Fronius Primo GEN24 4.0 Plus vs SolaX X3-MIC-4K-G2
AC power: Fronius Primo GEN24 4.0 Plus 4 kW, SolaX X3-MIC-4K-G2 4 kW. The SolaX X3-MIC-4K-G2 is better on 5 of 10 comparable points.
Who wins where
- Fronius Primo GEN24 4.0 Plus
- SolaX X3-MIC-4K-G2
Biggest differences
| Fact | Primo GEN24 4.0 Plus | X3-MIC-4K-G2 |
|---|---|---|
| MPPT voltage max. | 530 V | 980 V |
| MPPT voltage min. | 210 V | 120 V |
| Max. input current per MPPT | 22 A | 16 A |
| Max. PV array power | 6 kWp | 8 kWp |
Score per area = position (0–100) relative to all 238 models in this category; higher is better.
| Technical specifications | FroniusPrimo GEN24 4.0 Plus | SolaXX3-MIC-4K-G2 |
|---|---|---|
| Performance | ||
| AC power | 4 kW 1 | 4 kW 2 |
| Max. PV array power | 6 kWp 1 | 8 kWp ✓ 3 |
| MPP trackers | 2 1 | 2 3 |
| Efficiency | ||
| Max. efficiency | 97.6 % 1 | 98.3 % ✓ 3 |
| European efficiency | 97.1 % 1 | 97.8 % ✓ 3 |
| Noise | ||
| Noise | 42 dB(A) 1 | – |
| Electrical | ||
| MPPT voltage min. | 210 V 1 | 120 V ✓ 3 |
| MPPT voltage max. | 530 V 1 | 980 V ✓ 3 |
| Max. input current per MPPT | 22 A ✓ 1 | 16 A 3 |
| Phases | 1 1 | 3 2 |
| Connectivity & smart | ||
| Hybrid (battery-ready) | Yes ✓ 1 | No 2 |
| Backup power | Yes 1 | – |
| Wi-Fi / monitoring | Yes 1 | – |
| Dimensions & weight | ||
| IP rating | IP66 1 | IP66 3 |
| Width | 474 mm 1 | 342 mm 3 |
| Height | 530 mm 1 | 434 mm 3 |
| Depth | 165 mm 1 | 144.5 mm 3 |
| Weight | 15.4 kg ✓ 1 | 15.5 kg 3 |
Sources
- Fronius Primo GEN24 & GEN24 Plus 3.0 - 6.0 kW – datasheet, EN V04 (June 2025) — Fronius International GmbH · accessed 27 Sept 2026
- ENA Type Test Register (inverters) — Energy Networks Association (ENA) · accessed 27 Sept 2026
- X3-MIC G2, V3.1 — SolaX Power · accessed 29 Sept 2026