3RW4073-6BB45 SIEMENS

The SIRIUS 3RW4073-6BB45 soft starter is a highly efficient and reliable solution for smoothly starting three-phase asynchronous motors. This particular model, sized S12, is designed for motors with a power rating of up to 160 kW when operating at 500 V and an ambient temperature of 40°C. It supports a wide voltage range of 400-600 V AC for the main circuit and requires a 230 V AC control supply voltage. The soft starter effectively reduces the mechanical stress and voltage dips associated with direct-on-line or star-delta starting methods. By gradually increasing the voltage applied to the motor, it minimizes inrush current and torque peaks, extending the lifespan of both the motor and connected equipment. The 3RW4073-6BB45 features screw terminals for easy and secure electrical connections. It provides comprehensive protection functions, including overload protection, to safeguard the motor against damage. This soft starter is ideal for applications requiring smooth and controlled motor starting, such as pumps, fans, compressors, and conveyors. Its compact design and robust construction make it suitable for a variety of industrial environments. Furthermore, it contributes to energy efficiency by optimizing the starting process and reducing energy waste.