Why Choose the Mersen Y093171 Miniature Semiconductor Fuse?
The Mersen Y093171 is a high-performance 6.3 × 32 mm high-speed semiconductor fuse designed to provide rapid protection for sensitive electronic components and power-semiconductor devices. Also identified by catalogue number MI6FA40V12.5P, it has a rated current of 12.5 A and a rated voltage of 400 V AC.
Part of the Mersen FA/FB miniature semiconductor fuse series, the Y093171 features a very fast-acting characteristic that helps minimise the electrical energy transferred to protected components during a fault. This rapid interruption helps protect semiconductors, converters, rectifiers and industrial control equipment against damaging overcurrents and short circuits.
The Y093171 is manufactured with a durable ceramic insulating body and ferrule terminals for clip mounting in compatible fuse holders. An integrated striker provides a clear mechanical indication after the fuse has operated, supporting faster fault identification and more efficient maintenance.
Key Advantages
- High-speed protection for semiconductor and power-electronic circuits.
- 12.5 A rated current for industrial electronic equipment.
- 400 V AC rated voltage.
- Compact 6.3 × 32 mm ceramic cartridge.
- 150 kA minimum interrupting rating for dependable fault clearance.
- Integrated striker assists with rapid identification of an operated fuse.
Key Features
- Mersen FA/FB miniature semiconductor fuse series.
- Item number: Y093171.
- Catalogue number: MI6FA40V12.5P.
- 12.5 A rated current.
- 400 V AC rated voltage.
- High-speed FA operating characteristic.
- 6.3 × 32 mm cylindrical cartridge.
- Ceramic insulating body.
- Ferrule terminals for clip mounting.
- Integrated striker indication system.
High-Speed Protection for Sensitive Electronic Equipment
Semiconductor devices can be permanently damaged when excessive fault energy passes through a circuit. High-speed fuses interrupt abnormal currents rapidly, helping reduce peak current, thermal stress and the total energy transferred to sensitive electronic components.
The Mersen Y093171 combines a very high interrupting rating with compact ceramic construction and an integrated striker. When correctly selected and coordinated with the protected equipment, it provides dependable protection while supporting faster inspection and maintenance following a fault.
Typical Applications
- Industrial power supplies.
- Semiconductor protection circuits.
- Power converters and rectifiers.
- Automation and control equipment.
- Electronic drives and switching systems.
- OEM electrical and electronic assemblies.
