In the process of the rapid development of information technology, electrical engineering automation technology has also been constantly developed, with the arrival of the new development pattern of electrical engineering automation technology, electrical engineering automation technology application scope has been constantly expanded. Through integration with other technologies, electrical engineering automation technology can be effectively applied in mechanical equipment transportation, regulation and management, so as to improve the production efficiency and production stability of mechanical equipment. In the field of electrical engineering, system operation is a very key link. In the process of system operation, automation technology as the basis of control technology, it can through the construction of automatic control system, the whole mechanical equipment electrical system for comprehensive monitoring. In the process of social development, the composition mode of mechanical equipment is constantly complex, and the automation control level of electrical engineering is also put forward higher requirements, including the flexibility and convenience in installation, use, production and debugging. The CNE, CDD, CP, C and other products in the connector, as well as the shell that can choose the IP protection level, various outlet ways and locking ways, can meet the needs of a variety of space and electrical connection.