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MERSEN FUSE 250V 5ST 2,5A 5.20 MI5ST25V2,5
Mersen W090547 MI5ST25V2.5 2.5 A time-delay 5 x 20 mm miniature fuse rated at 250 V AC for industrial electrical and electronic circuit protection.
Why Choose the Mersen W090547 5ST Miniature Fuse?
The Mersen W090547 is a dependable time-delay glass miniature cartridge fuse developed to protect electrical distribution circuits and industrial equipment against overloads and short circuits. Part of the Mersen 5ST IEC miniature fuse series, it is specifically designed to withstand temporary inrush currents while providing reliable protection against sustained overcurrent conditions.
With a rated current of 2.5 A and a rated voltage of 250 V AC, the W090547 is ideal for protecting control circuits, transformers, power supplies, motors and automation equipment. Its time-delay characteristic reduces nuisance fuse operation during equipment start-up while maintaining dependable fault protection.
Manufactured in the industry-standard 5 × 20 mm glass cartridge format, the fuse installs easily into compatible miniature fuse holders. Its compact construction makes it suitable for OEM equipment, industrial control panels and replacement maintenance applications.
Key Advantages
- Time-delay characteristic withstands temporary inrush currents.
- 2.5 A rated current for industrial and commercial electrical circuits.
- 250 V AC rated voltage for low-voltage equipment.
- Standard 5 × 20 mm miniature cartridge format.
- Reliable protection against overloads and short circuits.
- Manufactured by trusted circuit protection specialist Mersen.
Key Features
- Mersen 5ST IEC miniature fuse series.
- Time-delay operating characteristic.
- 2.5 A rated current.
- 250 V AC rated voltage.
- 35 A breaking capacity.
- 5 × 20 mm glass cartridge construction.
- Compatible with standard miniature fuse holders.
- RoHS compliant.
Reliable Protection for Equipment with Inrush Current
Time-delay miniature fuses are designed to tolerate temporary current surges that occur when transformers, motors and power supplies are energised. This controlled response helps prevent nuisance fuse operation while maintaining dependable protection against sustained overloads and short-circuit faults.
The Mersen W090547 combines a 2.5 A current rating with a standard 5 × 20 mm cartridge design, making it suitable for industrial control systems, instrumentation and OEM electrical equipment requiring reliable circuit protection.
Typical Applications
- Industrial control panels.
- Power supplies.
- Control transformers.
- Motor control circuits.
- Instrumentation equipment.
- OEM electrical machinery.
Technical Specifications
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| Current | 2.5 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | 5ST IEC Miniature Fuses | |
| Model | W090547 | |
| Manufacturer reference | MI5ST25V2.5 | |
| Product type | Time-delay miniature cartridge fuse | |
| Rated current | 2.5 A | |
| Rated voltage | 250 V AC | |
| Fuse characteristic | Time delay | |
| Fuse size | 5 × 20 mm | |
| Breaking capacity | 35 A | |
| Pre-arcing I²t | 61.2 A²s | |
| Power loss at rated current | 0.45 W | |
| Maximum voltage drop | 0.07 V | |
| Body material | Glass | |
| Supply type | AC | |
| Standard | IEC 60127-2 | |
| RoHS compliant | Yes | |
| GTIN / EAN | 3605340091922 |
Frequently Asked Questions
What is the Mersen W090547 used for?
The W090547 provides time-delay overcurrent protection for industrial electrical equipment, transformers, motors and power supplies.
What is the current rating of the Mersen W090547?
The fuse has a rated current of 2.5 A.
What voltage is the W090547 rated for?
The Mersen W090547 is rated for operation at up to 250 V AC.
Is the Mersen W090547 a fast-acting fuse?
No. It is a time-delay 5ST fuse designed to tolerate temporary inrush currents before operating during sustained overload conditions.
What size is the Mersen W090547 fuse?
It uses the industry-standard 5 × 20 mm miniature cartridge format.
Trusted by Electrical Professionals Worldwide
Mersen miniature fuses are trusted worldwide by panel builders, machine manufacturers and maintenance engineers for dependable protection of industrial electrical and electronic systems.
