3RW4028-2BB04 SIEMENS

The SIRIUS 3RW4028-2BB04 soft starter is a highly efficient and reliable solution for smoothly starting three-phase asynchronous motors. This particular model is an S0 size soft starter, designed for motors with an operating current of up to 38 A. It is suitable for motors with a power rating of up to 18.5 kW when connected to a 400 V power supply, and it is rated for operation in ambient temperatures up to 40°C. The device can be operated with a supply voltage ranging from 200 to 480 V AC, offering flexibility in various power grid environments. The control voltage is 24 V AC/DC, ensuring compatibility with a wide range of control systems. The soft starter utilizes spring-type terminals, which provide a secure and vibration-resistant connection, simplifying installation and maintenance. By reducing the starting current and mechanical stress on the motor and driven equipment, the 3RW4028-2BB04 extends the lifespan of the entire system. Furthermore, it contributes to energy savings by minimizing voltage drops during motor start-up. This soft starter is an ideal choice for applications requiring smooth and controlled motor starting, such as pumps, fans, and compressors.