kSIST FprEN IEC 60335-2-74:2026
(Main)Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters
- 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
- Public Enquiry End Date
- 29-Jun-2026
- Technical Committee
- VGA - Safety of household and similar electrical appliances
- Current Stage
- 5020 - Formal vote (FV) (Adopted Project)
- Start Date
- 10-Sep-2026
- Due Date
- 29-Oct-2026
- Completion Date
- 10-Sep-2026
kSIST FprEN IEC 60335-2-74:2026 is a CENELEC draft European standard for the safety of portable electric immersion heaters. It specifies particular safety requirements for household and similar purposes, for appliances with a rated voltage of not more than 250 V. In practice, it is the document manufacturers, test labs, and buyers use to check whether a portable immersion heater is built, marked, and tested for this product group.
What does kSIST FprEN IEC 60335-2-74:2026 specify?
kSIST FprEN IEC 60335-2-74:2026 specifies safety requirements for portable electric immersion heaters used in household and similar applications. The scope also covers appliances used by laymen in shops, light industry, and farms when they can present a danger to the public.
The document is organized as a Part 2 standard with Clauses 1 to 32, followed by annexes and a bibliography. The annexes of Part 1 apply, and the document is read together with prEN IEC 60335-2-74:2026/prAA:2026.
The scope excludes several other appliance types and use cases, including industrial-only equipment, special-atmosphere locations, heating elements in portable liquid-heating appliances, aquarium heaters, fixed immersion heaters, and battery-operated appliances.
What are the key requirements of kSIST FprEN IEC 60335-2-74:2026?
kSIST FprEN IEC 60335-2-74:2026 mainly adapts the general safety rules of IEC 60335-1 to portable immersion heaters. The most important points concern immersion depth, ingress protection, marking and instructions, heating tests, abnormal operation, mechanical strength, and construction.
Immersion and protection
Clause 3.1.9 defines replacement as operation of the appliance in a vessel filled with water to the minimum depth of immersion. Clause 6.2 requires immersion heaters to be at least IPX7. In practice, this means the heater must be suitable for use in liquid and the chosen enclosure protection matters in product design and testing.
Marking and instructions
Clause 7.1 requires appliances other than those intended to float to be marked with the maximum and minimum depths of immersion, and those depths may be shown by lines only. Clause 7.12 requires instructions to cover the suitable vessel, unplugging before removal from the liquid, the hot heating element after unplugging, and the fact that the appliance is not intended to be operated by an external timer or separate remote-control system. For a buyer or quality manager, this is the information that must appear on the product and in the user literature.
Heating and abnormal operation
Clause 11.7 gives the heating test conditions, including operation for 15 min after the water reaches 95 °C, or after temperature stabilizes, or after thermal control operates. Clause 19 adds special tests for appliances that prevent freezing in animal troughs and appliances that maintain a liquid at a set temperature, and it sets the test position and permitted temperature rise in the test corner. This is the core of the thermal safety evaluation.
Mechanical and construction requirements
Clause 21.1 requires a drop test from 1 m onto a hardwood board, with impacts on the handle, the heating element end, and from a horizontal position. Clause 24.101 requires thermal cut-outs used to meet Clause 19 to be non-self-resetting. Clause 25.5 forbids type X attachments and allows type Z attachment. In practice, these clauses govern robustness, safety component choice, and the supply connection design.
Heat and fire resistance
Clause 30.2 applies different subclauses depending on whether the appliance is intended to prevent freezing in animal troughs or maintain a liquid at a set temperature. For other appliances, a different subclause applies, with special mention of remote-operation cases and parts connected to the mains during charging. This affects materials selection and fire-safety verification.
What terms does kSIST FprEN IEC 60335-2-74:2026 define?
- Replacement - Clause 3.1.9 uses this term for operation of the appliance in a water-filled vessel at the minimum immersion depth.
- IPX7 - Clause 6.2 names this as the minimum ingress-protection level for immersion heaters.
- Part 1 - The document uses this term for IEC 60335-1, the general safety standard that this Part 2 modifies.
- thermal cut-out - Clause 24.101 refers to this as a safety component used to meet Clause 19, and it shall not be self-resetting.
- type X attachment - Clause 25.5 says this attachment type is not permitted for these appliances.
- type Z attachment - Clause 25.5 allows this attachment type for these appliances.
Who uses kSIST FprEN IEC 60335-2-74:2026?
kSIST FprEN IEC 60335-2-74:2026 is used by appliance designers, compliance engineers, test laboratories, certification bodies, and quality managers working on portable immersion heaters. It is also relevant to buyers and specifiers who need to compare products for household use or for use in shops, light industry, or farms.
In practice, they use it to set product requirements, write test plans, check markings and instructions, and verify mechanical, thermal, moisture, and construction safety features.
What changed in kSIST FprEN IEC 60335-2-74:2026 from the previous edition?
kSIST FprEN IEC 60335-2-74:2026 supersedes EN 60335-2-74:2003 and its amendments and corrigenda. The underlying IEC edition replaces the second edition and its amendments.
The significant technical changes stated in the document are:
- alignment with IEC 60335-1:2020
- conversion of some notes into normative text in Clause 1 and 7.1
- added requirements for appliances that maintain a liquid at a set temperature in 19.1 and 30.2
Which standards are used with kSIST FprEN IEC 60335-2-74:2026?
kSIST FprEN IEC 60335-2-74:2026 is used with IEC 60335-1, which provides the general safety requirements for household and similar electrical appliances. It is also read with prEN IEC 60335-2-74:2026/prAA:2026.
The bibliography names related standards that help define boundaries between product types:
- IEC 60335-2-15 - appliances for heating liquids
- IEC 60335-2-55 - electrical appliances for aquariums and garden ponds
- IEC 60335-2-73 - fixed immersion heaters
What does the kSIST FprEN IEC 60335-2-74:2026 document contain?
The document contains clauses covering scope, definitions, classification, marking, protection against live parts, heating, moisture resistance, abnormal operation, mechanical strength, construction, wiring, components, clearances, fire resistance, and rusting. It also contains the Part 1 annexes, which are applicable to this part.
The foreword explains the document structure and numbering rules, including additional subclauses, tables, and figures starting at 101, and additional annexes designated AA, BB, and so on. It also states that the standard includes requirements, test specifications, and notes with different print styles.
Relations
- Effective Date
- 10-Sep-2024
- Effective Date
- 30-Jul-2024
- Effective Date
- 30-Jul-2024
- Effective Date
- 30-Jul-2024
- Effective Date
- 30-Jul-2024
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Agricultural Institute of Slovenia. Soil testing, plant health, agricultural product analysis.
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Frequently Asked Questions
kSIST FprEN IEC 60335-2-74:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Household and similar electrical appliances - Safety - Part 2-74: Particular requirements for portable immersion heaters". This standard covers: 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.
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.
kSIST FprEN IEC 60335-2-74:2026 is classified under the following ICS (International Classification for Standards) categories: 13.120 - Domestic safety; 97.040.50 - Small kitchen appliances. The ICS classification helps identify the subject area and facilitates finding related standards.
kSIST FprEN IEC 60335-2-74:2026 has the following relationships with other standards: It is inter standard links to kSIST FprEN IEC 60335-2-74:2026/kFprAA:2026, SIST EN 60335-2-74:2003/A2:2010, SIST EN 60335-2-74:2003, SIST EN 60335-2-74:2003/A1:2006, SIST EN 60335-2-74:2003/A11:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
kSIST FprEN IEC 60335-2-74:2026 is associated with the following European legislation: EU Directives/Regulations: 2014/35/EU, 2014/53/EU, 2014/55/EU; Standardization Mandates: M/511, M/536, M/585. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
kSIST FprEN IEC 60335-2-74:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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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
...