Why Choose the Mersen S1000286 High Voltage DIN Back-up Fuse?
The Mersen S1000286 is a high performance Limitor®-PTD high voltage DIN back-up fuse specifically engineered to protect medium voltage transformers and associated switchgear from the damaging effects of short-circuit currents. Designed in accordance with IEC 60282-1 and VDE 0670 T402, it delivers dependable protection for demanding electrical distribution applications.
Manufactured using high quality ceramic bodies, pure silver fuse elements and silver-plated copper end caps, the S1000286 provides exceptional reliability and consistent performance. Its integrated thermal striker (80 N) allows reliable operation with compatible load break switches and switchgear, making it a trusted choice for utility networks, substations and industrial power systems.
Rated at 36 kV AC with a 6.3 A current rating, this fuse is ideally suited for transformer protection in gas-insulated and air-insulated switchgear. The Limitor®-PTD series is recommended by leading switchgear manufacturers including Siemens and Ormazabal for dependable medium voltage protection.
Key Advantages
- Designed for reliable medium voltage transformer protection.
- 36 kV AC rated voltage for high voltage distribution systems.
- 6.3 A rated current for transformer applications.
- Integrated 80 N thermal striker for switchgear operation.
- Complies with IEC 60282-1 and VDE 0670 T402.
- Manufactured using premium ceramic, silver and copper materials for long service life.
Key Features
- Mersen Limitor®-PTD series.
- High voltage DIN back-up fuse.
- 36 kV AC IEC rated voltage.
- 6.3 A rated current.
- 537 mm overall fuse length.
- 56 mm fuse diameter.
- Integrated thermal striker rated at 80 N.
- Suitable for transformer protection within medium voltage switchgear.
High voltage back-up fuses play a critical role in protecting transformers against the thermal and mechanical effects of high fault currents. They rapidly interrupt short circuits while limiting energy released into the electrical system, helping minimise equipment damage and reduce downtime.
The Mersen Limitor®-PTD range has been developed for use within modern medium voltage switchgear installations, providing dependable performance in utility substations, industrial facilities, renewable energy installations and commercial power distribution networks.
Typical Applications
- Medium voltage transformer protection.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear (AIS).
- Utility substations.
- Industrial electrical distribution systems.
- Renewable energy and infrastructure projects.
