Ea elektro automatik ea psi 8000 3u rack mount programmable power supplies ea elektro automatik 09230437 this 3u rack mount programmable psu 500v 90a from ea elektro automatik has been designed in a 19in rack housing with 3u height and is fitted with an output terminal located in the rear panel equipped with a flexible auto ranging output stage to provide a higher output voltage by reduced output current or a higher output current by reduced output voltage always regulated by the maximum o