4 String Solar PV Combiner Box:Our PV Combiner Box is a perfect device designed to reduce the connection line between PV modules and inverters, facilitate maintenance and improve reliability. Equipped with high-voltage lightning arresters, 15A DC fuses, and circuit breakers to play a role in circuit protection and lightning protection. It supports photovoltaic On-Grid/Off-Grid solar power generation systems, solar panel systems, up to 700W in 12V system, 1400W in 24V system, 2800W in 48V system.