3RW4073-2BB35 SIEMENS

The SIRIUS 3RW4073-2BB35 soft starter is a highly reliable and efficient solution for smoothly starting three-phase asynchronous motors. This S12 soft starter is designed for motors with a power rating of up to 200 hp at 575 V and can handle a current of 205 A. It operates within a voltage range of 400-600 V AC and features a 115 V AC control supply. The device is suitable for ambient temperatures up to 50 °C. The 3RW4073-2BB35 utilizes spring-type terminals for secure and vibration-resistant connections, simplifying installation and maintenance. Soft starters like the 3RW4073-2BB35 reduce mechanical stress and voltage dips during motor start-up, extending the lifespan of both the motor and the connected equipment. By controlling the voltage applied to the motor during start-up, the soft starter minimizes inrush current and torque, preventing sudden jolts and ensuring a gradual acceleration. This leads to reduced wear and tear on belts, gears, and other mechanical components. Furthermore, the soft starter's compact design allows for easy integration into existing control panels and motor control centers.