# Deye SUN3 6 5 6KG04AU 3 66KW Single Phase 2 MPPT

Type: solar inverter
Manufacturer: Deye
URL: https://inverterdata.com/en/deye/deye-sun3-6-5-6kg04au-3-66kw-single-phase-2-mppt/
Manufacturer source: https://www.deyeinverter.com/product/single-phase-string-inverter/SUN3-6-5-6KG04AU-3-66kW-Single-Phase-2-MPPT.html
Database: InverterData (inverterdata.com)
License: free to quote with attribution to inverterdata.com

## Overview

Engineered for residential solar installations, this compact single-phase inverter delivers impressive 97.7% maximum efficiency while maintaining 97.2% European efficiency standards. Its dual MPPT technology optimizes energy harvest from two independent solar string configurations, handling up to 18A and 26A input currents respectively across a wide 70-500V voltage range.

Built to withstand challenging environmental conditions, the unit features robust IP65 weatherproof protection and operates reliably across temperatures from -25°C to +60°C. Weighing just 12.1kg, this non-isolated inverter produces clean AC power at 220/230V with minimal 3% total harmonic distortion. The versatile 50/60Hz output frequency compatibility makes it suitable for various grid standards, while the maximum 550V DC input voltage provides excellent safety margins for system design flexibility.

## Specifications

| Specification | Value |
| --- | --- |
| Maximum Efficiency | 97.7 % |
| European Efficiency | 97.2 % |
| MPPT Voltage Range | 70-500 V |
| Maximum DC Input Voltage | 550 V |
| Number of MPPT Channels | 2 |
| Maximum DC Input Current per MPPT | 18+26 A |
| AC Output Voltage | 220/230 V |
| AC Output Frequency | 50/60 Hz |
| Total Harmonic Distortion (THD) | 3 % |
| Weight | 12.1 kg |
| Enclosure Protection Rating | IP65 |
| Operating Temperature Range | -25 to +60 °C |
| Inverter Type | Non-Isolated |
| Number of Phases | 1 |

Not published by the manufacturer: Nominal AC Power, Maximum AC Power, Output Wave Type.

## Frequently asked questions

### Are the two MPPT inputs of the Deye SUN3.6-5.6KG04AU interchangeable?

No. The maximum DC input current of the Deye SUN3.6-5.6KG04AU is recorded as 18+26 A, meaning one tracker takes 18 A and the other 26 A. The bigger roof plane, or a parallel pair of strings, belongs on the 26 A channel; putting it on the 18 A one would clip current on bright days.

### What does the AU in the Deye SUN3.6-5.6KG04AU name mean for grid connection?

The AU marks an Australian-market version. The grid data recorded for the Deye SUN3.6-5.6KG04AU is one phase with an AC output of 220/230 V at 50 or 60 Hz; those pairs are the alternative configurations the unit supports, so it wires into an ordinary single-phase domestic supply rather than a three-phase one.

### How much output does a Deye SUN3.6-5.6KG04AU give?

That depends on the variant: the Deye SUN3.6-5.6KG04AU designation spans ratings from 3.6 kW to 6 kW rather than naming one inverter, and no AC power value is recorded for this entry. The data that is stored, such as the two trackers and the 550 V DC ceiling, is shared across the range.

### Where does the Deye SUN3.6-5.6KG04AU stand on efficiency?

The Deye SUN3.6-5.6KG04AU records 97.7 percent maximum efficiency and 97.2 percent European efficiency, the weighted value that matters for annual yield because part load dominates a domestic profile. Under three percent of the array's DC energy is lost in conversion, and total harmonic distortion is quoted at 3 percent.

### What DC voltage limits apply when designing for the Deye SUN3.6-5.6KG04AU?

The Deye SUN3.6-5.6KG04AU accepts 550 V of maximum DC input voltage and tracks between 70 V and 500 V. A string checked at the lowest expected temperature has to remain below 550 V, while staying above 70 V in heat is easy, so module count per string is the figure the 550 V limit really constrains.

### Is the Deye SUN3.6-5.6KG04AU awkward to hang on a wall?

At 12.1 kg the Deye SUN3.6-5.6KG04AU is heavier than several single-phase units of comparable rating, so a second pair of hands helps when lifting it onto the bracket. It is rated IP65 and declared from -25 to +60 degrees Celsius, which allows a sheltered outdoor wall, and its topology is non-isolated.

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