The Schneider ATS48D88YS338 is a soft starter from the Altistart 48 range, designed for three-phase asynchronous motors in heavy-duty industrial and pump applications. Rated 88 A at 690 V supply (50/60 Hz), it uses AC-53A utilisation category — meaning it handles the high inrush and extended ramp times typical of motor starting without exceeding thermal limits. Built-in protection covers phase failure on the line side and thermal protection for both the motor and the starter itself, reducing the need for separate overload relays in many installations.
The ATS48D88YS338 is classified as obsolete by Schneider Electric.
Five discrete inputs are available — Stop, Run, LI3, LI4, plus a PTC thermistor input (750 Ω trip at 25 °C) for direct motor thermal protection. The PTC input accepts a 1000 to 2000 m motor cable run with a 2.2 % current derating per additional 100 m beyond the base rating — factor this into the installation if the motor is remote from the starter. Supply frequency is 50/60 Hz ±5 %, which covers standard industrial mains worldwide without adjustment.