Why Choose the Mersen N1018314 High Voltage Transformer Protection Fuse?
The Mersen N1018314 is a high voltage DIN back-up fuse-link designed to protect transformers and associated medium voltage equipment against the thermal and dynamic effects of short-circuit currents. Part of the advanced Mersen Limitor®-PTS series, it combines dependable current-limiting protection with low power losses and an integrated thermal striker.
This fuse-link uses specially developed fuse-element technology to reduce power dissipation within the switchgear compartment. Pure silver fuse elements, silver-plated copper terminals and a robust ceramic body provide consistent electrical performance, dependable fault interruption and long service life in demanding utility and industrial installations.
Rated at 12 kV AC and 80 A, the N1018314 provides a maximum breaking capacity of 80 kA. Its integrated 80 N thermal striker helps prevent excessive heating and supports the operation of compatible air-insulated or gas-insulated switchgear when abnormal conditions occur.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage for high voltage distribution systems.
- 80 A current rating for compatible transformer circuits.
- High 80 kA breaking capacity for dependable fault interruption.
- Integrated 80 N thermal striker for enhanced switchgear protection.
- Low power losses help reduce heat within enclosed switchgear.
- Pure silver fuse elements support consistent electrical performance.
- Suitable for use with air-insulated and gas-insulated switchgear.
Key Features
- Mersen Limitor®-PTS high voltage DIN back-up fuse-link.
- Catalogue number: 45DB120V80PTS2.
- Rated voltage: 12 kV AC.
- Rated current: 80 A.
- Fuse size: 56 mm diameter × 292 mm fuse body length.
- Overall product length: 358 mm.
- Integrated 80 N thermal striker.
- 80 kA maximum breaking capacity.
- Low power dissipation design.
- VDE T402 construction for transformer protection.
High voltage back-up fuse-links protect transformers by rapidly interrupting severe short-circuit currents before excessive thermal or mechanical stress can damage transformer windings, switchgear or connected distribution equipment. Their current-limiting action reduces the peak current and energy passed into a fault.
The Mersen N1018314 combines a low-loss fuse-element design with a thermal striker that reacts to excessive temperature within the fuse compartment. This helps improve protection in compact switchgear installations while supporting coordinated circuit isolation and fault indication.
Typical Applications
- Medium voltage transformer protection.
- Air-insulated switchgear.
- Gas-insulated switchgear.
- Transformer substations.
- Ring main units.
- Industrial power distribution systems.
- Utility distribution equipment.
- OEM transformer controlgear.
