The heavy-duty connector has the advantages of small size, compact structure, excellent performance, reliability, strong safety, environmental protection, power saving, no radiation, and no noise in structure, material use and function. It has outstanding electrical performance. The reliability of the electrical connection system is beyond the reach of traditional connection methods. Advantages: 1. Realizing the pre-installation of a large number of and complex circuits in advance can greatly improve the efficiency of equipment installation and reduce the rate of wiring errors. 2. Highly integrated connection is provided for heavy load connection to realize the combination mode to maximize the effective utilization of equipment space.