oSIST prEN IEC 60335-2-73:2026/oprAA:2026

oSIST prEN IEC 60335-2-73:2026/oprAA:2026 is a CENELEC draft amendment to the Household and similar electrical appliances - Safety series, Part 2-73, for fixed immersion heaters. It is read with prEN IEC 60335-2-73:2026 and the Part 1 general requirements. The document updates safety wording, user instructions, heating-related text, and the annexes that support conformity work.

What does oSIST prEN IEC 60335-2-73:2026/oprAA:2026 specify?

oSIST prEN IEC 60335-2-73:2026/oprAA:2026 modifies the base Part 2-73 text rather than replacing it. It focuses on how the European safety requirements are expressed, especially for hazards in and around the home, and it states that routine tests are not covered.

The amendment is organized as changes to the Introduction, Clause 1, Clause 2, Clause 7, Clause 11, the annexes, and the Bibliography. It also says it is drawn up by CLC/TC 61 and is currently in enquiry.

What are the key requirements of oSIST prEN IEC 60335-2-73:2026/oprAA:2026?

The main effect of oSIST prEN IEC 60335-2-73:2026/oprAA:2026 is to tighten the safety text that manufacturers, test labs, and compliance teams must use. The important points are in the clauses that affect scope, instructions, heating tests, and referenced publications.

• Clause 1 rewrites the scope to cover reasonably foreseeable hazards for people and domestic animals in and around the home. In practice, the safety assessment has to reflect normal domestic exposure, not just technical use.
• Clause 2 adds EN IEC 60335-1:2023 as a normative reference. That means the general Part 1 safety rules remain the base for this part.
• The foreword says the document contains requirements for appliances with radio function, remote communication, and remote operation. If a product has those features, its safety documentation has to treat them as part of the appliance.
• Clause 7.12 requires instructions to say that people with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, may use the appliance only with supervision or instruction, that children from 8 years may use it only if continuously supervised, and that children under 8 and domestic animals must be kept away. It also forbids cleaning and user maintenance by children.
• Clause 11.3 removes the sentence allowing any measuring instrument that gives the same results as the probe. For testing, that means the specified method must be followed as written.
• Annex ZA updates the reference list, including EN IEC 60335-1:2023 and EN 60584-1 for thermocouple EMF specifications and tolerances. That matters when preparing test reports and technical files.
• Annexes ZZA, ZZB, and ZZC from Part 1 are not applicable here. This draft amendment therefore does not use those annexes for the listed EU-directive relationships.

What terms does oSIST prEN IEC 60335-2-73:2026/oprAA:2026 define?

• prAA - a draft amendment that changes an existing European draft standard before approval.
• CLC/TC 61 - the CENELEC technical committee responsible for safety of household and similar electrical appliances.
• EN IEC 60335-1:2023 - the general safety requirements for household and similar electrical appliances used as the base Part 1.
• radio appliance - the term used here with the same meaning as radio equipment.
• appliance - the term used here with the same meaning as equipment.
• domestic animals - animals encountered in and around the home and explicitly included in the scope wording.
• routine tests - tests the foreword says are not covered by this standard.

Who uses oSIST prEN IEC 60335-2-73:2026/oprAA:2026?

Manufacturers of household and similar electrical appliances use this amendment when writing safety instructions and building the technical file for fixed immersion heaters. Test laboratories, certification bodies, and compliance engineers use it to check heating behavior, marking, and the wording of user information.

It is also relevant to product safety teams, importers, and buyers who need to confirm that the appliance text matches the European safety series and its Part 1 base requirements.

What changed in oSIST prEN IEC 60335-2-73:2026/oprAA:2026 from the previous edition?

The foreword says this draft amendment modifies prEN IEC 60335-2-73:2026 and all of its amendments and corrigenda. It states two significant technical modifications: new instructions relating to children, people with disabilities, and domestic animals, and the note that routine tests are not covered.

It also states that, with European Amendment A11, EN 60335-2-73:2003+A1:2006+A2:2009+A11:2021 is superseded.

Which standards are used with oSIST prEN IEC 60335-2-73:2026/oprAA:2026?

• prEN IEC 60335-2-73:2026 - the base Part 2-73 text that this amendment modifies.
• EN IEC 60335-1:2023 - the Part 1 general requirements used as the safety foundation.
• EN IEC 60335-1:2023/A11:2023 and EN IEC 60335-1:2023/FprAB:2025 - noted as affecting Clause 7.12.
• IEC 60584-1 / EN 60584-1 - thermocouple EMF specifications and tolerances referenced in Annex ZA.

What does the oSIST prEN IEC 60335-2-73:2026/oprAA:2026 document contain?

This draft amendment contains a foreword, a contents page, and a set of targeted modifications rather than a full standalone standard. The main text changes are grouped by clause, so readers can see exactly where the base Part 2-73 text is being updated.

Annex ZA provides the European publication reference table. Annexes ZZA, ZZB, and ZZC carry the directive-relationship headings from Part 1 but are marked not applicable here.

The Bibliography is expanded with IEC 60335-2-15, IEC 60335-2-21, IEC 60335-2-35, IEC 60335-2-55, IEC 60335-2-74, and ISO 13732-1.