3RW4038-2BB15 SIEMENS

The SIRIUS 3RW4038-2BB15 soft starter is a highly efficient and reliable solution for smoothly starting three-phase asynchronous motors. This particular model is an S2 size soft starter, designed for motors with a current rating of up to 72 A. It is suitable for motors with a power rating of 45 kW when operating at 500 V and at an ambient temperature of 40 degrees Celsius. The device is designed to operate within a voltage range of 400-600 V AC, making it compatible with various power grids. The control voltage for this soft starter is 110-230 V AC/DC, providing flexibility in control circuit design. It utilizes spring-type terminals, ensuring secure and vibration-resistant connections, which simplifies installation and maintenance. Soft starters like the 3RW4038-2BB15 reduce mechanical stress on the motor and driven equipment during startup, extending their lifespan. By limiting the starting current, they also minimize voltage drops in the power supply, improving overall system stability. This soft starter provides a cost-effective and space-saving alternative to traditional starting methods like star-delta starters.