555 W PERC solar panel with 144 cells. Voc 50.02 V · Isc 14.07 A · TcVoc -0.275%/°C.
Select the panel you want to replace
Voc
50.02 V
Vmpp
42.11 V
Isc
14.07 A
Impp
13.18 A
TcVoc
-0.275 %/°C
TcPmax
-0.35 %/°C
Pmax
555 W
Cells
144
The JA Solar JAM72S30-555/MR is a 555 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.
Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.
| Model | Power | Voc | Isc |
|---|---|---|---|
| JAM72S30-540/MR | 540 W | 49.6 V | 13.86 A |
| JAM72S30-545/MR | 545 W | 49.75 V | 13.93 A |
| JAM72S30-550/MR | 550 W | 49.9 V | 14 A |
| JAM72S30-560/MR | 560 W | 50.15 V | 14.14 A |
| JAM72S30-565/MR | 565 W | 50.28 V | 14.21 A |
The most critical specs to match are: cell count (must be exactly 144), Voc close to 50.02 V (within ±5%), and temperature coefficient TcVoc close to -0.275%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.
A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.
If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original JA Solar JAM72S30-555/MR.