4 Product Description
SMA America, LLC
14
CU600-1000US-IA-en-10
Installation Manual
4 Product Description
4.1 Connection Unit
The Connection Unit is a String-Combiner to which up to eight strings can be connected.
Figure 3: Design of the Connection Unit
In the Connection Unit the PV array strings are combined and routed into the inverter via cables. The
integrated fuse holders are designed to be used with string fuses for overcurrent protection. The
Connection Unit is equipped with a DC switch-disconnector and therefore serves as a DC
disconnection unit.
Symbols on the Connection Unit
Item
Designation
A
DC switch-disconnector
B
Captive screws of the lid
C
Type label
Symbol
Explanation
Equipment grounding
No galvanic isolation
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