The Siemens SIRIUS 3RW55 high performance soft starter for demanding applications for smooth starting and stopping of three-phase asynchronous motors. Stepless starting, reducing current peaks, avoiding mains voltage fluctuations during start-up, maintenance-free switching and extremely Easy Handling The integrated bypass enables the very compact design, saves energy. Intelligent monitoring functions protect the soft starter from overheating and the motor from overload. You can also limit the current during startup to an adjustable maximum value. Thanks to the 3-phase control, it is particularly suitable for large motor outputs and inside-delta circuits. It has Removable HMI with colour display for clear measurement and diagnosis displays. It has Worldwide approvals (e.g. IEC and UL / CSA).

Quick and easy commissioning
Various bus connections
ATEX & IECEx-Certifications