The new power supply unit with adjustable output voltage from 24 to 28 volts features a wide-range input from 340 to 550 V AC and supplies 20-ampere rated current. With an overall width of just 100 millimeters and no need to calculate lateral clearance for installation, the primary-switched power supply only requires minimum space on the DIN rail.
The high efficiency of more than 91 percent ensures minimum loss of energy and low heat generation in the control cabinet. The new unitsupplies 1.5 times the rated current up to five seconds long for starting up loads with high power requirements. Sitop PSU300S supplies 20 amperes of rated current for ambient temperatures of 0 to 60 degrees and can be operated up to 70 degrees with derating. At temperatures of less than 45 degrees, the stabilized power supply continuously provides up to 20 percent overload current.
With the 3-phase wide range input of 340 to 550 V AC and international certification, the new Sitop PSU300S can be used all over the world. Even with extreme voltage fluctuations, the unit steadily provides 24 volts. Additional Sitop modules are available for increased protection against disturbances from the external network or for 24V circuits, for configuring a redundant or uninterruptible DC power supply, or for selectivity in 24V feeders for example. The operating state of the "24 V DC o.k." can be evaluated by a controller using an integrated floating signaling contact.
The Siemens Industry Sector (Erlangen, Germany) is the worldwide leading supplier of environmentally friendly production, transportation, building and lighting technologies. With integrated automation technologies and comprehensive industry-specific solutions, Siemens increases the productivity, efficiency and flexibility of its customers in the fields of industry and infrastructure. The Sector consists of six divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility and Osram. With around 207,000 employees worldwide (September 30), Siemens Industry achieved in fiscal year 2009 total sales of approximately €35 billion.
The Siemens Industry Automation Division (Nuremberg, Germany) is a worldwide leader in the fields of automation systems, industrial controls and industrial software. Its portfolio ranges from standard products for the manufacturing and process industries to solutions for whole industrial sectors 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. With around 39,000 employees worldwide (September 30), Siemens Industry Automation achieved sales of €7.0 billion in fiscal year 2009.
Reference Number: IIA2010042229e
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