4 Product Description SMA Solar Technology AG
12 SMB-IA-en-10 Installation Manual
4 Product Description
4.1 Sunny Main Box
The Sunny Main Box is a DC main distribution which gathers the outgoing string cables from the
DC sub-distributions and leads them to the central inverter via the DC main cable.
Figure4: Components of the Sunny Main Box
The Sunny Main Box is standardly equipped with 8 inputs. The Sunny Main Box is mounted on the
wall.
Position Designation
A Switch cabinet lock
B Door
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