1.Brand:Suntree Disconnect switch 250A/3P 2.Special in Middle East, ... .Certificate: CE,CCC,ISO 4.AC 50H Disconnect switch 250A/3P Altitude not more than 2000m;The range ... shall tell it to the manufacturer in advance.ApplicationAC 50Hz,rated voltage 660V,DC rated voltage 440V,rated current ... poles(Theree ploes+switch neutral pole),applied to make and break circuit breaker or electric isolate,over 1000A is ...