JA Solar JAM54D41-LB – 460W Bifacial Glass-on-Glass Full Black (N-Type)

The JA Solar JAM54D41-LB 460W is an absolute premium solar module that combines maximum performance, exceptional durability and a sophisticated ‘Full Black’ aesthetic. Thanks to the advanced N-type cell technology achieves an impressive rated output of 460 watts from a standard surface area (under 2 m²), making it the perfect choice for modern homes with limited roof space.

The double-glazed construction (glass-glass) makes the module extremely resistant to environmental influences such as hail, salt or ammonia and ensures significantly higher fire safety than conventional glass-foil modules. As a bifacial module, it also utilises scattered light falling on the rear surface to generate electricity, which increases output, particularly on cloudy days.

Highlights at a glance

• N-type technology: Utilises state-of-the-art cell chemistry for higher efficiency, better low-light performance and virtually zero light-induced degradation (LID).
• Bifacial power generation: The active module backside also converts reflected light and ambient light into energy, which can increase the total yield (depending on the mounting method) by 5-30%.
• Glass-to-glass construction: Two layers of tempered glass provide hermetic protection for the cells, resulting in outstanding mechanical strength and durability.
• Elegant Full Black design: A black frame, black cells and a dark backsheet ensure a uniform, unobtrusive appearance that blends perfectly into dark roofs.
• High efficiency: With a peak output of 460 watts in a compact design, it is one of the most powerful modules in its class (108 half-cells).
• Long-term warranty: Benefit from an industry-leading 25-year product warranty and a 30-year linear performance warranty.

Areas of application

• Residential rooftop systems: Ideal for homeowners who value maximum aesthetics (black finish) and the highest level of safety (glass-glass).
• Carports & patios: Thanks to its bifacial design and robust glass rear panel, it is also well suited to semi-open canopies.
• Commercial & industry: For projects where durability and fire protection class (often better with glass-glass) are crucial.

Installation & safety instructions

• Clamping range: When installing, please ensure you adhere to the manufacturer’s specified clamping ranges on the 30 mm frame to maintain the warranty and ensure the snow load capacity (5400 Pa).
• Glass handling: Glass-glass modules are sturdy, but they are sensitive at the corners. Never place the modules on their corners without protection during installation (use edge protection!).
• Cable management: Bifacial modules often have a slightly shorter junction box or cable (approx. 1.2 m). Before planning your string layout, check whether the cable length is sufficient for your planned installation method (portrait/landscape) or whether extension cables are required.

FAQs about the JA Solar JAM54D41-LB

What does “bifacial” offer in a Full Black module on a normal roof?

Even with a roof-parallel installation (approx. 10 cm clearance from the tiles), scattered light and reflections reach beneath the module. Although the “extra gain” here is lower than on a flat roof with a white background, the bifacial cell still helps to make better use of diffuse light. The main advantage of “Full Black” here, however, lies in the glass-glass stability and the appearance.

Why is N-type better than P-type?

N-type cells have a different doping (phosphorus instead of boron). As a result, they do not suffer from the “LID effect” (Light Induced Degradation), meaning they do not lose any power during the first few hours of operation. They also have a better temperature coefficient – meaning they generate more electricity than conventional modules, even on hot summer days.

Will the module fit my balcony power plant?