In the 3-phase distribution box, the MCCB is used as the main switch. Only Line terminals go through the MCBs. RCCB. The three-level distribution system refers to a system that distributes electric power through three levels of distribution devices from the incoming power line at the construction site to the electrical equipment. 4kV), power distribution is achieved through three levels of distribution boxes: the main distribution board, secondary. power delivery infrastructure that takes the electricity from the highly meshed, high-volta incoming transmission-level voltage (35 to 230 kV) and steps it down to several distribution primary dized substation lay- outs, transformer sizes, relaying systems, and automation and S y function of a. The three-phase distribution board is used to distribute power to the three-phase loads and circuits such as three-phase motors, three-phase machinery, three-phase to single-phase distribution boards, etc. Click on “Contents” at the top to view the contents page.
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