Why Choose the Mersen CMS141NMI Modulostar® Fuse Holder?
The Mersen CMS141NMI, manufacturer reference Q331030, is a high-quality single-pole plus neutral modular fuse holder designed for 14 × 51 mm cylindrical fuse links. Part of the established Mersen Modulostar® CMS14 series, it provides reliable fuse protection, circuit isolation and neutral conductor switching for industrial electrical distribution and control applications.
This model combines an integrated visual blown-fuse indicator with a microswitch for remote fuse-status signalling. These monitoring features allow engineers to identify an operated fuse quickly, either directly at the electrical panel or through connected control and alarm equipment, helping reduce troubleshooting time and system downtime.
Rated at 50 A and suitable for systems up to 690 V AC or 690 V DC, the CMS141NMI offers dependable performance in demanding industrial installations. Its finger-safe IP20 construction and DIN rail mounting format support safe, efficient integration into switchboards, machinery panels and low-voltage distribution equipment.
Key Advantages
- Combined single-pole plus neutral configuration for compact circuit protection and isolation.
- Designed for standard 14 × 51 mm cylindrical fuse links.
- Integrated visual blown-fuse indicator supports rapid fault identification.
- Built-in microswitch enables remote fuse-status monitoring.
- 50 A current rating for industrial protection applications.
- Suitable for electrical systems up to 690 V AC or 690 V DC.
- Finger-safe IP20 protection, including during fuse replacement.
- Quick mounting on standard DIN rail systems.
Key Features
- Mersen Modulostar® CMS14 series.
- One pole plus neutral configuration.
- Compatible with 14 × 51 mm cylindrical fuse links.
- 50 A ampere rating.
- 690 V AC and 690 V DC IEC voltage ratings.
- Integrated visual fuse-status indicator.
- Integrated remote indication microswitch.
- 100 kA short-circuit current rating when used with a suitable fuse link.
- Finger-safe IP20 modular construction.
- DIN rail mounting for straightforward panel installation.
Reliable Fuse Protection with Local and Remote Indication
The Mersen CMS141NMI securely accommodates a 14 × 51 mm cylindrical fuse link, providing a practical means of protecting electrical equipment against overload and short-circuit conditions. Its single-pole plus neutral arrangement supports coordinated circuit isolation within a compact modular assembly.
The visual indicator allows an operated fuse to be identified during inspection, while the integrated microswitch can transmit its status to a PLC, alarm circuit or monitoring system. This combination makes the CMS141NMI particularly valuable in installations where rapid fault detection and reduced maintenance downtime are essential.
Typical Applications
- Industrial control panels.
- Single-phase power distribution circuits.
- Motor and machinery protection.
- Transformer protection.
- Automation and process-control equipment.
- Electrical switchboards.
- Remote fuse-monitoring systems.
- OEM machinery and production equipment.
