97.5% Efficiency
High energy conversion

4kW single phase string inverter with dual MPPT and 97.5% efficiency.
The Deye SUN-4K-G05P1-EU-AM2 is a powerful single-phase string inverter for larger residential and commercial solar systems. With 4kW power range, 97.5% max efficiency, dual MPPT trackers, 80V low start-up voltage, zero export support, VSG capability, Anti-PID function, and IP65 protection, it delivers optimal performance for medium-sized installations.
| AC Output Overcurrent Protection | Yes |
|---|---|
| AC Output Overvoltage Protection | Yes |
| AC Output Short Circuit Protection | Yes |
| DC Component Monitoring | Yes |
| DC Polarity Reverse Connection Protection | Yes |
| DC Terminal Insulation Impedance Monitoring | Yes |
| Earth Fault Detection | Yes |
| MPPT Voltage Range (V) | 70-500 |
| Max. AC Output Apparent Power (KVA) | 4.4 |
| Max. AC Output Current (A) | 20/19.2 |
| Max. PV Input Power (kW) | 5.2 |
| Max. PV Input Voltage (V) | 550 |
| Rated AC Output Active Power (kW) | 4 |
| Rated AC Output Current (A) | 18.2/17.4 |
| Rated PV Input Voltage (V) | 360 |
| Start-up Voltage (V) | 80 |
| PV Input Voltage Range | 80-550 V |
| Type | String Inverter |
| Rated output voltage | 220/230 |
| No. of Strings MPP Tracker | 1+1 |
| No. of MPP Trackers/ No. of Strings MPP Tracker | 2/1+1 |
| Communication Interface | RS485/RS232 /WiFi/LAN |
| Euro Efficiency | 96.9% |
| Full Load MPPT Voltage Range | 145-500 V |
| Grid Connection Form | L/N/PE |
| Grid Regulation | IEC 61727, IEC 62116, EN 50549, NRS 097, RD 140, UNE 217002, G99 |
| Ground Fault Current Monitoring | Yes |
| Inverter Topology | Non-Isolated |
| Island Protection Monitoring | Yes |
| MPPT Efficiency | >99% |
| MPPT Voltage Range | 70-500 V |
| Max. AC Output Apparent Power | 4.4 kVA |
| Max. AC Output Current | 20/19.2 A |
| Max. Efficiency | 97.3% |
| Max. Input Short Circuit Current | 27+27 A |
| Max. Inverter Backfeed Current To the Array | 0 |
| Max. Operating PV Input Current | 18+18 A |
| Max. Output Fault Current | 34.8 A |
| Max. PV Input Power | 5.2 kW |
| Max. PV Input Voltage | 550 V |
| Monitor Mode | GPRS/WIFI/Bluetooth/4G/LAN (optional) |
| Over Voltage Category | OVC II(DC), OVC III(AC) |
| Overvoltage Load Drop Protection | Yes |
| Power Factor Adjustment Range | 0.8 leading to 0.8 lagging |
| Power Network Monitoring | Yes |
| Rated AC Output Active Power | 4 kW |
| Rated AC Output Current | 18.2/17.4 A |
| Rated Output Grid Frequency/Range | 50/45-55, 60/55-65 Hz |
| Rated Output Voltage/Range | 220/230 0.85Un-1.1Un V |
| Rated PV Input Voltage | 360 V |
| Residual Current (RCD) Detection | Yes |
| Safety EMC/Standard | IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2 |
| Start-up Voltage | 80 V |
| Surge Protection Level | TYPE II(DC), TYPE II(AC) |
| Thermal Protection | Yes |
| Total Current Harmonic Distortion THDi | <3% |
| Rated AC Power | 4 kW |
| Max PV Voltage | 550 V |
| MPPT Trackers | 2 |
| Max Operating Current | 18+18 A |
| Phase | Single-phase |
| Type Of Cooling | Natural cooling |
|---|---|
| Ingress Protection(IP) Rating | IP 65 |
| IP Rating | IP65 |
| Cooling | Natural Cooling |
| Permissible Altitude (m) | 3000m |
|---|---|
| Noise | ≤35 dB |
| Operating Temperature Range | -25 to +60℃, >45℃ Derating °C |
| Permissible Altitude | 3000 m |
| Permissible Ambient Humidity | 0-100% |
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Read: SEC Net-Metering in Saudi Arabia: How to Apply for Rooftop Solar Approval (2026) →Yes. DEYE inverters are rated for high ambient temperatures and dusty conditions common across the Gulf, North Africa and the wider MEA region, with IP-rated enclosures for outdoor installation in shaded areas.
Dual MPPT trackers allow the inverter to independently optimize power from two separate strings of solar panels, maximizing energy output even with different orientations or partial shading.
The optional Anti-PID function helps prevent Potential Induced Degradation of solar panels, maintaining high efficiency over the system's lifespan.