The difference between DC combiner boxes and AC combiner boxes

The main differences between AC combiner boxes and Dc Combiner boxes are as follows: 

Current type: 

AC combiner box: Specifically designed for handling alternating current, which is a type of current where the direction changes periodically over time.
DC combiner box: Specifically designed for handling direct current, which is a type of current where the direction remains constant.
Internal configuration: 

AC combiner box: It is internally equipped with input circuit breakers, output circuit breakers, and AC lightning arresters, etc. These configurations are mainly to cope with the characteristics of AC and ensure the safety of the circuit. Additionally, it can be optionally equipped with intelligent monitoring instruments to monitor system voltage, current, power, energy and other signals.
DC combiner box: Although it may also contain basic configurations such as input and output circuit breakers and lightning arresters, its design is more focused on adapting to the characteristics of DC.
Main functions: 

The AC combiner box: Its main function is to converge the output currents from multiple inverters and protect the inverters from hazards coming from the AC grid side or the load. As the disconnection point of the inverter output, it enhances the system's safety and protects the safety of installation and maintenance personnel.
The DC combiner box: Although it also has the function of convergence, its specific application scenarios and functions may vary depending on the system, but it also emphasizes the protection of the circuit and safety.
In summary, the AC combiner box and the DC combiner box have significant differences in current type, internal configuration, and main functions. The choice of which combiner box to use depends on the specific power system and application requirements.