Mean well 320w single output switching power supply with pfc sp 320 series mean well sp 320 24 the mean well sp 320 24 is a 312w single output power supply with pfc function from the sp 320 series this universal ac input enclosed switching power supply is highly reliable and has forced air cooling from a built in fan this psu has a wide voltage input range of 88 to 264v ac and 124 to 370v dc making it ideal for worldwide use it is compact in design and ideal for automated machines and app