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MERSEN FUSE BASE MOD. CMS.14 3P C/2MICROS CMS143M2
Mersen CMS143M2 Modulostar 14 × 51 mm three-pole cylindrical fuse holder with two auxiliary microswitches, 50 A rating, 690 V AC/DC operation and IP20 protection.
£46.60
Why Choose the Mersen CMS143M2 Modulostar® Fuse Holder?
The Mersen CMS143M2 is a durable modular 14 × 51 mm cylindrical fuse holder designed for reliable overcurrent protection in industrial control panels, machinery and low-voltage electrical distribution systems. Part of the established Mersen Modulostar® CMS14 range, it provides a three-pole arrangement for protecting three-phase circuits.
This model is supplied with two auxiliary microswitches, enabling remote fuse-status indication through a PLC, alarm circuit or monitoring system. This functionality supports quicker fault detection, simplifies maintenance and helps reduce downtime in automated machinery and critical industrial installations.
Rated at 50 A and suitable for systems up to 690 V AC or DC, the CMS143M2 accepts standard 14 × 51 mm IEC cylindrical fuse-links. Its finger-safe IP20 housing, robust thermoplastic construction and DIN rail mounting format make it a dependable choice for compact electrical enclosures.
Key Advantages
- Designed for standard 14 × 51 mm cylindrical fuse-links.
- Three-pole configuration for three-phase electrical circuits.
- Supplied with two auxiliary microswitches for remote status indication.
- 50 A rated current for demanding industrial applications.
- Suitable for systems rated up to 690 V AC or DC.
- Finger-safe IP20 protection, including during fuse replacement.
- Compact DIN rail mounting simplifies panel installation.
Key Features
- Mersen Modulostar® CMS14 series.
- 14 × 51 mm IEC cylindrical fuse-holder format.
- Three-pole configuration.
- 50 A conventional free-air thermal current.
- 690 V AC and 690 V DC rated voltage.
- 100 kA short-circuit current rating.
- Two integrated auxiliary microswitches.
- Remote fuse-status signalling capability.
- DIN rail mounting in accordance with EN 60715.
- IP20 finger-safe construction.
- Durable thermoplastic or thermoset housing.
- RoHS-compliant design.
Reliable Fuse Protection with Remote Monitoring
The Mersen CMS143M2 securely houses three cylindrical fuse-links to protect electrical equipment against overloads and short-circuit faults. Its three-pole design makes it particularly suitable for three-phase industrial circuits where dependable isolation and coordinated protection are required.
The two auxiliary microswitches provide electrical status signals that can be connected to automation or monitoring equipment. This enables maintenance teams to receive rapid notification following fuse operation, helping them identify affected circuits and restore equipment more efficiently.
Typical Applications
- Three-phase industrial control panels.
- Motor and transformer protection circuits.
- Machinery and production equipment.
- Low-voltage power distribution systems.
- Variable speed drive protection.
- OEM automation systems.
- Remote fault-monitoring circuits.
- Industrial switchboards and enclosures.
Technical Specifications
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| 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 | |
| Catalogue number | CMS143M2 | |
| Item number | H331069 | |
| Product type | Modular cylindrical fuse holder | |
| Fuse size | 14 × 51 mm | |
| Number of poles | 3 | |
| Rated current | 50 A | |
| Rated voltage AC | 690 V | |
| Rated voltage DC | 690 V | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 8 kV | |
| Short-circuit current rating | 100 kA | |
| Indication system | Two auxiliary microswitches | |
| Protection rating | IP20 | |
| Mounting type | DIN rail according to EN 60715 | |
| Terminal tightening torque | 3.5 N·m | |
| Dimensions (H × W × D) | 110.8 × 79.5 × 76.5 mm | |
| Product weight | 0.43 kg | |
| Electrical supply type | AC / DC | |
| RoHS compliant | Yes | |
| EAN / UPC | 8430399000251 | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What fuse size does the Mersen CMS143M2 accept?
The CMS143M2 is designed for standard 14 × 51 mm IEC cylindrical fuse-links.
How many poles does the CMS143M2 have?
The fuse holder has a three-pole configuration, making it suitable for three-phase electrical circuits.
What is the purpose of the two microswitches?
The two auxiliary microswitches provide remote fuse-status signals that can be connected to PLCs, alarm circuits or monitoring systems.
What are the electrical ratings of the CMS143M2?
The Mersen CMS143M2 is rated at 50 A and up to 690 V AC or 690 V DC, with a short-circuit current rating of 100 kA.
How is the Mersen CMS143M2 installed?
The fuse holder mounts onto a standard DIN rail in accordance with EN 60715 inside an electrical control panel, switchboard or machinery enclosure.
Trusted by Industrial Electrical Professionals
Mersen Modulostar® fuse holders are widely used by panel builders, OEM manufacturers and electrical engineers for dependable circuit protection, finger-safe operation and effective remote fuse monitoring in industrial systems.
