I was going to say to try swapping the interruptor from one of the unused panels, assuming it is identical (power down the system first, hot-swapping is frowned on with 1A2).
But, if I read your last post right, you are saying that there were 4 blown fuses on the 584 panel? I don't know if I'm reading that right, because it would seem that nothing would be working at that point. If that is true, then you need to find out what caused that. Two possible causes come to mind: A wildly malfunctioning power supply, or a 25-pair amphenol laying in a puddle on the floor somewhere.
Jim
**************************************************
Speaking from a secure undisclosed location.
