PSE Certification is a product safety certification system required by Japan's Electrical Appliance and Material Safety Law (Denan Law). PSE is the abbreviation for "Product Safety Electrical Appliance & Material" .This regulation is administered by Japan's Ministry of Economy, Trade and Industry (METI) to ensure the safety of electrical products and prevent accidents such as fires and electric shocks caused by electrical products. PSE Certification is a mandatory entry requirement for electrical supplies to enter the Japanese market.
Japan's electrical appliance safety management system began with the 1961 Electrical Appliance Control Law, which was revised in 2001 into the current Electrical Appliance and Material Safety Law (Denan Law). The regulations divide electrical supplies into two categories: "Specified Products" (116 kinds) and "Non-Specified Products" (341 kinds), corresponding to different Certification Modes and requirements.
Specified Products (such as power adapters, chargers, etc.) must pass Type Test and Factory Inspection by a registered certification body (RCAB), obtaining the Diamond PSE mark.Non-Specified Products can be certified through the manufacturer's self-declaration of conformity, obtaining the Circular PSE mark.The difficulty of obtaining the two marks is different from the legal effect, and the certification requirements for Diamond PSE are more stringent.
PSE Certification test standards are mainly based on the technical requirements of Japan's Electrical Appliance and Material Safety Law (J Standards), which are largely consistent with international IEC standards but include Japanese national differences (e.g., Rated Voltage100 V/200 V, frequency 50/60 Hz, plug specifications, etc.). Foreign manufacturers must designate an importer or authorized representative in Japan, who must register with METI before the product can be sold in the Japanese market.

