Distributed photovoltaic low-voltage grid connected cabinet is mainly used for distributed photovoltaic power generation projects in AC 400V low-voltage systems. The low-voltage photovoltaic grid connected cabinet mainly consists of anti islanding protection devices (can also be equipped with fault disconnection devices, online monitoring devices for power quality), isolation knife switches, grid disconnectors, lightning arresters, temperature and humidity controllers, energy metering devices, and cabinets. The cabinet type and cabinet size are customized according to the on-site situation as MNS, GCS, GCK, GGD, etc.