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MERSEN FUSE US223N US223N

MERSEN FUSE US223N US223N

Mersen X331174 US223N UltraSafe 3-Pole + Neutral modular fuse holder for 22 x 58 mm cylindrical fuse-links, rated 125 A, 800 V AC UL and 1000 V DC UL with IP20 finger-safe protection.

SKU: X331174Alt SKU: US223NMPN: X331174
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List Price £96.31 ex VAT
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Why Choose the Mersen X331174 US223N UltraSafe™ Fuse Holder?

The Mersen X331174, catalogue number US223N, is a premium 3-Pole + Neutral modular fuse holder from the UltraSafe™ US22 series. Designed for industrial power distribution, machinery and semiconductor protection, it accepts standard 22 × 58 mm cylindrical fuse-links while providing dependable overcurrent protection in demanding electrical installations.

The US223N combines three fused phase poles with an integrated neutral conductor in a compact DIN rail-mounted assembly. Its finger-safe IP20 enclosure remains protected during fuse replacement, helping improve operator safety and simplify maintenance. The holder is also compatible with optional microswitch accessories for remote fuse status indication when required.

Rated for up to 125 A, with voltage ratings of 800 V AC UL, 1000 V DC UL and 690 V AC/DC IEC, the X331174 is ideal for industrial control panels, power conversion equipment, switchboards, renewable energy systems and heavy-duty automation installations.

Key Advantages

  • 3-Pole + Neutral UltraSafe™ modular fuse holder.
  • Accepts standard 22 × 58 mm cylindrical fuse-links.
  • 125 A current rating.
  • 800 V AC UL / 1000 V DC UL ratings.
  • 690 V AC/DC IEC operation.
  • Finger-safe IP20 protection.
  • Compatible with optional microswitch accessories.
  • DIN rail mounting for straightforward installation.

Key Features

  • Mersen UltraSafe™ US22 series.
  • Catalogue number: US223N.
  • Item number: X331174.
  • 3-Pole + Neutral configuration.
  • 22 × 58 mm fuse compatibility.
  • 125 A maximum fuse rating.
  • 800 V AC UL / 1000 V DC UL.
  • 690 V AC / DC IEC rating.
  • Pressure plate terminals.
  • IP20 finger-safe enclosure.
  • DIN rail mounting to EN 60715.
  • Compatible with optional multi-pole assembly kits and microswitches.

Reliable Protection for Three-Phase Distribution Systems

The UltraSafe™ US22 range provides secure housing for cylindrical fuse-links while maintaining finger-safe protection throughout installation and maintenance. The 3-Pole + Neutral configuration enables three-phase circuits to be protected while providing a dedicated neutral conductor within the same modular assembly.

The X331174 is particularly suited to industrial machinery, renewable energy systems, UPS installations, power conversion equipment and heavy-duty switchboards where dependable high-current fuse protection is essential. Optional microswitch accessories can be added to provide remote fuse monitoring where required.

Typical Applications

  • Industrial control panels.
  • Three-phase power distribution systems.
  • Motor drives and variable speed drives.
  • UPS and power conversion equipment.
  • Renewable energy systems.
  • OEM machinery.
  • Automation systems.
  • Switchboards and electrical enclosures.

Technical Specifications

Phase Three Phase
Manufacturer Mersen
Series UltraSafe™ US22
Item number X331174
Catalogue number US223N
Product type Modular cylindrical fuse holder
Configuration 3-Pole + Neutral
Fuse size 22 × 58 mm
Maximum fuse rating 125 A
Rated voltage AC (UL) 800 V
Rated voltage DC (UL) 1000 V
Rated voltage AC (IEC) 690 V
Rated voltage DC (IEC) 690 V
Frequency 50 / 60 Hz
Short-circuit current rating 100 kA
Protection rating IP20
Terminal type Pressure plate
Terminal material Tin-plated copper
Wiring range 1/0 to #14 AWG
Tightening torque 35.4 lb-in (4 Nm approx.)
Rated insulation voltage 750 V
Rated impulse withstand voltage 8 kV
Housing material Polyamide
Mounting type DIN rail mounting to EN 60715
Dimensions (H × W × D) approx. 127.5 × 140 × 76.5 mm
Weight approx. 0.91 kg
EAN / UPC 0782001311346
RoHS compliant Yes
HS Code 85361090
Country of Manufacture Tunisia
Device Type Fuse base / holder
Fuse Type Cylindrical
Fuse Size 22x58 mm
Voltage 800 V

Frequently Asked Questions

What is the Mersen X331174 used for?

The X331174 is a 3-Pole + Neutral modular fuse holder designed to house 22 × 58 mm cylindrical fuse-links for industrial overcurrent protection.

What fuse size does the US223N accept?

The fuse holder accepts standard 22 × 58 mm cylindrical fuse-links.

What is the maximum current rating?

The US223N supports fuse-links rated up to 125 A.

Can optional microswitches be fitted?

Yes. The UltraSafe US22 range supports optional microswitch accessories to provide remote fuse status indication where required.

How is the X331174 installed?

The fuse holder mounts directly onto a standard DIN rail using pressure plate terminals for secure electrical connections.

Trusted Industrial Circuit Protection

Mersen UltraSafe™ fuse holders are trusted by panel builders, OEM manufacturers and industrial engineers for dependable circuit protection, finger-safe operation and long-term reliability in demanding electrical installations.

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