REFUsol 33K-3T - String inverter
Product information "REFUsol 33K-3T - String inverter"
The REFUsol 33K-3T is a high-performance 33 kW string inverter with three MPP trackers and an efficiency of up to 98.6% – ideal for large commercial and industrial PV systems.
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REFUsol 33K-3T – Maximum performance for professional applications
As the most powerful model in the REFUsol 3T series, the 33K-3T was developed specifically for large commercial and industrial installations. With its three independent MPP trackers and a long-term overload capacity of 110%, it delivers consistently high energy yields, even with complex roof orientations or mixed module arrays. The compact design and robust IP65 housing ensure easy integration and reliable operation under all conditions.
Highlights
- 33 kW nominal power at 37 kVA AC power
- 3 independent MPP trackers for flexible string layouts
- Efficiency up to 98.6% / EU efficiency 98.2%
- 110% overload capacity for maximum energy yield
- Compatible with older REFUsol inverters – ideal for repowering
- Communication via RS485, USB, Ethernet or optional WiFi logger
- Remote monitoring via the REFUview platform with performance analysis
- IP65 housing with active cooling system
- 10-year manufacturer’s warranty
Technical data – REFUsol 33K-3T
| Rated power (AC) | 33 kW |
|---|---|
| Max. AC power | 37 kVA |
| Recommended PV output | up to 49.5 kWp |
| Max. input voltage | 1100 V |
| Operating voltage range | 180 – 1000 V |
| Number of MPP trackers | 3 |
| Max. current per MPPT | 40 A |
| Max. output current | 56 A |
| Mains connection | 3P/N/PE – 230/400 V, 50/60 Hz |
| Efficiency (max. / EU) | 98.6% / 98.2% |
| Protection class | IP65 |
| Cooling | Active (fan-assisted) |
| Dimensions (H × W × D) | 480 × 585 × 220 mm |
| Weight | 36 kg |
| Certificates | VDE-AR-N 4105, VDE-AR-N 4110, EN 50549-1, etc. |
| Item number | 853P033 |
Safety & Communication
The REFUsol 33K-3T features an integrated DC load break switch as well as comprehensive protection mechanisms against DC reverse polarity, earth fault, overtemperature, overcurrent and overvoltage. Communication takes place via RS485, USB or Ethernet; a WiFi logger is available as an option. The integrated LCD display enables simple operation and displays all operating data in real time. Alternatively, monitoring can be carried out conveniently via the REFUview online platform.
Conclusion
With high efficiency, robust construction and versatile communication options, the REFUsol 33K-3T is the perfect solution for medium to large-scale PV systems in the commercial and industrial sectors – a future-proof investment for sustainable energy generation.
| Item height (mm): | 189 |
|---|---|
| Item length (mm): | 430 |
| Item width (mm): | 520 |
| Manufacturer's part number: | 853P033.000 |
| Weight (kg): | 36 |
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