Why Choose the Mersen M331165 UltraSafe™ US222M Fuse Holder?
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.
Key Advantages
- Designed for 22×58 mm cylindrical fuse links.
- Two-pole modular fuse holder.
- Integrated dual microswitches for remote status monitoring.
- Supports systems up to 800 V AC / 1,000 V DC.
- 125 A maximum current rating.
- Finger-safe IP20 protection.
- Pressure plate terminals provide secure conductor retention.
- DIN rail mounting for fast installation.
Key Features
- Mersen UltraSafe™ US22 series.
- Catalogue number US222M.
- Reference number M331165.
- Accepts 22×58 mm cylindrical fuse links.
- Two-pole configuration.
- Integrated 2 microswitches.
- 125 A maximum current.
- 800 V AC UL / 690 V AC IEC / 1,000 V DC ratings.
- Pressure plate terminals.
- IP20 finger-safe enclosure.
- DIN rail mounting.
- High-strength thermoplastic construction.
Reliable Protection with Remote Monitoring
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.
Typical Applications
- Industrial control panels.
- OEM machinery.
- Motor control centres.
- Power distribution equipment.
- Industrial automation systems.
- Renewable energy installations.
- PLC-controlled electrical systems.
