Why Choose the Mersen N221065 Single-Pole Fuse Holder with Microswitches?
The Mersen N221065 is a robust single-pole fuse holder assembly designed for compatible 20 × 127 mm cylindrical semiconductor fuse-links. Also identified by the catalogue reference PS201BS2MC, it provides secure fuse mounting and reliable blown-fuse signalling for demanding industrial electrical protection systems.
Part of the Mersen PS 20 × 127 fusegear range, the N221065 accommodates high-speed ferrule fuse-links used to protect sensitive power semiconductor equipment. Its single-pole configuration is suitable for individual circuit protection within converters, drives, rectifiers, traction equipment and high-voltage DC installations.
The fuse holder incorporates open-fuse indicating microswitches for remote status monitoring when a compatible striker-operated fuse-link is installed. Its salt-spray-resistant construction supports dependable service in corrosive atmospheres, transport applications and other challenging industrial environments.
Key Advantages
- Single-pole fuse holder for individual circuit protection.
- Designed for compatible 20 × 127 mm cylindrical fuse-links.
- Suitable for systems rated up to 1500 V.
- Supports fuse currents up to 80 A.
- Integrated open-fuse indicating microswitches.
- Enables remote monitoring of compatible striker fuse-links.
- Salt-spray-resistant construction for demanding environments.
- Strong thermal and mechanical withstand performance.
Key Features
- Mersen PS 20 × 127 fuse holder range.
- PS201BS2MC catalogue reference.
- PS I 20.127 BS + MCSBS product designation.
- Single-pole fuse holder assembly.
- Compatible with 20 × 127 mm ferrule fuse-links.
- Maximum rated voltage of 1500 V.
- Maximum fuse current rating of 80 A.
- Open-fuse indicating microswitches.
- Requires a compatible striker fuse for indication.
- Salt-spray-resistant housing.
- Designed for panel mounting.
- Suitable for 50 / 60 Hz electrical systems.
Reliable Fuse Monitoring for Industrial Power Systems
Semiconductor fuse holders provide secure electrical and mechanical connections for high-speed fuse-links protecting sensitive power electronic devices. A correctly selected fuse-link can rapidly limit fault energy before expensive semiconductor components are exposed to damaging thermal and electrical stresses.
The integrated microswitches allow compatible striker-operated fuse-links to be monitored remotely. This helps maintenance teams identify an operated fuse quickly, reduce fault-finding time and restore industrial equipment to service more efficiently.
Typical Applications
- Industrial power converters.
- Variable speed drive systems.
- Rectifiers and inverters.
- Semiconductor protection assemblies.
- Rail and traction equipment.
- Renewable energy installations.
- Battery energy storage systems.
- High-voltage industrial control cabinets.
