Fronius Primo 4.0-1 vs Huawei SUN2000-4KTL-L1
AC power: Fronius Primo 4.0-1 4 kW, Huawei SUN2000-4KTL-L1 4 kW. The Huawei SUN2000-4KTL-L1 is better on 4 of 10 comparable points.
Who wins where
- Fronius Primo 4.0-1
- Huawei SUN2000-4KTL-L1
Biggest differences
| Fact | Primo 4.0-1 | SUN2000-4KTL-L1 |
|---|---|---|
| Weight | 21.5 kg | 12 kg |
| MPPT voltage max. | 800 V | 560 V |
| MPPT voltage min. | 80 V | 90 V |
| Max. input current per MPPT | 12 A | 12.5 A |
Score per area = position (0–100) relative to all 238 models in this category; higher is better.
| Technical specifications | FroniusPrimo 4.0-1 | HuaweiSUN2000-4KTL-L1 |
|---|---|---|
| Performance | ||
| AC power | 4 kW 1 | 4 kW 1 |
| Max. PV array power | – | 6 kWp 2 |
| MPP trackers | 2 3 | 2 2 |
| Efficiency | ||
| Max. efficiency | 98.1 % 3 | 98.4 % ✓ 2 |
| European efficiency | 97 % 3 | 97.5 % ✓ 2 |
| Electrical | ||
| MPPT voltage min. | 80 V ✓ 3 | 90 V 2 |
| MPPT voltage max. | 800 V ✓ 3 | 560 V 2 |
| Max. input current per MPPT | 12 A 3 | 12.5 A ✓ 2 |
| Phases | 1 1 | 1 1 |
| Connectivity & smart | ||
| Hybrid (battery-ready) | No 1 | No 1 |
| Backup power | – | Yes 2 |
| Wi-Fi / monitoring | Yes 3 | Yes 2 |
| Dimensions & weight | ||
| IP rating | – | IP65 2 |
| Width | 431 mm 3 | 365 mm 2 |
| Height | 645 mm 3 | 375 mm 2 |
| Depth | 204 mm 3 | 156 mm 2 |
| Weight | 21.5 kg 3 | 12 kg ✓ 2 |
Sources
- ENA Type Test Register (inverters) — Energy Networks Association (ENA) · accessed 27 Sept 2026
- SUN2000-2/3/3.68/4/4.6/5/6KTL-L1 – datasheet, 01-202509 — Huawei Digital Power Technologies Co., Ltd. · accessed 27 Sept 2026
- FRONIUS PRIMO, v19 Dec 2022 — Fronius · accessed 2 Oct 2026