DC Power Systems are available in 8-300 kW power ratings.

Press Release Summary:



Available in shelf, rack, and cabinet configurations, 48 V Guardian(TM) Series DC power systems deliver power densities exceeding 27 W per cubic in. or 25 kW per one rack unit. Their rectifier subsystems feature wide-range 90-300 Vac input with high-input-voltage shutdown and ability to withstand loss of phase or neutral without damage. Rack and cabinet systems can deliver up to 500 A with up to 720 A-hr of back-up battery capability.



Original Press Release:



Power-One Introduces Guardian(TM) Series at Intelec 2007



Guardian(TM) Shelf, Rack, and Cabinet DC Power Systems are Power Dense, Reliable, and Cost Effective

CAMARILLO, Calif.--Oct. 1, 2007--Power-One, Inc. (Nasdaq:PWER) today announced the introduction of the Guardian(TM) Series of DC power systems. These 48V solutions are available in a range of power ratings, from 8kW to over 300kW in shelf, rack, and cabinet configurations. Power densities exceeding 27 watts per cubic inch, or 25kW per one rack unit, maximize the system space dedicated to revenue-generating equipment, and/or batteries, in fixed and mobile network applications.

All Guardian systems provide industry-leading reliability and the capability to operate in environments with poor power-grid quality. Their rectifier subsystems feature a wide-range 90 to 300VAC input with high-input-voltage shutdown and the ability to withstand a loss of phase or neutral without damage. Rectifier reliability is also increased through the use of an advanced resonant soft-switching topology, which significantly reduces component stresses.

Rack and cabinet systems can deliver up to 500 amps with up to 720Ah of back-up battery capability. Medium and large power requirements are also supported with 1200A per bay, up to 6400A. State-of-the-art controllers provide sophisticated management capabilities that extend battery life.

Bill Yeates, Power-One's CEO, commented, "Power-One's Guardian Series offers a unique combination of power density, reliability, and broad applications capabilities. In addition to very competitive initial acquisition costs, the Guardian Series attains over 92% power-conversion efficiencies, saving energy and reducing operation costs."

The annual Intelec conference examines and analyzes the latest developments in telecommunications energy systems and related power processing devices and circuits. This year's event is being held from September 30th to October 4th 2007, at the Rome Marriott Park Hotel in Rome, Italy. Intelec 2007 attendees are encouraged to stop by Power-One's booth, number 13/22, to view the Guardian(TM) Series and talk with company representatives. For additional information on Intelec 2007 please visit the conference website at intelec.org/2007/index.html .

About Power-One

Power-One is a leading designer and manufacturer of power conversion products sold primarily to OEM customers in the telecommunications and server/storage markets; as well as data communications equipment manufacturers. Power-One's high-reliability products are also used in applications such as test equipment, high-end industrial applications, and alternative energy. Power-One, with headquarters in Camarillo, CA, has approximately 4,000 employees with manufacturing and/or R&D operations in the United States, Dominican Republic, Italy, Hungary, Switzerland, Slovakia, Ireland and China. For information on Power-One and its products, visit the company's Web site at www.power-one.com.

CONTACT: Power-One, Inc.
Dave Hage, Executive Vice President, 805-987-8741

SOURCE: Power-One, Inc.

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