In order to add electrical circuits to an armored vehicle at work, I added two 15A DC breakers.
If the bed leveling is set properly, there will be almost no "elephant foot", and the breakers will fit perfectly.
The breakers I used are located here: https://amzn.to/2YTB8Bl
I used Hatchbox black PLA: https://amzn.to/2Z5jeXp
The hardware to mount the breakers are two 8-32 screws per breaker. To mount the panel, I used 6-32 hardware around the perimeter of the plate.
I've included the Fusion 360 file if someone wants to make a much larger breaker panel for their RV or boat.
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