For sale is a High-Power AC/DC Welding Current rectifier. 3-Pole. The main section of this current controller is 16-3/8" (D) X 5-3/8" (W) X 7-3/4" (H); not including the mounting brackets and protrusions. This unit was taken out of a working arc welder that I have removed from service in my shop. The current controller is in good working condition. The brass bar attached to one of the poles is not included. It can be used for single phase or three phase.