1SYN352342R3800

ABB 1SYN352342R3800 (SDA-50) is a fully automatic Star-Delta motor starter designed for controlled starting and protection of 50 HP / 37 kW three-phase induction motors. ABB identifies this exact catalogue number as the SDA-50, 220–230 V coil version in its Star-Delta starter range. The starter initially connects the motor windings in star configuration to reduce starting current and mechanical stress. After the preset transition period, it automatically changes to delta configuration for normal motor operation. ABB’s SDA starter range is intended for motor ON/OFF control and protection, including overload and single-phasing protection through the starter relay arrangement. Typical applications include pumps, compressors, fans, blowers, conveyors, HVAC systems, machine tools and industrial process equipment.