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MERSEN FUSE US222MI US222MI

MERSEN FUSE US222MI US222MI

Mersen N331166 UltraSafe US222MI two-pole modular fuse holder for 22×58 mm cylindrical fuse links with visual blown fuse indicator, two integrated microswitches, IP20 protection and ratings up to 800 V AC and 1000 V DC.

SKU: N331166Alt SKU: US222MIMPN: N331166
Price
List Price £109.40 ex VAT
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£109.40
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Why Choose the Mersen N331166 UltraSafe™ US222MI Fuse Holder?

The Mersen N331166, catalogue reference US222MI, is a premium UltraSafe™ modular fuse holder designed for 22×58 mm cylindrical fuse links. Featuring a two-pole configuration, integrated visual blown fuse indication and two auxiliary microswitches, it provides reliable overcurrent protection whilst enabling both local and remote fuse-status monitoring for critical industrial applications.

Part of the trusted Mersen UltraSafe™ US22 series, the US222MI combines robust thermoplastic construction with IP20 finger-safe protection, ensuring safe installation and maintenance. The integrated microswitches can be connected to PLCs, alarm systems or SCADA equipment, allowing maintenance personnel to identify fuse operation quickly and minimise equipment downtime.

Rated for systems up to 800 V AC (UL), 690 V AC (IEC) and 1,000 V DC, with a maximum current rating of 125 A, the N331166 is ideal for industrial control panels, motor control centres, OEM machinery and power distribution equipment.

Key Advantages

  • Designed for 22×58 mm cylindrical fuse links.
  • Two-pole modular construction.
  • Integrated visual blown fuse indicator.
  • Two auxiliary microswitches for remote fuse-status monitoring.
  • 125 A maximum current rating.
  • Suitable for systems up to 800 V AC / 1,000 V DC.
  • Finger-safe IP20 protection.
  • Pressure-plate terminals provide secure conductor retention.
  • DIN rail mounting enables straightforward installation.

Key Features

  • Mersen UltraSafe™ US22 series.
  • Catalogue number US222MI.
  • Manufacturer part number N331166.
  • Suitable for 22×58 mm cylindrical fuse links.
  • Two-pole configuration.
  • Integrated visual blown fuse indicator.
  • Integrated 2 auxiliary microswitches.
  • 125 A current rating.
  • 800 V AC UL / 690 V AC IEC / 1,000 V DC ratings.
  • Pressure-plate terminal connection.
  • IP20 finger-safe enclosure.
  • DIN rail mounting.

Reliable Protection with Advanced Fuse Monitoring

The Mersen N331166 combines dependable overcurrent protection with both local and remote monitoring capabilities. Its integrated visual indicator allows maintenance personnel to identify an operated fuse immediately, whilst the dual microswitches enable remote signalling to PLCs, HMIs or building management systems for improved maintenance efficiency.

Its UltraSafe™ finger-safe construction, compact modular format and high electrical ratings make it an excellent choice for industrial automation systems, machine building, renewable energy installations and electrical distribution equipment where maximum reliability is essential.

Typical Applications

  • Industrial control panels.
  • Motor control centres.
  • OEM machinery.
  • Industrial automation systems.
  • Power distribution equipment.
  • Renewable energy installations.
  • PLC and SCADA monitored electrical systems.

Technical Specifications

Manufacturer Mersen
Series UltraSafe™ US22
Model US222MI
Manufacturer part number N331166
Product type Modular cylindrical fuse holder
Fuse size 22 × 58 mm
Number of poles 2
Rated 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
Fuse indication Visual blown fuse indicator
Auxiliary signalling 2 integrated microswitches
Terminal type Pressure plate
Protection rating IP20
Mounting type DIN rail mounting
HS Code 85361090
Country of Manufacture Tunisia
Poles 2-pole
Device Type Fuse base / holder
Fuse Type Cylindrical
Fuse Size 22x58 mm
Current 125 A
Voltage 800 V

Frequently Asked Questions

What is the Mersen N331166 used for?

The N331166 is a two-pole modular fuse holder designed for 22×58 mm cylindrical fuse links used to protect industrial AC and DC electrical circuits.

What fuse size is compatible with this holder?

The N331166 is designed specifically for 22×58 mm cylindrical fuse links.

Does the N331166 include fuse indication?

Yes. It features an integrated visual blown fuse indicator together with two auxiliary microswitches for remote fuse-status monitoring.

What are the electrical ratings?

The fuse holder is rated for 125 A and supports systems up to 800 V AC (UL), 690 V AC (IEC) and 1,000 V DC.

Where is the N331166 typically installed?

It is designed for DIN rail mounting inside industrial control panels, switchboards, machinery and power distribution systems.

Trusted by Electrical Professionals Worldwide

Mersen UltraSafe™ fuse holders are trusted by OEMs, panel builders and industrial engineers worldwide for delivering dependable circuit protection, finger-safe operation and advanced local and remote fuse monitoring.

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