Mersen V331172 US223MI UltraSafe three-pole fuse holder for 22 x 58 mm cylindrical fuse links, rated at 125 A with visual indication, microswitch monitoring, DIN rail mounting and IP20 protection.
£144.14
The Mersen V331172, also identified by catalogue number US223MI, is a robust 3-pole UltraSafe™ cylindrical fuse holder designed for reliable overcurrent protection in industrial control panels, machinery and power distribution systems. It accepts 22 × 58 mm cylindrical fuse links and combines high electrical ratings with visual and remote fuse-status indication.
Rated at 125 A, the V331172 supports operating voltages up to 800 V AC and 1000 V DC under UL ratings, with IEC ratings of 690 V AC and 690 V DC. Its three-pole configuration makes it suitable for coordinated protection of three-phase circuits in demanding industrial installations.
The integrated visual indicator and microswitch system helps maintenance engineers identify operated fuses and transmit remote status signals to control or alarm equipment. Its pressure-plate terminals, DIN rail mounting and IP20 finger-safe construction support safe installation, dependable wiring and efficient servicing.
The Mersen V331172 provides a secure mounting and connection point for three 22 × 58 mm cylindrical fuse links. When an overload or short circuit occurs, the installed fuse interrupts the affected pole according to its operating characteristics, helping protect cables, machinery and power distribution equipment.
Its combined visual indicator and microswitch system allows maintenance personnel to identify fuse operation locally while also sending a remote status signal to a PLC, alarm circuit or monitoring system. This can reduce fault-finding time and improve equipment availability in automated industrial installations.
| Phase | Three Phase |
|---|---|
| Manufacturer | Mersen |
| Series | UltraSafe™ US22 |
| Item number | V331172 |
| Catalogue number | US223MI |
| EAN / UPC | 0782001311421 |
| Product type | Cylindrical fuse holder with visual indicator and microswitch |
| Compatible fuse size | 22 × 58 mm |
| Number of poles | 3 |
| Maximum fuse rating | 125 A |
| Rated voltage AC UL | 800 V AC |
| Rated voltage DC UL | 1000 V DC |
| Rated voltage AC IEC | 690 V AC |
| Rated voltage DC IEC | 690 V DC |
| Frequency | 50 / 60 Hz |
| Short-circuit current rating | 100 kA |
| Rated insulation voltage | 750 V |
| Rated impulse withstand voltage | 8 kV |
| Indication system | Visual indicator and microswitch |
| Terminal type | Pressure plate / clip |
| Terminal material | Tin-plated copper |
| Wiring range | 1/0 to 14 AWG |
| Terminal torque | approx. 4 N m |
| Fuse installation | Clip-in |
| Mounting type | DIN rail to EN 60715 |
| Protection rating | IP20 |
| Housing material | Polyamide |
| Dimensions (H × W × D) | approx. 127.5 × 104.9 × 76.5 mm |
| Product weight | approx. 0.675 kg |
| Compliance | RoHS compliant |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
The V331172 is used to mount and connect three 22 × 58 mm cylindrical fuse links while providing local and remote fuse-status indication in industrial AC and DC systems.
The Mersen catalogue number is US223MI.
It is designed for 22 × 58 mm cylindrical fuse links rated up to 125 A.
The fuse holder is rated up to 800 V AC and 1000 V DC under UL requirements, with IEC ratings of 690 V AC and 690 V DC.
The V331172 includes a visual fuse-status indicator and a microswitch that can provide remote signalling to control, monitoring or alarm equipment.
Mersen UltraSafe™ fuse holders are widely specified by electrical panel builders, OEM manufacturers and industrial engineers for high-performance circuit protection, dependable status monitoring and enhanced operator safety.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...