Meyer Burger MB_W120AyB_395 – 395W Half‑Cell Heterojunction Solar Panel

The Meyer Burger MB_W120AyB_395 offers 395W of power using advanced heterojunction (HJT) technology with SmartWire Connection Technology (SWCT®). Designed in Switzerland and made in Germany, this module delivers industry-leading efficiency and reliability in a refined, all-black frame aesthetic suited for both aesthetic and high-performance installations. 

Key Features

• Premium 395W Output & ~21.5% Efficiency – Maximizes energy yield per square meter 

• 120 Half-Cell HJT with SWCT® – Exceptional cell stability, enhanced safety, and better shade tolerance 

• All-Black Frame & White Backsheet – Combines sleek design with thermal management 

• High Durability – Certified up to 6000 Pa front (downforce) and 4000 Pa rear (uplift) wind/snow load 

• Environmental & Quality Certifications – Includes IEC 61215:2016, IEC 61730, UL 61730, PID (IEC 62804), salt mist (IEC 61701), and more 

• Eco-Conscious & Sustainable – Manufactured without lead or PFAS, using 100% renewable energy 

• Industry-Leading 25‑Year Product & Performance Warranty – Guarantees ≥ 92% output at year 25 with degradation rates under 0.25%/year 

Technical Highlights

• Rated Power (STC): 395 W (0 / +5 W tolerance)

• Efficiency: ~21.5%

• Cell Technology: Heterojunction (Mono HJT) with SmartWire (120 half-cells)

• Voc / Isc: ~44.5 V / ~10.6 A

• Vmp / Imp: ~38.3 V / ~10.3 A

• Max System Voltage: 1000 V DC

• Series Fuse Rating: 20 A

• Temperature Coefficient (Pmax): −0.259% / °C

• Operating Temperature: −40 °F to +185 °F (−40 °C to +85 °C)

• Frame: 35 mm black anodized aluminum; front tempered glass 3.2 mm with anti-reflective surface

• Junction Box: IP68-rated with 3 diodes

• Connector & Cable: MC4 / MC4‑Evo2 etc., 4 mm², 1.2 m length 

Why This Panel Stands Out

• High energy output even in low light or hot climates thanks to HJT + SWCT®

• Long-lasting reliability backed by a robust warranty and low degradation profile

• Sophisticated aesthetic design that enhances curb appeal

• Efficient and streamlined installation, with compact 1767 × 1041 mm footprint for easy handling

• Sustainably manufactured offering premium performance without environmental compromise

Document: Specification Sheet