... .designed for use with three phase induction motors JJR2 Digital intelligent soft starterapply to AC 50HZ,380V,660V,11~500KW of ... : IP20Environmental conditions: Below an altitude of 3000m,environmental temperature -25°C~+40°C,rated humidity ≤ 90%, Non-condensing,non-flammable,explosive,easy ... and max operation current online8) LCD displayWiring Diagram Dimension : Digital intelligent soft starter