... rated current 160A-630A,mainly used as power switch,isolating switch and emergency switch with function of protection in the circuit with ... 690V AC 400V2.3 Rated heating current160A, 250A, 400A , 630A2.4 Rated operating current400V:160A ,250A, 400A, 630A, 690V:100A, 200A ... : The fuse is conformity with GB13539.1,relation of switch and fusing unit (see table 1)2.7 Withstanding voltage:interphase 12kV ...