Tridelta have developed surge arresters for the use in direct voltage (DC) networks with a rated voltage of up to 4.8kV. They are suitable, due to special varistor disks, to protect equipment in rail cars, trams or overhead lines.
The designs use either porcelain or silicone housings, making it possible to use the arresters inside and outside of buildings.
Other special application arresters include:
- Arresters for capacitor banks in static compensators
- AC and DC railway arresters
- Arresters for indoor applications in MV cubicles
- Cable sheath protection arresters