FOX ESS AC3-Pro
The FOX ESS AC3-Pro is a hybrid inverter range from FOX ESS with 9 models. Rated AC output 10 kW – 30 kW. Listed and verified: VDE-AR-N 4105. Sold in Germany.
Specifications
- Rated AC output
- 10 kW – 30 kW
- Models in this range
- 9
What the FOX ESS AC3-Pro does
A hybrid inverter runs both the solar array and a home battery: it supplies the home from the panels first, stores the surplus and draws on the battery when the sun goes down. The FOX ESS AC3-Pro range spans 10 kW to 30 kW of AC output, suiting arrays of about 10–13 kWp at the small end and 30–39 kWp at the large end, as installers commonly size the panels up to 30% above the inverter's rating.
In Germany, arrays of the same size produce about 9,000 to 27,000 kWh a year, assuming a conservative 900 kWh per kWp. For the smallest model, that is worth €693 a year fed into the grid at 7.70 ct per kWh, and up to €3,330 used at home instead of buying power at 37.0 ct.
Estimates. Electricity prices: BDEW Strompreisanalyse, autumn 2026; Bundesnetzagentur, EEG feed-in tariffs from 1 August 2026.
Product details
- Product type
- Hybrid inverter
- Brand
- FOX ESS
- Category
- Home Solar & Hybrid Inverters
- Sold in
- Germany
- Listed in
- ZEREZ (FGW, Germany)
Models (9)
| Model | AC output |
|---|---|
| AC3-Pro-10.0 | 10 kW |
| AC3-Pro-12.0 | 12 kW |
| AC3-Pro-15.0 | 15 kW |
| AC3-Pro-20.0 | 20 kW |
| AC3-Pro-22.0 | 22 kW |
| AC3-Pro-24.9 | 24.9 kW |
| AC3-Pro-25.0 | 25 kW |
| AC3-Pro-29.9 | 29.9 kW |
| AC3-Pro-30.0 | 30 kW |
Certifications
| Certification | Market | Status | Reference | Valid until |
|---|---|---|---|---|
| VDE-AR-N 4105 | Germany | ✓ Verified 20 October 2026 | 23-500-01 |