Why Choose the Mersen CMS143NP Modulostar® Fuse Holder?
The Mersen CMS143NP, item number Z331015, is a high-quality 3-pole plus neutral modular fuse holder designed for 14 × 51 mm cylindrical fuse links. Part of the proven Mersen Modulostar® CMS14 series, it provides dependable circuit protection for industrial switchboards, motor control centres, machinery and automation systems whilst offering compatibility with optional auxiliary microswitches for remote indication.
The CMS143NP features a finger-safe IP20 enclosure in accordance with IEC standards, including during fuse replacement, helping improve operator safety during installation and maintenance. Manufactured from durable thermoplastic and thermoset insulating materials, it delivers reliable long-term performance in demanding industrial environments.
Rated at 50 A with operating voltages up to 690 V AC and 690 V DC, the CMS143NP is suitable for three-phase circuits requiring a neutral conductor. The modular DIN rail-mounted design allows straightforward integration into electrical distribution panels whilst providing the option to add remote fuse-status indication using compatible Mersen microswitch accessories.
Key Advantages
- Designed for 14 × 51 mm cylindrical fuse links.
- 3-pole plus neutral configuration for industrial three-phase systems.
- Compatible with optional auxiliary microswitches for remote indication.
- Finger-safe IP20 construction improves operational safety.
- Compact modular design reduces panel space requirements.
- DIN rail mounting enables quick installation.
Key Features
- Mersen Modulostar® CMS14 series.
- Catalogue reference: CMS143NP.
- Item number: Z331015.
- 3-pole + neutral fuse holder.
- 50 A current rating.
- 690 V AC / 690 V DC IEC rating.
- Compatible with optional auxiliary microswitches.
- Finger-safe IP20 construction.
- Durable thermoplastic and thermoset housing.
- DIN rail mounting.
Reliable Multi-Pole Circuit Protection
Modular fuse holders provide a secure method of installing cylindrical fuse links within industrial electrical systems. When used with correctly rated fuse links, they protect motors, transformers, cables and electrical equipment from overloads and short circuits whilst enabling safe fuse replacement.
The Modulostar® CMS14 range is widely used by panel builders and OEM machine manufacturers due to its compact footprint, finger-safe construction and optional remote indication capability through compatible microswitch accessories.
Typical Applications
- Industrial power distribution panels.
- Motor control centres.
- Automation and PLC panels.
- Machine building and OEM equipment.
- Transformer protection circuits.
- Industrial switchboards.
