The only actual DC breakers I am aware of (I also checked the boat's wiring diagram in the owners manual) are:
3. 2-50A and 1-150A breakers that isolate: (1) the CB fuse block from the house batteries, (2) the Cave fuse block from the house batteries and (3) the Helm fuse blocks and Windlass from the house batteries. On my boat, these breakers are located in the port lazarette along with house batteries and ACRs.
Good luck!