Looking for a ballpark price estimate off list on this: http://www.eltek.com/detail_products.epl?id=1142848&cat=24677&k1=&k2=&k3=&k4=&close=1
It has a distribution bus/fuse/breaker panel in the top 1U, the bottom 1U populated with 4 x 2000W rectifiers. Or something else equivalent that is 2U to max 3U in size, 8kW rated at 230/240VAC input.
