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MERSEN FUSE US142M2I US142M2I
Mersen M331142 UltraSafe US142M2I two-pole modular fuse holder for 14×51 mm cylindrical fuse links, featuring visual fuse indication, an integrated microswitch, IP20 protection and ratings up to 800 V AC and 1000 V DC.
£67.09
Why Choose the Mersen M331142 UltraSafe™ US142M2I Fuse Holder?
The Mersen M331142, also identified as the US142M2I, is a high-performance UltraSafe™ modular fuse holder designed for 14×51 mm cylindrical fuse links. Its two-pole configuration provides dependable fuse protection and circuit isolation for industrial control panels, power distribution equipment and machinery.
This fuse holder combines a built-in visual blown fuse indicator with an integrated 2 changeover contact microswitch. These monitoring features allow maintenance personnel and control systems to identify fuse operation quickly, helping reduce diagnostic time and equipment downtime.
With ratings of up to 800 V AC and 1,000 V DC, the Mersen M331142 is suitable for demanding AC and DC electrical systems. Its finger-safe IP20 construction, pressure-plate terminals and DIN rail mounting provide secure, convenient installation inside electrical enclosures.
Key Advantages
- Designed for 14×51 mm cylindrical fuse links.
- Two-pole configuration for simultaneous circuit protection.
- Integrated visual blown fuse indicator supports rapid fault identification.
- Built-in 2 changeover contact microswitch enables remote fuse-status signalling.
- Rated for systems up to 800 V AC and 1,000 V DC.
- Finger-safe IP20 protection, including during fuse replacement.
- Pressure-plate terminals provide secure conductor connections.
- Compact DIN rail format simplifies control-panel installation.
Key Features
- Mersen UltraSafe™ US14 series.
- Manufacturer reference M331142.
- Product designation US142M2I.
- Accepts 14×51 mm cylindrical fuse links.
- Two-pole modular fuse holder.
- Maximum fuse current rating of 50 A.
- 800 V AC maximum voltage rating.
- 1,000 V DC maximum voltage rating.
- Integrated visual fuse-status indicator.
- Integrated 2 changeover contact microswitch.
- Pressure-plate terminal connection.
- DIN rail mounting and IP20 finger-safe protection.
Safe Fuse Protection with Local and Remote Indication
The Mersen M331142 securely houses cylindrical fuse links while protecting users from accidental contact with live components. Its UltraSafe™ construction maintains an IP20 finger-safe protection level during normal operation and fuse replacement when correctly installed.
The visual indicator provides immediate local confirmation when a fuse has operated, while the integrated microswitch can communicate the fuse status to a PLC, alarm circuit or remote monitoring system. This combination makes the fuse holder particularly suitable for installations where continuity and rapid fault detection are important.
Typical Applications
- Industrial control panels and electrical enclosures.
- AC and DC power distribution systems.
- Motor control centres and machinery.
- Industrial automation and PLC-controlled equipment.
- Renewable energy and DC electrical systems.
- OEM equipment and production machinery.
- Remote fuse-status monitoring circuits.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Poles | 2-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Cylindrical | |
| Fuse Size | 14x51 mm | |
| Voltage | 800 V | |
| Manufacturer | Mersen | |
| Series | UltraSafe™ US14 | |
| Catalogue number | M331142 | |
| Product designation | US142M2I | |
| Product type | Modular cylindrical fuse holder | |
| Fuse size | 14 × 51 mm | |
| Number of poles | 2 | |
| Maximum fuse current | 50 A | |
| Maximum rated voltage AC | 800 V AC | |
| Maximum rated voltage DC | 1,000 V DC | |
| Fuse indication | Visual blown fuse indicator | |
| Auxiliary signalling | Integrated 2 changeover contact microswitch | |
| Terminal type | Pressure plate | |
| Protection rating | IP20 | |
| Mounting type | DIN rail mounting | |
| Housing material | Durable thermoplastic or thermoset material | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen M331142 used for?
The Mersen M331142 is a two-pole modular fuse holder used to install and monitor 14×51 mm cylindrical fuse links in industrial AC and DC electrical systems.
Which fuse size fits the Mersen M331142?
The fuse holder is designed for 14×51 mm cylindrical fuse links with ratings appropriate for the protected circuit.
Does the M331142 provide fuse-status indication?
Yes. It includes a visual blown fuse indicator for local status identification and an integrated microswitch for remote signalling.
What are the voltage and current ratings?
The M331142 supports fuse links rated up to 50 A and is designed for systems up to 800 V AC or 1,000 V DC, subject to the installed fuse and applicable standards.
How is the Mersen M331142 installed?
It is designed for DIN rail mounting inside an electrical panel or enclosure and uses pressure-plate terminals for secure conductor connection.
Trusted by Electrical Professionals Worldwide
Mersen UltraSafe™ fuse holders are widely specified by panel builders, OEMs and electrical engineers for dependable fuse protection, finger-safe operation and effective local and remote fuse-status monitoring.
