Siemens 6SE3290-0DC87-0FA4 Soft Starter Module is a compact drive accessory that soft-starts three-phase motors by gradually ramping voltage to limit inrush current and reduce mechanical stress on startup. It is rated for 440/250V AC at 50/60 Hz and 25 A, with the ECO documentation listing this part number alongside 6SE3290-0DC87-0FB4 as variants in the same family of soft-start modules. This model is described as compatible with Siemens drive systems such as mm400/3, mmv400/3, mm550/3, mmv550/3, mm750/3, and mmv750/3, and is typically installed in control panels or enclosures where motor control is needed.
