... 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 ... motor.When isolator knife replace fuse, this switch does not have the electric circuit to overload with short-circuits the protection function ... : 4, 6, 10, 16, 20, 25, 32, 35, 40, 50, 63, 80, 100, 125, 160, 200, 224, 250, 300, 315, 355 ...