Your power supply is what should be protecting the miners. This is why you use repurposed server PSUs and not ATX psus that were never meant for high load 24/7 operation. If you have a quality power supply, the only surge protection you need is from your breakers.
Sorry. I didn't quite get it. And that's just because I don't know much about this stuff.
So per your experience, the Bitmain power supply protect you from surge? But I still need something for my breakers? I am confused