SMA WB 3300-11 Installation - Manual (Page 19)

SMA Solar Technology AG Assembly
Installation Manual WB33-38-IA-IEN120940 19
3. Attach the wall mounting bracket to the wall using
suitable screws and washers.
4. Hook the inverter by its top mounting plates into the
wall mounting bracket with both attachments of the
wall bracket passing through the cutouts on the
inverter.
5. Visual inspection: The inverter is only correctly
mounted when both rear panel attachments slightly
protrude through the cutouts.