The FAR7-G automatic grid-connected circuit breaker provides island protection, leakage protection and auto-reclosing for distributed power supplies. The product is suitable for various distributed new energy power generation automatic grid connection occasions. This series of products has small volume, high breaking, reliable action, stable performance and good human-computer interaction interface. It has simple installation and has island protection through over-voltage and over-voltage protection. When the main power grid returns to normal, the circuit breaker automatically network. It complies with the requirements of State Grid Q/GDW-2013 "Technical Specifications for Distributed Photovoltaic Grid-Connected Low Voltage Circuit Breakers".