目的 改善目前国内低压电器在运输过程中破损率较高，且运输包装保护性较差的现状。方法 首先选择合适的包装材料对产品进行缓冲包装结构设计，使用Iron CAD对产品进行建模，随后导入PreSys进行缓冲包装结构前处理。生成K文件使用LS-DYNA进行求解，并利用LS-PosProt进行后处理，最后借助Matlab中曲线拟合工具箱进行曲线拟合。结果 该缓冲包装结构能够在塑壳式低压断路器跌落过程中吸收冲击，保证产品不受损坏。结论 低压断路器运输包装设计绿色环保且保护性能良好。

The work aims to improve the present situation of the high breakage rate of current domestic low-voltage electrical equipment in transportation process and the poor protection of transport packaging. Firstly, the appropriate packaging materials were selected to design a kind of cushioning packaging structure for the product. Iron CAD was used to model the product. Then, the product model was imported into PreSys for pre-processing of cushioning packaging structure. After the K file was generated, LS-DYNA was used to solve the problem. The post-processing was carried out by LS-PosProt. Finally, curve fitting was implemented with the curve fitting toolbox in Matlab. The cushioning package structure could absorb the impact in the drop process of the low-voltage molded case circuit breaker, so as to ensure that the product would not be damaged. The low-voltage circuit breaker transport packaging design is green and environmentally friendly, and has good protection performance.