Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Mersen R222172 MI5SM25V16 medium time-lag 5 x 20 mm IEC miniature fuse rated at 16 A and 250 V AC for industrial electrical distribution and circuit protection.
£0.4125
The Mersen R222172 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 tolerate 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 brief current surges occur during normal start-up. This helps minimise nuisance fuse operation while maintaining dependable circuit protection.
With a rated current of 16 A and a rated voltage of 250 V AC, the Mersen R222172 is ideal for industrial control panels, electrical distribution equipment, instrumentation and OEM machinery requiring IEC-compliant miniature fuse protection.
Medium time-lag miniature fuses are designed to tolerate temporary inrush currents generated by transformers, switched-mode power supplies and inductive equipment while providing dependable protection against prolonged overloads and fault currents. This balance improves equipment reliability and reduces unnecessary fuse replacement.
The Mersen R222172 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.
Tick the specs you need, then view products that match.
| Current | 16 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 | R222172 | |
| Catalogue number | MI5SM25V16 | |
| Product type | Medium time-lag miniature fuse | |
| Fuse size | 5 x 20 mm | |
| Rated current | 16 A | |
| Rated voltage | 250 V AC | |
| Operating characteristic | Medium time-lag | |
| Breaking capacity | 300 A AC | |
| Melting I²t | 705 A²s | |
| Power dissipation at rated current | 2.14 W | |
| Body material | Glass | |
| Mounting | Clip | |
| Product diameter | 5.1 mm | |
| Product length | 20 mm | |
| RoHS compliant | Yes | |
| EAN | 4086500014910 | |
| HS Code | 85361050 | |
| Country of Manufacture | Germany |
The Mersen R222172 provides medium time-lag overcurrent protection for industrial electrical equipment, control systems and electrical distribution circuits.
This fuse has a rated current of 16 A.
The R222172 is rated for use on circuits up to 250 V AC.
Yes. It features a medium time-lag characteristic that tolerates temporary inrush currents while protecting against sustained overloads and short circuits.
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.
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.
We use cookies
We use essential cookies to run this site, your basket and checkout. With your permission we'd also like to use analytics and advertising cookies to understand how the site is used and to measure our adverts.