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Huawei SUN2000-4.95KTL-NHL2
Huawei

SUN2000-4.95KTL-NHL2

4.95 kW Grid-tie Single-phase
Compare with closest alternative Datasheet PDF
Rated AC (kW)
4.95
Typical for its class
Euro eff. (%)
-
Not published
MPPT
2
Typical · median 2
Max DC (V)
600
Typical · median 600 V
Weight (kg)
11.6
Strong · 3.9 kg below median
Warranty (yrs)
-
Not published

The Huawei SUN2000-KTL-NHL2 series are modern grid-connected inverters, designed for reliable operation in domestic and small commercial installations. The key advantage is the dual MPPT, which allows independent management of two module strings - a significant benefit when dealing with different roof orientations, varied tilts, or partial shading, as each string can operate at its optimal point. In practice, this translates to higher energy yield, especially under challenging conditions.

High European efficiency means the inverter maintains excellent performance even in typical, variable operating conditions in Poland - not just in ideal laboratory settings, but in daily use. Installation monitoring is supported by WLAN and app connectivity, while RS485 communication facilitates integration and service. Additionally, the series offers comprehensive DC and AC safety features, including arc protection (AFCI) and standards-compliant operation for grid-connected systems, enhancing safety and reliability.

Ranking

362 inverters from 3 to 6 kW
Metric This inverter Median Position in class Rank in class
European efficiency - 97.2% Not published -
MPPT trackers 2 2 Typical 13
Max DC input voltage 600 V 600 V Typical 94
Weight per kW 2.3 3.3 Strong · top 22% 77
Warranty - 5 yrs Not published -
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Specifications

Open datasheet PDF
Rated AC power 4.95 kW Continuous output
Max apparent power 5.21 kVA
Phases Single-phase
Nominal AC voltage 202 V
Power factor 0.8 (leading) to 0.8 (lagging)
Harmonic distortion (THD) 5.0 %
Max DC voltage 600 V Caps the string length
MPPT voltage range 90 to 560 V
Start-up voltage 100 V
MPPT trackers 2 2 strings each
Max input current per MPPT 16.0 A Must exceed the panel's Imp
Max short-circuit current per MPPT 30.0 A Must exceed the panel's Isc
Max efficiency 97.5 % Best single operating point
Dimensions 365 × 365 × 156 mm Height × width × depth
Weight 11.6 kg 2.3 kg per kW
Enclosure IP65
Cooling natural
Operating temperature -30 to 60 °C
Max humidity 100 %
Max altitude 4000 m
Interfaces Wi-Fi
Protocols RS485WLANAPP/Web UI via SmartLogger
Protection AFCISurge protection

Pros and cons

5 positive · 1 caution
What owners get
Dual MPPT, 90-560 V Input Range

Two independent MPPT trackers with a 90-560 V input voltage range allow two string arrays on different orientations or tilt angles to operate independently. Under partial shading, each string runs at its own optimum - delivering a measurable yield gain under typical Polish residential installation conditions (multiple roof faces, trees, chimneys).

Arc-Fault Circuit Interruption (AFCI) <0.5 s

The built-in AI-AFCI algorithm detects DC-side arc faults and disconnects the circuit in under 0.5 s - well below what standard rooftop installation safety codes require. Competing inverters in this price class frequently omit this feature entirely or offer it only as a paid add-on.

Passive Cooling + IP65

The fanless design eliminates moving parts subject to wear, reduces noise output to 0 dB(A), and lowers lifecycle service costs. IP65 ingress protection rating permits outdoor installation without additional enclosures.

Global Tier 1 BNEF Q2 2025 Leader

Huawei Digital Power ranks first in the global inverter manufacturer rankings per Wood Mackenzie H1 2025 (score: 93.9/100, ahead of Sungrow at 93.7) and appears on the BNEF Tier 1 list for Q2 2025. Bankability at this level gives financing institutions and investors confidence in the continuity of technical support and service availability for decades.

Dual-Channel Communication: WLAN + RS485

The inverter combines cloud monitoring via the FusionSolar app (WLAN) with an RS485 interface for integration with energy management systems, smart meters, or a BMS. No separate communication gateway is required in a typical prosumer installation.

Trade-offs
Series Designed for the Japanese Market

The NHL2 designation and the sole documented variant of 4.95 kWp - a capacity matched to Japanese low-voltage grid connection limits under Tokyo Electric Power regulations - indicate that this series was engineered to meet JIS/Japanese grid interconnection standards. EU certifications (VDE-AR-N 4105, EN 50549-1) are not confirmed in available documentation, which may restrict legal grid connection and limit distributor availability in Poland.

Alternatives

All Huawei inverters
Inverter Power Euro eff. MPPT Weight Difference
Huawei SUN2000-4.95KTL-NHL2 4.95 kW - 2 11.6 kg You are here
SG5.0RS-ADA 5 kW 96.9% 3 19.0 kg +1 MPPT, 7.4 kg heavier
SolarEdge SE5000H (HD‑Wave, single phase) 5 kW 99.0% - 9.0 kg 2.6 kg lighter
Solis-3P5K-4G 5 kW 97.8% 2 18.0 kg 6.4 kg heavier
S6-GR3P-5K02-NV-ND 5 kW 97.7% 2 14.7 kg 3.1 kg heavier
GW5K-DT 5 kW 97.6% 2 15.0 kg 3.4 kg heavier
MOD 5000TL3-X 5 kW 97.5% 2 12.5 kg Similar on paper
MIN 5000TL-X2 (Pro E) 5 kW 97.5% 1 10.8 kg -1 MPPT

About the SUN2000-KTL-NHL2 series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this model's own.

What is the warranty on the Huawei SUN2000-KTL-NHL2 inverter?
The standard warranty on Huawei SUN2000 series inverters is 10 years, covering manufacturing defects and device malfunctions. Huawei offers the option to extend the warranty to 15 or 20 years through the purchase of an extended service package. This is one of the longest warranties available in the prosumer inverter segment and represents a compelling argument when selecting an inverter for a PV system intended to operate for well over a decade.
Does the Huawei SUN2000-KTL-NHL2 support panel installation on two different roof slopes?
Yes, the SUN2000-KTL-NHL2 series is equipped with dual MPPT, meaning two independent DC inputs. Each string can face a different compass orientation or have a different tilt angle, and the inverter independently tracks the optimal operating point for each one. In practice, this translates to higher energy yield in installations on dual-pitch roofs or where partial shading affects only one roof slope.
What is the peak efficiency of the Huawei SUN2000-KTL-NHL2 inverter, and does it matter under Polish climate conditions?
The peak efficiency of the SUN2000-KTL-NHL2 series is 97.5%. Under Polish climatic conditions, where solar irradiance is variable, the European efficiency - measured against a real-world load profile - is particularly relevant. The series maintains excellent performance at partial load, which means lower conversion losses on overcast days and measurably more energy delivered to the grid or consumed on-site throughout the year.
Does the Huawei SUN2000-KTL-NHL2 inverter operate reliably in winter at sub-zero temperatures?
Yes, the SUN2000-KTL-NHL2 series is designed to operate in temperatures ranging from -30 °C to +60 °C, so Polish winters pose no challenge whatsoever. The inverter uses passive, fanless cooling, which eliminates the risk of mechanical failure in freezing conditions and reduces operational noise. The IP65-rated enclosure provides year-round protection against moisture and dust ingress.
How can I monitor the real-time performance of a PV system equipped with the Huawei SUN2000-KTL-NHL2 inverter?
The SUN2000-KTL-NHL2 features a built-in WLAN module that enables connection to a home Wi-Fi network and real-time system monitoring via the Huawei FusionSolar app on a smartphone. The app displays current power output, historical yield data, and service alerts. For installers and system integrators, RS485 communication is also available, facilitating integration with energy management systems and smart meters.
What is AFCI protection, and does the Huawei SUN2000-KTL-NHL2 series offer it?
AFCI (Arc Fault Circuit Interrupter) is a safety feature that detects hazardous arc faults in the DC circuit, which can be a leading cause of fires in PV installations. The SUN2000-KTL-NHL2 series incorporates AFCI protection on the DC side, significantly enhancing the safety of the entire system. This is especially important in residential buildings where DC wiring runs through occupied spaces or hard-to-access roof cavities.
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