BU-STRT-US-50 SMA Smart Energy Backup Start Module

SMA BU-STRT-US-50 — Smart Energy Backup Start Module

The SMA BU-STRT-US-50 Backup Start Module enables the SMA Backup Secure functionality in Sunny Boy Smart Energy hybrid inverters. With its own integrated battery, it provides black-start capability during grid outages — allowing the inverter to restart independently from the battery or PV array, even after a complete power loss or overnight outage.

Key Features

• Black Start Capability — integrated battery allows the inverter to start up independently of the grid
• Backup Secure Enablement — required hardware to activate SMA Backup Secure emergency power functionality
• Rapid Shutdown Compatible — required in NEC-compliant rapid shutdown systems to enable Backup Secure
• Overnight Operation — maintains backup power functionality through multi-day outages
• Direct Inverter Installation — installs inside the SMA inverter; powers essential loads via dedicated socket
• Part Number BU-STRT-US-50 — OEM SMA accessory, 453.5g, 60-month warranty

Compatible With

• SMA Sunny Boy Smart Energy hybrid inverters (Backup Secure systems)

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