The label on the side is certainly more reliable than my memory
The 150 volt 100 AIC rating is adequate on the PV side because PV arrays are current limited. Breakers connected directly to the battery should have a fuse unless the AIC is greater than the short circuit current from the battery bank. The 125 volt 10,000 AIC for the panel mount breakers is sufficient for many (maybe most) battery banks used in RE power systems. For large battery banks a fuse may be needed. A fuse is always a good idea because it provides protection for anyone that doesn't know to disconnect the batteries before working in the dc panel.
Just checked a few on my shelf and found quite a range on the labels. Some don't show a spec for AIC. Some show 10,000 ac AIC. And some show 10,000 AIC ac and 5,000 AIC dc. I think the 5,000 AIC dc is correct for all of the small panel mount breakers; that's what Carlingswitch's spec sheet shows. With a 5000 AIC dc rating even more battery banks should be protected with a fuse!