... accords with standards:GB1985, IEC129, GB/T11022. GW5 outdoor AC Disconnect Switch is applicable for rated voltage 40.5kv, 72.5kv or 126kv, AC ... 50Hz to make or break high voltage circuit with ... withstand current(KA)20, 31.5(4s)There are earthing switch type: no earthing, single earthing, double earthing as per your ...