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MERSEN FUSE 5SM 5A MITTELTR. MI5SM25V5
Mersen E218159 MI5SM25V5 medium time-lag miniature fuse rated at 5 A and 250 V AC, with a 5 x 20 mm glass cartridge and 300 A breaking capacity.
£0.4125
Why Choose the Mersen E218159 MI5SM25V5 Miniature Fuse?
The Mersen E218159 (MI5SM25V5) is a dependable 5 x 20 mm medium time-lag miniature fuse designed to protect electrical distribution circuits, industrial equipment and control systems against overloads and short circuits. As part of the Mersen 5SM IEC miniature fuse series, it provides reliable overcurrent protection while tolerating brief current surges during normal equipment operation.
This miniature fuse has a rated current of 5 A and a rated voltage of 250 V AC. Its medium time-lag operating characteristic helps prevent unnecessary fuse operation when equipment experiences short-duration inrush currents, while still interrupting sustained overloads and fault currents.
Manufactured in the standard 5 x 20 mm glass cartridge format, the Mersen E218159 features nickel-plated brass contact caps and an extinguishing agent for dependable fault interruption. Its compact dimensions make it suitable for compatible fuse clips and holders used in industrial machinery, electrical equipment, power supplies and automation systems.
Key Advantages
- Reliable medium time-lag overcurrent protection.
- 5 A rated current for industrial and electrical equipment.
- 250 V AC rated voltage.
- Tolerates brief start-up and inrush currents.
- 300 A AC breaking capacity for dependable fault interruption.
- Standard 5 x 20 mm miniature fuse dimensions.
Key Features
- Mersen 5SM IEC miniature fuse series.
- 5 A rated current.
- 250 V AC rated voltage.
- Medium time-lag operating characteristic.
- 5 x 20 mm glass cartridge format.
- 300 A AC breaking capacity.
- Nickel-plated brass contact caps.
- RoHS-compliant construction.
Reliable Medium Time-Lag Circuit Protection
Medium time-lag fuses such as the Mersen E218159 are designed to withstand temporary current surges that can occur when transformers, power supplies, motors and capacitive loads are energised. This helps reduce nuisance fuse operation during normal equipment start-up.
If an overload or short circuit continues beyond the permitted time-current limits, the fuse element safely interrupts the electrical path. Its glass cartridge construction, extinguishing agent and 300 A breaking capacity help protect wiring, control components and connected equipment from excessive current.
Typical Applications
- Industrial electrical equipment.
- Electrical distribution circuits.
- Control panels and automation systems.
- Power supplies and transformer circuits.
- Electronic equipment and assemblies.
- OEM machinery and instrumentation.
Technical Specifications
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| Current | 5 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 | |
| Part number | E218159 | |
| Catalogue reference | MI5SM25V5 | |
| EAN | 4086500014873 | |
| Product type | Medium time-lag miniature fuse | |
| Fuse size | 5 x 20 mm | |
| Rated current | 5 A | |
| Rated voltage | 250 V AC | |
| Current type | AC | |
| Operating characteristic | Medium time-lag | |
| Breaking capacity | 300 A AC | |
| Pre-arcing I²t | 31.3 A²s | |
| Power dissipation at rated current | 0.91 W | |
| Maximum voltage drop | 0.13 V | |
| Body material | Glass | |
| Contact caps | Nickel-plated brass | |
| Extinguishing agent | Yes | |
| Mounting type | Clip mounting | |
| Product diameter | 5.1 mm | |
| Product length | 20 mm | |
| Product weight | Approx. 1.2 g | |
| Applicable standard | IEC 60127-2 Sheet 2 | |
| RoHS compliant | Yes | |
| HS Code | 85361010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the Mersen E218159 used for?
The Mersen E218159 provides medium time-lag overload and short-circuit protection for electrical distribution circuits, industrial equipment and automation systems.
What is the current rating of the Mersen E218159?
The fuse has a rated current of 5 A.
What voltage is this miniature fuse rated for?
The Mersen E218159 is rated for operation at up to 250 V AC.
What does medium time-lag mean?
A medium time-lag fuse tolerates brief inrush currents while still operating during sustained overloads and short circuits.
What is the breaking capacity of the Mersen E218159?
The fuse has a rated AC breaking capacity of 300 A.
Trusted by Electrical Professionals Worldwide
Mersen miniature fuses are widely used by panel builders, OEMs and maintenance engineers for dependable circuit protection across industrial automation, electrical distribution and electronic equipment.
