Mersen R331169 UltraSafe US223 three-pole DIN rail fuse holder for 22 x 58 mm cylindrical fuse links, rated 125 A with IP20 finger-safe protection.
£67.74
The Mersen R331169, catalogue number US223, is a robust three-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 and safe circuit isolation for industrial power distribution, motor control and OEM machinery.
The US223 features a finger-safe IP20 enclosure, including during fuse replacement, helping protect maintenance personnel from accidental contact with live components. Manufactured from durable flame-retardant thermoplastic materials, it is ideal for industrial control panels, switchboards and demanding automation applications.
Rated at 125 A, the R331169 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 ensure secure installation, while the modular design allows optional field assembly with additional poles where required.
The Mersen R331169 securely accommodates three 22 × 58 mm cylindrical fuse links, providing dependable protection against overloads and short circuits when used with correctly selected fuse links. Its robust construction and finger-safe design make it suitable for demanding industrial environments where reliability is essential.
The UltraSafe™ US22 range is designed to simplify installation and maintenance while providing excellent operator protection. Optional visual indicators and auxiliary microswitches are available elsewhere within the US22 family for applications requiring local or remote fuse monitoring.
| Phase | Three Phase |
|---|---|
| Manufacturer | Mersen |
| Series | UltraSafe™ US22 |
| Catalogue number | US223 |
| Manufacturer part number | R331169 |
| 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 |
| Frequency | 50 / 60 Hz |
| Short-circuit current rating | 100 kA |
| Protection rating | IP20 |
| Terminal type | Pressure-plate connection |
| Fuse indication | No integrated indicator |
| Mounting type | DIN rail mounting |
| Approximate weight | 0.64 kg |
| EAN / UPC | 0782001311339 |
| HS Code | 85361090 |
| Country of Manufacture | Tunisia |
The R331169 is a three-pole modular fuse holder designed to protect industrial electrical circuits using 22 × 58 mm cylindrical fuse links.
It is designed specifically for 22 × 58 mm cylindrical fuse links.
No. The standard US223 version does not include an integrated blown-fuse indicator. Indicator and microswitch variants are available within the UltraSafe™ US22 range.
The fuse holder is rated at 125 A and supports up to 800 V AC and 1000 V DC (UL) or 690 V AC (IEC).
The unit mounts directly onto a standard DIN rail using pressure-plate terminals for secure installation within industrial control panels and switchboards.
Mersen UltraSafe™ fuse holders are trusted by electrical engineers, machine builders and panel manufacturers for dependable circuit protection, finger-safe operation and long-term industrial reliability.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...