The application of power terminals in electronic equipment has become a trend, and the power terminal devices themselves are gradually increasing and can carry power. As the size of the terminal blocks becomes larger, their importance in the function of the equipment has become more prominent, and they have also played an increasingly important role in terms of product features.
The continuous improvement of the circuit board technology has increased the current that the terminal installed on the panel can carry. It has broken through the 110A limit and far exceeded the level of the previous product. This makes what kind of power connection to use in the design process The problem that the terminal can meet the system requirements becomes complicated. In addition, the methods of measuring performance parameters are different in different regions, and even the nominal parameters given for the same product are quite different. Therefore, it is very important to understand these differences in order to achieve long-term and low cost.
Engineers also consider another factor that is often overlooked, namely marketing considerations. Usually, the terminal is visible to the user, so the marketing department often hopes that the appearance of the product can match the color and style of the entire system.

The following specifically introduces the important factors that affect the selection of wiring terminals.
Appearance factors
Although the name "power terminal" does not sound pretty, many companies believe that it plays an important role in product appearance and user affinity. Power terminal blocks are convenient for field installation because they are often installed on the front end of the product panel that is easy to see. In this way, marketers often want to have a say in the appearance of power terminal products. But often encounter this situation: the product designed by the engineer meets the requirements of the mechanical and electrical parameters, but has to be changed because it does not meet the sales requirements. If this happens later in the design cycle (often when the marketing department sees the prototype for the second time), then a fierce debate is unavoidable and may lead to increased costs and delayed delivery. In many industrial control systems, wiring terminals are often one of the few components that technicians need to pay special attention to. Although its user interface is relatively simple (mainly screws), it is very important for the normal operation of the device.
In general, as the current increases, the wires become thicker, and the torque required to fasten these thick wires to the terminals also needs to increase. Therefore, the power terminal requires screws and a more insulating shell. Sometimes small screws are used to save space. This is often the case in very compact terminal products. Some wires are more than 1/4 inch in diameter, so these small screws are difficult to deal with. When technicians and maintenance personnel need to install multiple wires, using large enough screws to simplify the wiring work can save time.