1SYN284322R8600

ABB 1SYN284322R8600 (SDA-35) is an industrial Star-Delta motor starter designed for controlled starting of larger three-phase induction motors. ABB officially lists this catalogue number as the SDA-35 with 400–415 V AC coil under its Manual Motor Starters / Star-Delta Starter product range. The Star-Delta starting method initially connects the motor windings in the star configuration, reducing the starting current compared with Direct-On-Line starting. After the starting period, the circuit changes to delta connection for normal motor operation. This arrangement is commonly used where reduced starting current and lower mechanical stress are required. Typical applications include pumps, compressors, blowers, fans, conveyors, HVAC systems, machine tools and industrial process machinery.