Array and Array Junction Box

We commonly use 72 Cell panels or 144 Half-Cut Cell Panels. A 72-cell panel produces 46-50 Volts while not under load. At maximum power point, it drops around 37-42 Volts. A standard On-grid Inverter requires a much higher voltage than this. Sometimes off-grid inverters also require multiple modules in series. 
A solar photovoltaic array is formed by a series/parallel combination of SPV modules to attain the desired voltage and current level. Usually in an Array modules are kept in series to obtain a certain voltage. Arrays are kept in parallel to increase the current.
Before connecting to the inverter sometimes protection is required (if it is not built in the inverter). Like DC Fuse, DC MCB, DC SPD and Current Measurement Unit. These are installed in an Array Junction Box or String Combiner Box. 

Reference:
[1] https://creativestudio1973.blogspot.com/2021/06/introduction-to-solar-panel.html
[2] https://creativestudio1973.blogspot.com/2021/06/on-grid-systems.html
[3] https://creativestudio1973.blogspot.com/2021/09/surge-protection-device.html
[4] https://creativestudio1973.blogspot.com/2023/11/dc-fuse-and-dc-mcb.html