The SUN2000-2-6KTL-L1 is available in seven power levels and can be precisely tailored to the module area and energy consumption. One platform, many variants.
No longer available
Huawei SUN2000-2-6KTL-L1 Inverter
Single-Phase Smart Energy Controller for Residential Buildings
The SUN2000-2-6KTL-L1 combines AI-powered yield optimization, integrated arc protection, and seamless storage integration in a compact unit. As part of Huawei’s FusionSolar One-Fits-All solutions, it integrates seamlessly into a coordinated ecosystem of inverters, storage, and smart energy management. A well-designed end-to-end system that is as easy to install as it is reliable in the long term.
Key Product Information at a Glance
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Maximum Efficiency
98.4%
Almost no solar power is lost
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European Efficiency Rating
up to 97.8%
This is how efficiently the device operates under typical German everyday conditions with fluctuating sunlight levels
- Max. Apparent Power Up to 6 kVA
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Rated Power
2 - 6 kW
Suitable for small to medium-sized rooftop systems
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Max. Input Voltage
600 V
Suitable for long module strings with high string voltage.
- MPPT Operating Voltage Range 90–560 V
- Max. Input Current per MPPT 12.5 A
- Max. Input Current per Input
- Max. Short-Circuit Current 18 A
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Number of MPP trackers
2
Also ideal for roof surfaces with varying orientations or that are partially shaded
- Max. Number of Inputs per MPPT 1
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Protection Class
IP65
Suitable for outdoor installation and humid environments
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Cooling
Convection cooling
Intelligent air-cooling design for efficient and quiet operation.
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Communication
RS485, USB, Wi-Fi (via Smart Dongle)
Multiple transmission paths allow for flexible integration into professional monitoring systems.
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Weight
12 kg
A compact design that allows for individual installation without additional lifting equipment.
How to Optimize the SUN2000-2-6KTL-L1
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Huawei LUNA2000 Battery Storage – Store solar power and use it in the evening or at night; scalable from 5 to 21 kWh
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Extended Warranty – Manufacturer’s warranty can be extended for up to 20 years
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Wall Mount & Installation Kit – Coordinated mounting accessories for a clean and quick installation
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Smart Dongle Wi-Fi – Connect your system wirelessly to the FusionSolar app and monitor it at any time
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Smart 4G Dongle – for locations without Internet access via cable or Wi-Fi
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Smart Power Sensor DTSU666-H – measures in real time how much electricity you’re using and how much is flowing into the grid
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DC Surge Protector (SPD) Type II – protects the system from lightning strikes and power surges
An Overview of the Key Benefits
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98.4% maximum efficiency for high solar output and a quick return on investment
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Intelligent fire protection (AFCI) automatically detects dangerous arcing and shuts down the system before any damage occurs
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Optimal yields despite partial shading: Two independent trackers ensure that shadows on individual modules have virtually no impact on overall yield
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Integrated battery connection for easy expansion with Huawei LUNA2000 storage units, without additional hardware
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Full control via app: Monitor and control your system at any time, and integrate it into a smart energy management system
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Rugged and weather-resistant: IP65 rating and over 1,400 stress tests for long-term, reliable operation
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Up to a 20-year warranty: Standard 10-year warranty, optionally extendable to 20 years
One inverter. Many possibilities.
Flexibly scalable—from 2 to 6 kW
Future-Proof Thanks to System Compatibility
The inverter communicates with LUNA2000 storage systems, smart meters, SmartAssistant, and wallboxes, and is centrally controlled via FusionSolar. If you invest today, you won’t have to start from scratch tomorrow.
Reliability Through Tested Quality
This compact enclosure incorporates more than 1,400 stress tests and decades of experience in power electronics. The standard 10-year warranty protects your investment over the long term.
Additional Technical Specifications
Input (PV / DC)
- Max. Input Voltage 600 V
- Full-Load MPPT Range 90–560 V
- Starting voltage 100 V
- Rated Input Voltage 360 V
- Max. Short-Circuit Current 18 A
- Number of MPP trackers 2
- MPPT Operating Voltage Range 90–560 V
Input (DC Battery)
- Max. Operating Current 15 A
- Max. Charging Power 5,000 W
- Max. discharge power 5,000 W
Output (On-Grid / AC)
- Rated Power 2 - 6 kW
- Max. Apparent Power Up to 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 lead … 0.8 lag
- Total Harmonic Distortion (THD) ≤ 3%
- Backup Yes (via Huawei SmartGuard-63A-T0)
Mechanics, Environment, and Warranty
- Protection Class IP65
- Compatible Storage Huawei LUNA2000 S0 and S1
- Operating temperature range –25 °C to +60 °C
- Surge Protection DC Surge Protective Device (SPD), Type II
- Noise Level < 40 dB(A)
- Max. Operating Height 4,000 m (derating above 2,000 m)
- Warranty 10 years
Frequently Asked Questions About the Huawei SUN2000-2-6KTL-L1
Can the SUN2000-2-6KTL-L1 be operated either grid-connected or off-grid?
Can the SUN2000-2-6KTL-L1 be operated either grid-connected or off-grid?
The SUN2000-2-6KTL-L1 is a grid-tied inverter that can also be operated completely off-grid thanks to its integrated off-grid mode. When combined with the Huawei LUNA2000 battery storage system and a Smart Guard Backup Box, it also offers an emergency power function that can continue to supply power to selected loads in the event of a grid outage. However, fully Off-Grid operation is not possible with this model.
Which battery is compatible with the SUN2000-2-6KTL-L1?
Which battery is compatible with the SUN2000-2-6KTL-L1?
The inverter is designed for direct integration with the Huawei LUNA2000 S0 and S1. It features a modular design and can be expanded in 5 kWh increments.
How many modules can I run on the SUN2000-2-6KTL-L1?
How many modules can I run on the SUN2000-2-6KTL-L1?
With two independent MPPT trackers, two separate string of modules can be connected. The maximum PV power for the 6-kW model is 9,000 Wp. Your professional installation contractor will size the string to match the roof area, orientation, and shading conditions.
Can I install the inverter myself?
Can I install the inverter myself?
Installation must be performed by a licensed electrician. WATTKRAFT supports your installation company with technical advice and training opportunities.
How does the registration process with the network operator work?
How does the registration process with the network operator work?
The SUN2000-2-6KTL-L1 is certified in accordance with VDE-AR-N 4105, G98/G99, CEI 0-21, and other European standards. The corresponding certificates are filed with the Central Register for Unit and Component Certificates (ZEREZ) and will thus be fully available for the standardized grid connection process in Germany starting in February 2025. Your installation company will typically handle the registration with the responsible grid operator.
Data Sheet
Data Sheet
Manual
Manual
Quick Start Guide
Quick Start Guide
Declaration of Conformity
Declaration of Conformity
Warranty
Warranty