fuses has been increased from 63A in the previous version to 100A, with corresponding additions to technical parameter requirements such as maximum voltage drop and maximum continuous power dissipation; third, relevant technical diagrams in the standard's annexes have been revised and updated; fourth, normative references have been updated to the latest versions.
This standard has been systematically improved in areas such as test methods and performance verification, better aligning with current and future technical development needs for miniature fuses in terms of miniaturization, high current, and high breaking capacity. This fuse-link is suitable for overcurrent protection of electrical installations, electronic equipment, and their components typically used indoors, but is not applicable for use under special conditions such as corrosive or explosive environments.
The technical revision of this standard was led by a team of Chinese experts, reflecting China's strength in standardization work in the field of miniature fuses. According to industry estimates, the market size for fuses in China in 2025 is approximately 30.8 billion yuan, with the rapid development of downstream industries such as Automotive Industry" target="_blank">new energy vehicles and energy storage placing higher demands on the technical performance of fuse products.
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