

Solis S6-EH3P20K-ND-H Hybrid Inverter 20kW Three-Phase High Voltage without Display
The Solis S6-EH3P20K-ND-H is the 20kW three-phase hybrid inverter of the S6 series for high-voltage batteries (120-800V, up to 50A). It has 4 MPPTs of 20A with a 200-850V range and accepts up to 40kW of PV: a fit for large homes, farms and small businesses.
This is the version without display: the same inverter as the screen model, with LED indicators, set up and controlled from the Bluetooth app and SolisCloud. During a blackout it switches to backup in under 10 ms and handles 1.6 times rated power for 10 s; it accepts a generator, runs up to 10 units in parallel and CEI 0-21 compliance is declared by Solis.
Key features
Technical specifications
| Feature | Value |
|---|---|
| Product code | S6-EH3P20K-ND-H |
| Rated AC power | 20kW |
| Max. apparent power | 20kVA |
| Max. recommended PV power | 40kW |
| Max. PV voltage | 1000V |
| Rated / start-up voltage | 600V / 160V |
| MPPT voltage range | 200-850V |
| MPPTs / strings | 4 / 4 |
| Max. input current / short-circuit current | 4 × 20A / 4 × 30A |
| Supported battery | high-voltage lithium, 120-800V range |
| Max. charge/discharge current | 50A |
| Grid connection | three-phase 3/N/PE, 220/380V - 230/400V |
| Rated AC current | 30.4A / 28.9A |
| Backup output | 1.6 times rated power for 10 s, switch-over < 10 ms; current 60.8A / 57.7A |
| Max. / European efficiency | 97.7% / 97.5% |
| Communication and display | CAN, RS485, Ethernet, LEDs, Bluetooth and app; optional Wi-Fi, LAN or cellular |
| Protection rating | IP66 |
| Operating temperature | -25 to +60 °C |
| Dimensions (W × H × D) | 599×546×243 mm |
| Cooling | redundant fan cooling |
| Grid codes | CEI 0-21, CEI 0-16, EN 50549-1, VDE-AR-N 4105, NC RfG tipo B |
Documentation
PDFS6-EH3P(12-20)K-H series datasheetOfficial manufacturer documentInstallation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.


















































