Maximum current of endure the lightning stroke 20kA (8/20aas). Time of response < ... D, C, B) 5 series surge protection device (in short: SPD, alias: surge suppressor, surge arrester) is suitable for TN-S, ... is a failure release mounted on the module of surge protection device. \When the SPD fails in breakdown ... Scope and Installation PositionNS1-(D, C, B)5 surge protective device is applicable for D,C,B ...