PSE certification (Product Safety of Electrical Appliance&Materials) is a market access system implemented by the Japanese government for electronic and electrical products, and is an important content of the Japanese Electrical Product Safety Law (DENAN). PSE is managed by METI (Japan's Ministry of Economy, Trade and Industry), which does not directly issue certificates, but authorizes third-party certification agencies to conduct product conformity assessment testing and issue certificates.

Class A PSE specific electrical appliance scope: wires and cables, fuses, wiring appliances (electrical accessories, lighting appliances, etc.), current limiters, transformers, ballast electric heating appliances, electric power application machinery appliances (household appliances), electronic application machinery appliances, other AC electrical machinery appliances (electric shock insecticides, DC power supply devices), portable engines;

Class B Japan Non specific Electrical PSE Scope: Japanese circular PSE logo products. For products that fall under the "Non specific Electrical Products" category, entering the Japanese market, they must undergo testing by a laboratory recognized by the Japanese Ministry of Economy, Industry, and Industry to confirm compliance with the technical standards of Japanese electrical products. Only after obtaining a qualified test report PSE certificate can the PSE circular logo be affixed to the products before they can be sold in the Japanese market. Non specific electrical appliances include transformers, ballasts, small AC motors, electric heating appliances, mechanical appliances for power applications, and mechanical appliances for light sources.