The SUN2000-3-6K-LB0 covers a power range from 3 to 6 kW, making it suitable for a wide variety of system sizes. Whether in a new or existing installation, the inverter integrates reliably into any system environment.
Huawei SUN2000-3-6K-LB0 Inverter
Single-phase PV inverter for residential buildings
The Huawei SUN2000-3-6K-LB0 reliably converts the electricity from your solar power system into usable household electricity. With an efficiency of up to 97.8%, nearly all of the solar power generated is made available—with virtually no losses. It integrates seamlessly with battery storage systems, wall boxes, and heat pumps in the Huawei FusionSolar system, turning your home into a smart energy hub.
Key Product Information at a Glance
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Maximum Efficiency
97.8%
Of every 100 watts of PV electricity, less than 2.2 watts are lost
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European Efficiency Rating
97.2%
This is how efficiently the device operates under typical everyday conditions in Germany, with fluctuating sunlight levels
- Max. Apparent Power 6.6 kVA
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Rated Power
6.6 kW
This is how much electricity the inverter can supply to the home's electrical system at one time
- Max. Input Voltage 600 V
- MPPT Operating Voltage Range 40–560 V
- Max. Input Current per MPPT 16 A
- Max. Input Current per Input
- Max. Short-Circuit Current 20 A
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Number of MPP trackers
2
Two separate entrances allow for optimal use of module areas with different orientations or shading conditions
- Max. Number of Inputs per MPPT 1
- Protection Class IP66
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Cooling
Convective Air Cooling
The device operates without a fan, so it is completely silent
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Communication
RS485, Wi-Fi via the inverter's built-in Wi-Fi module; Ethernet via the Smart Dongle-Wi-Fi FE (optional); 4G/3G/2G via the Smart Dongle-4G (optional); SmartAssistant
The system can be easily connected to your home network and the FusionSolar app
- Weight < 15 kg
Features and Benefits of the SUN2000-3-6K-LB0
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Plug-and-Play battery connection for Huawei LUNA2000 energy storage systems, featuring simplified installation and preconfigured integration
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Integrated arc fault detection (AFCI) automatically detects sparks in solar cables, thereby increasing fire safety
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Two independent MPP trackers for optimized energy yield, even with complex roof geometries or partial shading
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Multiple communication interfaces via Wi-Fi, Ethernet, and RS-485 (and 4G via a Smart Dongle, if optional) for flexible network connectivity
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FusionSolar App Integration with Real-Time Monitoring and Remote Diagnostics for Installers
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Wide international grid compatibility through support for numerous grid connection standards, including VDE-AR-N-4105, G98, G99, and CEI 0-21
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Silent operation thanks to fanless convection cooling with no moving parts
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Compatible with Huawei SmartAssistant for precise energy management and optimization of self-consumption
Huawei SUN2000-3-6K-LB0 Product Highlights at a Glance
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Maximum efficiency of 97.8% for highly efficient conversion of PV electricity
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Automatic arc detection and module protection for maximum operational and fire safety
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Two independent MPP trackers for optimal utilization of module arrays with different orientations
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Seamless integration into the Huawei FusionSolar ecosystem, including storage, a wallbox, and a heat pump
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Silent operation thanks to fanless convection cooling
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Flexible communication via Wi-Fi, Ethernet (optional), SmartAssistant, RS485 (also 4G via Smart Dongle, optional)
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IP66 protection rating for reliable operation in demanding environmental conditions
Easy to install. Appreciated every day
One inverter. Many possibilities.
Versatile
Easy Installation
Thanks to its compact dimensions and a weight of just 11 kg, the inverter can be installed quickly and easily. The well-organized wiring and intuitive commissioning save valuable time on the job site.
Future-proof & expandable
The SUN2000-3-6K-LB0 is fully compatible with Huawei storage solutions and can be expanded at any time with a LUNA2000 home storage system. This allows the system to scale flexibly to meet the needs of its operators.
Additional Technical Specifications
Input (PV / DC)
- Recommended Maximum PV Capacity 9,000 Wp
- Max. Input Voltage 600 V
- Full-Load MPPT Range
- Starting voltage 50 V
- Rated Input Voltage 360 V
- Max. Short-Circuit Current 20 A
- Number of MPP trackers 2
- Max. Number of Inputs per MPPT 1
Input (DC battery)
- Max. Operating Current 20 A
- Max. Charging Power 6,000 W
- Max. discharge power 6,600 W
Output (On-Grid / AC)
- Rated Power 6.6 kW
- Max. Apparent Power 6.6 kVA
- Power Connection Single-phase
- Rated Output Voltage 220 / 230 / 240 V AC
- Rated Frequency 50 Hz / 60 Hz
- Max. Output Power
- Adjustable Power Factor 0.8 capacitive. ... 0.8 inductive
- Total Harmonic Distortion (THD) –
- Backup Yes (via Huawei SmartGuard-63A-T0)
Mechanics, Environment, and Warranty
- Protection Class IP66
- Compatible Storage Huawei LUNA2000 Series
- Operating temperature range -25°C ~ 60°C (Derating above 45°C at rated AC power)
- Surge Protection
- Noise Level
- Max. Operating Height 4,000 m (derating above 2,000 m)
- Warranty 10 years
Frequently Asked Questions About the Huawei SUN2000-3-6K-LB0
What is the rated power of the SUN2000-3-6K-LB0?
What is the rated power of the SUN2000-3-6K-LB0?
The SUN2000-3-6K-LB0 delivers a rated output power of 6,600 W at a maximum apparent power of 6,600 VA. The recommended maximum PV generator power is 9,000 Wp.
Which storage systems are compatible with the SUN2000-3-6K-LB0?
Which storage systems are compatible with the SUN2000-3-6K-LB0?
The inverter is designed for the Huawei LUNA2000 battery storage series. Compatible models include the LUNA2000-5/10/15-S0 and LUNA2000-5/7/10/12/14/15/17/19/21-S1. Connection is made via a direct DC connection using Plug & Play, which significantly simplifies installation.
What is the efficiency of the SUN2000-3-6K-LB0?
What is the efficiency of the SUN2000-3-6K-LB0?
The maximum efficiency is 97.8%. The European efficiency rating, which reflects actual operating conditions in Central Europe, is 97.2%. This makes the unit one of the most efficient inverters in its class for Residential use.
Is the SUN2000-3-6K-LB0 suitable for outdoor use?
Is the SUN2000-3-6K-LB0 suitable for outdoor use?
Yes, the SUN2000-3-6K-LB0 is designed for wall mounting both indoors and outdoors. The fanless convection cooling system ensures quiet operation while minimizing the number of components prone to wear and tear. With an IP66 protection rating, the device is reliably protected against dust and heavy exposure to water.
Can the inverter be monitored and controlled via an app?
Can the inverter be monitored and controlled via an app?
Yes. Through the free FusionSolar app, system owners have access at any time to real-time data on generation, consumption, and storage levels. Installers can also perform remote diagnostics and adjust settings remotely. The app is available for iOS and Android.
For which markets is the SUN2000-3-6K-LB0 approved?
For which markets is the SUN2000-3-6K-LB0 approved?
The device supports a wide range of international power connection standards, including VDE-AR-N-4105 for Germany, G98, G99, and G100 for the United Kingdom, EN 50549-1 for Europe, as well as CEI 0-21 for Italy and AS 4777.2 for Australia. It is therefore suitable for use in numerous European and other international markets.
As an installer or wholesaler, where can I purchase the SUN2000-3-6K-LB0?
As an installer or wholesaler, where can I purchase the SUN2000-3-6K-LB0?
The SUN2000-3-6K-LB0 is distributed through WATTKRAFT’s network of authorized distribution partners. Registered partners have direct access to current prices, availability, and technical documentation via the partner portal. We welcome inquiries from new partners via our contact form.
Data Sheet
Data Sheet
Quick Start Guide
Quick Start Guide
Manual
Manual
Warranty
Warranty