Why Choose the Mersen B093289 MI6FA69V1.25 Miniature Fuse?
The Mersen B093289 MI6FA69V1.25 is a compact 1.25 A high-speed semiconductor miniature fuse designed to protect sensitive electronic components and power semiconductor devices against damaging overcurrents and short circuits. Part of Mersen’s MI6FA 690 V fuse series, it delivers very fast fault interruption in a space-saving 6.3 × 32 mm cartridge format.
Its very fast-acting FA operating characteristic helps limit the thermal energy passed through to vulnerable semiconductor components during an electrical fault. This makes the fuse particularly suitable for converters, rectifiers, diodes, thyristors, triacs and industrial electronic equipment where rapid fault clearance is essential.
Rated at 1.25 A and 690 V AC, the Mersen B093289 offers a high 30 kA breaking capacity. Its compact clip-mounted construction, low energy let-through and recognised semiconductor protection performance make it a dependable choice for industrial automation, power electronics and OEM equipment.
Key Advantages
- Very fast-acting semiconductor protection fuse.
- 1.25 A rated current for sensitive electronic circuits.
- 690 V AC voltage rating for demanding industrial applications.
- Compact 6.3 × 32 mm cartridge format.
- 30 kA breaking capacity for dependable fault interruption.
- Low I²t performance helps minimise damage to semiconductor devices.
Key Features
- Mersen MI6FA semiconductor miniature fuse series.
- 1.25 A rated current.
- 690 V AC rated voltage.
- Very fast-acting FA characteristic.
- Standard 6.3 × 32 mm fuse size.
- Clip-mounted installation in a compatible fuse holder.
- Designed for sensitive semiconductor and electronic equipment.
- UL and CSA recognised design.
High-Speed Protection for Power Electronics
Power semiconductor components can be permanently damaged by extremely short overcurrent events. The Mersen B093289 is engineered to interrupt fault currents rapidly, helping restrict the thermal energy transferred to protected components and supporting longer equipment service life.
Its 690 V rating makes it suitable for higher-voltage electronic and industrial control systems. The compact cartridge format also enables efficient installation in equipment where panel space is limited and reliable semiconductor protection is required.
Typical Applications
- Power semiconductor protection.
- Converters and rectifier circuits.
- Diode protection.
- Thyristor and triac circuits.
- Industrial power electronic equipment.
- Automation and OEM control assemblies.
