Hardwire 50 amp Progressive Industries surge protector

[Lost Traveller]

This is going to be a silly question. I'm getting ready to install my surge protector. It looks like I can follow the directions ok. I watched the videos from Progressive and the guy kept on talking about the transfer box. I have a 2017 PrimeTime 5th wheel Crusader315. I am assuming I don't have any kind of transfer box and just wire in the surge protector before the breaker box.
Is that right? Thanks for any help.
The Lost Travelers
Bruce and Connie

[snipe]

Yes, the surge protector goes between the incoming power cable and the breaker box.