Why Choose the Mersen CMS143 Modulostar® Fuse Holder?
The Mersen CMS143, manufacturer reference S331032, is a dependable three-pole modular fuse holder designed for 14 × 51 mm cylindrical fuse links. As part of the trusted Mersen Modulostar® CMS14 series, it provides reliable overcurrent protection and safe circuit isolation for industrial control panels, machinery and power distribution systems.
Designed with operator safety in mind, the CMS143 features a finger-safe IP20 enclosure, including during fuse replacement. Its durable thermoplastic construction and compact modular design make it well suited to demanding industrial environments where dependable performance and long service life are essential.
Rated at 50 A and suitable for systems up to 690 V AC or 690 V DC, the CMS143 provides reliable protection for motors, transformers, industrial drives and general low-voltage distribution equipment. Its DIN rail mounting allows quick installation within electrical control panels and switchboards.
Key Advantages
- Reliable three-pole modular fuse holder.
- Designed for 14 × 51 mm cylindrical fuse links.
- 50 A thermal current rating.
- Suitable for 690 V AC and 690 V DC IEC systems.
- Finger-safe IP20 protection, including during fuse replacement.
- 100 kA short-circuit current rating when used with suitable fuse links.
- Compact DIN rail mounting design.
- Ideal for industrial control panels and automation equipment.
Key Features
- Mersen Modulostar® CMS14 series.
- Three-pole configuration.
- Compatible with 14 × 51 mm cylindrical fuse links.
- 50 A rated current.
- 690 V AC / 690 V DC IEC ratings.
- Standard version without visual fuse indication.
- Optional microswitch compatibility via accessory kits.
- Finger-safe IP20 enclosure.
- DIN rail mounting to EN 60715.
- High mechanical and thermal resistance.
Reliable Three-Phase Circuit Protection
The Mersen CMS143 securely accommodates three 14 × 51 mm cylindrical fuse links, providing dependable protection against overload and short-circuit conditions when used with correctly selected fuse links. Its compact modular construction makes it suitable for industrial machinery, OEM equipment and electrical distribution panels.
Built to IEC requirements, the CMS143 combines robust mechanical construction with excellent thermal performance. The CMS14 range also offers versions with visual indication, microswitches or both where local or remote fuse monitoring is required.
Typical Applications
- Industrial control panels.
- Motor control centres.
- Three-phase power distribution.
- Variable speed drive protection.
- Transformer protection.
- OEM machinery.
- Automation systems.
- Electrical switchboards.
