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 400V FA 4 A 6.32 MI6FA40V4
Mersen X084361 MI6FA40V4 high-speed 6.3 x 32 mm ceramic fuse rated at 4 A and 400 V AC, designed for semiconductor, converter and sensitive electronic circuit protection.
£2.49
Why Choose the Mersen X084361 High-Speed Miniature Fuse?
The Mersen X084361, catalogue number MI6FA40V4, is a compact and dependable high-speed semiconductor protection fuse designed to protect sensitive electronic components against damaging overcurrents and short circuits. It forms part of Mersen’s 6.3 × 32 mm FA miniature fuse range, which provides rapid fault interruption for power electronic and industrial control applications.
Its very fast-acting FA characteristic helps limit the electrical and thermal energy transferred to vulnerable semiconductor devices during a fault. This makes the X084361 particularly suitable for protecting converters, diodes, thyristors, triacs and associated electronic circuitry where a conventional general-purpose fuse may not respond quickly enough.
Rated at 4 A and 400 V AC, the Mersen X084361 combines a robust ceramic cartridge body with a very high 200 kA minimum interrupting rating. Its ferrule terminals and clip-mounted construction allow straightforward installation in compatible fuse holders within control panels, converters and electronic equipment.
Key Advantages
- Very fast-acting FA fuse characteristic for semiconductor protection.
- 4 A current rating for electronic and industrial control circuits.
- 400 V AC rated voltage suitable for higher-voltage applications.
- Very high 200 kA interrupting capacity for dependable fault clearance.
- Low I²t performance helps reduce stress on protected components.
- Compact 6.3 × 32 mm ceramic cartridge construction.
Key Features
- Mersen X084361 high-speed miniature fuse.
- Catalogue number MI6FA40V4.
- 4 A rated current.
- 400 V AC IEC rated voltage.
- Very fast-acting FA characteristic.
- 200 kA minimum interrupting rating.
- 4.6 A²s melting I²t.
- 10 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 X084361 are designed to operate rapidly and restrict the amount of energy passed into the protected circuit, helping prevent costly damage to sensitive power electronic components.
The fuse’s ceramic body and high interrupting capacity provide reliable containment during severe short-circuit conditions. Its compact cartridge dimensions make it suitable for space-limited control panels, power converters, electronic equipment and industrial automation systems.
Typical Applications
- Semiconductor converters and power electronic equipment.
- Diode, thyristor and triac protection.
- Industrial control and automation systems.
- Electronic power supplies and rectifiers.
- Measurement and instrumentation equipment.
- Control panels requiring rapid fault interruption.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 4 A | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Size | 6.3x32 mm | |
| Manufacturer | Mersen | |
| Series | Semiconductor Miniature Fuses Size 6 × 32 FA/FB 400 V | |
| Item number | X084361 | |
| Catalogue number | MI6FA40V4 | |
| Product type | High-speed semiconductor miniature fuse | |
| Rated current | 4 A | |
| Rated voltage | 400 V AC | |
| Current type | AC | |
| Speed characteristic | High speed / FA | |
| Minimum interrupting rating | 200 kA | |
| Melting I²t | 4.6 A²s | |
| Clearing I²t at rated voltage | 10 A²s | |
| Fuse size | 6.3 × 32 mm | |
| Product diameter | 6.3 mm | |
| Product length | 32 mm | |
| Mounting type | Clip mounting | |
| Terminal type | Ferrule | |
| Body material | Ceramic | |
| Product weight | approx. 2.5 g | |
| EAN | 3605340062465 | |
| RoHS compliant | Yes |
Frequently Asked Questions
What is the Mersen X084361 used for?
The Mersen X084361 is used to provide very fast overcurrent and short-circuit protection for semiconductors, converters and sensitive electronic control circuits.
What is the current rating of the Mersen X084361?
The fuse has a rated current of 4 A.
What voltage is the X084361 rated for?
The Mersen X084361 has a rated operating voltage of 400 V AC.
What is the breaking capacity of this fuse?
The X084361 has a minimum interrupting rating of 200 kA, allowing it to safely interrupt very high prospective fault currents.
What size is the Mersen X084361 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.
