AS/NZS 61558.2.16:2022 deals with the safety of switch mode power supply units and transformers for switch mode power supply units. This Standard will supersede AS/NZS 61558.2.16:2010 three years from the date of publication (i.e. on 24 June 2025). During this period AS/NZS 61558.2.16:2010 will also remain current. Regulatory authorities that reference this Standard in regulation may apply these requirements at a different time. Users of this Standard should consult with these authorities to confirm their requirements.