S6-GC(50-75)K-LV is a new generation of 220V three-phase products,designed to provide low LCOE solutions for large low-voltage grid-connected PV projects for commercial roofing and utility projects. 8 MPPT design, String current up to 21A, perfectly match large current bifacial modules; and with export power control, Intelligent string monitoring, smart I-V curve scan function etc;And remote O&M function. Really best choice for commercial 220V three-phase projects