Siemens 6SE6440-2UD31-1CA1 Variable Frequency Drive

Siemens Micromaster 440 6SE6440-2UD31-1CA1 is a 3‑phase AC variable frequency drive designed for 380–480 V motors, delivered without an internal line filter for streamlined installation. It provides 11 kW nominal output (15 kW square‑law torque under overload), with 150% overload for 60 seconds and 200% for 3 seconds, and it operates across 47–63 Hz. The unit measures 245 × 185 × 195 mm (H × W × D), carries IP20 protection, and tolerates an ambient temperature range of -10 to +50 °C without AOP/BOP options. It is well suited to industrial applications such as conveyors, pumps, fans, and machine tools where precise speed and torque control of three‑phase motors is required.