Lighting small power distribution units and lighting distribution panels are both components used in power distribution systems, but there are some differences between them:

1. Function: The main function of lighting small power distribution unit and lighting distribution board is to distribute electric energy to lighting equipment, but their specific functions are slightly different. The lighting small power distribution unit is usually a complete independent system, including main switch, shunt switch, fuse, leakage protector and other components, used to control current and protect electrical equipment. The lighting distribution board usually only includes components such as shunt switches and fuses, and is mainly used to control and distribute lighting circuits.

2. Capacity: The capacity of the lighting small power distribution unit is usually large and can support more electrical equipment and circuits, while the capacity of the lighting distribution board is small and can only support a small number of electrical equipment and circuits.

3. Installation location: Lighting small power distribution units are usually installed in the main power distribution room of large buildings, while lighting distribution boards are installed in smaller areas, such as corridors, toilets, etc.

In general, both lighting small power distribution units and lighting distribution boards are devices for controlling and distributing lighting circuits, but they differ in function, capacity, and installation location. According to actual needs, it is very important to choose suitable power distribution equipment.