Why Choose the Mersen A084318 High-Speed Miniature Fuse?
The Mersen A084318, catalogue number MI6FA25V20, is a compact high-speed semiconductor miniature fuse designed to protect sensitive electronic components, power semiconductors and control equipment against damaging overcurrent and short-circuit conditions.
Part of the Mersen MI6FA range, the A084318 combines a standard 6.3 × 32 mm cylindrical format with a rated current of 20 A and a rated voltage of 250 V AC. Its very fast-acting FA characteristic enables rapid fault interruption, helping minimise the thermal and electrical energy passed into vulnerable semiconductor devices.
The Mersen A084318 features a high-breaking-capacity ceramic construction with ferrule terminals for clip mounting. It is suitable for protecting converters, diodes, thyristors, triacs, measuring equipment and industrial control apparatus where reliable and rapid circuit protection is required.
Key Advantages
- High-speed FA characteristic provides rapid fault interruption.
- 20 A current rating for electronic and semiconductor circuits.
- 250 V AC voltage rating for industrial applications.
- High-breaking-capacity construction limits damaging fault energy.
- Compact 6.3 × 32 mm cylindrical format.
- UL-recognised range for dependable equipment protection.
Key Features
- Mersen MI6FA semiconductor miniature fuse series.
- 20 A rated current.
- 250 V AC rated voltage.
- Very fast-acting, high-speed FA fuse characteristic.
- 200 A²s clearing I²t at rated voltage.
- Clip-mounted cylindrical fuse construction.
- Ferrule terminal connections.
- Durable ceramic insulating body.
- No integrated fuse operation indicator.
- RoHS and REACH compliant.
Rapid Protection for Semiconductor Equipment
Power semiconductors can be damaged by fault currents that persist for only a short period. High-speed fuses such as the Mersen A084318 respond rapidly to excessive current, helping restrict the let-through energy before significant thermal or electrical damage develops.
The A084318 is particularly suitable for converter and semiconductor applications involving diodes, thyristors and triacs. Its standard 6.3 × 32 mm format enables straightforward installation in a correctly rated compatible fuse clip or fuse holder.
Typical Applications
- Semiconductor power converters.
- Diode and thyristor protection.
- Triac-based control equipment.
- Industrial control apparatus.
- Electronic measuring equipment.
- Automation and process control systems.
