SMA America, LLC
3 Product Description
User Manual
SB30-40-BA-eng-BUS121010
19
3.5 Arc-Fault Circuit Interrupter (AFCI)
In accordance with the
National Electrical Code
®
, Article 690.11, the Sunny Boy is equipped with
a system for electric arc detection and interruption.
An electric arc with a power of 300 W or greater must be interrupted by the AFCI in the time specified
by UL 1699B. A tripped AFCI may only be reset manually.
Only the following types of Sunny Boy are equipped with an automatic arc-fault circuit interrupter:
• SB 3000-US-12
• SB 3800-US-12
• SB 4000-US-12
The 2011 edition of the
National Electrical Code
®
, Article 690.11 stipulates that newly installed PV
plants attached to a building must be fitted with a means of detecting and disconnection of serial
electric arcs on the PV side.
The automatic arc-fault circuit interrupter can be deactivated in the "Installer" mode via the
communication device if this function is not desired.
