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 3,15 A 6.32 X085442
Mersen X085442 MI6FA50V3.15 high-speed 6.3 x 32 mm ceramic fuse rated at 3.15 A and 500 V AC, designed for semiconductor and sensitive electronic circuit protection.
£3.08
Why Choose the Mersen X085442 High-Speed Miniature Fuse?
The Mersen X085442, catalogue number MI6FA50V3.15, is a compact and dependable high-speed semiconductor miniature fuse designed to protect sensitive electronic components against damaging overcurrents and short circuits. It forms part of Mersen’s 6.3 × 32 mm FA fuse range, developed for power electronic and industrial control applications requiring rapid fault interruption.
Its very fast-acting FA characteristic helps minimise the electrical and thermal energy transferred to vulnerable semiconductor devices during a fault. This makes the X085442 suitable for protecting diodes, thyristors, converters, rectifiers and associated circuitry where a conventional general-purpose fuse may not operate quickly enough.
Rated at 3.15 A and 500 V AC, the Mersen X085442 combines a robust ceramic cartridge body with a very high 200 kA minimum interrupting rating. Its ferrule terminals and clip-mounted format allow straightforward installation in compatible fuse holders within control panels, power supplies and electronic equipment.
Key Advantages
- Very fast-acting FA fuse characteristic for semiconductor protection.
- 3.15 A rated current for electronic and industrial control circuits.
- 500 V AC rated voltage for higher-voltage equipment.
- Very high 200 kA interrupting rating for reliable fault clearance.
- Low I²t performance helps reduce damaging energy passed to protected components.
- Compact 6.3 × 32 mm ceramic cartridge construction.
Key Features
- Mersen X085442 high-speed miniature fuse.
- Catalogue number MI6FA50V3.15.
- 3.15 A rated current.
- 500 V AC IEC rated voltage.
- Very fast-acting FA operating characteristic.
- 200 kA minimum interrupting rating.
- 2.46 A²s melting I²t.
- 7 A²s clearing I²t at rated voltage.
- Ceramic cartridge body with ferrule terminals.
- Clip-mounted 6.3 × 32 mm format.
Fast Protection for Sensitive Electronic Components
Semiconductor devices can be damaged by high fault currents within a very short period. High-speed fuses such as the Mersen X085442 are designed to operate rapidly and restrict the amount of energy transferred into the protected circuit, helping prevent costly damage to sensitive power electronic components.
The ceramic body and high interrupting capacity provide dependable containment during severe short-circuit conditions. Its compact cartridge dimensions make it suitable for space-limited control panels, converters, power supplies and industrial automation equipment.
Typical Applications
- Semiconductor converters and power electronic equipment.
- Diode, thyristor and rectifier protection.
- Industrial control and automation systems.
- Electronic power supplies and converters.
- Measurement and instrumentation equipment.
- Control panels requiring rapid fault interruption.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 3.15 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 6.3x32 mm | |
| Fuse Class | Fast acting | |
| Manufacturer | Mersen | |
| Series | Semiconductor Miniature Fuses Size 6 × 32 FA 500 V | |
| Item number | X085442 | |
| Catalogue number | MI6FA50V3.15 | |
| Product type | High-speed semiconductor miniature fuse | |
| Rated current | 3.15 A | |
| Rated voltage | 500 V AC | |
| Current type | AC | |
| Speed characteristic | High speed / very fast acting | |
| Design characteristic | FA | |
| Minimum interrupting rating | 200 kA | |
| Melting I²t | 2.46 A²s | |
| Clearing I²t at rated voltage | 7 A²s | |
| Fuse size | 6.3 × 32 mm | |
| Product diameter | 6.3 mm | |
| Product length | 32 mm | |
| Product height | 6.3 mm | |
| Mounting type | Clip mounting | |
| Terminal type | Ferrule | |
| Body material | Ceramic | |
| Product weight | approx. 2.5 g | |
| EAN | 3605340069518 | |
| RoHS compliant | Yes |
Frequently Asked Questions
What is the Mersen X085442 used for?
The Mersen X085442 is used to provide very fast overcurrent and short-circuit protection for semiconductor devices, converters and sensitive electronic control circuits.
What is the current rating of the Mersen X085442?
The fuse has a rated current of 3.15 A.
What voltage is the X085442 rated for?
The Mersen X085442 has an IEC rated operating voltage of 500 V AC.
What is the breaking capacity of this fuse?
The X085442 has a minimum interrupting rating of 200 kA, allowing it to safely interrupt very high prospective fault currents.
What size is the Mersen X085442 fuse?
It uses a compact 6.3 × 32 mm ceramic cartridge format with ferrule terminals for clip-mounted installation.
Trusted for Semiconductor Circuit Protection
Mersen high-speed miniature fuses are widely used by electronics manufacturers, automation engineers and industrial maintenance professionals to protect sensitive semiconductor devices against damaging overcurrents and short circuits.
