Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 500V FA 8 A 6.32 B085446
Mersen B085446 MI6FA50V8 high-speed semiconductor miniature fuse rated at 8 A and 500 V AC with a 6.3 x 32 mm ceramic cartridge and 20 kA breaking capacity.
£2.93
Why Choose the Mersen B085446 MI6FA50V8 Miniature Fuse?
The Mersen B085446 MI6FA50V8 is a compact 8 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 500 V fuse series, it delivers ultra-fast fault interruption in a standard 6.3 × 32 mm ceramic cartridge format.
Its high-speed FA operating characteristic rapidly interrupts fault currents, helping minimise the thermal energy transferred to vulnerable semiconductor components. This makes it ideal for converters, rectifiers, inverters, power supplies and industrial automation equipment where dependable semiconductor protection is essential.
Rated at 8 A and 500 V AC, the Mersen B085446 provides a high 20 kA breaking capacity. Its ceramic body, ferrule terminals and clip-mounted design ensure reliable performance in demanding industrial power electronic applications.
Key Advantages
- High-speed semiconductor protection fuse.
- 8 A rated current for power electronic circuits.
- 500 V AC rated voltage.
- Compact 6.3 × 32 mm cartridge format.
- 20 kA breaking capacity for dependable fault interruption.
- Designed to minimise thermal damage to semiconductor devices.
Key Features
- Mersen MI6FA semiconductor miniature fuse series.
- 8 A rated current.
- 500 V AC rated voltage.
- High-speed FA operating characteristic.
- Standard 6.3 × 32 mm ceramic cartridge.
- Clip-mounted installation.
- Ceramic body with metal ferrule terminals.
- Designed specifically for semiconductor protection.
Reliable High-Speed Protection for Sensitive Electronics
Power semiconductor devices can be permanently damaged by very short overcurrent events. The Mersen B085446 is engineered to interrupt fault currents rapidly, helping reduce the energy transferred to protected components and improving equipment reliability.
Its compact cartridge design makes it suitable for industrial control equipment, automation systems, converters and electronic assemblies where dependable semiconductor protection and efficient use of panel space are essential.
Typical Applications
- Semiconductor device protection.
- Industrial electronic power supplies.
- Converters and rectifiers.
- Automation and control systems.
- Power electronic equipment.
- OEM electronic assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 8 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 6.3x32 mm | |
| Manufacturer | Mersen | |
| Series | MI6FA 500 V | |
| Catalogue number | MI6FA50V8 | |
| Manufacturer part number | B085446 | |
| Product type | Semiconductor miniature fuse | |
| Rated current | 8 A | |
| Rated voltage | 500 V AC | |
| Current type | AC | |
| Operating characteristic | High speed FA | |
| Fuse Size | 6.3 × 32 mm | |
| Breaking capacity | 20 kA | |
| Pre-arcing I²t | 2 A²s | |
| Clearing I²t at rated voltage | 35 A²s | |
| Mounting type | Clip mounting | |
| Connection type | Ferrule | |
| Body material | Ceramic | |
| EAN | 3605340069617 | |
| UL recognition | UL/CSA recognised | |
| Compliance | RoHS compliant |
Frequently Asked Questions
What is the Mersen B085446 used for?
The Mersen B085446 is a high-speed semiconductor fuse designed to protect sensitive electronic components and power semiconductor devices against overcurrents and short circuits.
What is the current rating of the Mersen B085446?
The fuse has a rated current of 8 A.
What voltage is the Mersen B085446 rated for?
The fuse is rated for operation at up to 500 V AC.
What is the interrupting capacity of this fuse?
The Mersen B085446 provides a 20 kA breaking capacity for dependable short-circuit protection.
What size is the Mersen B085446?
The fuse uses the standard 6.3 × 32 mm ceramic cartridge format and is intended for clip mounting.
Trusted by Electronics and Automation Professionals
Mersen semiconductor miniature fuses are trusted worldwide by equipment manufacturers, panel builders and maintenance engineers for dependable high-speed protection of sensitive electronic and power semiconductor equipment.
