Mersen M331165 UltraSafe US222M two-pole modular fuse holder for 22×58 mm cylindrical fuse links with integrated dual microswitches, IP20 protection and ratings up to 800 V AC and 1000 V DC.
£78.18
The Mersen M331165, catalogue number US222M, is a premium UltraSafe™ modular fuse holder designed for 22×58 mm cylindrical fuse links. Featuring a two-pole configuration with integrated dual microswitches, it provides reliable circuit protection while enabling remote fuse-status monitoring for industrial automation and electrical distribution systems.
Manufactured as part of the trusted Mersen UltraSafe™ US22 series, the US222M combines robust thermoplastic construction with IP20 finger-safe protection, ensuring safe installation and maintenance. The integrated microswitches allow connection to PLCs, alarms or supervisory systems, making fault detection faster and reducing equipment downtime.
Suitable for industrial AC and DC installations, the M331165 supports systems up to 800 V AC (UL), 690 V AC (IEC) and 1,000 V DC, with a maximum current rating of 125 A. Its DIN rail mounting design makes it ideal for modern control panels, OEM machinery and power distribution equipment.
The Mersen M331165 combines dependable fuse protection with integrated signalling capabilities, allowing electrical engineers to monitor fuse operation remotely. The dual microswitch arrangement can be connected to PLCs or monitoring systems, helping maintenance teams identify faults quickly and minimise production downtime.
Its UltraSafe™ finger-safe construction, compact modular format and high electrical ratings make it well suited to industrial machinery, renewable energy systems, motor control centres and modern electrical distribution panels.
| Manufacturer | Mersen |
|---|---|
| Series | UltraSafe™ US22 |
| Model | US222M |
| Manufacturer part number | M331165 |
| Product type | Modular cylindrical fuse holder |
| Fuse size | 22 × 58 mm |
| Number of poles | 2 |
| Maximum current | 125 A |
| Rated voltage (UL AC) | 800 V AC |
| Rated voltage (IEC AC) | 690 V AC |
| Rated voltage (DC) | 1,000 V DC |
| Frequency | 50 / 60 Hz |
| Auxiliary contacts | 2 integrated microswitches |
| Terminal type | Pressure plate |
| Protection rating | IP20 |
| Mounting type | DIN rail mounting |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
The M331165 is a two-pole modular fuse holder for 22×58 mm cylindrical fuse links used to protect industrial AC and DC electrical circuits.
It is designed specifically for 22×58 mm cylindrical fuse links.
Yes. It incorporates two integrated microswitches for remote fuse-status monitoring and signalling.
The holder supports systems up to 800 V AC (UL), 690 V AC (IEC), 1,000 V DC and a maximum current of 125 A.
It is designed for DIN rail mounting inside industrial control panels, switchboards, machinery and electrical distribution equipment.
Mersen UltraSafe™ fuse holders are trusted by OEMs, panel builders and industrial engineers for delivering dependable circuit protection, finger-safe operation and reliable remote monitoring in demanding industrial environments.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...