Solis 125kW Solar Inverter - 3 Phase Inverter with AFCI 2.0

• Manufacturer Solis

The Solis S6-GC125K-AFCI2.0 (125kW, 3-phase) is designed for installers delivering high-performance rooftop and ground-mount systems, especially where complex arrays, faster commissioning, and dependable protection features can make or break a project.

Flexible DC design for real-world arrays

With 1100V max DC input and a wide MPPT operating window of 160–1000V, the inverter supports modern string sizing and helps optimise yield across varied orientations and string lengths. The 125kW model provides 10 MPPTs and up to 20 string inputs, enabling cleaner layouts with fewer compromises when working around multiple roof faces or mixed module groups.

High efficiency and stronger site returns

Commercial customers care about kWh delivered and system availability. The S6-GC series delivers up to 98.7% max efficiency and 98.3% EU efficiency, supporting stronger performance projections and better lifetime energy yield.

Built-in safety and smarter prevention (incl. AFCI 2.0)

For risk reduction and compliance-led projects, the datasheet specifies extensive protections and monitoring, including insulation monitoring, residual current detection, Type II surge protection on DC/AC, anti-islanding, string monitoring, and more. The variant you’ve referenced highlights Integrated AFCI 2.0 (noted as optional with activation required), supporting rapid arc detection to improve fire-safety strategy on applicable designs. It can also cooperate with RSD (Rapid Shutdown) for enhanced fire safety (optional).

Commissioning, monitoring and controls that help you support customers

The platform includes practical tools for O&M such as I/V curve scanning, string monitoring, and an option for integrated meteorological equipment with “system inefficiency warning” to help spot underperformance earlier. For power management, Solis offers a master–slave export power control solution that supports up to 10 units in parallel, with optional three-phase unbalanced output control for compatibility with varied grid requirements.

Built for outdoor commercial environments

With IP66 ingress protection, intelligent fan cooling, <2W night self-consumption, and an operating range of -30°C to +60°C, it’s suited to demanding sites. Connectivity includes dual independent RS485 ports plus optional WiFi/GPRS/PLC modules for third-party monitoring integration.

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