The application of power terminals in electronic equipment has become a trend, and the power terminal devices themselves are gradually increasing, and the power that can be carried. As terminal blocks get larger, they become more important in device functionality and play an increasingly important role in product features.
The ever-improving circuit board technology has allowed the panel-mounted terminals to carry much higher currents, now breaking the 110A limit, far exceeding the level of previous products, making it difficult to determine which power wiring to use in the design process. The question of how many terminals can meet system requirements is 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 obtain long-term and low-cost.

Engineers also consider another factor that is often overlooked, namely marketing considerations. Often, terminals are visible to the user, so marketing departments often want the product to match the color and style of the overall system in terms of appearance.
The following is a detailed introduction to the important factors that affect the selection of wiring terminals.
1. Appearance factor
Although the name "power terminal block" may not sound pretty, many companies believe that it plays an important role in the appearance and user-friendliness of the product. Power terminal blocks are easy to install in the field, as they are often installed on the front of the product panel where it is easy to see. As such, marketers often want to have a say in the appearance of power terminal block products.
2. Power Handling Factors
One of the first factors to consider is the power handling capability of the device. Simply reading the data sheet does not yield accurate comparative data. Engineers understand how the product performance data listed in the manual is determined by testing. Currently, agencies such as UL, IEC, CSA, and DIN do not have uniform standards for determining the power and performance specifications of terminal block products. Users need to understand the differences between UL and IEC specifications. Specifications for terminal block products manufactured in Europe follow IEC standards, while products manufactured in the United States follow UL standards.
The difference between the two standards is huge. Engineers who do not know how to measure product specifications take considerable risks because they may select devices that do not meet the required power levels, or that select devices whose specifications are far beyond the design requirements. In Europe, the current rating of a device is determined by monitoring the temperature of the metal conductor as the current increases.