The main differences between exposed and concealed distribution boxes lie in the installation methods, appearance and requirements for the box structure. The basic functions of the internal electrical components are usually not essentially different.

Exposed assembly electrical boxes are directly fixed to the wall surface. They are easy to install, have a fast construction speed, and are also convenient for later maintenance and component replacement. They are suitable for industrial plants, workshops, basements, outdoor areas and other places. The box body usually has a relatively obvious depth, with relatively sufficient internal space, which is convenient for installing circuit breakers, leakage protection devices, terminal blocks, busbars and other components. At the same time, the operation of incoming and outgoing lines is relatively convenient.

Concealed assembly electrical boxes require reserving or grooving in the wall in advance, embedding the main body of the box into the wall, with only the door frame and the box door exposed outside the wall. Therefore, the overall appearance is more aesthetically pleasing and is often used in places with high requirements for decoration effects, such as residences, office buildings, and shopping malls. Due to the limited space inside the wall, concealed box bodies usually have stricter requirements for the depth of the box body, installation dimensions and component layout.

Overall, the internal electrical functions are basically the same, with the main differences lying in the box structure and installation space. Exposed installation places more emphasis on convenient installation, easy maintenance and internal space. Concealed installation places more emphasis on aesthetics, saving wall space and coordination with architectural decoration.