Phoenix Contact UNO Single Phase Power Supplies. The Phoenix Contact UNO PSU ‘s have basic functionality, making them the ideal solution for loads up to 240 W, particularly in compact control boxes thanks to their high power density and slim dimensions. The DIN rail mounting, power supply units have a high degree of efficiency and low idling losses ensuring a high level of energy efficiency. Features and Benefits. Save energy thanks to particularly low no-load losses and high efficiency Slim line housing in 22.5 mm, 35 mm and 55 mm designs Housing depth of just 84 mm Temperature range from -25 °C to +70 °C makes them suitable for outdoor installation Available in various performance classes and overall widths AC input: single-phase DC output: power up to 240 W