The Sirius 3RW55 Failsafe soft starters are suited for starting and stopping operations of high-power motors with a rated output of 5.5 to 560 kilowatt (kW) at 400 volts (V).
Source URL: Siemens announces launch of Sirius 3RW55 Failsafe and Sirius 3RW50 soft starters
Source Website: Factory Automation – Automation.com