Why Choose the Mersen P1000283 Limitor®-PTD High Voltage Transformer Fuse?
The Mersen P1000283, catalogue number 45DB240V63PTD, is a premium DIN high voltage back-up fuse engineered specifically for protecting medium-voltage transformers against damaging short-circuit currents. As part of the proven Mersen Limitor®-PTD series, it combines current-limiting performance with controlled power dissipation and a thermal striker, making it ideal for modern air and gas-insulated switchgear installations.
Manufactured using pure silver fuse elements, silver-plated copper terminals and a robust ceramic insulating body, the P1000283 delivers dependable electrical performance, high breaking capacity and long service life. The integrated 80 N thermal striker provides reliable operation of compatible switchgear trip mechanisms and clear fuse indication during fault conditions.
Rated at 24 kV AC and 63 A, this fuse-link is designed for transformer protection within substations, utilities, industrial facilities and OEM medium-voltage switchgear. Siemens and Ormazabal recommend the Limitor®-PTD range for use in their gas-insulated switchgear.
Key Advantages
- Designed specifically for medium-voltage transformer protection.
- 24 kV AC rated voltage for IEC high-voltage systems.
- 63 A current rating.
- Integrated 80 N thermal striker for switchgear tripping.
- Controlled power dissipation improves thermal performance.
- 63 kA breaking capacity for dependable fault interruption.
Key Features
- Mersen Limitor®-PTD back-up fuse.
- Catalogue number: 45DB240V63PTD.
- Item number: P1000283.
- 24 kV AC IEC rated voltage.
- 63 A rated current.
- 65 mm diameter × 442 mm DIN fuse size.
- Integrated 80 N thermal striker.
- Pure silver fuse elements.
- Silver-plated copper cylindrical terminals.
- Ceramic insulating body.
Medium-voltage transformers require specialised protection capable of clearing severe short-circuit currents before excessive thermal or mechanical damage occurs. The Limitor®-PTD range is specifically designed to provide rapid current limitation while maintaining controlled power dissipation, making it particularly suitable for enclosed switchgear installations.
Its integrated thermal striker allows operation of compatible switchgear trip mechanisms or signalling devices after fuse operation, improving system safety and simplifying maintenance. Premium construction materials and compliance with recognised international standards ensure dependable long-term performance in demanding industrial and utility environments.
Typical Applications
- Medium-voltage transformer protection.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear.
- Electrical substations.
- Industrial power distribution.
- Utility electrical networks.
