Why Choose the Mersen K207147 5SM Medium Time-Lag Miniature Fuse?
The Mersen K207147 is a compact and reliable medium time-lag miniature cartridge fuse designed to protect electrical distribution circuits and industrial equipment against sustained overloads and short circuits. Also identified by the catalogue reference MI5SM25V0.25, it forms part of the Mersen 5SM IEC miniature fuse series.
With a rated current of 0.25 A, equivalent to 250 mA, and a rated voltage of 250 V AC, the K207147 is suitable for low-current circuits that may experience temporary start-up or switching currents. Its medium time-lag characteristic allows brief, harmless current surges to pass while maintaining dependable protection against sustained fault conditions.
The fuse features a standard 5 × 20 mm glass cartridge construction for straightforward installation in compatible fuse holders. Its transparent body permits visual inspection of the fuse element, supporting efficient maintenance and fault diagnosis in control panels, electronic equipment and OEM machinery.
Key Advantages
- Medium time-lag characteristic tolerates temporary inrush currents.
- 0.25 A current rating for sensitive low-current circuits.
- 250 V AC voltage rating.
- Standard 5 × 20 mm miniature fuse format.
- Glass cartridge body enables visual inspection of the fuse element.
- Suitable for electrical distribution and industrial protection applications.
- Compatible with correctly rated 5 × 20 mm miniature fuse holders.
Key Features
- Mersen 5SM IEC miniature fuse series.
- MI5SM25V0.25 catalogue reference.
- 0.25 A / 250 mA rated current.
- 250 V AC rated voltage.
- Medium time-lag operating characteristic.
- Compact 5 × 20 mm dimensions.
- Glass cylindrical cartridge body.
- Clip-mounted installation format.
- Designed for industrial electrical distribution circuits.
- Manufactured to IEC miniature fuse requirements.
Reliable Protection for Circuits with Temporary Inrush Current
Medium time-lag miniature fuses are designed to tolerate short-duration current surges caused by transformers, power supplies, relays and other inductive or capacitive loads. This controlled response helps prevent nuisance fuse operation during normal equipment start-up or switching.
If an overload persists or a short circuit occurs, the fuse element disconnects the protected circuit. The Mersen 5SM range therefore provides a practical balance between inrush-current tolerance and dependable overcurrent protection for industrial and electronic equipment.
Typical Applications
- Industrial control panels.
- Electrical distribution circuits.
- Power supplies and transformers.
- Electronic equipment and assemblies.
- Instrumentation and monitoring systems.
- OEM machinery and automation equipment.
