To protect a DC source (such as a solar charge controller) from short circuits and provide a means of disconnecting the DC source, over-current protection (a DC breaker) must be mounted.
This is a breaker that is mounted on the wall. With the mounting foot, it can be fixed to the back of a panel enclosure. Schneider XW Charge Controllers and Schneider Inverters are recommended for use with the Schneider PDP (Power Distribution Panel) or other DC control panels.