Structure Size : 225 - 355 Rated Power : 45 - 315 kW Pole Number : 2 - 4 Protection Class : IP23 Voltage : 380 V (Contact us for different voltages.) Frequency : 50 Hz (Contact us for different frequencies and speed control devices.) Build Type : B3 (Contact us for different structure types.) Mechanical Structure : Body and covers are cast iron, legs are ductile iron Cooling Type : It is supplied by the air that the propeller at the back of the engine circulates inside the body. (Internal Cooling) Insulation Class : F / H Working Regime : S1 Ambient temperature : 40 C Motor Protection : Thermistor and Motor Protection Relay