Maintenance SMA America, LLC
86 SB30-40US-IUS103030 Installation Guide
DC Disconnect requirements
National Electrical Code
®
690.15-18 allows the use of fuse holders as a suitable means of
disconnecting PV arrays for servicing. Additional DC disconnects external to the inverter may be
required by the local authority having jurisdiction.
PV string fuses
The SMA DC Disconnect is shipped with 15 A, 600 Vdc fuses in fuse holders. The maximum string
fuse rating for the SMA DC Disconnect is 20 A.
WARNING
Risk of electric shock and arc flash due to removing fuses under load.
Serious injuries will result.
Do not remove a fuse while the inverter is under load.
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