The box in the boxplot represents the interquartile range (IQR), which is a measure of the spread of the data. A distribution box is a key part of electrical systems in buildings. It provides convenience for protection, control and maintenance. This article discusses the construction of the distribution box, its functional divisions. The distribution box is a device for power distribution and control, and its internal structure includes main circuit breakers, fuses, contactors, etc. The main circuit breaker is used to disconnect and connect the main power supply, and protect the circuit from faults such as overload and short. “Distribution box”, also called distribution cabinet, is the collective name of the motor control center. It helps electricity move safely to different circuits, ensuring that power is utilized efficiently.