Reliance Electric 78155-77R is a rectifier gate stack (part number 78155-77R) used as the power-conversion element in industrial drive and control circuits. It is described as a RECTIFIER in the General Controls category, signaling its role in converting AC to DC within automation equipment. The part is offered through surplus, refurbished, or new-in-box channels by third-party suppliers, with listings identifying it specifically as a RELIANCE ELECTRIC rectifier gate stack. This legacy component is typically used in industrial automation and drive systems that require a rectification stage.
