1.Norminal discharge current (8/20uS)ln(KA) 20 2.Max. discharge current (8/20uS)lmax(KA) 40 3. Standards IEC61643-1 LGS9-B series of surge protectors suitable for AC power supply system 50HZ/60HZ, under 380V , such as IT, TT, TN-S, TN-CS, meet the GB18802.1-2002 and IEC61643-1: 1998 technical standards, design installation of electric rail in 35mm. Internally installed failure break off device, ...