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REC640AA Alpha Pro-M Specifications
| Model | Alpha Pro M 640W |
| Maximum Power Output | 640W |
| Module Efficiency | 22.5% |
| Power Density | 20.9 W/ft² |
| Open Circuit Voltage (Voc) | 44.6V |
| Short Circuit Current (Isc) | 17.93A |
| Temperature Coefficient (Pmax) | -0.24%/°C |
| Operating Temperature Range | -40°F to 158°F (-40°C to 70°C) |
| System Voltage | 1500V |
| Mechanical Load Rating | 5400 Pa front / 2400 Pa rear |
| Dimensions | 85.6 × 51.4 × 1.2 in |
| Weight | 71.6 lb |
| Product Warranty | 20 Years |
| Performance Warranty | 25 Years (92% at year 25, 0.25% annual degradation) |
Complete solar systems engineered for membrane or torch down roofs, standing metal seam, corrugated steel, concrete, flashed or non-flashed composition, tile, metal, and virtually any sloping roof application. Available at competitive wholesale pricing.
REC Alpha Pro M Series 640W Solar Panel
SKU REC-ALPHA-PRO-M-640W
REC Alpha Pro M Series 640W
The REC Alpha Pro M 640W solar panel delivers exceptional performance through advanced heterojunction (HJT) cell technology, achieving 22.5% module efficiency with zero light-induced degradation (LID). Featuring 120 half-cut bifacial cells in REC's iconic Twin design configuration, this panel produces 640W of power with superior temperature coefficients (-0.24%/°C) for optimal performance in hot conditions. The panel operates within a 1500V system voltage and achieves a power density of 20.9 W/ft², maximizing energy production for industrial and commercial applications.
The super-strong 30mm anodized aluminum frame incorporates support bars that allow extreme mechanical loads up to 5400 Pa front-side, ensuring long-term structural integrity. Manufactured in Singapore with IP68-rated junction boxes and Stäubli MC4-EVO2 connectors, the panel meets IEC 62790:2020 and IEC 62852:2014 standards.
REC Alpha Pro M 640W (REC640AA) Features
- Zero Power Loss Guarantee: Heterojunction technology eliminates light-induced degradation, ensuring full 640W rated output from day one through decades of operation
- Twin Design Resilience: Dual-section architecture maintains energy production in partial shade conditions, minimizing losses from shadows or soiling
- Extreme Load Capacity: 5400 Pa front load rating with reinforced frame and support bars withstands heavy snow, wind, and hail (35mm at 27.2 m/s)
- Advanced Cell Technology: Solder-free wire connections increase current flow efficiency while eliminating microcrack formation for long-term reliability
- Comprehensive Warranty: 20-year product coverage with 25-year performance guarantee, eligible for REC ProTrust extension to 25-year product and labor warranty
REC Alpha Pro M 640W Safety and Performance
The REC Alpha Pro M 640W meets rigorous international safety and performance standards for reliable global deployment.
- IEC 62790:2020 - Junction box safety and performance certification with IP68 ingress protection
- IEC 62852:2014 - Connector performance standards for Stäubli MC4-EVO2 connectors (IP68 when connected)
- EN 12150 - Tempered solar safety glass with anti-reflective surface treatment compliance
- EN 50618:2014 - Solar cable specification compliance for 12 AWG conductors
- 1500V System Rating - Certified for high-voltage commercial and utility-scale applications
- Hail Impact Testing - Rated for 35mm hailstones at 27.2 m/s impact velocity
REC Alpha Pro M Bifacial Series Review
The zero light-induced degradation characteristic in these modules ensures that installers can confidently project energy yields based on the full 640W rating, while the exceptional -0.24%/°C temperature coefficient provides 15-20% better hot-weather performance compared to standard panels with -0.35% to -0.40% coefficients. The Twin design's dual-section architecture effectively functions as two independent panel halves, allowing one section to maintain production when the other experiences shading, a critical advantage for residential installations with complex roof geometries or intermittent shade patterns.
The 1500V system voltage rating enables longer string configurations and reduced balance-of-system costs for commercial applications, while the IP68-rated junction box and connectors ensure reliable operation in harsh environmental conditions. For professional installers, the 20-year product warranty with optional REC ProTrust extension to 25 years, combined with a 25-year performance warranty guaranteeing 92% output retention (0.25% annual degradation), provides superior long-term value and customer confidence.
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