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MERSEN FUSE US222M2I US222M2I

MERSEN FUSE US222M2I US222M2I

Mersen Q331168 UltraSafe US222M2I two-pole DIN rail fuse holder for 22 x 58 mm cylindrical fuse links with visual indication, two microswitches and IP20 finger-safe protection.

SKU: Q331168Alt SKU: US222M2IMPN: Q331168
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List Price £133.02 ex VAT
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£133.02
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Why Choose the Mersen Q331168 UltraSafe™ US222M2I Fuse Holder?

The Mersen Q331168, catalogue number US222M2I, is a premium two-pole modular fuse holder designed for 22 × 58 mm cylindrical fuse links. Part of the advanced Mersen UltraSafe™ US22 series, it delivers dependable overcurrent protection while combining both visual blown-fuse indication and dual auxiliary microswitches for comprehensive local and remote fuse monitoring.

Designed for industrial control panels, machinery and power distribution equipment, the US222M2I features a finger-safe IP20 enclosure, including during fuse replacement. The integrated indication system enables maintenance personnel and PLCs to identify blown fuses rapidly, helping minimise downtime and improve system availability.

Rated at 125 A, the Q331168 supports applications up to 800 V AC and 1000 V DC (UL) and 690 V AC (IEC). Its pressure-plate terminals and DIN rail mounting provide secure installation and reliable long-term performance in demanding industrial environments.

Key Advantages

  • Reliable two-pole modular fuse holder for industrial power systems.
  • Designed for 22 × 58 mm cylindrical fuse links.
  • 125 A thermal current rating.
  • Integrated visual blown-fuse indicator.
  • Two auxiliary microswitches for remote fuse monitoring.
  • Finger-safe IP20 protection, including during fuse replacement.
  • DIN rail mounting for straightforward installation.
  • Ideal for OEM machinery, switchboards and automation panels.

Key Features

  • Mersen UltraSafe™ US22 series.
  • US222M2I catalogue designation.
  • Two-pole configuration.
  • Compatible with 22 × 58 mm cylindrical fuse links.
  • 125 A rated current.
  • 800 V AC / 1000 V DC UL ratings.
  • 690 V AC IEC rating.
  • Integrated visual fuse indicator.
  • Two integrated microswitches for remote signalling.
  • Pressure-plate terminals and DIN rail mounting.

Reliable Circuit Protection with Advanced Monitoring

The Mersen Q331168 provides secure installation for 22 × 58 mm cylindrical fuse links while protecting industrial electrical circuits against overloads and short circuits. Its finger-safe construction supports safer maintenance without compromising accessibility.

The combination of a visual blown-fuse indicator and two auxiliary microswitches enables both local inspection and remote status monitoring through PLCs or supervisory control systems. This makes the US222M2I particularly suitable for critical industrial applications where rapid fault detection helps maximise equipment uptime.

Typical Applications

  • Industrial control panels.
  • Motor control centres.
  • Power distribution systems.
  • Variable speed drive protection.
  • OEM machinery.
  • Automation equipment.
  • Renewable energy installations.
  • Electrical switchboards.

Technical Specifications

Manufacturer Mersen
Series UltraSafe™ US22
Catalogue number US222M2I
Manufacturer part number Q331168
Product type Modular cylindrical fuse holder
Fuse size 22 × 58 mm
Number of poles 2
Rated current 125 A
Rated voltage AC (UL) 800 V
Rated voltage DC (UL) 1000 V
Rated voltage AC (IEC) 690 V
Frequency 50 / 60 Hz
Protection rating IP20
Indicator Visual blown-fuse indicator
Auxiliary contacts Two integrated microswitches
Terminal type Pressure-plate connection
Mounting type DIN rail mounting
Approximate weight 0.47 kg
EAN 0782001311315
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 Q331168 used for?

The Q331168 is a two-pole modular fuse holder designed to protect industrial electrical circuits using 22 × 58 mm cylindrical fuse links.

What fuse size does the US222M2I accept?

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

Does the Q331168 provide remote fuse indication?

Yes. It incorporates a visual blown-fuse indicator together with two integrated auxiliary microswitches for remote fuse monitoring.

What are the voltage and current ratings?

The fuse holder has a 125 A rating and supports up to 800 V AC and 1000 V DC (UL) or 690 V AC (IEC).

How is the Mersen Q331168 installed?

The unit mounts directly onto a standard DIN rail using pressure-plate terminals for secure industrial installation.

Trusted by Electrical Professionals Worldwide

Mersen UltraSafe™ fuse holders are trusted by panel builders, OEM manufacturers and industrial engineers for dependable overcurrent protection, enhanced operator safety and advanced fuse monitoring capabilities.

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