The SMA BU-SLCT-US-50 is an automatic backup switch with an integrated breaker panel designed to provide backup power to essential household circuits during utility outages. It works with compatible SMA Sunny Boy Smart Energy hybrid inverters to help maintain power to selected loads using available solar energy.
Suitable for residential solar energy storage systems, this backup solution automatically switches between grid power and backup operation. Its integrated subpanel supports up to seven circuits, helping homeowners maintain power to essential electrical loads without manual switching during an outage.
Key Features