SPD 1, used in the IT, TT, TN-C, TN-S 2,Up:AC385V;Imax:100kA;In:60kA 3.GB18802.1/ ... is usually be used in the IT, TT, TN-C, TN-S, TN-C-S and etc power supply system of AC 50/60Hz ... indicationMechanical flagRemote contactsNoBack-up fuse60AResponse time(ns)≤25Ambient temperature-40°C to +80°CRelative humidityOn condition that room temperature 30% to ...