SUNNY BOY 3.0-US / 3.8-US / 5.0-US / 6.0-US / 7.0-US / 7.7-US Where to buy

The Sunny Boy-US series features a wealth of improvements and joins SMA’s lineup of field-proven solar technology backed by the world’s #1 service team. The world’s first Secure Power Supply now delivers up to 2,000 W of opportunity power when the grid goes down and the sun is shining. Installation has never been easier thanks to SMA’s Installation Assistant, direct access via smartphone, and integrated DC disconnect.

The Sunny Boy’s multiple independent input channels, each with SMA’s OptiTrac™ Global Peak, mean hundreds of stringing configurations for flexible system design while solving the challenges of complex roofs and shading.

Same Name, New Game

The residential PV market is changing rapidly, and we understand that your bottom line matters more than ever. That’s why we’ve designed a superior residential solution that will help you decrease costs throughout all stages of your business model.

Read on to see how the Sunny Boy-US is once again raising the bar by offering improved performance, enhanced features, and most importantly, cost savings across the entire spectrum of residential installation processes.

Simple, Flexible Design - SUNNY BOY 5.0-US / 6.0-US

Reduce your costs across all residential PV business operations

Simple, Flexible Design

Speed the completion of customer proposals and maximize the efficiency of your design team with the Sunny Boy-US series, which provides a new level of flexibility in system design by offering:

  • Hundreds of stringing configurations
  • Multiple independent MPPTs
  • SMA’s proprietary OptiTrac™ Global Peak shade mitigation technology
  • Diverse application options including on- and off-grid compatibility

Download the Quick Design Reference Tool that provides string design and inverter selection recommendations in a simple easy-to-use format.
Quick Design Reference Tool

Improved Stocking & Ordering - SUNNY BOY 5.0-US / 6.0-US

Improved Stocking & Ordering

Ensure that your back office business operations run smoothly and succinctly while mitigating potential errors. The Sunny Boy-US line can help achieve cost savings in these areas by providing:

  • An integrated DC disconnect that simplifies equipment stocking and allows for a single inverter part number
  • Accurate order processing by eliminating the potential errors associated with incompatible disconnects provided to your installation team

Value Driven Sales Enablement

SMA wants to help drive down the cost of customer acquisition and improved margins by arming installers with an abundance of feature/benefit sales support. Close more deals with the Sunny Boy-US by utilizing:

  • Secure Power Supply, now with 2,000 W of opportunity power in the event of a grid outage, as an increased value-add or upsell opportunity
  • SMA’s 30 year history and status as the #1 global inverter manufacturer instills homeowners with peace of mind and the long-term security they demand from a PV investment
  • An economical solution for shade mitigation and the challenges of complex roofs
  • Complete grid-management capabilities, ensuring a utility-compliant solution for customers operating in any market
Value Driven Sales Support - SUNNY BOY 5.0-US / 6.0-US
Streamlined Installation & Commissioning - SUNNY BOY 5.0-US / 6.0-US

Streamlined Installation & Commissioning

Expedite your operations in the field by taking advantage of the new Sunny Boy’s installer-friendly feature set including:

  • Direct access via smartphone and utilization of SMA’s Installation Assistant, which minimizes time/labor spent in the field and speeds the path to commissioning
  • Improved communication capabilities that remove the need to install additional equipment
  • Integrated DC disconnect that simplifies onsite logistics and eliminates the need to install a separate disconnect unit, speeding overall installation time
Superior Service - SUNNY BOY 5.0-US / 6.0-US

Superior Service

SMA understands the factors that contribute to lifetime PV ownership cost, that’s why the Sunny Boy-US was designed for maximum reliability and backstopped by an unmatched service offering. Benefit from:


  • Enhanced AFCI technology that improves resistance against false tripping while improving sensitivity in detecting real arcs, which greatly reduces unneeded service calls and increases safety
  • The new Sunny Boy’s two-part enclosure concept that separates the connection unit from the power unit, which allows for simple, expedited servicing
  • The #1 Service team in the PV industry, as recognized by IMS research, with experience servicing an installed base of more than 40 GW


Watch Tech Tip: Installing the Sunny Boy 3.0-US / 3.8-US / 5.0-US / 6.0-US / 7.0-US / 7.7-US
Watch Tech Tip: Commissioning the Sunny Boy 3.0-US / 3.8-US / 5.0-US / 6.0-US / 7.0-US / 7.7-US
Watch Tech Tip: Sunny Boy 3.0-US / 3.8-US / 5.0-US / 6.0-US / 7.0-US / 7.7-US Secure Power Supply
Watch Tech Tip: (Spanish Version) Sunny Boy 3.0-US / 3.8-US / 5.0-US / 6.0-US / 7.0-US / 7.7-US


Modbus Protocol Interface

With the Modbus protocol interface, SMA makes flexible integration of inverters possible. Through the use of this well-known industry standard, you can integrate SMA inverters into your systems without having to follow the SMA-specific inverter protocol.




The SMA Rapid Shutdown System is the most cost-effective way to achieve 2014 NEC 690.12 Rapid Shutdown compliance for systems using Sunny Boy inverters.


External WLAN Antenna

External WLAN Antenna

For systems needing additional WLAN range or increased signal strength in cases of inverters located inside buildings or experiencing radio signal interference.

Sensor Module

Sensor Module

The Sensor Module is a multi-function interface for one SMA inverter featuring two temperature inputs, one analog input for voltage or current with a supply voltage for the a signal source and one SO interface.

User Manual - SUNNY BOY 3.0-US / 3.8-US / 5.0-US / 6.0-US / 7.0-US / 7.7-US

  • Type: User Manual
  • Language: International
  • Number: SB30-77-1SP-US-40-BA-en-11
  • Version: 1.1

Installation Manual - ANTENNA EXTENSION KIT

  • Type: Installation Guide
  • Language: International
  • Number: EXTANT-US-40-IA-en-12
  • Version: 1.2

Installation Manual - SMA SENSOR MODULE (MD.SEN-US-40)

  • Type: Installation Guide
  • Language: International
  • Number: MDSEN-US-40-IA-en-11
  • Version: 1.1

Efficiency and Derating - SUNNY BOY US/SUNNY TRIPOWER US - Technical Information

  • Type: Technical information
  • Language: English (US)
  • Number: WKG-Derating-US-TI-en-16
  • Version: 1.6

Technical Information - SMA SENSOR MODULE (MD.SEN-US-40) - List of Compatible Products

  • Type: Technical information
  • Language: English (US)
  • Number: MDSEN-US-40-TI-en-11
  • Version: 1.1

Technische Information - Modbus®-Schnittstelle // Technical Information - Modbus® Interface

  • Type: Technical information
  • Language: International
  • Number: SMA_Modbus-de-en_V16
  • Version: 1.6

Technische Information - SunSpec®-Modbus®-Schnittstelle // Technical Information - SunSpec® Modbus® Interface

  • Type: Technical information
  • Language: International
  • Number: SunSpec_Modbus-de-en_V16
  • Version: 1.6


  • Type: Warranty
  • Language: English (US)
  • Number: SERVICEREBATE-FUS143525
  • Version: 2.5


  • Type: Warranty
  • Language: English (US)
  • Number: US_SO_107-0080-001r10
  • Version: 10

Manufacturer's Declaration - Static MPPT Efficiency of 99.8% with OptiTrac

  • Type: Manufacturers Declaration
  • Language: International
  • Number: ZE-HK-MPPT-SB-STP-SC-en-13
  • Version: 1.3


  • Type: Forms
  • Language: English (US)
  • Number: GRIDGUARD-en-us-30
  • Version: 3.0