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SMA Sunny Boy SBS-ABU-200-US-10 > Storage Automatic Backup Unit, 120/240VAC - 200A
SMA Sunny Boy SBS-ABU-200-US-10 > Storage Automatic Backup  Unit, 120/240VAC - 200A

Our Price: $3,833.00
Warranty: 10 Years

Product Code: SMA-SBS-ABU-200-US-10

Description Datasheet

SMA Sunny Boy SBS-ABU-200-US-10 > Storage Automatic Backup Unit, 120/240VAC - 200A

For use with Sunny Boy-Storage Inverters, SMA Sunny Boy Storage 3.8-US-10 and SMA Sunny Boy Storage 6.0-US-10.

Model SBS-ABU-200-US-10
Series SBS (Sunny Boy Storage)
Manufacturer SMA

Connection to utility grid and household distribution

Rated grid voltage 240 V
Output nom. voltage of line conductor 240 V / 120 V
Rated grid frequency 60 Hz
Maximum input and output current 200 A
Continuous unbalanced current in backup mode at 120 V 41.6 A
Maximum overload capability* 7700 W

Connection of PV inverters and battery inverters

Maximum overcurrent protection for PV inverter 50 A
Maximum overcurrent protection for battery inverter 50 A

General Data

Dimensions 19" W x 27.56" H x 9.84" D
Weight 133 lbs
Operating temperature range -25 C to 55 C (-13 F to 131 F)
Maximum ambient temperature (without derating) 45 C (113 F)
Enclosure type rating in accordance with UL 50E 3R
Protection class 1
Grid configuration 240 V : 120 V split-phase system
Cooling method Convection
Shipping Method Freight


Overcurrent protection for inverters included Standard Feature
Energy meter and current transformers included Optional Feature
Blackstart capable Standard Feature
Communication protocols to SBS-US CAN bus
Certificates and approvals UL 1741

Detailed Information

The new SMA Automatic Backup Unit is an automatic transfer switch designed specifically for use with the SMA Sunny Boy Storage inverter family. In the event of a grid failure, the automatic transfer switch disconnects the PV system, loads and the Sunny Boy Storage from the utility grid and creates a battery-backup grid. The included Backup Unit Controller coordinates grid disconnection and reconnection to ensure minimal downtime while also allowing for up to 5 kVA of unbalanced loads.

When paired with SMA Sunny Boy inverters, the Sunny Boy Storage curtails PV power production to match load in the event the battery is full to maximize use of solar production. The Automatic Backup Unit can be installed in a wide variety of installation types which makes for a versatile tool.

Product Features


  • Suitable for many use cases including whole house backup or connected to a protected loads panel
  • Allows for direct connection of PV and Sunny Boy Storage inverters


  • 200 Amp rated bus allows for large panels to be connected to it
  • Up to 5 kVA of unbalanced load
  • Outdoor rated for harsh environments

Simple Installation

  • Pre-wired and tested to make for easy commissioning
  • Plug-n-play installation with Sunny Boy Storage inverter
  • Easy setup and commissioning via Sunny Boy Storage webUI


  • AC coupled architecture allows for new PV or retrofit installation
  • Up to three high-voltage batteries can be connected in a single SMA residential storage solution

Also known as:

Sunny Boy Storage
SB Storage
Storage Automatic Backup Unit
Storage Automatic Back-Up Unit

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