The SDGDT 100 EX is a High Performance Gas Discharge Tube, which works in Extreme Areas according to the Standard ATEX 94/9/EC. The potential equalization works according to the Standards IEC 61024-1 and IEC 60364-5-54 and it is suitable for IT facilities as well as EN50014 and EN50028. The SDGDT 100 EX is used when a potential equalization of the lightning current has to be achieved over electrically insulated components. It can be installed inside, outside or underground.