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MERSEN FUSE 5SM 4A MITTELTR. MI5SM25V4
Mersen R217135 MI5SM25V4 medium time-lag 5 x 20 mm IEC miniature fuse rated at 4 A and 250 V AC for industrial electrical distribution and circuit protection.
£0.4125
Why Choose the Mersen R217135 5 x 20 mm Medium Time-Lag Miniature Fuse?
The Mersen R217135 is a high-quality 5 x 20 mm medium time-lag miniature fuse designed to provide dependable overcurrent protection for industrial electrical equipment and electrical distribution circuits. Part of the proven Mersen 5SM IEC Miniature Fuse Series, this fuse is engineered to withstand temporary inrush currents while delivering reliable protection against sustained overloads and short circuits.
Its medium time-delay operating characteristic makes it particularly suitable for applications incorporating transformers, power supplies and inductive loads where short-duration current surges occur during normal start-up. This helps reduce nuisance fuse operation while maintaining dependable circuit protection.
With a rated current of 4 A and a rated voltage of 250 V AC, the Mersen R217135 is ideal for industrial control panels, instrumentation, automation equipment and OEM machinery requiring IEC-compliant miniature fuse protection.
Key Advantages
- Medium time-lag characteristic withstands temporary inrush currents.
- 4 A current rating for dependable industrial circuit protection.
- 250 V AC voltage rating for IEC applications.
- Compact 5 x 20 mm miniature fuse format.
- Helps minimise nuisance fuse operation during equipment start-up.
- Manufactured by trusted electrical protection specialist Mersen.
Key Features
- Mersen 5SM IEC Miniature Fuse Series.
- Model: R217135.
- 4 A rated current.
- 250 V AC rated voltage.
- Medium time-lag operating characteristic.
- 5 x 20 mm IEC fuse format.
- Glass body with silver-plated contacts.
- RoHS compliant construction.
Reliable Protection for Industrial Electrical Equipment
Medium time-lag miniature fuses are designed to tolerate temporary inrush currents generated by transformers, power supplies and inductive equipment while providing dependable protection against prolonged overloads and fault currents. This balance helps improve equipment reliability and reduce unnecessary fuse replacement.
The Mersen R217135 is widely used by panel builders, OEM manufacturers and maintenance engineers requiring dependable IEC miniature fuse protection for industrial control systems and electrical distribution equipment.
Typical Applications
- Industrial control panels.
- Electrical distribution equipment.
- Automation systems.
- Instrumentation equipment.
- Electronic power supplies.
- OEM machinery.
- Control transformers.
- Industrial maintenance applications.
Technical Specifications
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| Current | 4 A | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | Miniature | |
| Fuse Size | 5x20 mm | |
| Fuse Class | Time delay | |
| Voltage | 250 V | |
| Manufacturer | Mersen | |
| Series | 5SM IEC Miniature Fuses | |
| Model | R217135 | |
| Catalogue number | MI5SM25V4 | |
| Product type | Medium time-lag miniature fuse | |
| Fuse size | 5 x 20 mm | |
| Rated current | 4 A | |
| Rated voltage | 250 V AC | |
| Operating characteristic | Medium time-lag | |
| Breaking capacity | 300 A AC | |
| Pre-arcing I²t | 47.7 A²s | |
| Power dissipation | 0.52 W | |
| Maximum voltage drop | 0.09 V | |
| Body material | Glass | |
| Contact material | Silver-plated | |
| RoHS compliant | Yes | |
| EAN | 4086500014866 | |
| HS Code | 85361010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the Mersen R217135 used for?
The Mersen R217135 provides medium time-lag overcurrent protection for industrial electrical equipment, control systems and electrical distribution circuits.
What is the current rating of this fuse?
This fuse has a rated current of 4 A.
What voltage is the fuse designed for?
The R217135 is rated for use on circuits up to 250 V AC.
Is this a time-lag fuse?
Yes. It features a medium time-lag characteristic that tolerates temporary inrush currents while protecting against sustained overloads and short circuits.
Where is this fuse commonly installed?
It is commonly installed in industrial control panels, automation systems, instrumentation, electrical distribution equipment and OEM machinery using compatible 5 x 20 mm fuse holders.
Trusted by Electrical Professionals Worldwide
Mersen miniature fuses are trusted by panel builders, OEM manufacturers and maintenance engineers for delivering dependable, standards-compliant circuit protection across industrial and commercial applications.
