I should have read twice before I responded......anyway blue seas do not manufacturer their own breakers, those are Carlingswitch A series, builders use these as well
I have been using MidNite Breakers for quite a while now. They market the Carlingswitch series D breaker as the MidNite MNDC, they are not thermal, they are magnetic/hydraulic. They do not heat up. Carlingswitch has been a industrial cornerstone for many years, MidNite also rebadged the Circuit Breaker International din rail breaker as the MNPV breaker, these are also magnetic/hydraulic old ones are polarized, current versions are not
These are a bit pricey, not too bad but on the cheap there is Schneider Electric’s Square D QO Line of breakers,
Please note...only the QO....not the homeline (AC only)
they are marketed for AC but are UL listed for DC up to 48 volts so are appropriate for 12 and 24 volts, the older ones were certified at 72 volts but Schneider recertifications them at 48 volts so probably not so good on a 48 volt system,
Now for a cheap box to put a few in. The Square D QO200, 2 spaces meant as a air conditioner safety cutoff box, it comes with a 2 pole switch which can be removed and replaced by QO breakers....home cheepo $13.00
Most AC breakers weld and burn when exposed to DC, the QO is the only one that is UL certified for DC.
