Why Choose the Mersen W084015 High-Speed Miniature Fuse?
The Mersen W084015, catalogue number MI5FA25V12.5, is a compact high-speed semiconductor miniature fuse developed to protect sensitive electronic components, measuring equipment and industrial control apparatus against damaging overcurrents and short circuits.
With a rated current of 12.5 A and a rated operating voltage of 250 V AC, this fuse combines fast fault interruption with a compact 5 × 20 mm ceramic cartridge design. Its FA characteristic provides rapid operation, helping to limit the electrical and thermal energy passed to vulnerable semiconductor devices.
The W084015 is designed for clip mounting and features ferrule terminals for straightforward installation in compatible fuse holders. A minimum interrupting rating of 10 kA, together with carefully controlled melting and clearing I²t values, enables reliable protection in electronic, automation and power-conversion applications.
Key Advantages
- High-speed fuse designed for semiconductor and sensitive electronic circuit protection.
- 12.5 A current rating for industrial electronic applications.
- 250 V AC rated voltage.
- Compact 5 × 20 mm ceramic cartridge format.
- FA characteristic provides very fast fault interruption.
- 10 kA minimum interrupting rating.
- Clip mounting enables convenient installation and replacement.
- Low melting I²t helps reduce energy passed to protected components.
- RoHS-compliant construction for modern electrical equipment.
Key Features
- Mersen FA/FB semiconductor miniature fuse range.
- Catalogue number: MI5FA25V12.5.
- 12.5 A rated current.
- 250 V AC rated voltage.
- High-speed FA operating characteristic.
- 5 × 20 mm fuse size.
- Ceramic body for dependable electrical insulation and thermal performance.
- Ferrule terminal construction.
- Clip mounting in compatible fuse holders.
- 8.1 A²s melting I²t.
- 120 A²s clearing I²t at rated voltage.
Fast Protection for Sensitive Electronic Equipment
High-speed semiconductor fuses are engineered to interrupt fault currents before excessive thermal energy can damage electronic components. The Mersen W084015 uses a very fast FA characteristic to help protect semiconductors, measuring devices and industrial control equipment against overcurrent and short-circuit conditions.
Its low melting I²t limits the energy released during the early stages of a fault, while the ceramic cartridge and high interrupting capacity support safe isolation of higher fault currents. This combination makes the fuse suitable for compact electronic systems where dependable and rapid circuit protection is essential.
Typical Applications
- Semiconductor device protection.
- Industrial electronic control equipment.
- Measuring and monitoring apparatus.
- Power supplies and conversion equipment.
- Automation control systems.
- Printed circuit and electronic assemblies.
- Instrumentation and test equipment.
- OEM machinery and specialised electronic systems.
