Fox ESS H3-6.0-Smart vs SMA Sunny Boy Smart Energy 6.0
AC power: Fox ESS H3-6.0-Smart 6 kW, SMA Sunny Boy Smart Energy 6.0 6 kW. The SMA Sunny Boy Smart Energy 6.0 is better on 5 of 13 comparable points.
Who wins where
- Fox ESS H3-6.0-Smart
- SMA Sunny Boy Smart Energy 6.0
Biggest differences
| Fact | H3-6.0-Smart | Sunny Boy Smart Energy 6.0 |
|---|---|---|
| MPPT voltage min. | 120 V | 60 V |
| Warranty | 10 years | 5 years |
| MPPT voltage max. | 950 V | 480 V |
| Weight | 34 kg | 17.5 kg |
| Max. input current per MPPT | 20 A | 15 A |
| Noise | 40 dB(A) | 35 dB(A) |
Score per area = position (0–100) relative to all 238 models in this category; higher is better.
| Technical specifications | Fox ESSH3-6.0-Smart | SMASunny Boy Smart Energy 6.0 |
|---|---|---|
| Performance | ||
| AC power | 6 kW 1 | 6 kW 2 |
| Max. PV array power | – | 12 kWp 2 |
| MPP trackers | 3 1 | 3 2 |
| Efficiency | ||
| Max. efficiency | 97.7 % 1 | 98 % ✓ 2 |
| European efficiency | 97.2 % 1 | 97.5 % ✓ 2 |
| Noise | ||
| Noise | 40 dB(A) 1 | 35 dB(A) ✓ 2 |
| Electrical | ||
| MPPT voltage min. | 120 V 1 | 60 V ✓ 2 |
| MPPT voltage max. | 950 V ✓ 1 | 480 V 2 |
| Max. input current per MPPT | 20 A ✓ 1 | 15 A 2 |
| Phases | – | 1 2 |
| Connectivity & smart | ||
| Hybrid (battery-ready) | Yes 1 | Yes 2 |
| Backup power | Yes 1 | Yes 2 |
| Wi-Fi / monitoring | Yes 1 | Yes 2 |
| Dimensions & weight | ||
| IP rating | IP65 1 | IP65 2 |
| Width | 600 mm 1 | 500 mm 2 |
| Height | 450 mm 1 | 586 mm 2 |
| Depth | 226 mm 1 | 236 mm 2 |
| Weight | 34 kg 1 | 17.5 kg ✓ 2 |
| Warranty & lifespan | ||
| Warranty | 10 years ✓ 1 | 5 years 2 |
Sources
- H3 Smart THREE-PHASE HYBRID INVERTER, V1.2 | 2025/07/02 — Fox ESS · accessed 29 Sept 2026
- Sunny Boy Smart Energy 3.6 / 4.0 / 5.0 / 6.0 – datasheet, SBSE36-60-DS-en-18 (status 04/2026) — SMA Solar Technology AG · accessed 27 Sept 2026