Fanuc Power Supply Unit PSU. Fanuc 0 to Fanuc 21. With over 40 different types of Fanuc Power Supplies in stock covering 16 different Control series with at least 150 varient controls. The range is comprehensive and includes new replacement Fanuc power supply units for series 0-C, 0-D, 0-F and system 3, 6 controls. With service exchange available for many Fanuc PSU’s built.