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MERSEN FUSE 250V FA 0,5 A 5.20 250VFA0.5005X20
Mersen H084003 MI5FA25V0.5 high-speed 5 x 20 mm ceramic semiconductor fuse rated at 0.5 A and 250 V AC for clip mounting.
£1.92
Why Choose the Mersen H084003 High-Speed Miniature Fuse?
The Mersen H084003, catalogue reference MI5FA25V0.5, is a very fast-acting miniature semiconductor fuse designed to protect sensitive electronic and semiconductor devices from damaging overcurrents and short circuits. Part of Mersen's proven 5 × 20 mm FA series, it delivers dependable high-speed protection for industrial electronics, instrumentation and power control equipment.
With a rated current of 0.5 A and a 250 V AC voltage rating, the H084003 rapidly interrupts fault currents to minimise the energy reaching sensitive electronic components. Its ceramic construction and high breaking capacity make it ideal for protecting semiconductor devices and precision control circuits.
Manufactured in the industry-standard 5 × 20 mm cylindrical format, the fuse is designed for clip mounting in compatible fuse holders. Its compact dimensions allow straightforward integration into industrial control panels, power supplies, measuring equipment and OEM electronic assemblies.
Key Advantages
- Very fast-acting protection for sensitive semiconductor components.
- 0.5 A rated current for low-current electronic circuits.
- 250 V AC rated voltage for industrial and electronic equipment.
- Compact 5 × 20 mm ceramic construction.
- Clip mounting enables simple installation and replacement.
- High breaking capacity helps safely clear fault currents.
Key Features
- Mersen FA semiconductor miniature fuse series.
- Very fast-acting (FA) characteristic.
- 0.5 A rated current.
- 250 V AC rated voltage.
- 5 × 20 mm ceramic body.
- Clip mounting configuration.
- 10 kA breaking capacity.
- UL recognised, RoHS, REACH and UKCA compliant.
Reliable Protection for Sensitive Electronics
Very fast-acting semiconductor fuses are engineered to disconnect fault currents before excessive thermal energy can damage sensitive electronic components. They are commonly used to protect semiconductor devices, instrumentation, control electronics and industrial power supplies.
The Mersen H084003 combines compact dimensions with dependable high-speed operation, making it an excellent choice for industrial automation, OEM equipment and electronic control systems where reliable circuit protection is essential.
Typical Applications
- Semiconductor protection.
- Industrial control equipment.
- Electronic power supplies.
- Instrumentation and measurement systems.
- Automation and control panels.
- OEM electronic equipment.
Technical Specifications
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| Current | 0.5 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature, Semiconductor | |
| Fuse Class | Fast acting | |
| Manufacturer | Mersen | |
| Item number | H084003 | |
| Catalogue number | MI5FA25V0.5 | |
| Product type | High-speed miniature semiconductor fuse | |
| Series | Semiconductor Miniature Fuses Size 5 × 20 FA 125V-250V | |
| Rated current | 0.5 A | |
| Rated voltage | 250 V AC | |
| Current type | AC | |
| Operating characteristic | Very fast-acting (FA) | |
| Fuse dimensions | 5 × 20 mm | |
| Mounting type | Clip mounting | |
| Body material | Ceramic | |
| Breaking capacity | 10 kA | |
| Pre-arcing I²t | 0.05 A²s | |
| Clearing I²t | 0.15 A²s | |
| EAN / UPC | 3605340059359 |
Frequently Asked Questions
What is the Mersen H084003 used for?
The Mersen H084003 protects sensitive semiconductor and electronic circuits against overcurrent and short-circuit faults.
What is the current rating of the H084003 fuse?
The fuse has a rated current of 0.5 A.
What voltage is the Mersen H084003 rated for?
The H084003 is rated for operation at up to 250 V AC.
How is the Mersen H084003 installed?
The fuse is designed for clip mounting in a compatible 5 × 20 mm fuse holder.
Why is a very fast-acting fuse important?
A very fast-acting fuse interrupts fault currents quickly, helping protect sensitive semiconductor components from damage caused by excessive electrical energy.
Trusted Circuit Protection from Mersen
Mersen high-speed miniature semiconductor fuses are trusted by OEMs, panel builders and industrial engineers worldwide to provide dependable protection for sensitive electronic equipment and power conversion systems.
