Why Choose the Mersen D085448 High-Speed Miniature Fuse?
The Mersen D085448, catalogue reference MI6FA50V12.5, is a high-speed semiconductor miniature fuse developed to protect sensitive electronic components and power semiconductor devices against damaging overcurrents and short circuits. Part of Mersen's 6.3 × 32 mm FA 500 V fuse range, it delivers exceptionally fast fault interruption for industrial electronics, automation systems and power conversion equipment.
Rated at 12.5 A and 500 V AC, the D085448 features a very fast FA operating characteristic that limits the electrical energy released during fault conditions. This provides effective protection for diodes, thyristors, IGBTs, rectifiers, inverters and other sensitive semiconductor devices used throughout industrial control systems.
Its compact 6.3 × 32 mm ceramic cartridge is designed for clip mounting in compatible fuse holders, allowing straightforward installation and replacement. With a 20 kA breaking capacity, the D085448 offers dependable protection for demanding industrial applications whilst maintaining a compact footprint.
Key Advantages
- Very fast-acting semiconductor protection fuse.
- 12.5 A rated current for industrial electronic equipment.
- 500 V AC rated voltage.
- High-speed FA characteristic minimises damaging let-through energy.
- Compact 6.3 × 32 mm ceramic cartridge.
- 20 kA breaking capacity for reliable fault interruption.
- Designed for industrial power electronics and automation equipment.
Key Features
- Mersen semiconductor miniature fuse series.
- Catalogue reference MI6FA50V12.5.
- 12.5 A rated current.
- 500 V AC rated voltage.
- Very fast FA operating characteristic.
- 6.3 × 32 mm ceramic body.
- Clip mounting installation.
- Non-indicating fuse construction.
- High interrupting capability.
- UL recognised and RoHS compliant.
Reliable Protection for Industrial Power Electronics
Semiconductor components require protection capable of reacting significantly faster than conventional general-purpose fuses. The Mersen D085448 rapidly interrupts excessive fault currents, helping minimise thermal stress and preventing damage to valuable electronic assemblies.
Its compact ceramic construction, fast operating characteristic and high interrupting capability make it well suited for industrial automation, variable speed drives, converters, rectifiers, power supplies and other applications where reliable semiconductor protection is essential.
Typical Applications
- Semiconductor device protection.
- Variable speed drives.
- Industrial power supplies.
- Power converters and rectifiers.
- Automation and control equipment.
- Electronic control panels.
- Industrial power electronic assemblies.
