... East,south Africa,American 3.Certificate: CE,CCC,ISO Disconnect switch 630A/4P Altitude not more than 2000m;The range of ... .It is used for making and breaking circuit infrequently.YGLSeries Load isolation switches can be divided into 18 specs from 1250A to ... (Theree ploes+switch neutral pole),applied to make and break circuit breaker or electric isolate,over 1000A is only for electric isolation.