GTB microinverters, 400–1600 W.
Module-level grid-tie conversion for 120 V and 230 V grids, from a single 400 W panel up to a 1600 W four-panel unit. Every GTB model shares a 22–48 V MPPT window, 95% peak efficiency, 99.5% MPPT efficiency, IP65 enclosure and WiFi cloud monitoring.
Match the panel count, not the other way around.
One MC4 pair for a single panel, two pairs for two panels, four pairs for four. Units-per-branch figures below are the conservative per-wiring-guide values.
GTB400 · 400 W
One-panel unit for 1×400 W modules.
View GTB400
GTB600 · 600 W
Two-panel unit for 2×300 W modules.
View GTB600
GTB800 · 800 W
Two-panel unit for 2×400 W modules.
View GTB800
GTB1200 · 1200 W
Four-panel unit for 4×300 W modules.
View GTB1200
GTB1400 · 1400 W
Four-panel unit for 4×350 W modules.
View GTB1400
GTB1600 · 1600 W
Four-panel unit for 4×400 W modules.
View GTB1600One platform, six ratings.
Every model shares the same MPPT, efficiency, protection and compliance backbone; only the panel count, current, dimensions and weight change.
| Rated / max output power | 400 / 600 / 800 / 1200 / 1400 / 1600 W |
|---|---|
| Max input power | Matches rated output per model |
| MPPT voltage range | 22–48 V |
| Operation voltage range | 20–50 V |
| Maximum input voltage | 52 V |
| Startup voltage | 22 V |
| Max input current | 12 A (400) · 12 A×2 (600/800) · 15 A×2 (1200–1600) |
| Grid type | 120 V & 230 V single-phase |
| Nominal output current | 5 A @120 V · 2.6 A @230 V |
| Power factor | >0.99 |
| Total harmonic distortion | <5% |
| Peak efficiency | 95% |
| MPPT efficiency | 99.5% |
| Night consumption | <1 W |
| AC bus max current | 20 A |
| Enclosure | IP65 · natural convection, no fans |
| Dimensions (W×H×D) | 185×160×40 to 365×230×40 mm |
| Weight | 1.2 kg (400) · 2.45 kg (600/800) · 3.5 kg (1200–1600) |
| Units per branch (230 V) | 10 (400) · 8 (600/800) · 4 (1200–1600) |
| Units per branch (120 V) | 5 (400/600/800) · 2 (1200–1600) |
| Compliance | CE · ISO9001 · ISO14001 · LVD · RoHS · IEC · EN IEC61000-3-2/-3-3 · EN IEC55014-2 |
Watch every panel from your phone.
Each unit pairs over WiFi with the Smart Life app (Android and iOS) for cloud monitoring — status uploads every minute — with Bluetooth for first-time pairing. A high-frequency transformer provides galvanic isolation between the PV array and the grid, with the protective earth taken from the AC cable so no separate ground rod is needed.
- Island, voltage, frequency, temperature and current protection
- High-frequency, galvanically isolated transformer design
- -40 °C to +65 °C operating range, fanless cooling
- Integrated AC bus cable for plug-and-play branches
Microinverters, answered.
Keep the panel's open-circuit voltage (Voc) at or below the 52 V maximum input voltage, and keep total panel power at or below the unit's maximum input power. The MPPT window is 22–48 V with a 22 V startup voltage.
No. These are grid-tie inverters: they only produce when both DC (20–50 V) and AC grid are present. With PV alone and no grid, the unit shows a red status light and does not operate.
Yes. The single-phase output can be grouped into a three-phase system by wiring separate branches as PV Array A, B and C. Confirm the per-phase unit count with your wiring plan before ordering.
Quote a GTB microinverter run.
Send your panel wattage, quantity and grid voltage — we return a per-branch layout and quote within one working day.