Unlock superior solar performance with Solar Rex’s 550W Firman Solar Panel. Designed for demanding environments, this panel integrates monocrystalline half-cut PERC cell technology to minimize shading losses and boost energy harvest by up to 12% compared to conventional modules. Certified to IEC61215 standards, its robust anodized aluminum frame and 3.2mm tempered glass withstand snow loads (5400Pa) and high winds (2400Pa), while the IP68-rated junction box ensures dust/water resistance in coastal or desert climates
Perfect for rooftops, ground mounts, or industrial projects, the panel’s high system voltage (1500V DC) reduces balance-of-system costs by 7–9%. With a positive power tolerance (0 to +3%) and optimized temperature coefficient (-0.350%/°C), it maintains efficiency even at -40°C to +85°C. Backed by a 12-year product warranty and 25-year linear power output guarantee (min. 85% retention), it’s a future-proof investment for sustainable energy independence.
Specifications
| Parameter | Value |
|---|---|
| Power & Efficiency | |
| Maximum Power (Pmax) | 550W |
| Efficiency | 21.3% (21.396% tested) |
| Cell Technology | Monocrystalline Half-Cut PERC |
| Electrical Ratings | |
| Voltage (Vmp) | 42.4V |
| Current (Imp) | 12.98A |
| Open-Circuit Voltage (Voc) | 50.20V |
| Short-Circuit Current (Isc) | 13.82A |
| Durability | |
| Weather Resistance | IP68 (Junction Box) |
| Snow Load Rating | 5400Pa (IEC61215) |
| Wind Load Rating | 2400Pa (IEC61215) |
| Operating Temperature | -40°C to +85°C |
| Physical Design | |
| Dimensions | 2278 × 1134 × 35 mm |
| Weight | 29 kg |
| Frame Material | Anodized Aluminum Alloy |
| Warranty | 12-year product, 25-year power output (85%+ retention) |
| Certifications | IEC61215, Salt Mist Certified |












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