The EQN72-500V is a voltage regulating device made by Gossen Muller & Weigert. It is a 72 VDC, 500 VA switched-mode power supply designed to ensure a stable power supply to a variety of electronics and electrical devices. It also features over-voltage, under-voltage and overload protection. The device has a wide range of input from 90-250VAC and provides an output adjustable from 0-72VDC with a maximum current rating of 6.9 amps.