On-Grid
Sungrow undefined SG4400UD-20

Sungrow • SG4400UD-20

SG4400UD-20

Region:China
Region shows where the seller or factory is located. Most ship globally, and all listed suppliers should be able to ship to your current location.
0kW
Nominal AC Power
99%
Max Efficiency
2900 x 2300
Dimensions (mm)
Size Your System Find Installer

Ideal Use Case

The Sungrow SG4400UD-20 is tailored for specific solar energy needs. This inverter is an excellent choice if you:

Have a small residential system (0.0 kW or less)
Use three-phase grid connection
Need 4 independent MPPT trackers for different roof orientations
Want maximum energy harvest (99.0% peak efficiency)
Focus on grid-tied operation without battery storage
Operate in extremely cold climates

Don’t guess your solar setup — calculate it first!

Take our Solar Quiz to get a personalized recommendation for panels, inverter, battery capacity, and system size — before you spend money on the wrong setup.

Run Technical Sizing

AC Output Data

Nominal AC Power0 kW
Max Efficiency99 %
Euro Efficiency98.7 %
Max AC Current4620 A
Rated AC Current0 A
Number of Feed-in Phases3
THD (Total Harmonic Distortion)3 %

DC Input Data

MPP Voltage Range938~1500 V
Max DC Voltage1500 V
Min DC Voltage to Start950 V
Max DC Current5740 A
Number of MPP Trackers4
DC Inputs20

Mechanical & Environmental Data

Dimensions (W x H x D)2900 x 2300 x 1550 mm
Weight3300.0 kg
Protection ClassIP65
Cooling MethodFan
DisplayLED
InterfaceRS 485, Ethernet, WLAN

Operating Conditions

Operating Temperature-35 ~ +60 ℃
Humidity0-100 %
Frequency45-65 Hz
Max Altitude4000 m
Transformer TypeTransformerless
Power Consumption (Night)200 W

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Product FAQ

What size solar array can the Sungrow SG4400UD-20 handle?

The Sungrow SG4400UD-20 has a nominal AC output of 0kW with a maximum efficiency of 99%. It is typically paired with a solar array of 0–0kW DC for optimal energy harvest.

Is the Sungrow SG4400UD-20 a hybrid inverter?

The Sungrow SG4400UD-20 is a on-grid inverter. To add battery storage, you would need a separate AC-coupled battery inverter or upgrade to a hybrid model.

Does the Sungrow SG4400UD-20 have WiFi monitoring?

Most Sungrow inverters come with or support optional WiFi/Ethernet dongles. This allows you to track your solar production and battery status via a mobile app or web portal in real-time.

How many MPPT trackers does the Sungrow SG4400UD-20 have?

This inverter features 4 independent MPPT trackers with a maximum DC input voltage of 1500V. Multiple trackers allow panels on different roof faces or orientations to operate independently for maximum yield.

Is the Sungrow SG4400UD-20 a three-phase inverter?

Yes, this is a three-phase inverter. Three-phase inverters are ideal for larger homes, commercial systems, or regions with three-phase grid connections.