JA Solar Deep Blue 4.0 Pro JAM54D40-440/GB Solar Module 440 Watt Black Frame Bifacial Glass-Glass 25 Years Product Warranty

The JA Solar JAM54D40-440/GB is an n-type bifacial double-glass solar module with a nominal power of 440 Wp, a module efficiency of ≈22.5%, dimensions of 1722 × 1134 × 30 mm and a module weight of 21.5 kg. It features a tight power tolerance (0 ~ +3%), a low temperature coefficient (Pmax −0.29%/°C), robust mechanical ratings (5400 Pa front / 2400 Pa back) and is backed by 12 years product workmanship plus a 30-year linear performance warranty (typical degradation: 1% first year, ~0.4%/yr thereafter). 

• High power density — 440 Wp: maximizes energy yield per module and reduces BOS cost per kWp.
• Excellent efficiency — ~22.5%: more energy from less roof/ground area.
• Bifacial double-glass design: rear-side generation increases total yield depending on site albedo.
• Durable mechanics: rated for 5400 Pa (front) and 2400 Pa (back) — reliable in heavy-load locations.
• Stable thermal performance: low temperature coefficients (Pmax −0.29%/°C, Voc −0.26%/°C) for steady output in heat.
• Installer-friendly electrics: IP68 junction box with 3 bypass diodes, pre-wired cables and MC4/MC4-EVO2 compatible connectors.
• Long warranty & low degradation: 12 y product + 30 y power warranty reduces lifecycle risk and LCOE.

• Nominal power (Pmax): 440 Wp
• Cell technology: n-type (Solar Deep Blue 4.0 family)
• Module type / construction: Bifacial, Double-Glass (glass-glass)
• Module efficiency: ≈ 22.5% (440 W bin)
• Dimensions: 1722 × 1134 × 30 mm
• Weight: 21.5 kg
• Electrical (STC): Vmp 33.37 V | Imp 13.18 A | Voc 39.38 V | Isc 13.85 A | Power tolerance 0 ~ +3%
• Temperature coefficients: Pmax −0.29%/°C | Voc −0.26%/°C | Isc +0.046%/°C
• Mechanical / IP: Front load 5400 Pa | Back load 2400 Pa | Junction box IP68, 3 diodes
• Cables / connectors: Cable cross-section 4.0 mm² (IEC) / 12 AWG (UL); portrait cable 300 mm (+) / 400 mm (−); landscape cable 1200 mm (+) / 1200 mm (−); MC4 / MC4-EVO2 compatible.
• Warranty & degradation: 12 years product workmanship | 30 years linear power warranty (≈87.4% remaining at year 30 with 1% first-year & ~0.4% p.a.).
• Certifications: IEC 61215 / IEC 61730, ISO quality & safety standards and other industry certificates.

The JAM54D40-440/GB combines high per-module power (440 Wp), very good efficiency (~22.5%) and a rugged bifacial glass-glass construction — a practical, low-LCOE choice for commercial and utility installations. Purchase securely and transparently through SolarTraders via certified distributors with buyer protection. Register now and request a customized quote.

JAM54D40 GB 420-445W Higher power generation, better LCOE, n-type with very lower LID, better temperature coefficients and better low irradiance response.

JA Solar is one of the world’s largest manufacturers of photovoltaic modules. Their advanced cell technology ensures high efficiency, stable yields, and long lifespan – suitable for residential rooftops as well as large-scale solar plants. With best value pricing, fast availability, and attractive B2B conditions, JA Solar is the strong choice for professional solar installers.