For sale is a 400 Amp Bridge Rectifier for use with High-Power AC/DC Arc Welders, etc. 3-Pole design. The main section of this rectifier is 20-1/2" (W) X 6-1/2" (D) X 13" (H); not including the mounting brackets and protrusions. This unit was taken out of a working Miller FC-6 arc welder that I have removed from service and parted out. It is in good working condition. It can be used for single phase or three phase AC to DC conversion. Very nice because it solves all problems of mounting, isolating and cooling of the rectifier diodes. Just screw it down to whatever you are building and use it.