This 2 X 150 watt remote magnetic transformer converts standard 120 volt line-voltage to 12 volts, providing the necessary voltage for power a 2-Circuit Monorail low voltage lighting system. Transformer includes fast acting secondary circuit breakers that will safely turn the system off should a short occur. Once the short has been removed, the breakers can be reset. Powers lamps totaling up to 300 watts. Transformer must be installed in a remote, but accessible location such as above the ceiling or in a closet, and should be located no more than 20 feet from the required power feed option, sold separately. ETL listed. 12.5 inch length x 6.1 inch width x 5.9 inch height.