These remote electronic transformers convert standard 120 volt line voltage to 12 volts, providing the necessary voltage for powering Two-Circuit MonoRail low-voltage lighting system. Each transformer includes fast-acting short circuit and overload protection that will safely turn the system off should a short occur. Once the short has been removed the breakers can be reset. Transformer power lamps totaling up to 1200 watts. Mounted on a plate with junction boxes.