Why Choose the Mersen CMS223NMI Modulostar® Fuse Holder?
The Mersen CMS223NMI is a high-performance 3-pole plus neutral cylindrical fuse holder designed for dependable circuit protection, phase and neutral isolation, and fuse-status monitoring in industrial electrical systems. As part of the established Mersen Modulostar® CMS22 series, it accepts 22 × 58 mm cylindrical fuse links and combines visual indication with microswitch-based remote signalling.
Rated at 125 A with operational voltages up to 690 V AC and 690 V DC, the CMS223NMI is suitable for demanding three-phase AC and DC applications. Its three fused poles protect the phase conductors, while the integrated neutral conductor supports coordinated isolation during servicing and maintenance.
The built-in visual indicator and microswitch allow an operated fuse to be identified locally and its status transmitted remotely to a PLC, alarm circuit or monitoring system. Combined with IP20 finger-safe protection, DIN rail mounting and robust industrial construction, the CMS223NMI is ideal for panel builders, OEM manufacturers and maintenance engineers.
Key Advantages
- Designed for 22 × 58 mm cylindrical fuse links.
- 3-pole plus neutral configuration for three-phase systems.
- High 125 A current rating for demanding circuits.
- Suitable for 690 V AC and 690 V DC applications.
- Integrated visual fuse indicator supports local fault identification.
- Built-in microswitch enables remote status signalling.
- IP20 finger-safe construction improves operator protection.
Key Features
- Mersen Modulostar® CMS22 series.
- Three fused poles plus neutral conductor.
- Compatible with 22 × 58 mm cylindrical fuse links.
- 125 A rated current.
- 690 V AC / 690 V DC IEC voltage rating.
- Integrated visual blown fuse indication.
- Integrated microswitch for remote monitoring.
- 100 kA short-circuit current rating.
- IP20 finger-safe protection, including during fuse replacement.
- DIN rail mounting to EN 60715.
Three-Phase Protection with Local and Remote Monitoring
The Mersen CMS223NMI provides secure mounting and connection for three 22 × 58 mm cylindrical fuse links while incorporating a neutral conductor within the same modular assembly. When an overload or short circuit occurs, the installed fuse interrupts the affected phase according to its operating characteristics, helping protect cables, machinery and electrical equipment.
Its combined visual indication and microswitch system allows maintenance personnel to identify fuse operation directly at the panel while also sending a remote signal to connected monitoring equipment. This helps accelerate fault diagnosis, reduce machine downtime and improve maintenance efficiency in automated installations.
Typical Applications
- Three-phase industrial control panels.
- Machinery and automation systems.
- Motor control centres.
- Power distribution equipment.
- Transformer and feeder protection.
- Renewable energy and DC installations.
- Industrial monitoring and alarm systems.
- OEM electrical assemblies.
