SMA Backup Select Automatic Transfer Switch for Sunny Boy Smart Energy - BU-SLCT-US-50

Features

Unmatched flexibility
• Seamlessly integrates with SMA Sunny Boy Smart Energy hybrid inverters
• Protects the most critical circuits automatically - five 15 A / 120 V outlets and two 20 A/ 120 V circuits
• Customizable switching timing between backup and grid power to match your needs
• NEMA 3R weatherproof rating - install anywhere, indoors or out

Easy Installation & Setup
• Flexible installation with four-sided conduit entries and straightforward wiring
• Commission quickly using the SMA 360° mobile app
• Meets code requirements for indoor installations with SMA RSI switch

Transform Your SBSE-US-50 System
• Add automatic backup power capability to your existing hybrid inverter
• Keep 7 essential household circuits powered during outages
• No manual switching required - operates automatically when you need it most

Ensure seamless energy security with SMA Backup Select—an affordable, entry-level backup solution.
Designed to pair with the Sunny Boy Smart Energy, SMA Backup Select provides reliable partial backup power, keeping your essential home loads running while the sun is shining.

This single-phase automatic backup switch includes an integrated breaker panel, offering a cost-effective and flexible power source during grid outages.

With a 7 single-pole breaker backup box and power ratings of 3,840 W¹ and 5,760 W², SMA Backup Select is an ideal
solution for energy security.