Siemens Soft starter

SIRIUS Soft Starter 200-600 V 63 A, AC/DC 24 V spring-loaded terminals Analog output. The SIRIUS 3RW52 General Performance soft starter is designed for simple applications requiring smooth starting and stopping of three-phase asynchronous motors. It allows for stepless starting, reduces current peaks, avoids voltage fluctuations in the supply during startup, relieves 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, maintenance-free switching, and easy handling.

The integrated bypass enables a very compact design, saves energy, and ensures lower heating in the control cabinet. Intelligent monitoring functions protect the soft starter from overheating and the motor from overload. Furthermore, the current during startup can be limited to an adjustable maximum value. Thanks to the three-phase control, it is particularly suitable for large motor powers and star-delta configurations.

The innovative Soft-Torque function ensures a gentle motor startup. With the integrated remote reset, faults can be quickly and easily resolved from a distance. The soft starter has worldwide approvals (e.g., IEC and UL/CSA).

The General Performance soft starters 3RW52 are available for networks up to 600 V in a power range of up to 560 kW with 24 V or 110-250 V control supply voltages, consistently featuring screw and spring-loaded connections. Different device variants are available for analog output and thermistor motor protection. Optional plug-in communication modules enable connection via PROFINET, PROFIBUS, and ModbusTCP. Various HMI modules are available for installation in the device or control cabinet door. Soft Starter SIRIUS 3RW5 - as flexible as your task.