450 W PERC solar panel with 120 cells. Voc 40.87 V · Isc 13.72 A · TcVoc -0.26%/°C.
Select the panel you want to replace
Voc
40.87 V
Vmpp
34.23 V
Isc
13.72 A
Impp
13.15 A
TcVoc
-0.26 %/°C
TcPmax
-0.33 %/°C
Pmax
450 W
Cells
120
The Phono Solar PS450M6-20/UH is a 450 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 |
|---|---|---|---|
| 440 W | 40.55 V | 13.52 A | |
| 445 W | 40.71 V | 13.62 A | |
| 455 W | 41.02 V | 13.82 A | |
| 460 W | 41.19 V | 13.92 A |
The most critical specs to match are: cell count (must be exactly 120), Voc close to 40.87 V (within ±5%), and temperature coefficient TcVoc close to -0.26%/°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 Phono Solar PS450M6-20/UH.