SMA America, LLC
Electrical Connection
Installation Guide
SB50US-80US-eng-IUS112633
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2. Hold the enclosure lid. Tighten the 6 screws with the
conical spring washers through the holes in the
enclosure lid into the threaded bores of the
enclosure.
3. Check whether the enclosure lid is laying evenly on
the enclosure.
4. Tighten the 6 screws with 53 in-lbs. (6 Nm).
6.8 Closing the SMA DC Disconnect
.
1. Mount the cover onto the SMA DC Disconnect and
insert the rotary handle.
2. Turn the rotary handle to position "0". Tighten the
screw on the right side of the rotary handle. Use a
cross-head screwdriver (screw used: UNC no.
5x
3
⁄
4
in. cross-head, flat-head).
The toothing of the conical spring washers must
point toward the enclosure lid.
Do not damage the thread of the screws.
Do not use electric tools to tighten the screws.
All fastening elements are required for the grounding and weatherproof sealing of the
Sunny Boy. To fasten the enclosure lid, use all 6 screws with conical spring washers.
All string fuses must be securely mounted.
