SMA 200A Automatic Backup Unit w/ Energy Meter (SKU Part Number SBS-ABU-200-US-10)

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.

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 A rated bus allows for large panels to be connected to it. Up to 5 kVA of unbalanced load
• Outdoor rated for harsh environments. 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 installations
• Up to three high-voltage batteries can be connected in a single SMA residential storage solution
• While alternative backup systems offer merely a transfer switch and require additional hardware purchases, the new SMA Automatic Backup Unit (ABU) is a truly integrated solution for whole home backup power. The ABU consists of several components. The first is a 200 Amp rated contactor, which automatically disconnects the home energy system from grid power during a power outage. The integrated autotransformer balances up to 5 kVA of imbalance across phases, reducing the potential for system interruption during backup mode operation due to imbalanced loads within the home. The solution also includes built-in energy consumption metering with pre-installed current transformers, eliminating the need for additional hardware and labor. Two 50 Amp breakers are included for landing PV and energy storage inverter output, which also reduces hardware needs. Finally, the ABU features an SMA backup controller, which manages and stabilizes the microgrid by monitoring solar generation, load consumption, and battery state-of-charge
  

Specifications

• Type: With Energy Meter
• Communication: CAN Bus
• Frequency Rating: 60 Hz
• Dimensions:
  • Width: 500 mm
  • Height: 700 mm
  • Depth: 250 mm
• Operating Temperature: -25 to 55°C
• Enclosure Rating: Type 3R
• Cooling: Convection
• Grid Type: 240V, 120V Split-Phase System
• Grid Voltage: 240 V
• Nominal Voltage of Line Conductor: 240/120 V
• Maximum Input & Output Current: 200 A
• Continuous Unbalanced Current in Backup Mode at 120V: 41.6 A
• Maximum Overload Capability: 7700 W
• Maximum Overcurrent Protection:
  • PV Inverter: 50 A
  • Battery Inverter: 50 A
• Protection Class: 1
• Standards: UL 1741, cULus Listed
• Warranty: 10 Years
• Weight: 133 lb
  

Documents 

• Specification Sheet
• Instruction/Installation Manual