JA Solar
JAM54D40 LR Series 450W-475W Solar Panel
Model range: JAM54D40-450/LR / JAM54D40-455/LR / JAM54D40-460/LR / JAM54D40-465/LR / JAM54D40-470/LR / JAM54D40-475/LR
6 pack sizes
Ja Solar solar panel family JAM54D40 LR Series 450W-475W Solar Panel, covering 450–475 W modules.
At a glance
Best for
Homes and business buildings comparing roof output and long-term value
Standout
Panel output sits around 450–475 per panel.
Watch out for
Panel suitability still depends on roof space, orientation, shading, and installer design.
Key specifications
A quick snapshot of the family. Compare module counts and capacity in the table below.
Panel power
450–475
Higher panel wattage can reduce how many panels you need for the same total system size.
Product warranty
25
Longer warranty usually means stronger long-term coverage.
Performance warranty
30
Useful for solar panels where long-term output matters.
Compare pack sizes
Capacity, voltage, and power rise as you stack more modules. Specs that stay the same on every size are listed underneath.
Numbers that change with size.
Swipe for more sizes
| Spec | 450/LR | 455/LR | 460/LR | 465/LR | 470/LR | 475/LR |
|---|---|---|---|---|---|---|
| Rated Maximum Power (Pmax)W | 450 | 455 | 460 | 465 | 470 | 475 |
| Open Circuit Voltage (Voc)V | 39.30 | 39.50 | 39.70 | 40.20 | 40.40 | 40.55 |
| Maximum Power Voltage (Vmp)V | 32.82 | 33.00 | 33.17 | 33.50 | 33.84 | 34.18 |
| Short Circuit Current (Isc)A | 14.48 | 14.56 | 14.64 | 14.65 | 14.66 | 14.67 |
| Maximum Power Current (Imp)A | 13.71 | 13.79 | 13.87 | 13.88 | 13.89 | 13.90 |
| Module Efficiency% | 22.5 | 22.8 | 23.0 | 23.3 | 23.5 | 23.8 |
The same on every size
- Power Binning Tolerance
- -5~+10 W
- Temperature Coefficient of Isc (α_Isc)
- +0.045 %/°C
- Temperature Coefficient of Voc (β_Voc)
- -0.250 %/°C
- Temperature Coefficient of Pmax (γ_Pmp)
- -0.290 %/°C
Numbers that change with size.
Swipe for more sizes
| Spec | 450/LR | 455/LR | 460/LR | 465/LR | 470/LR | 475/LR |
|---|---|---|---|---|---|---|
| Rated Maximum Power (Pmax)W | 341 | 344 | 348 | 352 | 356 | 360 |
| Open Circuit Voltage (Voc)V | 37.19 | 37.37 | 37.57 | 38.04 | 38.23 | 38.37 |
| Maximum Power Voltage (Vmp)V | 31.06 | 31.22 | 31.38 | 31.68 | 32.00 | 32.31 |
| Short Circuit Current (Isc)A | 11.58 | 11.65 | 11.71 | 11.72 | 11.73 | 11.74 |
| Maximum Power Current (Imp)A | 10.97 | 11.03 | 11.10 | 11.11 | 11.12 | 11.13 |