Siemens 6SE6420-2UD21-1AA1 AC Drive Controller Module

The Siemens 6SE6420-2UD21-1AA1 is a MICROMASTER 420 AC drive designed to control a three‑phase motor from a 380–480 VAC supply, delivering 1.1 kW (1.5 HP) of output power. This unfiltered 3AC model operates at 47–63 Hz with overload capability of 150% for 60 seconds and fits the smallest MICROMASTER 420 frame, measuring 173 × 73 × 149 mm (H × W × D) with IP20 protection and an operating ambient range of -10°C to +50°C. It is rated for constant‑torque operation up to 1.1 kW, making it well suited for precise, variable‑speed control of light‑industrial tasks. The part number 6SE6420-2UD21-1AA1 identifies a compact drive in Siemens' MICROMASTER 420 family, engineered to convert incoming 380–480 VAC power into controlled motor speed for a range of standard automation applications.