EPS-45 45W Single-Output Power Supplies MEAN WELL EPS-45 45W Single-Output Power Supplies are a 4' x 2' series of switching power supplies that accept a universal AC input at full range. The EPS-45 series includes models ranging from 3.3VDC to 48VDC output voltage and 0 to 9A output current, including those with an L-bracket and cover. These power units operate in a temperature range of -30°C to +70°C and an altitude of up to 4000m, using free air convection cooling in a 47Hz to 63Hz input frequency range. MEAN WELL EPS-45 45W Single-Output Power Supplies feature a power-on LED light, up to 90% efficiency, and short-circuit, overload, and overvoltage protection.