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MERSEN FUSE US223M2 US223M2
Mersen W331173 US223M2 UltraSafe three-pole modular fuse holder for 22 x 58 mm fuse-links, rated up to 125 A, 800 V AC and 1000 V DC, with two microswitches and IP20 protection.
£62.20
Why Choose the Mersen W331173 US223M2 UltraSafe Fuse Holder?
The Mersen W331173, also identified by catalogue number US223M2, is a robust three-pole modular fuse holder designed for dependable circuit protection in industrial electrical distribution, machinery and power conversion systems. As part of the Mersen UltraSafe™ US22 series, it accepts cylindrical 22 × 58 mm fuse-links and provides a finger-safe design with an IP20 protection rating.
This fuse holder is suitable for both AC and DC applications, with voltage ratings of up to 800 V AC under UL and 1000 V DC under UL. It supports fuse ratings up to 125 A and provides a short-circuit current rating of 100 kA, making it suitable for demanding installations where reliable overcurrent protection is essential.
The W331173 incorporates two microswitches for remote fuse-status indication and monitoring. Its pressure-plate connection system, durable polyamide housing and DIN rail mounting arrangement simplify installation within electrical control panels, switchboards and industrial enclosures.
Key Advantages
- Three-pole UltraSafe™ modular fuse holder for industrial circuit protection.
- Compatible with standard 22 × 58 mm cylindrical fuse-links.
- Includes two microswitches for remote status indication.
- Supports rated currents up to 125 A.
- High 100 kA short-circuit current rating.
- Finger-safe IP20 construction helps improve operator protection.
- Suitable for both AC and DC electrical systems.
- DIN rail mounting enables straightforward control-panel installation.
Key Features
- Mersen UltraSafe™ US22 series.
- Three-pole fuse holder.
- 22 × 58 mm fuse size.
- 125 A maximum fuse rating.
- 800 V AC UL rated voltage.
- 1000 V DC UL rated voltage.
- Two integrated microswitches for fuse-status signalling.
- Pressure-plate terminal arrangement.
- Clip-in fuse installation for convenient maintenance.
- Tough polyamide insulating housing.
- DIN rail mounting in accordance with EN 60715.
Reliable Fuse Protection and Remote Monitoring
Modular fuse holders provide a secure mounting and connection point for replaceable fuse-links within electrical distribution and control systems. When excessive current or a short circuit occurs, the installed fuse-link interrupts the circuit to help protect cables, machinery and connected electrical equipment.
The Mersen W331173 combines high voltage and current ratings with a finger-safe enclosure and remote microswitch signalling. The two microswitches can be incorporated into monitoring or control circuits to provide remote indication of fuse-holder status, supporting faster fault identification and reduced equipment downtime.
Typical Applications
- Industrial electrical control panels.
- Low-voltage power distribution systems.
- Machinery and production equipment.
- Power conversion and semiconductor protection systems.
- Motor control centres and switchboards.
- Renewable energy and energy storage installations.
- Automation and process-control equipment.
- AC and DC circuit-protection applications.
Technical Specifications
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| Fuse Indication | None | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Cylindrical | |
| Fuse Size | 22x58 mm | |
| Voltage | 800 V | |
| Manufacturer | Mersen | |
| Series | UltraSafe™ US22 | |
| Item number | W331173 | |
| Catalogue number | US223M2 | |
| Product type | Modular cylindrical fuse holder | |
| Number of poles | 3 | |
| Fuse size | 22 × 58 mm | |
| Maximum fuse rating | 125 A | |
| Rated voltage AC, UL | 800 V AC | |
| Rated voltage DC, UL | 1000 V DC | |
| Rated voltage AC, IEC | 690 V AC | |
| Rated voltage DC, IEC | 690 V DC | |
| Frequency | 50–60 Hz | |
| Short-circuit current rating | 100 kA | |
| Rated insulation voltage | 750 V | |
| Rated impulse withstand voltage | 8 kV | |
| Indication system | Yes | |
| Indication type | Two microswitches | |
| Protection rating | IP20 | |
| Terminal material | Tin-plated copper | |
| Terminal type | Clip / pressure plate | |
| Wiring range | 1/0 to 14 AWG | |
| Torque rating | 35.403 lb-in | |
| Housing material | Polyamide | |
| Mounting type | DIN rail mounting to EN 60715 | |
| Product dimensions (H × W × D) | approx. 127.5 × 105 × 76.5 mm | |
| Product weight | approx. 0.67 kg | |
| EAN / UPC | 0782001311414 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen W331173 used for?
The Mersen W331173 is used to hold and connect three 22 × 58 mm cylindrical fuse-links for overcurrent and short-circuit protection in industrial AC and DC electrical systems.
What fuse size is compatible with the W331173?
This fuse holder is designed for standard 22 × 58 mm cylindrical fuse-links with ratings up to 125 A.
How many poles does the Mersen W331173 have?
The W331173 is a three-pole fuse holder, allowing three protected conductors or phases to be installed within one modular unit.
What are the microswitches used for?
The fuse holder includes two microswitches that can provide remote fuse-status indication to a control system, alarm circuit or monitoring device.
What voltage can the W331173 support?
The fuse holder is rated up to 800 V AC and 1000 V DC under UL specifications, with IEC ratings of up to 690 V AC and 690 V DC.
How is the Mersen W331173 mounted?
The W331173 is designed for installation on a standard DIN rail in accordance with EN 60715, making it suitable for control panels and electrical enclosures.
Trusted Industrial Circuit Protection
Mersen UltraSafe™ fuse holders are used by electrical engineers, machine builders and panel manufacturers to provide reliable fuse protection, safer maintenance and effective circuit monitoring in demanding industrial installations.
