Surface mount single-pole breakers with screw lug wire terminals.
The 10-110A sizes are 1 inch wide and have mounting feet used to attach them to the back panel in an enclosure. Use these breakers in the Xantrex XW distribution panel, the Magnum MP and MMP panels, and for custom DC control panels.
175A and 250A sizes are 1.5 inches wide, require one rear mount kit each. They fit the large-breaker space in the front of the older Xantrex/Trace DC disconnect, or can be used for custom DC panels.