SIRIUS Soft Starter S2 72 A, 45 kW/500 V, 40 °C AC 400-600 V, AC/DC 24 V screw terminals thermistor motor protection Soft Starter SIRIUS 3RW40 for standard applications for gentle starting and stopping of three-phase asynchronous motors. Stepless starting, reducing current peaks, avoiding voltage fluctuations during startup, relieving the power supply network, reducing mechanical stress on the drive, significant space and wiring savings compared to star-delta starters and frequency converters, maintenance-free switching and very easy handling. The integrated bypass allows for a very compact design and ensures lower heating in the control cabinet. Intelligent monitoring functions protect the soft starter from overheating and the motor from overload. Additionally, you can limit the current during startup to an adjustable maximum value. With the integrated remote reset, you can quickly and easily resolve faults from a distance. Worldwide approvals, including for explosion-hazardous applications. The 3RW soft starters are available for networks up to 690 V in a wide power range with different control supply voltages and consistently feature screw and spring terminals. The 3RW30/40 also has 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 variants with spring terminals. The optional fan allows for an even more compact design in the control cabinet. Simple, efficient, always up to date - the SIRIUS system modular concept.