... 160A~630A mainly used as power switch, isolating switch and emergency switch with function of protection in the circuit with high short circuit current and ... motor circuit,this switch is not used to ... , NT2 for 400A and NT3 for 630ARated currents: 4, 6, 10, 16, 20, 25, 32, 35, 40, 50, 63, 80, 100 ...