I purchased and use this one - search ebay - 72A-130BMLEN-02 240V L6-30 12xC13 outlet PDU Zero U NetApp 150-00027+A0 - Tested

Just don't setup a two power supply setup on one rig like I did and plugged in one power supply to one circuit protected side and the other power supply to the other circuit protected side.  fried 4 cards and think its because the ground difference caused higher voltage on 12v rail powering cards.  Not sure, but the other rigs that have two power supplies are fine, but they are plugged into the same side of the PDU above.