Siemens Soft starter 3RW3038-1BB14 (3RW30381BB14)

SIRIUS Soft Starter S2 72 A, 37 kW/400 V, 40 °C AC 200-480 V, AC/DC 110-230 V screw terminals. The SIRIUS 3RW30 soft starter is designed for standard applications to provide a smooth start for three-phase asynchronous motors. It allows for stepless starting, reduces current peaks, avoids voltage fluctuations during startup, relieves the power supply network, and decreases mechanical stress on the drive. It offers significant space and wiring savings compared to star-delta starters and frequency converters, is maintenance-free, and is very easy to handle. The integrated bypass enables a very compact design and ensures lower heating in the control cabinet. It has worldwide approvals (e.g., IEC and UL/CSA). The 3RW soft starters are available for networks up to 690 V in a wide power range with different control supply voltages, consistently featuring screw and spring-loaded connections. For the 3RW30/40, there are additional variants with a 24 V control supply voltage. Some of the 3RW40 up to size S3 and all 3RW44 also offer thermistor motor protection. With the optional connection module, the soft starters can be mounted on circuit breakers, even for variants with spring-loaded connections. Simple, efficient, always up to date - the SIRIUS system modular concept.