BU-SLCT-US-50 SMA Smart Energy Backup Select Module

SMA BU-SLCT-US-50 — Smart Energy Backup Select Module

The SMA BU-SLCT-US-50 Backup Select is an external single-phase backup load management module for the Sunny Boy Smart Energy hybrid inverter. It provides automatic, seamless transition between on-grid and off-grid mode — keeping critical appliances powered during outages using solar energy, with or without a battery. No manual intervention required.

Key Features

• Automatic Grid/Off-Grid Switching — seamless transition to backup mode during outages; no manual action needed
• Battery-Free Operation — can supply backup power from PV alone when the sun is shining
• Up to 5,760W Backup Output — 3,840W for SBSE 3.8–7.7 models; 5,760W for SBSE 9.6 and 11.5 models
• 5 x 15A / 120V Outlets — plus 2 x 20A / 120V circuits for critical load management
• Single-Phase 120V AC — designed for North American residential systems
• External Box Design — 260mm × 506mm, 6.09kg; installs alongside the inverter
• Part Number BU-SLCT-US-50 — OEM SMA accessory, 32/48A, 60-month warranty

Compatible With

• SMA Sunny Boy Smart Energy (SBSE) hybrid inverters — 3.8, 5.0, 6.0, 7.7, 9.6, and 11.5 kW models

Contact us for pricing. Ships from Thunder Battery — Canada's trusted battery dealer.