PSE（Product Safety of Electrical Appliance & Materials) certification (Japanese referred to as "suitability inspection") is a compulsory market access system for Japanese electrical appliances, which is an important content stipulated in the electrical appliances Safety Law of Japan. The electrical appliances are divided into "specific electrical appliances" and "non specific electrical appliances", among which "specific electrical appliances" includes 116 products and "non specific electrical appliances" includes 341 products Products, technical requirements including EMC and security.

All products in the catalogue of "specific electrical products" must be certified by a third-party certification agency authorized by the Ministry of economy and industry of Japan, obtain the certification certificate, and affix the diamond PSE mark on the nameplate. As shown in the figure below:



As for the products in the "non specific electrical products" catalogue, when entering the Japanese market, self-test and self declaration shall be carried out to confirm that they conform to the technical standards of Japanese electrical products, and a circular PSE mark shall be pasted on the nameplate, as shown in the following figure:



The typical class a products are: switching power supply, common it equipment, audio and video products, etc.

Typical class B products include: simple wiring sleeve and junction box; simple single-phase motor between 100V and 300V; household electric heating products; household electric or video game products; civil or household products using light source; household and commercial electronic products; other electrical products between 100V and 300V..