tatooedtrackmen, I suspect that the amount of energy circuit can absorb depends on physical size of components used (MOVs) and it might be related to overall size. Breaker is rated 10kA max current while physically larger whole house protector from Square D is rated 80kA. I might install this protector one day in addition to circuit breaker.
Here is another one rated 100kA
https://www.homedepot.com/p/Siemens-FirstSurge-Plus-100kA-Whole-House-Surge-Protection-Device-FS100/206560186
Here is another one rated 100kA
https://www.homedepot.com/p/Siemens-FirstSurge-Plus-100kA-Whole-House-Surge-Protection-Device-FS100/206560186