MS series three-phase aluminum asynchronous motor’s overall design is finished with superior quality materials. This product is in line with IEC standards as well as Europe EFF2 efficiency standards and EFF1 standards upon request. The product is cast and molded from aluminum alloy with removable bottoms and a variety of installing methods. Both products are environmentally friendly while still retaining key features such as: elite operation quality, energy conservation, attractive appearance, consistent reliability, high efficiency, low noise and minimal vibration etc. This motor series is widely used in air compressor, water pump, refrigeration, medical equipment and small machinery. OPERATING CONDITIONS: 1:Elevation: Not exceeding 1000 meters 2:Ambient temperature: -15º C≤ 0≤ 40º C 3:Rated Voltage: 380V or 440V 4:Working mode: Continuous (S1) 5:Insulation grade: Class B or F 6:Protection grade: IP54 IP44 7:Cooling method: ICO141 fan-cooling mode 8:Installation Method: B3, B5, B14, B35 9:Connection: Y Start-connection for 3KW and below Delta-connection for 4KW or more