EOS ULP40 40 W Switch Mode Power Supply. Introducing the EOS Power 40 W ULP40 open frame switch mode Industrial power supply. The EOS Power Supplies have a universal input and are compact 3 x 2 x0.75 in in size.. Features and Benefits. 3 x 2 x0.75 inch Form factor 40 W Convection Efficiencies 85% Typical -40 to 70°C operating temperature 2 m Hours, Telcordia - SR332 – issue 3 MTBF Standby Power ; 0.3 W. Cover Kit for (M) ULP40 Series st.no. ; 1368833 1368833