With the new SIRIUS 3RW5 range of soft starters, Siemens offer a new generation of soft starters that satisfy simple to demanding drive requirements. This comprehensive range of devices enables efficient and future-proof machine concepts to be implemented easily and cost-effectively.

The new Sirius 3RW5 soft starters can be used in a host of applications from pumping, ventilating and compressing, to moving and processing. In addition, the soft starters feature special functions such as starting time monitoring, automatic parameterisation (depending on motor start-up), pump stop to avoid pressure peaks in piping systems, and condition monitoring with warning and alarm limits.

They are also designed to be electrically rugged to fluctuations in line voltages and for added application flexibility, the devices are suitable for global use thanks to numerous certificates and approvals such as IEC, UL and CSA.

The new Sirius 3RW5 soft starter generation is fitted with modern hybrid switching technology to ensure efficient switching and energy-saving operation. This enables low-wear switching, extends the service life of the devices and provides mechanical protection for the drive train.

A further advantage when using the new 3RW5 generation of soft starters is the provision of data, for CAx tools like Eplan, for example. In addition, the Simulation Tool for Soft Starters (STS) helps the user to make a simple product selection. The new 3RW5 soft starters can be configured and commissioned easily and in a standardized manner in the TIA Portal using the Soft Starter ES engineering software. They are simply linked up to the automation system by means of the various communication options.

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