Protects against overvoltage caused by direct lightning & transient switching surges. Used for protection of sub-station equipment. Available in the rated voltage range of 3kV – 390kV

Protects against overvoltage caused by direct lightning & transient switching surges. Used for protection of sub-station equipment. Available in the rated voltage range of 3kV – 420kV

Protects against overvoltage caused by direct lightning & transient switching surges. Used for protection of sub-station equipment. Available in the rated voltage range of 3kV – 198kV.

Protects against overvoltage caused by direct lightning & transient switching surges. Used for protection of sub-station equipment. Available in the rated voltage range of 3kV – 36kV