On July 31st, 2025, the fourth edition (Edition 4) of UL 62368-1 was officially released, which is of great significance to manufacturers in related industries. For enterprises that are interested in applying for this version of certification, now is the right time to start preparing. At the same time, considering that the certification process involves many links and has corresponding time requirements, enterprises planning to apply for the fourth edition certification are advised to start the relevant processes as soon as possible to ensure the smooth progress of the follow-up work.

Major technical changes in the new version of the standard

As early as May 26th, 2023, IEC 62368-1:2023 Edition 4 was officially published, among which the 4th and 3rd editions have the following important updates:

★ Components or assemblies certified by IEC 60950-1 and IEC 60065 are no longer accepted in the fourth edition;

★ Details of test requirements for equipment including button cell have been updated;

★ M.4 Additional safeguards for equipment containing a portable secondary。 (In the fourth edition, portable is deleted, which means that the requirements of M.4 are also applicable to non-portable battery products, and the test range is expanded. )

Product scope covered by standard update

The update of IEC 62368-1 has a wide range of influences, mainly covering products in the following key areas:

★ Electronic and electrical equipment

★ Audio and video products

★ Information technology products

★ Commercial office automation equipment not exceeding 600V V.

★ Power products

★ server

★ display

★ TV

★ Notebooks, personal computers and peripheral products, etc.

Warm tips

With the official release of the fourth edition (Edition 4) of UL 62368-1, the related products in the American market will be deeply affected. ZRLK suggested that the corresponding enterprises should improve their product risk awareness and do a good job in product planning and design in advance to ensure the smooth convergence of new standards and avoid unnecessary trade losses. Our company has a professional technical team and rich experience in product testing, which can help enterprises enter the target market in compliance with regulations. If you need it, please feel free to contact us, and our engineers will serve you at the first time!