Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE BASE MOD.CMS.14 3P P/MIC. ACC CMS143P
Mersen CMS143P Modulostar three-pole DIN rail fuse holder for 14 x 51 mm cylindrical fuse links, rated 50 A and 690 V AC/DC with compatibility for optional fuse indication and auxiliary microswitches.
£32.27
Why Choose the Mersen CMS143P Modulostar® Fuse Holder?
The Mersen CMS143P, manufacturer reference R331054, is a high-quality three-pole modular fuse holder designed for 14 × 51 mm cylindrical fuse links. As part of the trusted Mersen Modulostar® CMS14 series, it provides dependable overcurrent protection while allowing the installation of a visual fuse indicator and/or auxiliary microswitch for enhanced monitoring capabilities.
The CMS143P features a finger-safe IP20 enclosure, including during fuse replacement, helping to improve operator safety in industrial environments. Manufactured from durable thermoplastic materials, it is ideal for industrial control panels, OEM machinery, motor control centres and electrical distribution systems.
Rated at 50 A and suitable for systems up to 690 V AC or 690 V DC, the CMS143P offers flexible installation thanks to its compatibility with optional fuse indication and remote signalling accessories. Its DIN rail mounting design enables fast installation and efficient use of panel space.
Key Advantages
- Reliable three-pole modular fuse holder.
- Designed for 14 × 51 mm cylindrical fuse links.
- 50 A thermal current rating.
- Compatible with visual fuse indicators and auxiliary microswitches.
- Suitable for 690 V AC and 690 V DC IEC applications.
- Finger-safe IP20 protection, including during fuse replacement.
- 100 kA short-circuit current rating when used with suitable fuse links.
- DIN rail mounting for straightforward installation.
Key Features
- Mersen Modulostar® CMS14 series.
- Three-pole configuration.
- Compatible with 14 × 51 mm cylindrical fuse links.
- 50 A rated current.
- 690 V AC / 690 V DC IEC ratings.
- Compatible with optional visual indicator.
- Compatible with optional auxiliary microswitch.
- Finger-safe IP20 enclosure.
- DIN rail mounting to EN 60715.
- Durable industrial thermoplastic construction.
Reliable Three-Phase Circuit Protection with Flexible Monitoring
The Mersen CMS143P provides secure installation for three 14 × 51 mm cylindrical fuse links, protecting industrial circuits against overloads and short circuits when fitted with suitable fuse links. Its modular construction supports safe, efficient installation within industrial switchboards and automation systems.
Unlike standard fuse holders, the CMS143P is specifically designed to accept optional fuse indicators and auxiliary microswitches, allowing panel builders to add local or remote fuse monitoring whenever required. This flexibility makes it an excellent choice for OEM equipment and industrial control applications.
Typical Applications
- Industrial control panels.
- Motor control centres.
- Three-phase power distribution.
- Variable speed drive protection.
- Transformer protection.
- OEM machinery.
- Automation systems.
- Industrial electrical switchboards.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | None | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Cylindrical | |
| Fuse Size | 14x51 mm | |
| Current | 50 A | |
| Voltage | 690 V | |
| Manufacturer | Mersen | |
| Series | Modulostar® CMS14 | |
| Model | CMS143P | |
| Manufacturer part number | R331054 | |
| Product type | Modular cylindrical fuse holder | |
| Fuse size | 14 × 51 mm | |
| Number of poles | 3 | |
| Rated current | 50 A | |
| Rated voltage AC | 690 V IEC | |
| Rated voltage DC | 690 V IEC | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 8 kV | |
| Short-circuit current rating | 100 kA | |
| Protection rating | IP20 | |
| Indicator compatibility | Optional visual blown-fuse indicator | |
| Auxiliary contact compatibility | Optional microswitch | |
| Mounting type | DIN rail mounting | |
| Operating temperature | -25°C to +60°C | |
| Approximate weight | 0.43 kg | |
| EAN | 8430399000237 | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen CMS143P used for?
The CMS143P is a three-pole modular fuse holder designed to protect industrial electrical circuits using 14 × 51 mm cylindrical fuse links.
What fuse size does the CMS143P accept?
It is designed specifically for 14 × 51 mm cylindrical fuse links.
Can the CMS143P accept a fuse indicator?
Yes. The CMS143P is designed to accept an optional visual blown-fuse indicator and/or an auxiliary microswitch.
What are the electrical ratings?
The fuse holder is rated at 50 A and is suitable for IEC systems operating up to 690 V AC or 690 V DC.
How is the CMS143P installed?
The fuse holder mounts directly onto a standard DIN rail, allowing quick installation inside industrial control panels and electrical switchboards.
Trusted by Electrical Professionals Worldwide
Mersen Modulostar® fuse holders are trusted by electrical engineers, panel builders and OEM manufacturers for dependable circuit protection, finger-safe operation and flexible fuse monitoring solutions.
