Siemens 6SE6440-2UC21-1BA1 Variable Frequency Drive

Siemens 6SE6440-2UC21-1BA1 MICROMASTER 440 is a compact 1.1 kW variable-frequency drive that accepts a 200–240 V AC single-phase input to power a 3-phase induction motor, making it suitable for space-constrained automation tasks. It provides 47–63 Hz operation, 1.1 kW continuous output, and overload capability of 150% for 60 seconds and 200% for 3 seconds, with a square-law torque profile to handle brief overloads in conveyors, pumps, and fans. The unit measures 202 x 149 x 172 mm (H x W x D), carries IP20 protection, and operates across an ambient range of -10 to +50 C, delivered without AOP/BOP and without a filter. Ideal for retrofit or new installations requiring a small-footprint, reliable drive for speed control of small motors.