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SMA Inverter - 6000W, 208/240V (Sunny Boy 6.0-US)


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A smart grid-tie inverter capable of delivering up to 2000 Watts of power during a grid outage.

SKU: 51433

SMA Inverter - 6000W, 208/240V (Sunny Boy 6.0-US)

New lower price! The new and improved Sunny Boy-US series of grid-tie transformerless inverters features a wealth of improvements and joins SMA's lineup of field-proven PV inverters. The most impressive feature is its Secure Power Supply: the ability to send up to 2000 Watts to a dedicated outlet inside the house when grid power is offline but the sun is still shining - without the use of batteries. To use the Secure Power Supply, you'll need a switch, outlet, junction box, conduit, and wiring (not included) that will be wired directly to the Sunny Boy inverter to receive these 2000 Watts (installation instructions here).

The Sunny Boy 6.0-US inverter is rated at 6000 Watts at 240 volts (and 5200 Watts at 208 volts). It features multiple independent input channels - each with SMA's OptiTrac™ Global Peak - allowing for hundreds of stringing configurations for flexible system design and improved performance for PV arrays that face the challenges of complex roof shapes and shading.

An integrated DC disconnect and the free SMA Android phone app that lets you monitor and manage your PV system from anywhere round out the robust set of features on the Sunny Boy-US. And thanks to SMA's Installation Assistant, installation has never been easier.

SMA Sunny Boy 6.0-US Inverter Features

  • Secure Power Supply feature offers 2000W of power in the event of a grid outage
  • Hundreds of stringing configurations
  • Multiple independent MPPTs
  • Proprietary OptiTrac™ Global Peak shade mitigation technology
  • Off-grid ready
  • Transformerless
  • Improved communication capabilities that eliminate the need to install additional equipment
  • Monitoring and management through the free Android phone app
  • Integrated DC disconnect
  • Enhanced AFCI technology improves resistance against false tripping while improving sensitivity in detecting real arcs
  • Two-part enclosure separates the connection unit from the power unit, allowing for expedited servicing

SMA Sunny Boy 6.0-US Inverter Specs

  • 21.1" W x 28.5" H x 7.8" D
  • 57 lbs
  • Input strings: 1-3
  • Input voltage: 100 - 600VDC
  • Continuous power: 5200W at 208V, 6000W at 240V
  • Surge rating: 5200W at 208V, 6000W at 240V
  • Output voltage: 208/240VAC
  • Output frequency: 60 Hz / 50 Hz
  • Max output current: 25A
  • Weighted/peak efficiency: 96.5% / 97.2% at 208V, 97% / 97.6% at 240V
  • Manufacturer: SMA
  • Model number: 6.0-US 40

This product is shipped directly from the manufacturer or distributor and will arrive separately from any other products ordered. Availability estimates are based on average lead times and can vary due to stock status and location.

Returns & Replacements
Regularly stocked, non-special-ordered, and non-custom-built items can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 30%. Freight shipping is non-refundable.

For more, please read our full return policy.

    • Easy to install, easy to use, good software.6/27/2018

    By Paul

    I have three of these inverters (purchased from another source) that I installed on a system of my own design. They were easy to intstall, wire, commission, and run. I had some slight confusion over the use of a neutral wire with the 240 volt connection (I'm in the USA, Idaho) but it turns out it is not needed and I didn't connect it. But that was it. I had no trouble starting them, setting up the software, and getting them online to sunnyportal on the web so I could monitor them. I even used SMA's sunnydesign web site to help design the system. I use the web and the iPhone/iPad apps to monitor the system. In my case Idaho Power did not ask for any of the power company software features to be turned on so I can't comment on that functionality. I consider myself an advanced amateur when it comes to electrical and mechanical projects but I really think these are fairly straight forward if you have some experience with solar. I will buy more of SMA's equipment for another home project in the future. I should note that when thinking about the DC cables for an inverter longer DC cables are better than long AC cables using the highest possible DC voltage allowed. I tend to think the opposite way because a battery setup needs the opposite setup. The inverter is sensitive to small AC deviations because of the net metering safety issues and long AC cables can create these issues. In my system I have 680 feet of DC cable between the panels and the inverter and about 15 feet between the inverter output and the net meter. I've had my system running for six months.

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