Siemens 20 Amp Whole House Surge Protected vs Circuit Breaker

Looking for a whole house surge protection for my new basement. 

Siemens seems to be the best company out there but its most recommended item (Siemens FS140 ) is out of stock everywhere. 

Here ia an alternative: 

Siemens FirstSurge Power 60 kA Surge Protector Bundle 

What about this product? Looks like a circuit breaker with surge protection. 

20 Amp 6.5 in. Whole House Surge Protected-Circuit Breaker

which product makes more sense? Circuit breaker has some MOVs. I understand this can potentially limit current.