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FoxESS T20-G3 String Inverter 20 kW Three-phase 2 MPPT
The FoxESS T20-G3 is a three-phase string inverter rated 20 kW from the third-generation T series, for residential and commercial grid-connected PV. It accepts up to 30000 Wp of array across 2 MPP trackers, with one or two strings per tracker.
Declared peak efficiency is 98.6% and MPP tracking starts at 140 V: generation begins early in the morning and carries on late. The DC switch is built in, so no separate external box is required, and AC surge capacity is high.
The enclosure is IP65 with natural cooling, so the inverter can be installed outdoors and has no fans to replace. Monitoring runs from the FoxCloud app or the web portal, with RS485 and a logging dongle. Warranty is 5 years, extendable to 10 by registering the product online.
At a glance
Technical data
| Feature | Value |
|---|---|
| Manufacturer | FoxESS |
| Model | T20-G3 |
| Rated AC power | 20 kW |
| Max PV array power | 30000 Wp |
| Grid connection | 3/N/PE 230/400 V - 50/60 Hz |
| MPP trackers | 2 |
| Strings per MPPT | 1 - 2 |
| MPPT voltage range | 140 - 1000 V |
| Start-up voltage | 140 V |
| Max efficiency | 98,6 % |
| MPPT efficiency | ~99 % |
| DC switch | Integrated |
| Cooling | Natural, fanless |
| Communication | FoxCloud app and web portal, RS485, Wi-Fi/LAN dongle |
| Enclosure rating | IP65 |
| Manufacturer warranty | 5 years, 10 with registration |
Installation and commissioning must be carried out by qualified personnel, in line with local regulations and the manufacturer instructions.