DC Combiner Box manufacturers Onesto Solar Combiner Box is a box that combines pv arrays, inverters and other auxiliary devices for easier installation and maintenance. It is an indispensable part of the photovoltaic power station. 1.Durable metal lock for antitheft 2.Fixing bracket for external wall mounting 3.Work with both on-grid and off-grid inverter 4.Cable glands avaible for easy cable...