DC circuit breaker switch

The DC switch-breaker of the solar field: it is placed at the "solar" input of the regulator. It must be calibrated at a value slightly greater than the short circuit current of the panel or solar field. It does not have a safety function, since it will not react to the short-circuiting of the panels, but on the other hand is very useful to cut the solar power during the controls or the maintenance.
 The DC switch-breaker of the controller: it goes to the "battery" output of the controller, and protects it against the battery current in the event of a fault. It must be calibrated to the same value as the maximum current at the "consumer" output, but may, if there is no consumer connected to this output, be calibrated to the same value as the circuit-breaker regulator input.
   Reference: DCDC10A