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MERSEN FUSE 250V 5ST 0,5A 5.20 MI5ST25V0,5
Mersen N090540 MI5ST25V0.5 time-delay 5 x 20 mm glass cartridge fuse rated at 0.5 A and 250 V AC for industrial and electronic circuit protection.
Why Choose the Mersen N090540 5 x 20 mm Time-Delay Glass Cartridge Fuse?
The Mersen N090540, catalogue reference MI5ST25V0.5, is a high-quality 5 x 20 mm time-delay glass cartridge fuse designed to provide dependable overcurrent protection for industrial equipment, electrical distribution circuits and electronic systems. Rated at 0.5 A and 250 V AC, it protects sensitive equipment whilst tolerating the temporary inrush currents commonly associated with motors, transformers and power supplies.
Part of the trusted Mersen 5ST IEC miniature fuse series, the N090540 combines a time-delay operating characteristic with a compact glass cartridge design. This makes it ideal for industrial automation, OEM machinery, instrumentation and electrical control equipment where nuisance fuse operation must be minimised without compromising circuit protection.
Manufactured to IEC miniature fuse standards, the fuse installs into standard 5 x 20 mm fuse holders and delivers consistent electrical performance in demanding industrial applications. Its transparent glass body also enables rapid visual inspection during maintenance.
Key Advantages
- Compact 5 x 20 mm miniature cartridge fuse.
- 0.5 A current rating for low-current circuit protection.
- 250 V AC rated for industrial and commercial applications.
- Time-delay characteristic withstands temporary inrush currents.
- Transparent glass body allows quick visual inspection.
- Manufactured by trusted circuit protection specialist Mersen.
Key Features
- Mersen 5ST IEC miniature fuse series.
- Catalogue number: MI5ST25V0.5.
- Manufacturer reference: N090540.
- Rated current: 0.5 A.
- Rated voltage: 250 V AC.
- Fuse characteristic: Time-delay (T).
- Fuse size: 5 x 20 mm.
- Breaking capacity: 35 A.
- Glass body construction.
- RoHS compliant.
Reliable Protection for Industrial Equipment
Time-delay cartridge fuses are engineered to tolerate temporary current surges that occur during normal equipment start-up whilst providing dependable protection against sustained overloads and short circuits. This reduces unnecessary fuse replacement whilst maintaining reliable protection for connected electrical equipment.
The Mersen N090540 is widely used in industrial control panels, instrumentation, automation equipment, transformers and power supplies where dependable overcurrent protection is essential.
Typical Applications
- Industrial control panels.
- Automation equipment.
- Electronic power supplies.
- Instrumentation systems.
- Control transformers.
- OEM electrical assemblies.
- Industrial machinery.
- Electrical maintenance and repair.
Technical Specifications
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| Current | 0.5 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | 5ST IEC Miniature Fuses | |
| Model | N090540 | |
| Catalogue number | MI5ST25V0.5 | |
| Product type | Time-delay glass cartridge fuse | |
| Rated current | 0.5 A | |
| Rated voltage | 250 V AC | |
| Current type | AC | |
| Fuse characteristic | Time-delay | |
| Fuse size | 5 x 20 mm | |
| Breaking capacity | 35 A | |
| Pre-arcing I²t | 0.95 A²s | |
| Power dissipation | 0.13 W | |
| Maximum voltage drop | 0.12 V | |
| Body material | Glass | |
| RoHS compliant | Yes | |
| EAN | 3605340091717 |
Frequently Asked Questions
What is the Mersen N090540 used for?
The Mersen N090540 protects industrial electrical equipment, electronic systems and control circuits against sustained overloads and short circuits.
What are the electrical ratings?
The fuse is rated at 0.5 A with a maximum operating voltage of 250 V AC.
What does the time-delay characteristic mean?
A time-delay fuse tolerates temporary inrush currents during equipment start-up whilst still providing dependable protection against sustained overloads and short circuits.
What size is the fuse?
The Mersen N090540 is manufactured in the industry standard 5 x 20 mm miniature glass cartridge format.
Where is this fuse commonly installed?
It is commonly installed in industrial control panels, automation equipment, power supplies, instrumentation systems and OEM electrical assemblies.
Trusted by Electrical Professionals Worldwide
Mersen miniature fuses are trusted by OEM manufacturers, panel builders and maintenance engineers for dependable circuit protection across industrial automation, electrical control systems and electronic equipment.
