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MERSEN FUSE US223M US223M
Mersen T331171 US223M UltraSafe three-pole modular fuse holder for 22 x 58 mm cylindrical fuse links, rated 125 A with an integrated microswitch, IP20 protection and DIN rail mounting.
£56.14
Why Choose the Mersen T331171 US223M UltraSafe™ Fuse Holder?
The Mersen T331171, catalogue reference US223M, is a high-performance three-pole modular fuse holder designed for safe and dependable protection of industrial electrical circuits. Part of the proven Mersen UltraSafe™ US22 series, it accommodates standard 22 × 58 mm cylindrical fuse links and combines high current capacity with a compact DIN rail mounted design.
The US223M includes an integrated microswitch indication system, allowing fuse status to be monitored remotely through PLC inputs, alarms and industrial control equipment. This functionality helps maintenance teams identify fuse operation quickly, reduce fault-finding time and minimise disruption to critical machinery and production systems.
Rated for 125 A, with voltage ratings of 800 V AC UL, 1000 V DC UL and 690 V AC/DC IEC, the Mersen T331171 is suitable for demanding AC and DC installations. Its IP20 finger-safe polyamide housing, pressure-plate connections and robust clip-in fuse mechanism provide reliable performance in industrial control panels, switchboards and automation equipment.
Key Advantages
- Three-pole UltraSafe™ modular fuse holder for industrial applications.
- Designed for standard 22 × 58 mm cylindrical fuse links.
- Integrated microswitch enables remote fuse-status indication.
- High 125 A current rating for demanding electrical loads.
- Suitable for high-voltage AC and DC systems.
- IP20 finger-safe construction improves safety during operation and fuse replacement.
Key Features
- Mersen UltraSafe™ US22 series.
- Three-pole modular fuse holder.
- Accepts 22 × 58 mm cylindrical fuse links.
- 125 A rated current.
- 800 V AC UL rated voltage.
- 1000 V DC UL rated voltage.
- 690 V AC / 690 V DC IEC rated voltage.
- Integrated auxiliary microswitch.
- Pressure-plate terminal design.
- DIN rail mounting with IP20 finger-safe protection.
Reliable Fuse Protection with Remote Status Monitoring
The Mersen T331171 securely houses three 22 × 58 mm cylindrical fuse links and provides dependable overcurrent protection for industrial AC and DC circuits. Its high short-circuit rating and durable polyamide housing make it suitable for critical power and automation systems where reliable operation is essential.
The integrated microswitch allows fuse status to be communicated to external monitoring equipment, enabling rapid fault notification and improved maintenance planning. Combined with its finger-safe construction and straightforward clip-in fuse installation, the US223M helps improve safety, system availability and maintenance efficiency.
Typical Applications
- Industrial control panels.
- Motor control centres.
- Power distribution systems.
- OEM machinery and production equipment.
- Automation cabinets with remote fault monitoring.
- High-voltage AC and DC electrical installations.
Technical Specifications
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| Fuse Indication | Microswitch | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Cylindrical | |
| Fuse Size | 22x58 mm | |
| Current | 125 A | |
| Voltage | 690 V | |
| Manufacturer | Mersen | |
| Series | UltraSafe™ US22 | |
| Item number | T331171 | |
| Catalogue number | US223M | |
| Product type | Modular cylindrical fuse holder | |
| Fuse size | 22 × 58 mm | |
| Number of poles | 3 | |
| Rated current | 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 | |
| Rated insulation voltage | 750 V | |
| Rated impulse withstand voltage | 8 kV | |
| Short-circuit current rating | 100 kA | |
| Frequency | 50 / 60 Hz | |
| Indication system | Integrated microswitch | |
| Wiring range | 1/0 to 14 AWG | |
| Terminal material | Tin-plated copper | |
| Terminal type | Pressure plate / clip | |
| Fuse installation | Clip-in | |
| Terminal torque | 4 N·m | |
| Housing material | Polyamide | |
| Protection rating | IP20 | |
| Mounting type | DIN rail to EN 60715 | |
| Dimensions (W × L × H) | 105 × 76.5 × 127.5 mm | |
| Product weight | Approx. 0.67 kg | |
| EAN / UPC | 0782001311407 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen T331171 used for?
The Mersen T331171 is a three-pole modular fuse holder used to install and protect 22 × 58 mm cylindrical fuse links in industrial AC and DC electrical systems.
What is the catalogue reference for the T331171?
The Mersen catalogue reference for item number T331171 is US223M.
Does the US223M include remote fuse indication?
Yes. It includes an integrated microswitch that can signal fuse status to PLCs, alarms and other monitoring equipment.
What are the voltage and current ratings?
The fuse holder is rated for 125 A, 800 V AC UL, 1000 V DC UL and 690 V AC/DC IEC.
How is the Mersen T331171 installed?
It is designed for DIN rail mounting to EN 60715 and uses pressure-plate connections with a clip-in fuse installation method.
Trusted by Industrial Engineers Worldwide
Mersen UltraSafe™ fuse holders are widely specified by OEMs, panel builders and electrical engineers for dependable cylindrical fuse protection, finger-safe maintenance and effective remote fuse-status monitoring.
