The SMA Sunny Tripower CORE2 110kW 3 Phase 12 MPPT w/AFCI (STP110-60) is a state-of-the-art inverter specifically designed to maximize energy efficiency. With its superior AFCI (Arc-Fault Circuit Interrupter) technology, it helps homeowners achieve their energy savings goals. It boasts a ten-year manufacturers' warranty, and is the perfect tool to reduce energy costs.