Mean well 750w single output switching power supply rsp 750 series mean well rsp 750 12 p the mean well rsp 750 12 is a 750w single output power supply from the rsp 750 series this ac dc enclosed switching power supply has a low profile of 1u and is highly reliable it runs with an efficiency of up to 90 with forced air cooling by a built in dc fan with fan speed control function p p the rsp 750 12 is ideal for applications requiring energy savings no noise limited space for install