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MERSEN FUSE 500V FA 4 A 6.32 MI6FA50V4
Mersen Y085443 very fast-acting miniature semiconductor fuse, catalogue number MI6FA50V4, rated 4 A and 500 V AC in a 6.3 × 32 mm ceramic clip-mounted cartridge.
£3.08
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.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 6.3x32 mm | |
| Fuse Class | Fast acting | |
| Manufacturer | Mersen | |
| Series | FA Miniature Semiconductor Fuses | |
| Model | Y085443 | |
| Catalogue number | MI6FA50V4 | |
| Product type | Miniature semiconductor fuse | |
| Fuse format | Cylindrical cartridge | |
| Fuse size | 6.3 × 32 mm | |
| Rated current | 4 A | |
| Rated voltage | 500 V AC | |
| Electrical system | AC | |
| Speed / characteristic | Very fast acting FA | |
| Minimum breaking capacity | 200 kA | |
| Pre-arcing I²t | 4.6 A²s | |
| Total clearing I²t | 14 A²s | |
| Mounting type | Clip mounting | |
| Connection type | Ferrule | |
| Body material | Ceramic | |
| Dimensions | 6.3 mm diameter × 32 mm length | |
| Product weight | Approx. 0.0025 kg | |
| EAN / UPC | 3605340069549 | |
| RoHS compliant | Yes | |
| Manufacturer sell-pack quantity | 50 pieces |
Frequently Asked Questions
What is the Mersen Y085443 used for?
The Y085443 is a very fast-acting miniature fuse designed to protect sensitive semiconductor devices and electronic circuits against damaging overcurrent and short-circuit faults.
What are the electrical ratings of the Y085443?
The fuse has a rated current of 4 A and a rated voltage of 500 V AC.
What size is the Mersen Y085443?
It is manufactured in the standard 6.3 × 32 mm cylindrical cartridge format.
What is the breaking capacity of this fuse?
The Mersen Y085443 has a minimum breaking capacity of 200 kA.
How is the Y085443 installed?
The fuse uses ferrule terminals and is designed for clip mounting in a compatible 6.3 × 32 mm fuse holder with suitable electrical ratings.
Trusted by Electronics and Electrical Professionals
Mersen miniature semiconductor fuses are trusted by equipment manufacturers, automation engineers and maintenance professionals for rapid fault interruption and dependable protection of sensitive power-electronic systems.
