More than an inverter.

Sunny Boy 3.0 / 3.6 / 4.0 / 5.0 / 6.0

100% ease and comfort with Sunny Boy 3.0–6.0

Maximum energy yields for private homes

Thanks to its integrated web interface for easy commissioning via a smartphone or tablet and SMA Smart Connected service, this inverter offers true ease and comfort for PV system operators and installers.

Good to know

Fast and targeted service with SMA Smart Connected.

SMA Smart Connected

Quick and easy to install

With its reduced weight, the Sunny Boy can be installed quickly while taking up minimal space. The Sunny Boy can be commissioned quickly via smartphone or tablet thanks to its web interface.

One-person installation due to low weight of 17.5 kg
Compact design through minimum space requirements
Quick installation thanks to external connections
Intuitive commissioning and local monitoring via a smartphone or tablet

Intelligent optimization of energy yield

Established product features and integrated software solutions will provide yield optimization throughout the system’s entire service life. Even in shading. SMA ShadeFix is a proprietary inverter software that optimizes energy yield in nearly every situation. SMA Smart Connected inverter monitoring offers enhanced safety by detecting errors at an early stage and automatically reporting them to the installer.

SMA ShadeFix is an integrated software for yield optimization
Dynamic active power limitation means direct use of excess energy and less power from the grid
Automatic inverter monitoring via SMA Smart Connected
System data visualization via Sunny Portal
Local visualization via Smart Inverter Screen

Flexibly expandable anytime

With the Sunny Boy, PV system operators can ensure that their PV system always generates maximum yields. If greater use of solar power is made in your own home, intelligent energy management and SMA storage solutions can be added at any time to systems with the Sunny Boy.

Effectively prevent electric arcs with SMA ArcFix

SMA ArcFix, the integrated arc-fault circuit interrupter (AFCI) in our inverters, is a highly effective tool for detecting possible electric arcs in the PV system. The inverter stops feed-in operation whenever an electric arc is detected. With the introduction of SMA ArcFix in our inverters, we continue to consistently raise the already high safety standard of PV systems.

SMA Smart Connected

Investment security included

With SMA Smart Connected, SMA offers free and automatic inverter monitoring that helps installers to provide customers with a quick, targeted service. If an inverter fails, SMA proactively informs the PV system owner and the installer. In this way, PV system owners and installers benefit from minimized diagnosis and downtime. If it is necessary to replace the inverter, SMA sends a replacement device fast and free of charge.

SMA Smart Connected

How it works

Activation of SMA Smart Connected

During registration of the system in Sunny Portal, you, as the installer, activate SMA Smart Connected and thus start automatic inverter monitoring by SMA.

Automatic inverter monitoring

SMA automatically checks the inverter for anomalies around-the-clock during operation. You and your customers benefit from SMA's many years of experience.

Proactive communication

After a fault has been diagnosed and analyzed, SMA informs the installer and PV system operator immediately by email. Everyone is thus optimally prepared for the troubleshooting process ensuring minimum downtimes and reducing outlay and costs. The regular power reports also provide the installer with valuable information about the overall system.

Replacement Service

If a replacement device is necessary, SMA automatically supplies a new inverter within one to three days of the fault diagnosis. As the installer, you can contact the PV system operator of your own accord and replace the inverter immediately.

3D View - Home Installation

1 Sunny Boy 3.0 – 6.0
2 SMA Smart Connected - the integrated service package
3 PV system monitoring via Sunny Portal

Wiring Diagram - System Structure

Basic System functions

Easy commissioning via integrated WLAN and Speedwire interface
Maximum transparency thanks to visualization in the Sunny Portal
Safe investment through SMA Smart Connected
Modbus as interface for third-party providers

Expanded System functions

Basic system functions
Reduction in purchased electricity and increase in self-consumption through use of stored solar energy
Maximum energy use thanks to forecast-based charging
Increased self-consumption thanks to intelligent load control
Easy integration of ripple control receivers via SMA Power Limiter

With SMA Energy Meter

Maximum system usage through dynamic limiting of feed-in to the grid between 0% and 100%
Visualization of energy consumption

Sunny Boy 3.0 / 3.6 / 4.0 / 5.0 / 6.0

Release Notes

Version 4.03.06.R (May 2025)

The update file contains all features of the former firmware versions.

New Features and Improvements:

Improved installation assistant in the WebUI by adding a step for configuring the inverter’s software update settings.
Improvement of parameter setting in step „Grid management service“. Settings can be checked with graphic diagrams.
Added function on WebUI to reset the inverter to factory settings (default settings). This function is available on installer level. Resetting will cause all data of the inverter to be deleted. This includes: Device configuration and parameter settings, data and configuration of the local network, event log, power and energy data.
Harmonization of the scaling for I(U) and P(U) characteristic curves which simplifies the visualization while switching between the two modes of the diagnosis function on the WebUI.
Improvement of Cybersecurity features, e.g. due to the encryption of device credentials.

Fixed Issues:

Fixed the occurrence of incorrect peaks in power and energy values on WebUI and Portal.

Version 4.02.02.R (November 2024)

New Country Settings:

Netherlands: [NL] Netcode elektriciteit Typ A
Spain: [ES] TED749:2020 Typ A P ≤ 100 kW
Brazil: [BR] Por.140:2022 & 515:2023 P≤6 kW

Version 4.01.15.R (June 2024)

New features and solved issues:

WPA3 extension for WLAN communication
Selectable P(I) or P(U) curve diagnosis
Swedish and Hungary language selectable for WebUI
Correction of sporadic AFCI events triggered by ShadeFix
Optimization in P(f) control

Version 4.00.75.R (Februar 2023)

New features and solved issues:

Unicast protocol for reliable communication between inverter and meter
Solved communication issue after rebooting the inverter

Version 4.00.55.R (June 2022)

New country settings:
- [AU] AS/NZS 4777.2:2020 Generator Region A
- [AU] AS/NZS 4777.2:2020 Generator Region B
- [AU] AS/NZS 4777.2:2020 Generator Region C
- [AU] AS/NZS 4777.2:2020 Generator Region NZ
New secure login procedure PUK 2.0 (Details described in User Manual)
AFCI function implemented (Details described in Technical Information)
I-V-Curve tracing for detailed string analysis of PV generator
Buzzer audio alarm (AS4777.2_2015) disabled in case of residual current > 30 mA
Adjusted AC power ramping to meet UNE 217001requirements
Improved WLAN startup stability
Bugfixing of:
- „General operating status“: MPP instead of Derating
- „SSID“: Incorrect AP name SMA9xxxxxx fixed
- Unintended operation of internal fan