The JA Solar JAM54D-41-460-LR-TS-AB-MC4 is a 460W n-type double-glass monofacial photovoltaic module in the JAM54D41 LR range, rated at 23.0% module efficiency with 40.60V Voc, 33.68V Vmp, 14.43A Isc and 13.66A Imp at STC. This black 54-cell size module suits residential and commercial string PV systems where a compact 1762mm panel, 1500V DC system rating and 30mm framed glass-glass construction are required. The LR variant is monofacial, so it should not be confused with JA Solar LB bifacial modules where rear-side generation is part of the design.

• Maximum output: 460W Pmax with 13.66A Imp at STC
• DC electrical rating: 40.60V Voc and 33.68V Vmp at STC
• Connector format: QC 4.10-351 or MC4-EVO2A connectors with 4mm² cable
• Cell format: 108 n-type monofacial half-cells using 16BB MBB technology
• System protection: 1500V DC maximum system voltage and 25A maximum series fuse rating
• Dimensions: 1762mm x 1134mm x 30mm, 22kg, black double-glass module
• Compliance: IEC 61215, IEC 61730, IEC 62941:2019, TÜV and CE listed on the datasheet

How does the 460W JAM54D41 perform in use?

The 460W rating is measured at STC, with irradiance at 1000W/m², cell temperature at 25°C and AM1.5G spectrum. In real installations, output will move with roof orientation, irradiance, module temperature, string voltage and inverter operating point.

The temperature coefficient of Pmax is listed as -0.290%/°C, which helps installers estimate output reduction as cell temperature rises above STC. JA Solar also highlights better low-irradiance response for the JAM54D41 LR range, which is relevant for UK roofs where light levels vary across the day and season.

This module sits well on a product page targeting buyers comparing 460W all-black solar panels, n-type solar panels and double-glass PV modules. For the wider category, link it into solar panels so users can compare output, format and frame size without leaving the buying journey.

Will the 30mm double-glass format suit the roof?

The module measures 1762mm x 1134mm x 30mm and weighs 22kg, so roof loading, lifting method, rail spacing and clamp approval all need checking before ordering. The front and rear glass are both listed as 1.6mm, giving this LR model a glass-glass construction while remaining a monofacial panel.

The datasheet drawing shows mounting holes and grounding holes on the rear frame, plus a 30mm frame depth. Static load ratings are listed as 5400Pa to the front and 2400Pa to the back, but the mounting system, roof structure and wind zone still need to be assessed for the actual site.

Because this is a black module, it suits projects where the finished roof appearance matters as well as wattage. It should be specified against the exact 460/LR row, not the 465W sibling, as the electrical values and module efficiency are different.

What string design details matter?

The maximum system voltage is 1500V DC and the maximum series fuse rating is 25A. String length must be calculated using corrected open-circuit voltage for the lowest expected site temperature, not only the STC Voc value printed in the product table.

The panel uses 4mm² cable and QC 4.10-351 or MC4-EVO2A connectors. Cable lengths are listed as 400mm positive and 200mm negative in portrait, or 1200mm positive and 1200mm negative in landscape, including the connector. This matters when planning string routing, home runs and module orientation.

The junction box is IP68 rated and uses three diodes. Commissioning should confirm polarity, insulation resistance, continuity, string voltage and current against the design before the array is energised. For suitable commissioning equipment, use solar testing equipment.

Why choose LR monofacial over a bifacial panel?

The LR version is the monofacial option in this family. That makes it the cleaner choice for conventional pitched roofs where rear-side gain is not part of the design and the priority is front-side output, black appearance and straightforward roof coverage.

For flat roofs, light-coloured surfaces or elevated arrays where rear-side light might contribute to yield, a bifacial LB module may be worth assessing separately. Do not merge the two product pages, as LR and LB variants answer different specification questions for installers and system designers.

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