在低压配电系统中现有电涌保护器结构大多采用模块式插拔式结构，由模块组件插入方式与底座固定在一起;由于电涌保护器底座与模块组件的结构原因造成如需更换模块组件很难拔出，若已经安装在配电系统中的电涌保护器需更换模块组件，因模块组件较难拔出，且容易产生操作上的失误，而造成电涌保护器损坏或人身伤害，因拔出困难，大多需要更换模块组件时，都是更换整套电涌保护器，造成用户时间与成本的浪费。

In the low-voltage distribution system, most of the current surge protector structures adopt the modular plug structure, which is fixed together with the base by the insertion mode of module components. Surge protector as the base and the structure of the module components causes such as the need to change the module components are dificult to pull out, if you have installed in the surge protector in the distribution system to replace the module components, because of the module components are harder to pull out, and prone to errors in operation, and cause surge protector damage or personal injury, because of the pull out dificult, most need to replace the module components, is to replace the whole surge protector, resulting in wasted user time and cost.