Why Choose the Mersen Y085443 Miniature Semiconductor Fuse?
The Mersen Y085443 is a high-performance 6.3 × 32 mm miniature semiconductor fuse designed to provide rapid protection for sensitive electronic components and power-semiconductor devices. Also identified by catalogue number MI6FA50V4, it has a rated current of 4 A and a rated voltage of 500 V AC.
Part of the Mersen FA miniature semiconductor fuse series, the Y085443 features a very fast-acting characteristic that interrupts abnormal currents before excessive fault energy reaches protected components. This helps reduce thermal and electrical stress on semiconductors, converters, power supplies and precision control circuits.
The Y085443 is manufactured with a durable ceramic insulating body and ferrule terminals for clip mounting in compatible fuse holders. Its compact cartridge format, 200 kA minimum breaking capacity and low let-through energy make it suitable for demanding industrial electronics, automation systems and OEM equipment.
Key Advantages
- Very fast-acting protection for semiconductor and electronic circuits.
- 4 A rated current for industrial electronic equipment.
- 500 V AC rated voltage.
- Compact 6.3 × 32 mm ceramic cartridge.
- 200 kA minimum breaking capacity for dependable fault interruption.
- Clip-mounted design supports straightforward installation and replacement.
Key Features
- Mersen FA miniature semiconductor fuse series.
- Item number: Y085443.
- Catalogue number: MI6FA50V4.
- 4 A rated current.
- 500 V AC rated voltage.
- Very fast-acting FA operating characteristic.
- 6.3 × 32 mm cylindrical cartridge.
- Ceramic insulating body.
- Ferrule terminals for clip mounting.
- RoHS-compliant construction.
Very Fast Protection for Sensitive Electronic Equipment
Semiconductor devices can be permanently damaged when excessive fault energy passes through a circuit. Very fast-acting fuses interrupt abnormal currents rapidly, helping limit peak current, thermal stress and the total energy transferred to sensitive electronic components.
The Mersen Y085443 combines a very high breaking capacity with a compact ceramic cartridge design. When correctly selected and coordinated with the protected equipment, it provides dependable protection for converters, rectifiers, industrial power supplies and automation systems.
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.
