Japan is a key market for many 3C and appliance exports, but PSE certification is often oversimplified as "just apply a mark." In reality, Japan's classification system for electrical products is entirely different from the EU or US, and getting the classification wrong can send you down the wrong compliance path entirely. Here's the regulatory basis, the difference between the two marks, and the actual testing requirements.
What PSE Certification Is, and Its Regulatory Basis
PSE (Product Safety Electrical Appliance and Material) certification is implemented under Japan's Electrical Appliance and Material Safety Law (Denki Anzen Ho), administered by Japan's Ministry of Economy, Trade and Industry (METI). The law requires electrical and electronic products sold in Japan to complete the applicable compliance procedure and carry the PSE mark before they can be legally sold. Unlike CE's largely self-declared approach, PSE divides products into two categories with entirely different risk levels, each following its own compliance path.
Specified vs. Non-Specified Electrical Appliances: Diamond vs. Circle Mark
- Specified Electrical Appliances: the higher-risk category, currently covering roughly 116 designated items in the published list, including power cords, plugs, certain batteries, and certain small appliances. These products must complete type testing and certification through a registered Japanese testing body (登録検査機関), and manufacturers must also establish and retain factory inspection records. The mark is the diamond PSE (◇ with "PSE" inside)
- Non-Specified Electrical Appliances: the relatively lower-risk category, currently covering roughly 341 items in the published list, with broader coverage including most consumer electronics, lighting, and office equipment. For these, manufacturers are permitted to self-test against the applicable JIS or related standards and retain their own test records, with no mandatory third-party certification body involved. The mark is the circle PSE (○ with "PSE" inside)
The compliance workload required for the two marks differs substantially — even though both are described as "passing PSE," Specified appliances involve a notably longer and costlier certification path than Non-Specified ones. So the first step is always to accurately determine which category the product falls into; getting this wrong can mean discovering you're on the wrong compliance path right before launch.
Testing Standards
Actual testing is generally based on the relevant standards within Japan's JIS (Japanese Industrial Standards) system, commonly including:
- JIS C 8303: the structure and performance standard for plugs and receptacles
- JIS C 62368-1: the safety standard for audio/video and information technology equipment, broadly aligned with the international IEC 62368-1, and the primary basis for consumer electronics
- JIS C 9335 series: the safety standard for household appliances, aligned with the international IEC 60335 series — the specific applicable sub-part depends on the exact product category
Testing Process (Using Specified Electrical Appliances as an Example)
- Confirm whether the product falls under the 116-item Specified Electrical Appliance list, and identify the applicable JIS clause
- Submit samples to a registered testing body (登録検査機関) for type testing
- Upon passing, obtain the inspection record (検査記録) as part of the PSE compliance documentation
- The manufacturer must establish and maintain a factory inspection system (self-inspection regime) to ensure mass-produced units match the submitted samples
- Once all of the above is complete, the diamond PSE mark can be applied and the product placed on the market
Cost and Timeline Reference (for budget planning only, not a quote)
Actual cost varies enormously by product category and risk tier. The following ranges are for rough budget planning only:
- Non-Specified Electrical Appliances (circle PSE, self-tested): if the company has in-house testing capability or commissions a lab for a test report, typically 2-4 weeks, with no certification-body issuance step required
- Specified Electrical Appliances (diamond PSE, requiring third-party certification): typically 6-10 weeks, depending on product complexity and the registered testing body's scheduling
- Specified appliances containing lithium batteries: additional battery safety testing can extend the timeline further, to about 10-14 weeks
For an accurate quote, provide the product category and any existing test data against JIS or the corresponding IEC standards — test results that already satisfy IEC 62368-1 or the IEC 60335 series can often serve as reference for PSE testing, shortening the overall timeline to some degree.
Frequently Asked Questions
Q: I'm not sure whether my product is Specified or Non-Specified — what should I do? A: Check METI's current published item list directly, or provide the product's functional description and electrical structure to a specialist for classification help, since some category boundaries aren't intuitive (for example, similar products can fall into different categories depending on voltage or power range).
Q: I already have CE or UL — can that exempt my product from PSE testing? A: No. PSE is an independent mandatory requirement under Japan's own regulatory system, and certification results from other markets (CE, UL, etc.) cannot substitute for it — though the underlying test reports can serve as reference to help assess whether the product already meets part of PSE's technical requirements.
Q: For circle PSE products, is third-party testing completely unnecessary? A: The law permits manufacturers to self-test and retain their own records, but many companies still choose to commission a third-party lab for a test report as compliance-risk-management documentation when exporting to Japan.
If your product is headed for the Japanese market, send us its category, voltage parameters, and whether it contains a battery, and we can help determine which PSE category applies before giving you a specific testing plan and cost/timeline estimate.