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MERSEN FUSE 250V 5SF 1A 5.20 MI5SF25V1
Mersen L090515 MI5SF25V1 fast-acting 5 x 20 mm glass miniature fuse rated at 1 A and 250 V AC for industrial and electronic circuit protection.
Why Choose the Mersen L090515 5SF Fast-Acting Miniature Fuse?
The Mersen L090515 is a dependable fast-acting miniature cartridge fuse designed to provide rapid protection against overloads and short circuits in industrial electrical equipment, electronic assemblies and control circuits. Also identified by the catalogue reference MI5SF25V1, it forms part of the trusted Mersen 5SF IEC miniature fuse series.
With a rated current of 1 A and a rated voltage of 250 V AC, the L090515 interrupts fault currents quickly, helping to protect sensitive equipment from damage. Its fast-acting characteristic makes it particularly suitable for circuits where immediate protection is required and temporary inrush currents are minimal.
Manufactured in the standard 5 × 20 mm glass cartridge format, the fuse is compatible with a wide range of miniature fuse holders and is suitable for industrial control panels, instrumentation, electronic equipment and OEM machinery requiring dependable overcurrent protection.
Key Advantages
- Fast-acting characteristic provides rapid overcurrent protection.
- Standard 5 × 20 mm miniature fuse format.
- 1 A current rating for electrical and electronic circuits.
- 250 V AC rated voltage.
- 35 A AC breaking capacity.
- Glass body enables visual inspection of the fuse element.
- Compatible with standard IEC 5 × 20 mm fuse holders.
Key Features
- Mersen 5SF IEC miniature fuse series.
- MI5SF25V1 catalogue reference.
- 1 A rated current.
- 250 V AC rated voltage.
- Fast-acting operating characteristic.
- 35 A AC breaking capacity.
- 1.6 A²s pre-arcing I²t.
- Glass cartridge construction.
- Clip-mounted installation.
- RoHS compliant.
Fast Protection for Sensitive Electrical Equipment
Fast-acting miniature fuses are designed to disconnect electrical circuits rapidly when excessive current is detected. Their quick response helps minimise damage to sensitive electronic components, wiring and equipment by limiting the amount of fault energy released into the circuit.
The Mersen 5SF range is widely used throughout industrial automation, electronic assemblies and OEM machinery where rapid overcurrent protection and dependable performance are essential.
Typical Applications
- Industrial control panels.
- Electronic equipment.
- Instrumentation systems.
- Power supplies.
- OEM machinery.
- Electrical distribution circuits.
Technical Specifications
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| Current | 1 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Fast acting | |
| Manufacturer | Mersen | |
| Series | 5SF IEC Miniature Fuses | |
| Model | L090515 | |
| Catalogue number | MI5SF25V1 | |
| Product type | Fast-acting miniature cartridge fuse | |
| Fuse size | 5 × 20 mm | |
| Rated current | 1 A | |
| Rated voltage | 250 V AC | |
| Supply type | AC | |
| Operating characteristic | Fast acting | |
| Breaking capacity | 35 A AC | |
| Pre-arcing I²t | 1.6 A²s | |
| Power dissipation at rated current | 0.28 W | |
| Maximum voltage drop | 0.10 V | |
| Body material | Glass | |
| Mounting method | Clip mounting | |
| Product diameter | 5 mm | |
| Product length | 20 mm | |
| Standard | IEC 60127-2 | |
| Compliance | CE, UKCA, REACH and RoHS compliant | |
| EAN / UPC | 3605340091021 |
Frequently Asked Questions
What is the Mersen L090515 used for?
The Mersen L090515 provides rapid overcurrent and short-circuit protection for industrial electrical and electronic equipment.
What is the current rating of this fuse?
The L090515 has a rated current of 1 A.
What voltage is the fuse rated for?
This miniature fuse is designed for circuits operating up to 250 V AC.
Is the L090515 a fast-acting or time-lag fuse?
The L090515 is a fast-acting miniature fuse, making it suitable for circuits that require immediate protection against fault currents.
Which fuse holders are compatible?
The fuse is designed for correctly rated fuse holders that accept standard 5 × 20 mm miniature cartridge fuses.
Trusted by Electrical Engineers Worldwide
Mersen miniature fuses are trusted worldwide by panel builders, machine manufacturers and maintenance engineers for dependable circuit protection, consistent quality and reliable long-term performance.
