Why Choose the Mersen W086476 High-Speed Miniature Fuse?
The Mersen W086476, catalogue number MI6FA69V0.4, is a high-speed semiconductor miniature fuse engineered to provide rapid overcurrent protection for sensitive semiconductor devices, power electronic equipment and industrial control systems. Part of Mersen's 6.3 × 32 mm FA 690 V miniature fuse range, it is designed to minimise fault energy and help safeguard valuable electronic components.
With a rated current of 0.4 A and a rated operating voltage of 690 V AC, the W086476 is suitable for protecting converters, inverters, instrumentation, automation systems and other semiconductor-based equipment operating on higher-voltage circuits. Its fast FA characteristic ensures rapid fault interruption while maintaining dependable electrical performance.
The fuse features a robust 6.3 × 32 mm ceramic cartridge with ferrule terminals for clip mounting in compatible fuse holders. A high interrupting capability together with exceptionally low I²t values helps reduce thermal stress on protected components, improving equipment reliability and reducing downtime.
Key Advantages
- Designed for semiconductor and sensitive electronic circuit protection.
- 0.4 A rated current for precision electronic applications.
- 690 V AC rated voltage.
- Ultra-fast FA operating characteristic.
- Compact 6.3 × 32 mm ceramic cartridge.
- Very low I²t values reduce let-through energy.
- Clip mounting enables quick installation and replacement.
- UL recognised and RoHS compliant.
Key Features
- Mersen 6.3 × 32 mm FA 690 V semiconductor fuse series.
- Catalogue number: MI6FA69V0.4.
- 0.4 A rated current.
- 690 V AC rated voltage.
- High-speed FA operating characteristic.
- Ceramic fuse body with ferrule terminals.
- Clip mounting installation.
- Pre-arcing I²t: 0.03 A²s.
- Clearing I²t: 0.20 A²s.
- Designed for semiconductor protection applications.
Reliable Protection for Semiconductor Equipment
The Mersen W086476 is specifically engineered for protecting semiconductor devices where extremely fast fault clearance is essential. Its low I²t performance limits the energy delivered during fault conditions, helping to minimise damage to expensive electronic components.
The ceramic construction, high-voltage capability and compact dimensions make this fuse well suited to industrial automation systems, variable speed drives, instrumentation and power conversion equipment requiring dependable high-speed circuit protection.
Typical Applications
- Semiconductor protection.
- Industrial power electronics.
- Variable speed drives.
- Power converters and inverters.
- Industrial automation systems.
- Instrumentation equipment.
- Electronic control panels.
- OEM machinery.
