There is no need to dig on whether I am a power engineer, this forum has had many a sleuth determine that I am not. Yes, the 3 pole breaker is the connection, pardon my language.
Right there you have just admitted you don't know jack yet you've been trying to defend this rubbish to real engineers.

It has every type of cooling huh? First of all, water cooling requires a radiator which usually requires fans to cool it unless it's significantly large (which wouldn't leave much room). Oil cooled? So it's filled with mineral oil?

Also, even if the fans only come on for a a surge arrest that seems like an an aweful lot of cooling for something that consumes 70W ( less than the human body at about 100W when resting).
Also we've grilled to death already how it's impossible to use tiny amounts of power to correct large amounts, that's basic thermodynamics.
Backfeeding breakers is also iffy, only certain types allow it. Drawing power from them and backfeeding them is even more iffy. Due to the above, the backfed power, or clamping a surge might trip the breaker. You have succeeded in making a self defeating device that will shut off it's own connection when it tries to surge protect.
