This 120V - 40A IGBT Based Solar MPPT Charge Controller is a heavy duty device for Home/Industrial application. This MPPT based Solar Management Unit(SMU) is custom made as per your requirement where you can connect more no.of solar panels in series for off-grid projects ranging up to 6,000 Watts. The 400V Voc helps you connect an existing solar plant with more modules in series without changing the PV panel grouping!!!