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.
