EN IEC 60335-2-74:2026

• Abstract:

  The European standard deals with the safety of portable electric immersion heaters, their rated voltage voltage being not more than 250 V, for household and similar purposes.

• Status: Not Published
• Publication Date: 17-Dec-2026
• ICS: 13.120 - Domestic safety
• ICS: 97.040.50 - Small kitchen appliances
• Technical Committee: CLC/TC 61 - Safety of household and similar electrical appliances
• Drafting Committee: CLC/TC 61/WG 01 - Relation with standardization and legislation
• Current Stage: 5060 - Voting results sent to TC, SR - Formal Approval
• Start Date: 30-Oct-2026
• Due Date: 24-Nov-2026
• Completion Date: 30-Oct-2026
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive:

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  2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Directive:

  ---

  2014/55/EU - Directive 2014/55/EU of the European Parliament and of The Council of 16 April 2014 on Electronic Invoicing in Public Procurement
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Mandate: M/536 - [C(2015)536] Standardisation request as regards radio equipment in support of Directive 2014/53/EU
• Mandate: M/585 - standardisation request to the European Telecommunications Standards Institute as regards radio equipment in support of Directive 2014/53/EU of the European Parliament and of the Council in conjunction with Commission Delegated Regulation
• Ref Project: kSIST FprEN IEC 60335-2-74:2026 - Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters

• Amended By: EN IEC 60335-2-74:2026/A11:2026 - Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters
• Effective Date: 10-Sep-2024
• Revises: EN 60335-2-74:2003/A2:2009 - Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters
• Effective Date: 30-Jul-2024
• Revises: EN 60335-2-74:2003/A11:2018 - Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters
• Effective Date: 30-Jul-2024
• Revises: EN 60335-2-74:2003 - Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters
• Effective Date: 30-Jul-2024
• Revises: EN 60335-2-74:2003/A1:2006 - Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters
• Effective Date: 30-Jul-2024

EN IEC 60335-2-74:2026 is the CLC European draft standard for the safety of portable electric immersion heaters with a rated voltage not more than 250 V for household and similar purposes. It sets particular safety requirements for this product family and is used together with the general requirements in Part 1 for household and similar electrical appliances.

What does EN IEC 60335-2-74:2026 specify?

EN IEC 60335-2-74:2026 covers the safety of portable immersion heaters used in homes and similar places. It also extends to appliances used by laymen in settings such as shops, light industry and farms when they can still present a public safety risk.

The document follows the Part 1 structure and then replaces or adds product-specific requirements in clauses such as 5, 6, 7, 11, 19, 21, 24, 25 and 30. The annexes of Part 1 apply.

What are the key requirements of EN IEC 60335-2-74:2026?

EN IEC 60335-2-74:2026 focuses on immersion safety, user information, abnormal operation, mechanical strength and construction details that affect live parts, overheating and fire risk.

• Clause 5.3 - The additional mechanical test in 21.1 is performed before the Clause 8 tests. In practice, this sets the test sequence so damage from impact is checked early.
• Clause 6.2 - Immersion heaters shall be at least IPX7. That means the design must withstand immersion exposure at the specified protection level.
• Clause 7.1 and 7.12 - Appliances other than floating types shall be marked with the minimum and maximum depths of immersion, and the instructions shall explain suitable vessels, unplugging before removal, residual heat, and that the appliance is not to be used with an external timer or separate remote-control system. This helps users place the heater correctly and avoid burns or unsafe use.
• Clause 11.7 - The heater is operated for 15 min after the water reaches 95 °C, or after the water stabilizes, or after a thermal control operates if 95 °C cannot be reached. This checks heating behavior under realistic end-of-heating conditions.
• Clause 19 - Special abnormal-operation tests apply only to appliances for preventing freezing in animal troughs and to appliances that maintain a liquid at a set temperature. The test corner position and the 200 K first-minute temperature rise limit define how severe overheating is assessed.
• Clause 21.1 - The appliance is dropped from 1 m onto a hardwood board four times, including on the handle and on the end of the heating element. This checks whether impact can create unsafe damage.
• Clause 24.101 and 25.5 - Thermal cut-outs used for Clause 19 compliance shall not be self-resetting, and the appliance shall not use type X attachments while type Z attachment is allowed. In practice, this controls restart behavior and cord replacement expectations.
• Clause 30.2 - Different heat-and-fire subclauses apply depending on whether the appliance is for animal-trough freezing prevention, set-temperature liquid maintenance, remote operation, or normal use. That tailors fire resistance testing to the actual duty of the appliance.

What terms does EN IEC 60335-2-74:2026 define?

• Portable immersion heater - A portable electric appliance intended to heat liquid by immersion, covered here only for household and similar purposes.
• Part 1 - IEC 60335-1, the general safety standard that this Part 2 document supplements and modifies.
• IPX7 - The enclosure protection level required by this document for immersion heaters, indicating protection against immersion exposure at that level.
• Minimum depth of immersion - The lowest water depth at which the heater is intended to operate safely, and the basis for the replacement definition in Clause 3.
• Type X attachment - A cord attachment arrangement not permitted for these appliances.
• Type Z attachment - A cord attachment arrangement that is permitted for these appliances.
• Thermal cut-out - A temperature-operated protective device used to limit overheating; here it shall not be self-resetting when used for Clause 19 compliance.

Who uses EN IEC 60335-2-74:2026?

EN IEC 60335-2-74:2026 is used by appliance designers, manufacturers, test laboratories, certification bodies, importers and quality managers working with portable immersion heaters. It is also relevant to buyers and compliance teams specifying safety requirements for household appliances and small kitchen appliances.

It matters most for organizations that need to design the product, mark immersion limits, write user instructions, run safety tests, or assess conformity before placing the heater on the market.

What changed in EN IEC 60335-2-74:2026 from the previous edition?

EN IEC 60335-2-74:2026 supersedes EN 60335-2-74:2003 and its amendments and corrigenda. The underlying IEC text states three significant technical changes compared with the previous edition: alignment with IEC 60335-1:2020, conversion of some notes into normative text, and added requirements for appliances that maintain a liquid at a set temperature.

Which standards are used with EN IEC 60335-2-74:2026?

Standard	What it contributes
IEC 60335-1	The general safety requirements that this Part 2 modifies and supplements.
prEN IEC 60335-2-74:2026/prAA:2026	The companion draft referenced in the European foreword and read together with this document.
IEC 60335-2-15	Related safety requirements for appliances for heating liquids.
IEC 60335-2-55	Related safety requirements for electrical appliances for use with aquariums and garden ponds.
IEC 60335-2-73	Related safety requirements for fixed immersion heaters.
IEC 60364	Wiring rules used as the compatibility basis mentioned in the introduction.

What does the EN IEC 60335-2-74:2026 document contain?

EN IEC 60335-2-74:2026 contains the full clause structure from Scope through Clause 32, with product-specific additions and replacements where needed for portable immersion heaters. The technical core is made up of safety tests and construction requirements rather than performance data.

It includes the marked immersion-depth requirement, the heating test in Clause 11, the abnormal-operation tests in Clause 19, the 1 m drop test in Clause 21, and the thermal cut-out requirement in Clause 24. The annexes of Part 1 also apply, so the document is intended to be read as a Part 2 companion to the general standard.

SLOVENSKI STANDARD
oSIST prEN IEC 60335-2-74:2026
01-junij-2026
Gospodinjski in podobni električni aparati - Varnost - 2-74. del: Posebne zahteve
za prenosne potopne grelnike
Household and similar electrical appliances - Safety - Part 2-74: Particular requirements
for portable immersion heaters
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-74:
Besondere Anforderungen für ortsveränderliche Tauchheizgeräte
Appareils électrodomestiques et analogues - Sécurité - Partie 2-74: Exigences
particulières pour les thermoplongeurs mobiles
Ta slovenski standard je istoveten z: prEN IEC 60335-2-74:2026
ICS:
13.120 Varnost na domu Domestic safety
97.040.50 Majhni gospodinjski aparati Small kitchen appliances
oSIST prEN IEC 60335-2-74:2026 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60335-2-74:2026

oSIST prEN IEC 60335-2-74:2026

EUROPEAN STANDARD DRAFT
prEN IEC 60335-2-74
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2026
ICS 13.120; 97.040.50 Will supersede EN 60335-2-74:2003; EN 60335-2-
74:2003/A1:2006; EN 60335-2-74:2003/A2:2009; EN
60335-2-74:2003/A11:2018
English Version
Household and similar electrical appliances - Safety - Part 2-74:
Particular requirements for portable immersion heaters
(IEC 60335-2-74:2021)
Appareils électrodomestiques et analogues - Sécurité - Sicherheit elektrischer Geräte für den Hausgebrauch und
Partie 2-74: Exigences particulières pour les ähnliche Zwecke - Teil 2-74: Besondere Anforderungen für
thermoplongeurs mobiles ortsveränderliche Tauchheizgeräte
(IEC 60335-2-74:2021) (IEC 60335-2-74:2021)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-07-10.

The text of this draft consists of the text of IEC 60335-2-74:2021.

If this draft becomes a European Standard, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CENELEC in three official versions (English, French, German).
A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to
the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 80441 Ref. No. prEN IEC 60335-2-74:2026 E

oSIST prEN IEC 60335-2-74:2026
prEN IEC 60335-2-74:2026 (E)
European foreword
This document (prEN IEC 60335-2-74:2026) consists of the text of document IEC 60335-2-74:2021,
prepared by IEC/TC 61 "Safety of household and similar electrical appliances".
This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this document (doa) dav + 6 months
has to be announced at national level
• latest date by which this document has to be (dop) dav + 12 months
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) dav + 36 months
conflicting with this document have to be withdrawn (to be confirmed or
modified when voting)
This document will supersede EN 60335-2-74:2003 and all of its amendments and corrigenda (if any).
This document is read in conjunction with prEN IEC 60335-2-74:2026/prAA:2026.

oSIST prEN IEC 60335-2-74:2026
IEC 60335-2-74 ®
Edition 3.0 2021-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-74: Particular requirements for portable immersion heaters
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-74: Exigences particulières pour les thermoplongeurs mobiles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 97.040.50 ISBN 978-2-8322-4112-7
oSIST prEN IEC 60335-2-74:2026
– 2 – IEC 60335-2-74:2021 © IEC 2021
CONTENTS
FOREWORD. 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General requirement . 8
5 General conditions for the tests . 8
6 Classification . 8
7 Marking and instructions . 8
8 Protection against access to live parts . 8
9 Starting of motor-operated appliances . 9
10 Power input and current . 9
11 Heating . 9
12 Charging of metal-ion batteries . 9
13 Leakage current and electric strength at operating temperature . 9
14 Transient overvoltages . 9
15 Moisture resistance . 9
16 Leakage current and electric strength. 9
17 Overload protection of transformers and associated circuits. 9
18 Endurance . 9
19 Abnormal operation . 10
20 Stability and mechanical hazards . 10
21 Mechanical strength . 10
22 Construction . 10
23 Internal wiring . 10
24 Components . 10
25 Supply connection and external flexible cords . 11
26 Terminals for external conductors . 11
27 Provision for earthing . 11
28 Screws and connections . 11
29 Clearances, creepage distances and solid insulation . 11
30 Resistance to heat and fire . 11
31 Resistance to rusting . 11
32 Radiation, toxicity and similar hazards . 11
Annexes . 12
Bibliography . 13

oSIST prEN IEC 60335-2-74:2026
IEC 60335-2-74:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 2-74: Particular requirements for portable immersion heaters

FOREWORD
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 60335-2-74 has been prepared by IEC technical committee 61: Safety of household and
similar electrical appliances. It is an International Standard.
This third edition cancels and replaces the second edition published in 2002, Amendment 1:
2006 and Amendment 2:2009. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the text has been aligned with IEC 60335-1:2020;
b) some notes have been converted to normative text (Clause 1, 7.1);
c) requirements for appliances that maintain a liquid at a set temperature are added (19.1,
30.2).
oSIST prEN IEC 60335-2-74:2026
– 4 – IEC 60335-2-74:2021 © IEC 2021
The text of this International Standard is based on the following documents:
Draft Report on voting
61/6172/CDV 61/6293/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard
...