Are people running several rigs off of one breaker ? It seems kinda bunky to do that. If you get a serge  on one  machine and trip the breaker all your machines go down instead of that one rig. I have each rig on individual circuits just in case.
I didn't do too much research into that product but I have used a beefy one on a ccie rack which is about 6 routers 4 switches,a controller with some Asa's and an ips  so I'm pretty sure they have heavier duty ones as well cause they run these units in data centers.

Edit: on second thought it should still work because you'd only need to set the psu on the mainboard if you're running auxiliary psu's because it's only the one that's actually plugged into the mobo that would need to be reset to restart the machine