The ABB 1SFA898109R7008 is a PSTX105 soft starter for three-phase induction motors. Main circuit rated 208...600 V AC covers standard low-voltage supplies across North America and Europe. Control circuit is 24 V DC, which keeps the logic supply isolated from the power bus — common in PLC-controlled panels where a separate 24 VDC supply feeds the I/O rack and the starter coil.
The 208...600 V AC operational voltage covers three-phase systems within that range. The -25 to +60 °C ambient range and 24 V DC control are standard for industrial panels.
The PSTX105 is a DIN-rail-mount soft starter sized for a standard enclosure. It replaces the traditional star-delta starter footprint with a single device that ramps the motor voltage up over a configurable time, reducing inrush current and mechanical shock to the load. Typical applications are conveyors, pumps, fans, and compressors where a full-voltage start would trip the upstream breaker or snap a coupling. The 24 V DC control interface ties directly to a PLC digital output module — no extra relay between the controller and the starter.