In power electronics wiring, connections between internal and external devices typically require specialized terminal blocks. These terminals connect the wiring between the internal and external devices, facilitating signal (current and voltage) transmission. Terminal blocks enhance aesthetically pleasing wiring, provide reliable connections when connecting long-distance lines, and facilitate installation and maintenance. In addition to providing standard mechanical and electrical properties, high-quality terminal blocks should also exhibit resistance to corrosion, aging, salt spray, and natural loosening. my country's standards for connector anti-aging requirements are as follows: Connectors must demonstrate aging resistance. Connectors whose insulating materials are not ceramic or thermoset must be tested in a ventilated heated chamber (box) with an atmosphere containing the composition and pressure of ambient air. The specimens must be stored in a heating chamber (box) for 7 days (168 hours). For unmarked connectors, the chamber temperature should be 70°C ± 2°C; for T-marked connectors, the chamber temperature should be (T + 30°C) ± 2°C. For example, if T = 85°C, the chamber temperature should be 115°C ± 2°C. After the above treatment, the specimens should be removed from the heating chamber and stored at room temperature for at least 4 hours. Without additional magnification, the specimens must show no cracks visible with normal or corrected vision, and the material must not be sticky or brittle. The test method is as follows: Place the specimen on one pan of a balance and add a weight equal to the mass of the specimen plus 500g to the other pan. Then, wrap your finger in a dry, coarse cloth and press on the specimen to restore the balance. After the test, the specimen must show no damage that would result in non-compliance with the requirements of this standard. Terminal blocks fall under the category of connectors, and their corresponding anti-aging standards should naturally align with the aforementioned national standards. With the vigorous implementation of national power reforms, requirements for terminal blocks are gradually increasing across various sectors, requiring purchasing personnel to strictly control the quality of terminal products when purchasing them. When purchasing terminal blocks, customers should purchase terminals that meet national standards and the requirements of testing agencies. It is especially important to avoid choosing terminals made from secondary processed materials due to price. Additives are required during the plastic encapsulation of insulating materials. If the sprue material is recycled, it already contains additives. If these additives are added during the plastic encapsulation process, the insulating material will inevitably not meet the requirements, and the anti-aging performance of the terminal will be greatly reduced.