Siemens 6SE9211-1DA40 Variable Frequency Drive

The Siemens MicroMaster MM37/3 6SE9211-1DA40 is an unfiltered 3-phase variable-frequency drive designed for 380–500 V mains, delivering 0.37 kW (about 0.5 hp) of continuous output with a 150% overload capacity for 60 seconds. Its compact enclosure measures 175 x 73 x 141 mm (H x W x D) and carries IP20 protection, making it suitable for panel and machine installations in industrial environments. It accepts 50/60 Hz input and is rated for an ambient operating temperature range of 0–50 C. As part of the MicroMaster MM37 family, the 6SE9211-1DA40 provides reliable speed control for small 3-phase motors in automation projects requiring a compact 380–500 V drive.