New Compact Device for Soft Starting of Motors

24.04.2008

Siemens Industry Automation is expanding its product range of Sirius soft starters with the compact Sirius 3RW30. The devices in four frame sizes enable soft starting of motors in standard applications such as pumps, conveyor belts, or fans up to 55 kilowatts at 400 volts.

The Sirius 3RW30 soft starter improves the startup characteristics of motors with two-phase polarity balancing, and avoids mechanical loads, voltage fluctuations, and current peaks. This protects not only the drive system but also the power network and thus minimizes maintenance overhead and expensive current peaks. The user can easily set the startup time and the starting voltage using two potentiometers on the device. In the 45-millimeter frame size, the 3RW30 takes the place of a star-delta switch and saves up to 70 percent of control cabinet space while

delivering the same performance power. The device can be easily configured and installed using three motor leads and variable connections.

About Siemens Industry Sector

The Siemens Industry Sector (Erlangen) is the world's leading supplier of production, transport and building systems. Integrated hardware and software technologies combined with industry-specific solutions enable Siemens to enhance the productivity and efficiency of its customers in industry and infrastructure. The Sector comprises six Divisions: Building Technologies, Industry Automation, Industry Solutions, Mobility, Drive Technologies and Osram. In fiscal 2007 Siemens Industry generated sales of around EUR 40 billion (unconsolidated) with approximately 209,000 employees worldwide.

About Siemens Industry Automation Division

The Siemens Industry Automation Division (Nuremberg) is worldwide leading in the fields of automation systems, low-voltage switchgear and industrial software. Its portfolio ranges from standard products for the manufacturing and process industry to solutions for whole industries and systems that encompass the automation of entire automobile production facilities and chemical plants. As a leading software supplier, Industry Automation optimizes the entire value added chain of manufacturers – from product design and development to production, sales, and a wide range of maintenance services.

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