ICT's 55.2 VDC 25 A 1 RU DC Power supply, 1200 W output. The Pro series line of DC power supplies is a high performance, cost effective, high efficiency 1RU DC power supply designed for a variety of mission-critical applications. The core of the Pro series is derived from the state-of-the-art ICT digital series power supply design that delivers high efficiency, power factor corrected AC input, space-saving 1RU chassis, FCC Class B low noise rating, and an optional battery backup terminal with integrated low voltage disconnect.