Why Choose the Mersen F1018330 High-Voltage Back-Up Fuse?
The Mersen F1018330, catalogue reference 45DB360V80PTS, is a high-voltage DIN back-up fuse-link developed for the protection of distribution transformers against the damaging thermal and dynamic effects of short-circuit currents. As part of the Mersen Limitor®-PTS series, it features low power dissipation and an integrated 80 N thermal striker, making it particularly suitable for modern air-insulated and gas-insulated switchgear installations.
Rated at 36 kV AC and 80 A, the F1018330 is engineered for demanding medium-voltage transformer protection applications. The Limitor®-PTS design incorporates advanced fuse elements that reduce power losses, helping minimise temperature rise within enclosed switchgear compartments while maintaining exceptional current-limiting performance.
Manufactured using a robust ceramic body with pure silver fuse elements and silver-plated copper terminals, the fuse provides dependable long-term operation. Mersen Limitor®-PTS fuse-links are recommended by major switchgear manufacturers including Siemens and Ormazabal for use within compatible gas-insulated switchgear.
Key Advantages
- High-voltage DIN back-up fuse for transformer protection.
- 36 kV AC rated voltage.
- 80 A rated current.
- Low power dissipation helps reduce switchgear heating.
- 36 kA breaking capacity.
- Integrated 80 N thermal striker.
- Current-limiting design reduces thermal and mechanical fault stress.
- Recommended for compatible air-insulated and gas-insulated switchgear.
Key Features
- Mersen Limitor®-PTS series.
- Manufacturer item number F1018330.
- Catalogue number 45DB360V80PTS.
- 36 kV AC IEC rated voltage.
- 80 A rated current.
- 36 kA maximum breaking capacity.
- 350 A minimum breaking current.
- Total clearing I²t of 112 kA²s.
- Power dissipation of approximately 230 W.
- Integrated 80 N thermal striker.
- Low power loss fuse-element technology.
- DIN clip-mounted construction.
The Mersen F1018330 rapidly interrupts severe short-circuit currents before they can damage transformers, switchgear and associated equipment. Its advanced low-loss fuse element design helps minimise operating temperatures whilst maintaining dependable current-limiting protection for critical medium-voltage installations.
As a back-up fuse-link, the F1018330 should be coordinated with suitable overload protection. Correct fuse selection should consider transformer characteristics, available fault current and switchgear manufacturer recommendations to ensure optimum protection.
Typical Applications
- Distribution transformer protection.
- Medium-voltage substations.
- Air-insulated switchgear.
- Gas-insulated switchgear.
- Industrial electrical distribution.
- Utility power networks.
- Renewable energy transformer installations.
- Medium-voltage feeder protection.
