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Discontinued Product

Wholesale Solar no longer offers the SMA Sunny Boy 7700TL-US-22 Inverter

The following item(s) may be suitable for replacement:

Or See our other Inverters

Please call to verify compatibility.

SMA Sunny Boy 7700TL-US-22 Inverter

SMA logo
SMA Inverters:
  • Offers a wide range of inverters to suit most any solar panel or system.
  • Forefront of inverter technology

Product Information

Model Part No. Watts Input
Type Size & Weight Price
SMA Sunny Boy 7700TL-US-22 Inverter29317238000W600VDC208/240VACDual Input MPPT20.5 × 7.3 × 19.3 in
70 lbs


Sunny Boy 7700TL-US-22
The Sunny Boy TL-US series features new and innovative SMA technologies including the first UL 1741 certified transformerless inverter. This American built grid-tie inverter has an outstanding maximum efficiency of 97.3%.

  • Dual maximum power point tracking
  • Optional integrated AFCI to help meet NEC 2011 690.11
  • Integrated DC disconnect
  • Built-in LCD screen for output display
  • Flexible design and simple installation
  • Class leading CEC efficiency 96.5%
  • Reduced weight for easier installation
  • Built in America (qualifies for ARRA) Made in America
  • Secure Power Supply (SPS) provides daytime power if grid goes down

By incorporating transformerless topology into the design of this inverter, SMA has improved a variety of specifications increasing the speed of payback. This also means high efficiency and reduced weight.

The SB7700TL-US-22 is an improvement over the first version (the SB7700TL-US-12) because of the upgrade to dual maximum power point tracking. This feature is especially useful for systems designed with multiple roof orientations or partially shaded areas.

Secure Power Supply
Sunny Boy 7700TL-US-22 comes with a Secure Power Supply that is able to send up to 1,500 watts of power to a dedicated outlet in the case of daytime grid failure. See video below.

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Features & Attributes

  • Dimensions (LxWxH): 20.5 × 7.3 × 19.3 inches
  • Weight: 70 lbs
  • Transformerless topology reduces weight while increasing efficiency
  • Dual maximum power point tracking
  • Secure power supply
  • OptiCool™ active temperature management
  • Improved efficiency up to 97.3%
  • Built-in LCD output display
  • Integrated switch-disconnect
  • Free Sunny Portal monitoring with global access
  • Comprehensive SMA communications and data collection options
  • SMA power balancer for three-phase grid connection
  • Rugged cast aluminum outdoor rated enclosure
  • Wall mounting plate with anti-theft lock
  • Isolation monitoring
  • Surge voltage protection
  • Interruption protection
  • LED indicator for malfunction
  • Ground fault protection
  • Rugged outdoor enclosure
  • MPN: Sb7700TL-US-22
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SMA Sunny Boy 7700TL-US-22 Inverter

Product Manual
Spec. Sheet
Installation Manual
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About SMA

Key Points:

  • Offers a wide range of inverters to suit most any solar panel or system.
  • Forefront of Inverter technology.

Founded in 1981, SMA Solar Technologies is headquartered in Niestetal, Germany, and has a worldwide presence in 15 different countries including the United States and Canada.

SMA touts themselves as the world's largest producer of solar inverters and monitoring systems for photovoltaic applications. With a wide range of inverters, they have one for every module type and power class including grid-tied, offgrid, or backup applications. Wholesale Solar designs their UL listed Solar Sky Gridtie Systems with SMA SunnyBoy inverters.

While SMA inverters are designed in Germany, the Sunny Central, the Sunny Island, and SMA SunnyBoy inverters in the 3 kW to 7 kW range are assembled in their new plant in Denver, Colorado. These inverters qualify for the ARRA recovery act and are UL and cUL listed.

Continually pushing the envelope when it comes to technology, SMA launched its own SMA solar academy in Rocklin, California, in April 2011. Their Solar Academy is equipped with the latest high-tech teaching tools and demonstration inverters to complement its comprehensive range of courses on photovoltaics and SMA products.

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