... , edifices, airports, hospitals, industrial andmining establishments as three-phase 50Hz, voltage 380V and as follow electric systemsuited for the electricity, the ... ) Nominal peak reliability current: 105kA, 176kA 8) Power frequency test voltage: a) Main circuit: 2,500V/min b) Auxiliary circuit: 1 ... personal security of fixing, mending and operator GCK/GCL Low-Voltage drawable Switch Cabinet