Mitsubishi Electric PV-PNS03ATL-GER Operation Manual page 58

DC disconnector
This is inserted between the PV module and the
PV inverter, makes or breaks the circuit on the
PV module side.
PV inverter
This converts direct-current energy generated by
the PV module into alternating-current energy.
AC disconnector
This is inserted between the grid and the PV
inverter, makes or breaks the circuit on the grid
side.
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