The "lug" plug-in terminal block is also called screw reinforced plug-in terminal block. As the name suggests, screws and nuts for fixing are added at both ends of the conventional plug-in terminal block. Here, we analyze the function and practical significance of this type of terminal from the technical level

Since its inception, plug-in terminals have been favored by electrical engineers in various industries because of their stable wiring and simple and convenient maintenance in the later stage. It is also one of the most mature and widely used terminals so far. Its wide application is inseparable from its structural characteristics: the male and female sockets are used together to avoid the repeated use of screw crimping

However, with the continuous expansion of the application range of conventional plug-in terminals, the extreme electrical connection environment also puts forward more stringent requirements for the use of terminals. For example, in the non-static environment, the terminals used for electrical connection or signal communication have to meet the needs of the dynamic working environment, while the conventional plug-in terminals occasionally have poor contact or even fall off, which brings certain potential safety hazards to the system

In view of this, the connector technicians designed screw reinforced pluggable terminal blocks and added more stable screw reinforcement on the basis of fixing the clamping points of plastic parts, so as to avoid the above possible problems. Moreover, only adding fixing screws at both ends will not increase the workload of wiring