The Solis S5-GC(25-50)K series is a three-phase string inverter family for commercial and industrial rooftops, with seven models from 25 to 50 kW including 480 V HV versions. It accepts up to 1100 V DC with a 200–1000 V MPPT range and offers 3 or 4 MPPTs (up to 8 strings), making it well suited to multi-facing roofs.

Peaking at 98.8% efficiency, it combines intelligent string monitoring with smart I-V curve scanning, optional AFCI 2.0 arc-fault protection and optional nighttime PID recovery. The IP66 enclosure with intelligent fan cooling operates from -25 to +60°C, and DC Type II / AC Type II surge protection plus 24-hour load consumption monitoring round out a robust C&I package.