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Brand range: 255W–450W
Monocrystalline
Wuxi Suntech Power Co., Ltd STP320S-A21/Wfhb
Max Power
320W
Efficiency
18.5%
Operating V
35.4V
Warranty
25Y
Technical Specifications
| Open Circuit Voltage (Voc) | 41.7V |
| Short Circuit Current (Isc) | 9.64A |
| Voltage at Pmax (Vmp) | 35.4V |
| Current at Pmax (Imp) | 9.04A |
| Temp. Coefficient of Pmax | -0.341%/°C |
| Dimensions | 1690 x 1024 x 35 mm |
| Weight | 21.6kg |
| NOCT | 45.5°C |
| PTC Rating | 303.2W |
📋 Data verified: June 2026
📄 Specs based on STC (1000 W/m², 25°C, AM 1.5)
🏷️ 128 Wuxi Suntech Power Co., Ltd models in database
FAQ
How efficient is the Wuxi Suntech Power Co., Ltd STP320S-A21/Wfhb?
This panel has 18.5% efficiency, which is standard for commercial solar panels.
How long is the warranty for the Wuxi Suntech Power Co., Ltd STP320S-A21/Wfhb?
The STP320S-A21/Wfhb comes with a 25-year product warranty covering defects and degradation.
What are the dimensions and weight of the Wuxi Suntech Power Co., Ltd STP320S-A21/Wfhb?
It measures 1690 x 1024 x 35 mm and weighs 21.6kg.
What is the max power output of the Wuxi Suntech Power Co., Ltd STP320S-A21/Wfhb?
The Wuxi Suntech Power Co., Ltd STP320S-A21/Wfhb is rated at 320W under STC (1000 W/m², 25°C, AM 1.5).
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📊 Brand Context
Wuxi Suntech Power Co., Ltd offers 128 solar panel models from 255W to 450W.
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