Huawei Inverter - 4kW - SUN2000-4KTL-M1 #

Huawei's SUN2000-4KTL-M1 redefines residential solar conversion with a transformerless design that achieves up to 98.4% maximum efficiency, ensuring every watt from your rooftop is utilised. Unlike bulkier alternatives, its natural convection cooling eliminates fan noise, keeping the unit whisper-quiet at under 29 dB. Dual MPPTs with a wide 90–560 V operating range adapt seamlessly to partial shading or complex roof layouts, while the integrated DC disconnect switch simplifies installation and maintenance.

Highlights

• 4 kW rated AC output with 4.4 kVA maximum apparent power for demanding household loads
• Two independent MPPT channels maximise energy harvest from varied string orientations
• IP65-rated enclosure withstands dust, rain, and temperature extremes from -25°C to +60°C
• Integrated WLAN and RS485 communication; optional Ethernet via Smart Dongle for flexible monitoring
• Compatible with Huawei LUNA2000 and select LG Chem RESU batteries for future storage expansion

In daily use

Once installed, the SUN2000-4KTL-M1 operates autonomously, prioritising self-consumption and feeding surplus power to the grid. Its single-phase output (220/230/240 V, 50/60 Hz) matches standard European residential connections. The inverter's natural convection cooling means no moving parts to wear out, reducing long-term maintenance. Real-time performance data is accessible via the FusionSolar app through the built-in WLAN, allowing you to track generation, consumption, and system health from anywhere. The integrated DC switch provides a safe isolation point during servicing, while Type II surge protection on both DC and AC sides guards against transient voltage spikes.

Full specifications

• Rated AC output power: 4 kW
• Max. AC apparent power: 4.4 kVA
• Max. DC input voltage: 600 V
• MPPT operating voltage range: 90 V – 560 V
• Max. input current per MPPT: 12.5 A
• Number of MPPTs: 2
• Nominal AC voltage: 220 V / 230 V / 240 V (single-phase)
• Nominal AC frequency: 50 Hz / 60 Hz
• Max. efficiency: 98.4%
• European efficiency: 97.5%
• Protection degree: IP65
• Operating temperature range: -25°C to +60°C
• Cooling method: Natural convection
• Noise emission: <29 dB
• Communication: RS485, WLAN (integrated), Ethernet (optional via Smart Dongle)
• DC disconnector: Integrated
• Surge protection: DC Type II / AC Type II
• Topology: Transformerless
• Battery compatibility: Huawei LUNA2000, LG Chem RESU (specific models)

Final note

The SUN2000-4KTL-M1 combines high efficiency, robust protection, and smart connectivity in a compact, silent package — an ideal centrepiece for modern residential solar systems.