The "Plus" version of the popular MNDC250 adds another din rail, allowing for up to 10 din rail mount breakers. A 250A/125VDC inverter breaker is included, as are two din rail cover plates and two panel mount plates.
The panel mount plates allow for mounting ¾" 125VDC breakers ranging from 60-100A. You can also fit the MNDC-GFP80 plus four more panel mount breakers in the enclosure. Another common configuration is a single MNDC-GFP, one ¾" panel mount breaker, and five din rail breakers (and of course the included 250A inverter breaker).