Application Example; Fuses - Fronius String Control 250/25 DCD DF Instructions De Service

Application Example: Maximum short circuit current (I
Example
According to the criteria for selecting the correct fuse, the fuse must have
a nominal current greater than 1.8 times and less than 2.4 times the short
circuit current:
-
-
The fuse that should be selected according to the 'Fuses' table: KLK D12
with 12.0 A nominal current and 600 V AC/DC nominal voltage.

Fuses

Nominal current value
„Fuses" Table: Excerpt of Suitable Fuses, e.g., Littelfuse Fuses
5.75 A x 1.8 = 10.35 A
5.75 A x 2.4 = 13.8 A
4.0 A
5.0 A
6.0 A
7.0 A
8.0 A
) of the solar module = 5.75 A
SC
Fuse Nominal current value
KLK D 4 9.0 A
KLK D 5 10.0 A
KLK D 6 12.0 A
KLK D 7 15.0 A
KLK D 8 20.0 A
20
Fuse
KLK D 9
KLK D 10
KLK D 12
KLK D 15
KLK D 20