Overview
IEC 60127-6:2023 - "Miniature fuses - Part 6: Fuse-holders for miniature fuse-links" specifies safety, electrical, mechanical and thermal requirements and test methods for fuse-holders used with miniature cartridge and sub‑miniature fuse-links (IEC 60127 series). It applies to fuse‑holders intended for protection of electric appliances, electronic equipment and component parts normally used indoors. The standard clarifies mounting, marking, compatibility, and test procedures while noting that requirements for holders used with certain modular or special fuse-links (IEC 60127-4 and IEC 60127-7) are under consideration. It does not cover holders for fuses addressed by IEC 60269-1.
Keywords: IEC 60127-6, fuse-holders, miniature fuses, miniature fuse-links, electrical safety, appliance protection, fuse-holder testing.
Key topics and technical requirements
- Scope and definitions - Applicability to fuse-holders matching IEC 60127-2, -3, and (as applicable) -4/-7 fuse‑links, plus normative references and terms.
- General requirements & ratings - Preferred ratings, classifications and marking requirements for correct identification and use.
- Protection against electric shock - Categories (PC1–PC3) describing levels of integral protection for accessible parts.
- Clearances and creepage - Minimum distances, insulation coordination and pollution degree considerations to meet overvoltage and safety requirements.
- Electrical tests - Insulation resistance, dielectric strength, impulse withstand voltage, and contact resistance measurement procedures.
- Mechanical requirements - Mounting types (panel, PCB), mechanical strength of connections and fastenings, vibration and impact tests, terminal types (screw, solder, plug-in).
- Thermal requirements - Rated power acceptance, temperature measurement, derating curves, resistance to abnormal heat, needle‑flame and glow‑wire tests for fire safety.
- Endurance and durability - Mechanical and electrical endurance tests, corrosion and solvent resistance.
- Test apparatus & dummy fuse-links - Gauges, dummy fuse‑links and PC board test fixtures specified in normative tables and figures.
- Annexes - Test sequences, insulation coordination guidance, additional tests and application guidance.
Practical applications - who uses IEC 60127-6
- Manufacturers of fuse-holders and miniature cartridge fuses for consumer appliances and electronic devices.
- Appliance and equipment designers integrating overcurrent protection into indoor electrical products.
- Test laboratories conducting compliance verification and type testing against IEC requirements.
- Safety engineers, procurement officers and regulatory bodies assessing product conformity and safety labels.
- PCB designers and OEMs ensuring mechanical compatibility and thermal derating for mounted fuse‑holders.
Related standards
- IEC 60127 series (Part 2, Part 3, Part 4, Part 7) - definitions and fuse-link types.
- IEC 60269‑1 - low‑voltage fuses (note: IEC 60127-6 excludes holders covered by this series).
- IEC 60664‑1 - insulation coordination and creepage/clearance guidance.
Use IEC 60127-6:2023 when specifying, designing or testing fuse‑holders to ensure safe, compatible and compliant miniature fuse installations in indoor electrical and electronic products.
