--- title: "JA Solar JAM54D40-455/LB vs REC REC460AA PURE-RX - Solar Panel Comparison | ComparePV" description: "Compare JA Solar JAM54D40-455/LB vs REC REC460AA PURE-RX side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/rec-rec460aa-pure-rx" image: "https://comparepv.com/og/compare/panels/ja-solar-jam54d40-455-lb-1/rec-rec460aa-pure-rx.png" updated: 2026-09-11 --- # JA Solar JAM54D40-455/LB vs REC REC460AA PURE-RX 14 differences, and they point both ways The largest is temperature coefficient: 0.050 %/°C better in heat. 5 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [JA Solar JAM54D40-455/LB](https://comparepv.com/panel/ja-solar-jam54d40-455-lb-1) | [REC REC460AA PURE-RX](https://comparepv.com/panel/rec-rec460aa-pure-rx) | | Manufacturer | JA Solar | REC | | Power | 455 Wp | 460 Wp | | Efficiency | 22.80 % | 22.10 % | | Technology | TOPCon | HJT | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | JAM54D40-455/LB | REC460AA PURE-RX | Difference | | --- | --- | --- | --- | | Temperature coefficient | -0.290 %/°C | -0.240 %/°C | +0.050 %/°C for REC460AA PURE-RX | | Module efficiency | 22.80 % | 22.10 % | +0.70 pp for JAM54D40-455/LB | | Performance warranty | 30 yrs | 25 yrs | +5 yrs for JAM54D40-455/LB | | Annual degradation | 0.40 %/yr | 0.25 %/yr | -0.15 %/yr for REC460AA PURE-RX | | Product warranty | 12 yrs | 25 yrs | +13 yrs for REC460AA PURE-RX | | Power density | 227.7 Wp/m² | 220.9 Wp/m² | +6.8 Wp/m² for JAM54D40-455/LB | | Open-circuit voltage | 39.50 V | 65.70 V | 26.20 V apart | | Short-circuit current | 14.56 A | 8.88 A | 5.68 A apart | | Module area | 1.998 m² | 2.082 m² | 0.084 m² apart | | Cell technology | TOPCon | HJT | TOPCon vs HJT | | Voltage at max power | 33.00 V | 54.90 V | 21.90 V apart | | Current at max power | 13.79 A | 8.38 A | 5.41 A apart | | Cell count | 108 | 88 | 20 cells apart | | Dimensions | 1762x1134x30 mm | 1728x1205x30 mm | 1762x1134x30 mm vs 1728x1205x30 mm | ## Every compared parameter | Parameter | JAM54D40-455/LB | REC460AA PURE-RX | | --- | --- | --- | | Rated power | 455 Wp | 460 Wp | | Module efficiency | 22.80 % | 22.10 % | | Power density | 227.7 Wp/m² | 220.9 Wp/m² | | Open-circuit voltage | 39.50 V | 65.70 V | | Voltage at max power | 33.00 V | 54.90 V | | Short-circuit current | 14.56 A | 8.88 A | | Current at max power | 13.79 A | 8.38 A | | Temperature coefficient | -0.290 %/°C | -0.240 %/°C | | Dimensions | 1762x1134x30 mm | 1728x1205x30 mm | | Module area | 1.998 m² | 2.082 m² | | Weight | 22.0 kg | 22.7 kg | | Weight per kWp | 48.4 kg/kWp | 49.3 kg/kWp | | Product warranty | 12 yrs | 25 yrs | | Performance warranty | 30 yrs | 25 yrs | | Annual degradation | 0.40 %/yr | 0.25 %/yr | | Cell technology | TOPCon | HJT | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 108 | 88 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, JAM54D40-455/LB:** 15,266 kWh - **Cumulative output, REC460AA PURE-RX:** 15,628 kWh - **Gap:** 362 kWh ## Output when hot | Condition | Cell temperature | JAM54D40-455/LB | REC460AA PURE-RX | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 455 W | 460 W | 100.0% of rated power | | Cool, bright day | 40 °C | 435 W | 443 W | 95.7% of rated power | | Typical summer roof | 55 °C | 415 W | 427 W | 91.3% of rated power | | Hot roof | 70 °C | 396 W | 410 W | 87.0% of rated power | ## Against the whole database | Measure | JAM54D40-455/LB | REC460AA PURE-RX | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,769 | #6,076 | 14,129 | JAM54D40-455/LB leads by 3,307 places | | Power density | #2,943 | #6,070 | 14,129 | JAM54D40-455/LB leads by 3,127 places | | Heat behaviour | #2,220 | #13 | 14,129 | REC460AA PURE-RX leads by 2,207 places | | Weight | #2,224 | #2,878 | 14,129 | JAM54D40-455/LB leads by 654 places | | Warranty | #21 | #9,912 | 14,129 | JAM54D40-455/LB leads by 9,891 places | | Overall | #8,580 | #7,445 | 14,129 | REC460AA PURE-RX leads by 1,135 places | ## Questions ### Which panel is better: JA Solar JAM54D40-455/LB or REC REC460AA PURE-RX? According to our database: **JA Solar JAM54D40-455/LB** has higher module efficiency (**22.80%** vs **22.10%**); **REC REC460AA PURE-RX** tolerates heat better (temp coeff **-0.240%/°C** vs **-0.290%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of JA Solar JAM54D40-455/LB and REC REC460AA PURE-RX? **JA Solar JAM54D40-455/LB** has a module efficiency of **22.80%**, while **REC REC460AA PURE-RX** is **22.10%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does JA Solar JAM54D40-455/LB use vs REC REC460AA PURE-RX? **JA Solar JAM54D40-455/LB** uses **TOPCon** cells; **REC REC460AA PURE-RX** uses **HJT**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on JA Solar JAM54D40-455/LB and REC REC460AA PURE-RX? **JA Solar JAM54D40-455/LB** has a **30 years** power warranty; **REC REC460AA PURE-RX** has a **25 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are JA Solar JAM54D40-455/LB and REC REC460AA PURE-RX bifacial panels? Both **JA Solar JAM54D40-455/LB** and **REC REC460AA PURE-RX** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [JA Solar JAM54D40-455/LB vs JA Solar JAM54D40-475/LB](https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/ja-solar-jam54d40-475-lb) - 7 differences, the largest is module efficiency - [JA Solar JAM54D40-455/LB vs JA Solar JAM54D40-470/LB](https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/ja-solar-jam54d40-470-lb) - 5 differences, the largest is module efficiency - [JA Solar JAM54D40-455/LB vs JA Solar JAM54D40-465/LB](https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/ja-solar-jam54d40-465-lb) - 5 differences, the largest is module efficiency - [JA Solar JAM54D40-455/LB vs JA Solar JAM54D40-460/LB](https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/ja-solar-jam54d40-460-lb-1) - One difference: module efficiency - [JA Solar JAM54D40-455/LB vs JA Solar JAM54D41-455/LB](https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/ja-solar-jam54d41-455-lb-1) - One difference: product warranty - [JA Solar JAM54D40-455/LB vs JA Solar JAM54D41 455/LB](https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/ja-solar-jam54d41-455-lb) - One difference: cell technology --- Source: https://comparepv.com/compare/ja-solar-jam54d40-455-lb-1/rec-rec460aa-pure-rx Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.