Both Square D and C-H make a 2-pole surge device. As long as you have space they are a quick install, try to mount as close to the main breaker as possible. Cost is less than $100, and offer a warrantee to cover connected equipment, with some exceptions.
Intermatic offers 3 levels of protection and is quite a bit more money, $700 or so for the hightest level of protection. Contact Pete Lewis @ Intermatic @ 815-675-7039 for help with their products.
I will try to find Intermatics prices and levels of protection and edit this later.
