MICROMASTER 440 built-in class A filter 380-480 V 3 AC +10/-10% 47-63 Hz constant torque 37 kW overload 150% 60 s, 200% 3 s square-law torque 45 kW 650x 275x 245 (HxWxD) degree of protection IP20 ambient temperature -10+50 °C without AOP/BOP