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SMA Sunny Island SI6048-US-10 5.75KW Battery Inverter

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  • SI6048-US-10
SMA America
MSRP: $7,937.34
$4,491.80 (You save $3,445.54)
SKU: ALG-030-03069
Note: 2-4 Week Lead Time
Condition: New
Weight: 139.00 LBS
Shipping: Calculated at checkout

 Product Description

SMA 5750W String Inverter - Sunny Island SI6048-US-10

SMA, Sunny Island 6048 battery inverter, 5750W, 120VAC, 60Hz, 56A Transfer, 48VDC, Sinewave, 100A Charger, 5 Yr Warr, with BTS, SI6048-US-10

The new SMA Sunny Island 4548-US and 6048-US inverters are based on the proven off-grid technology in the Sunny Island 5048-US but now feature 20 percent more power output. A maximum efficiency of 96 percent ensures peak production, which results in reduced diesel usage in rural communities. More flexible sizing allows for simplified system planning. And, with multicluster technology, up to 12 Sunny Islands can be integrated into off-grid power systems up to 100 kW in size.

The Sunny Island inverters are bi-directional battery-based inverter/chargers that can be used completely off-grid, or for battery backup in grid-tie systems either with charge controllers or with grid-tie inverters using AC coupling. The Sunny Island includes sine-wave output power at 120 VAC only. Two or four Sunny Island inverters can be stacked for 120/240 VAC input and output. Three Sunny Islands can also be stacked for a 120/208 VAC three phase input and output. They have low idle losses as well as a 100 A battery charger, and a battery disconnect. State-of-charge metering helps with battery management to ensure maximum battery life.

In off-grid systems, the Sunny Island can be used with any standard PWM or MPPT charge control, but will communicate with the MidNite Classic using the MNSICOMM box. It can also work with the US-40 Sunny Boy inverters in an AC-coupled system so long as the Sunny Boy inverter is set for off grid function. The frequency shift algorithm will work to make the Sunny Boy inverter back off power output to prevent the battery from too much charge. A generator can be connected to the Sunny Island’s AC input to provide backup and battery charging.

For grid-tied systems, the newest US-40 Sunny Boy inverters do not have RS485 capability so cannot communicate with the Sunny Island to change grid tie parameters to off grid. This means that the system will not be able to use frequency shift for battery charge control in a grid-tied backup system. The frequency shift in the Sunny Island will work with the newer Sunny Boy inverter in the same manner as with any other grid-tie inverter, causing it to turn on and off as the batteries are charged. In an off-grid only system, the US-40 Sunny Boy inverters can be set for off-grid use independently of the Sunny Island and will work with the frequency shift algorithm.


  • Efficient & Simple - Maximum efficiency 96%. CEC efficiency of 94.5%. Charge level calculation. Intelligent battery management. Easy commissioning with the "Quick Configuration Guide". Complete off-grid management. Excellent for grid-tied battery back up.
  • Flexible - For Sunny Island systems from 2 kW to 100 kW. Single, 120/240 split-phase and three-phase operation, connectable in parallel and modularly expandable.
  • Durable - Extreme overload capability. OptiCool active temperature management system. Five-year standard warranty.


General Information  
Manufacturer: SMA America
Product Line:
Sunny Island
Model ID:
Certifications and Safety Ratings: ul.jpg ieee.jpg fcc.jpg csa.jpg


Mechanical Data
Technology: String Inverter
18.40 x 24.10 x 9.30 inches
Weight: 139.00 lbs
Operating Temperature Range:
-25 to +60°C
Operation & Display / Multi-Function Relay: Internal / 2
Degree of Protection (According to IEC 60529): Indoors (NEMA 1)
Charge Control: IUoU Charge Procedure with Automatic Full Charge and Equalization Charge
Battery Type / Battery Capacity Range: Lead, NiCd/100 Ah … 10000 Ah


Electrical Data
Rated Grid Voltage / AC Voltage Range: 120V/105V - 132V
Rated Frequency / Frequency Rnage (Adjustable): 60Hz/55Hz...65Hz
AC Power (at 25°C/at 40°C) for 3 Hours: 6000W/5000W
Rated Power:
AC Power at 25°C:
30 Min: 7000W; 1 Min: 8400W; 3 Sec: 11000W
Rated Current / Max. Output (Peak): 48A/180A for Approx. 60 MS
Total Harmonic Factor Output Voltage/ Power Factor with Rated Power: 3 % / -1 … +1
Rated Input Voltage / AC Input Voltage Range: 120V/80V - 150V
Rated Input Frequency / Allowable Input Frequency Range: 60Hz/54Hz...66Hz
Max. AC Input Current / Adjustable: 56A/0A...56A
Max. AC Input Power: 6.7kW
Rated Input Voltage / DC Voltage Range: 48V/41V - 63V
Max. Battery Charging Current / DC Rated Charging Current: 130A/110A
Max. Efficiency / CEC Efficiency: 96% / 94%
Self-Consumption w/o Load / Standby: 25W / 4W


Document Type
logo-adobe-pdf-2.jpgSMA America SI4548-US-10 Specs Specifications
logo-adobe-pdf-2.jpgSMA America SI4548-US-10 Manual Installation Guide
Warranty 10 Year Factory Warranty
logo-adobe-pdf-2.jpgSMA America Warranty Warranty


Terms & Conditions
Shipping: Shipping Policy
Returns: Returns Policy
Payments: We accept: Visa, MasterCard, Discover, and American Express. We also accept checks, direct deposit and wire transfers for large orders.

SMA America - SMA Sunny Island SI6048-US-10 5.75KW Battery Inverter
Price: 4491.8
Condition: new
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 Warranty Information

Warranty: 10 Year Factory Warranty

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