Growatt WIT 28–55kW Commercial Hybrid Inverter | 208/220V 3-Phase
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Growatt WIT 28–55kW Commercial Hybrid Inverter | 208/220V 3-Phase
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What it is, and what it is for
The Growatt WIT 28–55kW Commercial Hybrid Inverter is designed for U.S. commercial solar and battery storage applications. Available in 28kW, 35kW, 40kW, and 55kW models, it supports large PV arrays, high-voltage batteries, backup power, generator control, and system expansion up to 165kW.
Key Features
- 28kW–55kW hybrid inverter
- 208/220V three-phase output
- Up to 108kW recommended PV input
- Up to 10 MPPT trackers
- 800V max PV voltage
- 380–650V battery range
- Up to 62.3kW battery charge/discharge power
- 98% max efficiency
- UPS function and black start
- 100% unbalanced backup load support
- 110% continuous AC overload capability
- Generator remote control
- RS485 / CAN / USB communication
- IP66 enclosure
- Optional AFCI
Available Models
- WIT 28K-HU-US L2 – 28kW, up to 54kW PV
- WIT 35K-HU-US L2 – 35kW, up to 75.6kW PV
- WIT 40K-HU-US L2 – 40kW, up to 86.4kW PV
- WIT 55K-HU-US L2 – 55kW, up to 108kW PV
Ideal for commercial buildings, warehouses, farms, workshops, microgrids, and commercial battery backup systems.
1 component
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Every number, by component.
The figures the manufacturer publishes. The datasheet above is the reference if the two ever differ.
| Specification | Details |
|---|---|
| Nominal AC Power | 28kW |
| Max. recommended PV power | 54kW |
| Output AC nominal power | 28kW |
| Input AC nominal power | 56KW |
| Max. Efficiency | 98.00% |
| Protection Mechanisms | Battery reverse protection, AC/DC surge protection, Insulation resistance monitoring, Ground fault monitoring, Grid monitoring, Residual current monitoring unit, AC short-circuit protection, Anti-islanding protection |
| Cooling System | Smart air cooling |
| Ingress Protection | IP66/NEMA 4X |
| Operating Temperature Range | -30°C to +60°C (>50°C derating) |
| Communication Interfaces | RS485/CAN/USB, optional RS485/4G/LAN-X |
| AC Output Voltage and Frequency | 208/220V, 50/60Hz |
| Max. Output Current | Varies by model, up to 168.1A@208V for the highest capacity models |
| Dimensions and Weight | 820x1350x510mm, approx. 720kg |
| Warranty | 5 to 7 years |
| Certifications | UL1741, IEEE1547, and compliant with various other standards |
Before you order.
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What if I'm not sure this is the right product?
Ask before you order. Send us what you need to run, or your pool or well figures, and an engineer will confirm the choice — it costs nothing. Or use the finder below, which sizes from what you actually run and shows its reasoning.
