... 1,Isolating Control and protective Switch 2,690V 45A Control and Protective Switch 3,Isolating switch 4,IEC,CE Certified 690V ... as short-circuit current. FunctionSPKBO-G control the protection switch modular structure of a single product type, integrating the ... be realized General (not frequent start) motor loads, frequent starter motor load, the load distribution control and protection circuit. Main ...