Use the 430W electrical row
The current REC datasheet gives the 430W Alpha Pure-R values as 50.5V Vmp, 8.52A Imp, 59.7V Voc and 8.91A Isc at STC. Those values—not wattage alone—drive string and MLPE compatibility.
Model cold-weather string voltage
String Voc rises as cell temperature falls. Multiply the panel count by a temperature-adjusted Voc and keep the result below the inverter or charge-controller maximum input voltage. The solar datasheet guide explains the four core electrical values.
Check current per input
For parallel strings or module-level electronics, compare Isc and Imp with the manufacturer’s current limits. Connector compatibility does not override an electrical mismatch.
Keep regional certification separate
REC sells the Alpha Pure-R family across multiple markets, but certification, warranty route and supplied watt class can differ. Confirm the exact nameplate and project market rather than assuming a family page proves every local detail.