GTB1200 1200 W Grid-Tie Microinverter.
A four-panel unit with four MC4 pairs for four 300 W modules, 1200 W AC output on a 120 V or 230 V grid, 95% peak efficiency and WiFi cloud monitoring.
Four panels, one inverter.
The GTB1200 serves four 300 W modules through four MC4 pairs with a 15 A×2 maximum input current. It shares the 365×230×40 mm chassis and 3.5 kg weight with the GTB1400 and GTB1600.
- 4 MC4 pairs · 15 A×2 maximum input current
- 95% peak efficiency · 99.5% MPPT efficiency
- 4 units per 230 V branch · 2 per 120 V branch
- IP65 · natural convection, no fans
| Rated power | 1200 W |
| MC4 | 4 sets |
| Panels | 4 × 300 W |
| Weight | 3.5 kg |
| Dimensions | 365×230×40 mm |
| Per branch (230 V) | 4 units |
Every figure from the user manual.
Transcribed from the GTB1200 user manual, parameter page. Warranty term is not stated in the manual, so we do not quote one.
| Number of Input MC4 Connector | 4 sets |
|---|---|
| MPPT Voltage Range | 22V–48V |
| Operation Voltage Range | 20V–50V |
| Maximum Input Voltage | 52V |
| Startup Voltage | 22V |
| Maximum Input Power | 1200W |
| Maximum Input Current | 15A×2 |
| Panel configuration | 4×300W (max DC input 1200W) |
| Single-Phase Grid Type | 120V & 230V |
| Rated Output Power | 1200W |
| Maximum Output Power | 1200W |
| Nominal Output Current | @120VAC: 5A / @230VAC: 2.6A |
| Nominal Output Voltage | 120VAC / 230VAC |
| Default Output Voltage Range | @120VAC: 90V–160V / @230VAC: 190V–270V |
| Nominal Output Frequency | 50Hz / 60Hz |
| Default Output Frequency Range | @50Hz: 48Hz–51Hz / @60Hz: 58Hz–61Hz |
| Power Factor | >0.99 |
| Total Harmonic Distortion | <5% |
| Maximum Units per Branch | @120VAC: 2 / @230VAC: 4 |
| Peak Efficiency | 95% |
| Nominal MPPT Efficiency | 99.5% |
| Night Power Consumption | <1W |
| Operating Ambient Temperature | -40 ℃ ~ +65 ℃ |
| Storage Temperature | -40 ℃ ~ +85 ℃ |
| Dimensions (W×H×D) | 365mm × 230mm × 40mm |
| Weight | 3.5 kg |
| Max Current of AC Bus Cable | 20A |
| Waterproof Grade | IP65 |
| Cooling Mode | Natural Convection – No Fans |
| Communication | WIFI (cloud monitoring) |
| Transformer Design | High Frequency Transformers, galvanically isolated |
| Protection Functions | Island / Voltage / Frequency / Temperature / Current |
| Design Compliance | EN IEC61000-3-2:2019+A1:2021 · EN 61000-3-3 · EN IEC55014-2:2021 |
| Certifications | CE · ISO9001 · ISO14001 · LVD · RoHS · IEC |
PV array to hybrid inverter.
Three rules before you mount.
Check panel voltage
Keep each panel's Voc at or below 52 V and total input at or below 1200 W — the unit's maximum input voltage and power.
Mount out of direct weather
The housing is IP65, but the manual directs installers to avoid direct sunlight and rain and never cover the unit.
Seal unused ports
Close any unused connectors, and only qualified personnel may open the cover for service.
GTB1200, answered.
Four 300 W panels per unit, one on each of the four MC4 pairs. Keep each panel's open-circuit voltage at or below 52 V and total input at or below 1200 W.
Up to 4 units per branch on a 230 V grid, or 2 per branch on a 120 V grid, per the datasheet table — consistent with the wiring guide. The AC bus cable is rated 20 A.
Grid-tie only. The unit produces when 20–50 V DC and AC grid are both present; with PV alone the status light is red and the unit does not operate. Monitoring is via the Smart Life app over WiFi.
Quote a GTB1200 run.
Send your panel wattage, quantity and grid voltage — we return a per-branch layout within one working day.