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MERSEN FUSE BASE MOD. CMS.14 4P CMS144
Mersen CMS144 Modulostar four-pole modular fuse holder for 14 x 51 mm cylindrical fuse-links, rated at 50 A and 690 V AC or DC with IP20 protection.
£37.44
Why Choose the Mersen CMS144 Modulostar Fuse Holder?
The Mersen CMS144, manufacturer item number F331021, is a robust four-pole modular fuse holder designed for use with 14 × 51 mm cylindrical fuse-links. Part of the Mersen Modulostar CMS14 series, it provides dependable overcurrent protection for industrial electrical distribution, machinery and automation systems.
The CMS144 accommodates four fuse-links within a compact modular assembly, making it suitable for three-phase circuits with a switched neutral or other applications requiring four-pole protection. Its IP20 finger-safe design helps prevent accidental contact with live components, including during fuse replacement when correctly installed.
With a rated current of 50 A, an operating voltage of up to 690 V AC or 690 V DC and a 100 kA short-circuit current rating, the CMS144 is suitable for demanding industrial circuits. DIN rail mounting allows straightforward installation within control panels, switchboards and electrical enclosures.
Key Advantages
- Compact four-pole fuse holder for 14 × 51 mm fuse-links.
- 50 A rated current for industrial electrical protection.
- Suitable for systems up to 690 V AC or 690 V DC.
- 100 kA short-circuit current rating for high fault-current applications.
- IP20 finger-safe construction supports safer operation and fuse replacement.
- DIN rail mounting simplifies control panel installation.
- Lockable and sealable design supports controlled access and maintenance.
Key Features
- Mersen Modulostar CMS14 series.
- CMS144 four-pole configuration.
- Compatible with 14 × 51 mm cylindrical fuse-links.
- Suitable for gG, aM and compatible Mersen Protistor fuse-links.
- 50 A conventional free-air thermal current.
- 690 V AC and 690 V DC rated voltage.
- 100 kA short-circuit current rating.
- 8 kV rated impulse withstand voltage.
- IP20 finger-safe modular construction.
- Flame-retardant thermoplastic or thermoset housing.
- DIN rail installation according to EN 60715.
Reliable Four-Pole Protection for Industrial Circuits
The Mersen CMS144 provides secure mounting and electrical connection for four cylindrical fuse-links. When installed with correctly selected 14 × 51 mm fuses, it helps protect cables, motors, transformers, drives and electrical equipment against damaging overload and short-circuit currents.
Its four-pole arrangement is particularly suitable for three-phase and neutral systems where all conductors require coordinated isolation. The modular, lockable design also supports safe maintenance and efficient integration into modern industrial control panels and distribution assemblies.
Typical Applications
- Three-phase and neutral electrical circuits.
- Industrial control panels and switchboards.
- Motor and transformer protection.
- Variable speed drive protection.
- Low-voltage power distribution systems.
- Machinery and OEM automation equipment.
- Railway and marine electrical installations.
- Commercial and industrial infrastructure.
Technical Specifications
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| Fuse Indication | None | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | Fuse base / holder | |
| Fuse Type | Cylindrical | |
| Fuse Size | 14x51 mm | |
| Voltage | 690 V | |
| Manufacturer | Mersen | |
| Series | Modulostar CMS14 | |
| Model | CMS144 | |
| Manufacturer item number | F331021 | |
| Product type | Modular cylindrical fuse holder | |
| Fuse size | 14 × 51 mm | |
| Number of poles | 4 | |
| Current rating | 50 A | |
| Rated operational current | Up to 50 A | |
| Rated voltage AC | 690 V AC | |
| Rated voltage DC | 690 V DC | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 8 kV | |
| Short-circuit current rating | 100 kA | |
| Utilisation category | AC-20B / DC-20B | |
| Protection rating | IP20 | |
| Maximum fuse-link power dissipation | 5 W | |
| Operating temperature | -25°C to +60°C | |
| Storage temperature | -25°C to +80°C | |
| Maximum terminal torque | 3.5 N·m | |
| Rigid conductor capacity | 1.5 to 35 mm² | |
| Stranded conductor capacity | 1.5 to 25 mm² | |
| Mounting type | DIN rail according to EN 60715 | |
| Dimensions (H × W × D) | approximately 110.7 × 105.9 × 76.5 mm | |
| Product weight | approximately 0.57 kg | |
| Standards | IEC 60269-2 and IEC 60947-3 | |
| RoHS compliant | Yes | |
| EAN / UPC | 8430399014470 | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen CMS144 used for?
The Mersen CMS144 holds four cylindrical fuse-links that protect industrial AC or DC circuits against overloads and short circuits.
What fuse size fits the CMS144?
The CMS144 is designed for standard 14 × 51 mm cylindrical fuse-links, including compatible gG, aM and Mersen Protistor fuse types.
What is the current rating of the CMS144?
The Mersen CMS144 has a conventional free-air thermal current rating of 50 A. The selected fuse-link must be correctly rated for the application.
Can the CMS144 be used on DC circuits?
Yes. The CMS144 is suitable for both AC and DC systems with rated voltages of up to 690 V AC or 690 V DC.
How is the Mersen CMS144 installed?
The fuse holder mounts onto a standard DIN rail according to EN 60715 inside a suitable electrical enclosure or control panel.
Trusted for Industrial Electrical Protection
Mersen Modulostar fuse holders are trusted by electrical engineers, panel builders and equipment manufacturers for dependable circuit protection, safe fuse access and efficient integration into industrial electrical systems.
