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 6,3 A 6.32 A085445
Mersen A085445 MI6FA50V6.3 high-speed semiconductor miniature fuse rated at 6.3 A and 500 V AC, with a compact 6.3 x 32 mm clip-mounted format.
£2.84
Why Choose the Mersen A085445 MI6FA50V6.3 Miniature Fuse?
The Mersen A085445 MI6FA50V6.3 is a compact, 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 specialist MI6FA 500 V fuse range, it combines very fast operation with a space-saving 6.3 × 32 mm cartridge format.
Its FA high-speed operating characteristic provides rapid fault interruption, helping limit the energy passed through to vulnerable semiconductor components. This makes the fuse particularly suitable for converters, diodes, thyristors, triacs and electronic power control equipment where conventional general-purpose fuses may not respond quickly enough.
Rated at 6.3 A and 500 V AC, the Mersen A085445 is designed for clip mounting in a compatible fuse holder. Its compact construction, very high breaking capacity and proven semiconductor protection performance make it a reliable choice for industrial automation, power electronics and OEM equipment.
Key Advantages
- Very fast-acting semiconductor protection fuse.
- 6.3 A rated current for sensitive electronic circuits.
- 500 V AC voltage rating for industrial power applications.
- Compact 6.3 × 32 mm cartridge format.
- Helps limit damaging fault energy reaching semiconductor components.
- Very high breaking capacity for dependable short-circuit interruption.
Key Features
- Mersen MI6FA semiconductor miniature fuse series.
- 6.3 A rated current.
- 500 V AC rated voltage.
- High-speed FA operating characteristic.
- Designed for protection of power semiconductor devices.
- Standard 6.3 × 32 mm fuse size.
- Clip-mounted installation in a compatible fuse holder.
- RoHS and REACH compliant construction.
High-Speed Protection for Power Electronics
Power semiconductor components can be damaged by extremely short overcurrent events. The Mersen A085445 is engineered to operate rapidly and limit the thermal energy passed through during a fault, helping protect sensitive devices before excessive heat causes permanent damage.
Its compact cartridge format makes it suitable for equipment where panel or circuit space is limited. When installed in a correctly rated fuse holder, it provides dependable protection for converters and semiconductor switching devices used throughout industrial control and power electronic systems.
Typical Applications
- Power converter protection.
- Diode and rectifier circuits.
- Thyristor and triac protection.
- Industrial power supplies.
- Electronic control equipment.
- Automation and power electronic systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 6.3 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 6.3x32 mm | |
| Fuse Class | Fast acting | |
| Manufacturer | Mersen | |
| Series | MI6FA 500 V | |
| Model | MI6FA50V6.3 | |
| Manufacturer part number | A085445 | |
| Product type | Semiconductor miniature fuse | |
| Rated current | 6.3 A | |
| Rated voltage | 500 V AC | |
| Current type | AC | |
| Operating characteristic | High speed / very fast acting FA | |
| Fuse size | 6.3 × 32 mm | |
| Clearing I²t at rated voltage | 20 A²s | |
| Mounting type | Clip mounting | |
| Indication system | None | |
| Approximate product weight | 0.0025 kg | |
| EAN / UPC | 3605340069594 | |
| Compliance | RoHS and REACH compliant | |
| Recognition | UL / CSA recognised | |
| UL file number | E76491 |
Frequently Asked Questions
What is the Mersen A085445 used for?
The Mersen A085445 is a high-speed miniature fuse used to protect sensitive semiconductor devices, converters and electronic power circuits against overcurrents and short circuits.
What is the current rating of this fuse?
The Mersen A085445 has a rated current of 6.3 A.
What voltage is the Mersen A085445 rated for?
This semiconductor miniature fuse is rated for operation at up to 500 V AC.
What does the FA characteristic mean?
The FA characteristic identifies the fuse as a high-speed, very fast-acting device designed to interrupt fault currents rapidly and protect sensitive semiconductor components.
What size is the Mersen A085445 fuse?
The fuse has a compact cartridge size of approximately 6.3 × 32 mm and is designed for clip mounting in a compatible fuse holder.
Trusted by Power Electronics Professionals Worldwide
Mersen semiconductor fuses are trusted by equipment manufacturers, automation engineers and maintenance professionals for high-speed fault interruption and dependable protection of sensitive power electronic components.
