Sirius Soft Starter 200-480 V 171 A, AC 110-250 V screw terminals, Sirius 3RW55 High Performance soft starter for demanding applications, designed for the gentle start and stop of three-phase asynchronous motors. Features include stepless starting, reduction of current peaks, prevention of voltage fluctuations during startup, relief of the power supply network, reduction of mechanical stress on the drive, and significant savings in space and wiring compared to star-delta starters and frequency converters. It offers maintenance-free switching and is extremely easy to handle. The integrated bypass allows for 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. Additionally, you can limit the current during startup to an adjustable maximum value. Thanks to three-phase control, it is particularly suitable for large motor outputs and square root 3 circuits. The innovative torque control ensures optimal motor startup. Easy and quick commissioning is facilitated by auto-parameterization or an application assistant. Predictive maintenance planning is supported through condition monitoring. A detachable HMI with a color display provides clear measurement and diagnostic displays. Global approvals (e.g., IEC and UL/CSA) are available. The High Performance soft starters 3RW55 are available for networks up to 690 V in a power range up to 560 kW, with 24 V or 110-250 V control supply voltages, and consistently feature screw and spring-loaded connections. An analog output and thermistor motor protection are integral parts of the High Performance soft starters. Optional plug-in communication modules enable connection via PROFINET, PROFIBUS, and Modbus TCP. The built-in HMI module can also be mounted on the control cabinet door. The soft starters 3RW55 replace the proven series 3RW44. Sirius soft starters 3RW5 - as flexible as your task.