1SFA896115R1100

ABB 1SFA896115R1100 PSR105-600-11 Soft starter is a compact 105 A three-phase soft starter from ABB’s PSR series, designed for smooth starting and stopping of AC induction motors. It operates with a 208–600 V AC main circuit voltage and a 24 V AC/DC control supply. ABB’s IEC selection table rates this model for approximately 55 kW at 400 V and 55 kW at 500 V, with 30 kW at 230 V. The PSR105-600-11 uses two-phase voltage-ramp control to reduce sudden starting torque, mechanical shock and electrical stress compared with direct-on-line motor starting. It incorporates a built-in bypass, helping reduce energy losses and heat generation after the motor reaches normal running speed. The unit provides RUN and TOR normally-open relay outputs, while start/stop ramp parameters are adjusted through three front-mounted potentiometers. ABB states that the compact PSR range is suitable for motor currents from 3–105 A and can manage up to 100 starts per hour. Common applications include pumps, fans, compressors and conveyors. Optional Fieldbus communication can be added through an external adapter and Fieldbus plug.