Mean well 320w single output switching power supply hlg 320 series ip67 rated mean well hlg 320h 12b the mean well hlg 320h 12b is a 264w single output switching power supply from the hlg 320h series this power supply has a built in active pfc function and features a wide input range of 90 to 305v ac in addition this power supply is ip65 rated denoted by the b in the manufacturers part number a constant current level is adjustable through output cable with 1 to 10v dc or pwm signal o