Siemens 6SE6440-2UD17-5AA1 Variable Frequency Drive

Siemens 6SE6440-2UD17-5AA1 MICROMASTER 440 is a compact 3‑phase variable‑frequency drive designed for 380–480 V networks, delivering 0.75 kW (1.0 hp) to a connected motor. The drive accepts 3‑phase AC input at 47–63 Hz and provides an adjustable output frequency from 0 to 650 Hz, with a continuous output current of 2.2 A and a higher input current around 3.7 A. It offers overload capability of 150% for 60 seconds and 200% for 3 seconds to handle brief peak loads, and it carries IP20 protection for indoor installations. This variant is specified as “without filter,” suitable where external filtration is not required. The enclosure measures 173 × 73 × 149 mm (H × W × D). Ambient operating temperature ranges from -10 to +50 °C, with storage/transport ratings extending beyond that. The MM440 family is widely used for conveyors, fans, pumps, and machine tools, offering straightforward V/ F control and robust motor compatibility in a compact package.