Ac-dc switching power supplies deliver 200-400W of continuous power

POWER SOURCES UNLIMITED PUB Series fully-enclosed ac-dc power supplies deliver up to 400 Watts with convection cooling. Units are touch safe to IP2 protection and measure less than 1U height, with flexible mounting options. PUB200/250/300/400 Series are highly efficient single outputs of 12Vdc, 24Vdc, 36Vdc and 48Vdc. Units are constructed on a printed circuit board with a metal enclosed format for mechanical support and heat sinking. Universal input of 90-264Vac and active power factor correction meets EN 6100-3-2 Class A and D. Standard features includes adjustable voltage trim, virtually no acoustic noise, terminal block connectors and comprehensive protection circuitry against over-voltage, over-current and over-temperature. Operating temperature range is -20 to +50C.  http://www.psui.com