GoodWe GW4.2K-DNS-G40 4.2 kW single-phase string inverter

The GoodWe GW4.2K-DNS-G40 is a fourth-generation single-phase string inverter designed for residential solar installations. It features dual MPPTs with 2 input strings, supports up to 200% PV oversizing, and allows a maximum input current of 20 A per string. With a nominal output power of 4.2 kW and maximum efficiency of 98.1%, it delivers high performance in a lightweight, compact form factor.

The inverter offers broad compatibility with modern high-power PV modules and includes integrated protection features: PV string current monitoring, insulation resistance detection, residual current monitoring, reverse polarity protection, and anti-islanding. Optional features include AI-driven Arc Fault Circuit Interrupter (AFCI) 3.0, Rapid Shutdown 2.0 transmitter, and Type II SPD on both AC and DC sides. It operates quietly at <25 dB with natural convection cooling and includes Power Supply at Night functionality.

Communication options include WiFi, LAN, Bluetooth, and 4G via the RS485 protocol. The inverter supports easy system expansion via the EzLink3000 smart dongle for parallel operation with MS G4 series units, eliminating the need for a separate datalogger. It carries an IP66 ingress protection rating and a 10-year factory warranty, and is designed to meet the highest safety and cybersecurity standards.