Siemens 3RW3047-2BB04

SIRIUS Soft Starter S3 106 A, 55 kW/400 V, 40 °C AC 200-480 V, AC/DC 24 V spring terminals. The SIRIUS 3RW30 soft starter is designed for standard applications for the gentle starting of three-phase asynchronous motors. It allows for stepless starting, reduces current peaks, avoids voltage fluctuations in the grid during startup, eases the load on the power supply network, and decreases mechanical stress on the drive. Additionally, it offers significant space and wiring savings compared to star-delta starters and frequency converters, is maintenance-free, and easy to handle. The integrated bypass ensures a compact design and lower heating in the control cabinet. Worldwide approvals (e.g., IEC and UL/CSA) are available. The 3RW soft starters are available for networks up to 690 V in a wide power range with different control supply voltages and are consistently equipped with screw and spring terminals. The 3RW30/40 series includes additional variants with a 24 V control supply voltage. Some of the 3RW40 up to size S3, as well as all 3RW44, also offer thermistor motor protection. With the optional connection module, the soft starters can be mounted on circuit breakers, even for the variants with spring terminals. Simple, efficient, always up to date - the SIRIUS system modular concept.