The ABB PST250 1SFA895013R7020 is a softstarter sized for a 250 A in-line motor load, delivering 132 kW at 400 V. That 250 A figure is the rated operational current for standard in-line connection — the number you match to your motor FLA for continuous duty under AC-53a or similar soft-start profiles. Inside-delta wiring unlocks 430 A / 220 kW at 400 V, which matters when you need to start a larger motor through a reduced-current topology. The built-in electronic overload protection eliminates the need for a separate thermal relay in most panels — one less component to source, wire, and coordinate. Current limit is adjustable from 1.5 to 7x Ie, giving you headroom for high-inertia loads like centrifuges or crushers without oversizing the starter. Ramp time spans 0 to 120 seconds, with initial voltage adjustable 30–70 % and a step-down special ramp from 100 down to 30 %. That range covers soft starts for conveyors, pumps, and fans where you need a gentle acceleration curve to avoid mechanical shock or pressure surges.
Main circuit terminals are bars with a 10.2 mm hole — expect lug-type connections, not screw-clamp. Control circuit wiring accepts 1 x 2.5 mm² rigid, torqued to 0.5 N·m. Supply circuit similarly takes 1 x 2.5 mm² rigid. The main terminals carry an IP00 protection rating per IEC 60529 and IEC 60947-1, meaning the unit is intended for enclosure mounting where the cabinet provides the environmental seal. Communication uses a FieldBusPlug (standard) interface — a modular plug-in connector for fieldbus connection, not hardwired terminals. The control supply is 100...250 V AC, while the control circuit also accepts 24 V DC operation for logic-level interfacing with a PLC.