3RW3028-1BB04 SIEMENS

The SIRIUS 3RW3028-1BB04 soft starter is a highly efficient and compact device designed for smooth starting and stopping of three-phase asynchronous motors. This soft starter is specifically sized at S0 and is suitable for motors with a rated current of up to 38 A. It is capable of handling motor power up to 18.5 kW when operating at 400 V and an ambient temperature of 40 °C. The device supports a wide voltage range of 200-480 V AC for the main circuit, providing flexibility in various power supply environments. The control circuit operates on 24 V AC/DC, ensuring compatibility with different control systems. Electrical connections are made via screw terminals, which offer a reliable and secure method of wiring. The 3RW3028-1BB04 soft starter helps to reduce mechanical stress on the motor and driven equipment, extending their lifespan. Furthermore, it minimizes voltage dips in the power supply during motor starts, improving overall system stability. This soft starter is an ideal solution for applications requiring controlled starting and stopping of motors, such as pumps, fans, and compressors.