WEST KINGSTON, R.I., July 28 - American Power Conversion (Nasdaq: APCC) (APC) today announced that APC's InfraStruXure(TM) architecture now offers fully compatible DC power systems for on-demand network-critical physical infrastructure (NCPI). APC's InfraStruXure architecture fully integrates power, cooling, management, and services within a rack-optimized design. The expanded InfraStruXure with Magnum series DC systems, available worldwide, helps solve problems encountered with powering DC equipment in a data center. This solution set provides network managers with the ability to easily integrate AC uninterruptible power supplies and DC power systems into their networks.

DC power systems utilize switch mode power supply technology, via rectifiers, to convert utility voltage in alternating current or AC into predominately 48V DC to power system loads and charge batteries.

Uninterruptible power supplies utilizing battery backup ensure availability of DC-powered devices during a utility supply failure. Depending on application usage, most data center DC power loads are in the 5-400Amps range. Common data center DC power applications include private branch exchanges (PBX's), VoIP switches, T1/T3/Fiber customer premise equipment (CPE) interface boxes, and high density blade server racks.

With the convergence of voice, video, and data, this integrated approach helps guarantee compatibility and results in lower costs. The system can be integrated into the IT row with APC's new wide NetShelter(R) VX racks that are available for "cable-dense" VoIP and telecommunications applications. In addition, battery costs are minimized since all critical AC and DC loads can share a central battery that provides reserve time.

"The expansion of APC's InfraStruXure to DC signifies continued commitment to research and development of high quality, integrated, and scalable DC power solutions that help solve problems encountered with powering DC equipment in the NCPI," said Dwight Sperry, APC's group general manager of Enterprise Systems and Business Networks. "These systems, available for installation worldwide, are easily integrated with APC's InfraStruXure architecture that helps increase availability, improve adaptability and reduce costs."

These products are part of APC's new focus on offering DC components, systems and accessories that are integrated into the InfraStruXure system. As a result, APC is transitioning away from stand-alone DC systems and components, but will continue to provide product support to its existing DC system customers.

APC's Magnum series DC systems feature a built-in Web/SNMP management capability that allows network managers to proactively manage and monitor the unit over a network or remotely via the Web. As a result, network managers now can obtain status information and access data and event logs via their web browser or network management system. Also, maintenance can be scheduled giving the network manager the piece of mind that the system is operating properly, saving both time and money by reducing the number of on-site maintenance visits.

APC's Magnum series DC systems are currently available up to 100Amps worldwide. They will be available up to 450Amps in Europe, the Middle East, and Africa in the third quarter of 2004 and available in North America later this year. Estimated resale pricing in Europe for a Magnum XS base system starts at 4,803 EUR or approximately $5,800 USD.

To learn more about all of APC's award-winning power protection and management solutions and services offering, visit APC Web site at http://www.apc.com or call APC at 800-877-4080.

About American Power Conversion

Founded in 1981, American Power Conversion is a leading provider of global, end-to-end solutions for real-time infrastructure. APC's comprehensive products and services offering, designed for both home and corporate environments, improves the availability, manageability and performance of sensitive electronic, network, communication and industrial equipment of all sizes. Headquartered in West Kingston, Rhode Island, APC reported sales of $1.46 billion for the year ended December 31, 2003, and is a Fortune 1000, Nasdaq 100 and S&P 500 Company. All trademarks are the property of their owners.