Siemens 6SE6430-2UD31-8DA0 Variable Frequency Drive

Siemens 6SE6430-2UD31-8DA0 MICROMASTER 430 is an 18.5 kW (25 HP) three‑phase AC drive designed for indoor use, offered as the “without filter” variant and intended to control 380–480 V, 3‑phase induction motors. It accepts 47–63 Hz input with a voltage tolerance of +10%/−10% and comes in a compact enclosure measuring 520 × 275 × 245 mm (H × W × D) with IP20 protection, suitable for standard industrial environments without AOP/BOP options. The drive supports significant transient loading, with overload ratings of 110% for 60 seconds and 140% for 3 seconds, and delivers square‑law torque characteristics to smooth startup and respond to load changes in applications such as pumps, fans, conveyors, and machine tools. Its operating temperature range is −10 °C to +40 °C, making it compatible with typical factory floors where space is at a premium and reliable speed control for 3‑phase motors is required.