Siemens’ new Sirius soft starters enable safe, efficient motor switching
- First soft starter series with integrated Safe Torque Off function
- Enhanced protection when shutting down electric motors
- High functional density saves space and decreases cost
- First soft starter series with integrated Safe Torque Off function
- Enhanced protection when shutting down electric motors
- High functional density saves space and decreases cost
Siemens Smart Infrastructure expanded its soft starters portfolio for motors, with the launch of Sirius 3RW55 Failsafe and Sirius 3RW50. Soft starters ensure electrical motors used in industry and infrastructure are protected during startup and ramp-down. The Sirius 3RW55 Failsafe soft starters are the first to feature the integrated Safe Torque Off (STO) function. As specified in safety standards, the protection function for electrical drive systems ensures that torque-generating energy stops acting when motors are turned off, preventing an unwanted restart. Control panel manufacturers no longer require using separate individual components to have this function, which reduces the time and effort for wiring and maintenance works and saves space in the control cabinet. In addition, the switching time of the integrated solution is significantly shorter than for conventional, electromechanical components.
Siemens Smart Infrastructure expanded its soft starters portfolio for motors, with the launch of Sirius 3RW55 Failsafe and Sirius 3RW50.
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