【CENTRALIZED MANAGE】Conveniently interconnect and manage PV panel, charge controller, battery and inverter in solar power system. 【SAFETY PROTECTION】Surge protection device and ground fault protection device can be installed to protect equipments from lightning protection and ground faults. 【EASY TO INSTALL】Offers built-in standard DIN rail for easy installation and mounting holes for fixation 【RELIABLE QUALITY】Built-in Copper Busbars have good electrical conductivity, ensure stable operation of the solar system. The box is made of cold-formed steel, durable, and resistant to corrosion. 【WORRY-FREE USE】IP54 indoor rated. Material and workmanship warranty for 1 year.