SMA America, LLC
4 Product Description
Installation Manual
SB3-5TLUS22-IA-en-10
19
4.2 DC Disconnect
The DC Disconnect is a DC switch-disconnector which safely disconnects the PV array from the inverter.
Figure 5: DC Disconnect design
Symbols on the DC Disconnect
Item
Designation
A
Lug for grounding the DC Disconnect enclosure
B
Enclosure opening
C
Lug for hanging in the retainer
D
Type label 1
E
Knockouts
F
Type label 2
G
Enclosure lid screws
H
Enclosure lid
I
Switch
Symbol
Designation
Explanation
Equipment grounding
conductor terminal
Connection for the DC equipment
grounding conductor
Grounding electrode conductor
terminal
Connection for the grounding electrode
conductor