4.2 kW String with 2 MPPT trackers. DC input up to 950 V, MPPT range 180–850 V.
Max DC voltage
950 V
MPPT voltage range
180–850 V
Start-up voltage
180 V
Max input current per MPPT
9 A
Max short-circuit current
12.6 A
Nominal AC power
4.2 kW
MPPT configuration
2 MPPT × 1 strings
Inverter type
String
The KOSTAL PIKO 4.2 (2 MPPT) is a 4.2 kW inverter suitable for residential and commercial solar installations. The panel matcher above shows all compatible solar panels with optimal string configurations calculated automatically based on voltage, current, and temperature limits.
Use our string sizing calculator for a detailed 7-check compatibility analysis with temperature-adjusted voltage and current calculations.
The KOSTAL PIKO 4.2 (2 MPPT) has 2 MPPT tracker(s), each supporting 1 input string(s). The exact panel count per string depends on your panel's Voc relative to the MPPT range 180–850 V. Use the matcher above to find the optimal configuration automatically.
The KOSTAL PIKO 4.2 (2 MPPT) MPPT accepts DC voltages between 180 V and 850 V. At summer temperatures, the string Vmpp must stay above 180 V. At winter temperatures, the string Voc must not exceed the absolute DC limit of 950 V. The matcher calculates these temperature-adjusted checks automatically.
Yes — the KOSTAL PIKO 4.2 (2 MPPT) is compatible with any solar panel brand as long as the string voltage and current stay within its electrical limits. Panel brand does not affect compatibility. What matters is that the string Voc at coldest temperature stays below 950 V, Vmpp stays within 180–850 V, and total current stays below 12.6 A.