Solis is a major brand for solar inverters, which are crucial components of solar power systems. They produce a wide range of inverters for residential, commercial, and utility-scale applications, including single-phase, three-phase, and hybrid inverters. They also offer accessories like data logging sticks and monitoring solutions.
The Solis S6-GC3P(25-40)K03-ND is a three-phase grid-tied string inverter for commercial and industrial rooftop and ground-mount PV, available from 25 to 40 kW. It runs 3 MPPTs with up to 6 strings, accepts 42 A per MPPT (up to 21 A per string) and a 1100 V max input, and supports a >150% DC/AC ratio for generous PV oversizing. Peak efficiency is up to 98.6% (98.5% on most models, 98.0–98.1% EU). Protection is comprehensive and integrated: DC switch, surge protection (SPD), AFCI 2.0 arc-fault protection, DC reverse-polarity, short-circuit, output overcurrent, anti-islanding, temperature and string monitoring, plus I/V curve scanning. The transformerless design carries an IP66 enclosure with C5 anti-corrosion rating for harsh and coastal sites.