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MERSEN FUSE 250V SU 3,15 A 5.20 MI5SU25V3,15
Mersen K087502 MI5SM25V3.15 medium time-lag 5 x 20 mm glass miniature fuse rated at 3.15 A and 250 V AC for industrial and electronic circuit protection.
£7.93
Why Choose the Mersen K087502 5SM Medium Time-Lag Miniature Fuse?
The Mersen K087502 is a high-quality 5 × 20 mm medium time-lag miniature cartridge fuse designed to provide dependable overcurrent protection for industrial electrical equipment, electronic assemblies and OEM machinery. Also identified by the catalogue reference MI5SM25V3.15, it forms part of the proven Mersen 5SM IEC miniature fuse series.
With a rated current of 3.15 A and a rated voltage of 250 V AC, the K087502 is designed to tolerate temporary inrush currents whilst providing reliable protection against sustained overloads and short circuits. Its medium time-lag characteristic helps reduce nuisance fuse operation in circuits containing transformers, power supplies and inductive loads.
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, power supplies and electrical distribution equipment requiring dependable circuit protection.
Key Advantages
- Medium time-lag characteristic reduces nuisance fuse operation.
- Standard 5 × 20 mm miniature fuse format.
- 3.15 A current rating for industrial and electronic applications.
- 250 V AC voltage rating.
- 80 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 5SM IEC miniature fuse series.
- MI5SM25V3.15 catalogue reference.
- 3.15 A rated current.
- 250 V AC rated voltage.
- Medium time-lag operating characteristic.
- 80 A AC breaking capacity.
- 48.8 A²s pre-arcing I²t.
- Glass cartridge construction.
- Clip-mounted installation.
- RoHS compliant.
Reliable Circuit Protection for Industrial Equipment
Medium time-lag miniature fuses are designed to withstand brief start-up currents whilst providing dependable protection against sustained overloads and fault conditions. This reduces unnecessary fuse replacement during normal equipment operation whilst maintaining reliable circuit protection.
The Mersen 5SM range is widely used in industrial control panels, instrumentation, power supplies and OEM machinery where dependable overcurrent protection and long service life are essential.
Typical Applications
- Industrial control panels.
- Electronic equipment.
- Power supplies.
- Instrumentation systems.
- OEM machinery.
- Electrical distribution circuits.
Technical Specifications
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| Current | 3.15 A | |
|---|---|---|
| Voltage | 250 V | |
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Manufacturer | Mersen | |
| Series | 5SM IEC Miniature Fuses | |
| Model | K087502 | |
| Catalogue number | MI5SM25V3.15 | |
| Product type | Medium time-lag miniature cartridge fuse | |
| Fuse size | 5 × 20 mm | |
| Rated current | 3.15 A | |
| Rated voltage | 250 V AC | |
| Supply type | AC | |
| Operating characteristic | Medium time-lag | |
| Breaking capacity | 80 A AC | |
| Pre-arcing I²t | 48.8 A²s | |
| Power dissipation at rated current | 0.47 W | |
| Maximum voltage drop | 0.11 V | |
| Body material | Glass | |
| Mounting method | Clip mounting | |
| Product diameter | 5 mm | |
| Product length | 20 mm | |
| Compliance | CE, UKCA, REACH and RoHS compliant | |
| EAN / UPC | 4086500014859 |
Frequently Asked Questions
What is the Mersen K087502 used for?
The Mersen K087502 protects industrial electrical and electronic equipment against overloads and short circuits whilst allowing temporary inrush currents during normal operation.
What is the current rating of this fuse?
The K087502 has a rated current of 3.15 A.
What voltage is the fuse rated for?
This miniature fuse is designed for circuits operating up to 250 V AC.
Is the K087502 a fast or time-lag fuse?
The K087502 is a medium time-lag miniature fuse, making it suitable for circuits that experience temporary start-up 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.
