SMA America, LLC
4 Product Description
Installation Manual
SB3-5TLUS22-IA-en-10
17
4 Product Description
4.1 Sunny Boy
The Sunny Boy is a transformerless PV inverter which converts the direct current of a PV array into
grid-compliant alternating current and feeds it into the power distribution grid.
Figure 4: Sunny Boy design
Item
Designation
A
Cooling fins
B
Type label
C
Display
D
Lower enclosure lid screws
E
Antenna for ZigBee
®
communication*
* optional
F
LEDs
G
DC Disconnect
H
Lower enclosure lid
I
Upper enclosure lid