oSIST prEN IEC 60335-2-61:2026
(Main)Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal-storage room heaters
Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal-storage room heaters
This European Standard deals with the safety of electric thermal-storage room heaters for household and similar purposes that are intended to heat the room in which they are located, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances including direct current (DC) supplied appliances
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-61: Besondere Anforderungen für Speicherheizgeräte
Appareils électrodomestiques et analogues - Sécurité - Partie 2-61: Exigences particulières pour les appareils de chauffage à accumulation
L'IEC 60335-2-61:2024 traite de la sécurité des appareils de chauffage à accumulation électriques à usage domestique et analogue, destinés au chauffage de la pièce dans laquelle ils se trouvent, dont la tension assignée est inférieure ou égale à 250 V pour les appareils monophasés et à 480 V pour les autres appareils, y compris les appareils alimentés en courant continu. Les appareils non destinés à un usage domestique normal mais qui néanmoins peuvent constituer une source de danger pour le public, tels que les appareils destinés à être utilisés par des usagers non avertis dans des magasins, chez des artisans et dans des fermes, sont compris dans le domaine d'application de la présente norme.
Dans la mesure du possible, la présente norme traite des dangers courants que présentent les appareils, encourus par tous les individus à l'intérieur et autour de l'habitation. Cependant, elle ne tient en général pas compte
- des personnes (y compris des enfants) dont les capacités physiques, sensorielles ou mentales; ou le manque d'expérience et de connaissance les empêche d'utiliser l'appareil en toute sécurité sans surveillance ou instruction;
- de l'utilisation de l'appareil comme jouet par des enfants.
L’attention est attirée sur le fait que
- la présente norme ne s'applique qu'aux appareils de chauffage à accumulation autonomes. Toutefois, elle peut être utilisée comme un guide, pour autant qu'elle s'applique raisonnablement, pour déterminer les exigences et les spécifications d'essais applicables aux autres appareils de chauffage à accumulation;
- pour les appareils qui comportent des éléments de chauffage direct, l'IEC 60335-2-30 s'applique également;
- pour les appareils de chauffage destinés à être utilisés dans des véhicules ou à bord de navires ou d'aéronefs, des exigences supplémentaires peuvent être nécessaires;
- dans de nombreux pays, des exigences supplémentaires sont spécifiées par les organismes nationaux de la santé publique, par les organismes nationaux responsables de la protection des travailleurs et par des organismes analogues.
La présente norme ne s'applique pas:
- aux appareils destinés exclusivement à des usages industriels;
- aux appareils de chauffage incorporés dans la structure des bâtiments;
- aux systèmes de chauffage central;
- aux appareils de chauffage pour saunas (IEC 60335-2-53);
- aux films souples chauffants pour le chauffage des locaux (IEC 60335-2-96);
- aux appareils de chauffage destinés à être utilisés dans des locaux qui présentent des conditions particulières, telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz).
Cette troisième édition annule et remplace la deuxième édition publiée en 2002, son amendement 1 (2005) et son amendement 2 (2008). Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) texte aligné sur l'IEC 60335-1:2020;
b) suppression et transformation de certaines notes en texte normatif (Article 1 et paragraphes, 7.1, 10.1, 19.3.102, 24.101);
c) introduction de l'application du calibre d'essai 19 (8.1.1, 20.2);
d) les limites de température ont été mises à jour et des exigences de mesure ont été définies (11.3, 11.8, Tableau 101);
e) introduction de la Figure 101 qui représente le dispositif de mesure des températures de surfac
Gospodinjski in podobni električni aparati - Varnost - 2-61. del: Posebne zahteve za termoakumulacijske grelnike prostorov
Ta evropski standard obravnava varnost električnih akumulacijskih grelnikov prostorov za gospodinjsko in podobno uporabo, ki so namenjeni ogrevanju prostora, v katerem so nameščeni, pri čemer njihova naznačena napetost ne presega 250 V za enofazne naprave in 480 V za druge naprave, vključno z napravami, ki jih napaja enosmerni tok (DC).
General Information
- Status
- Not Published
- Public Enquiry End Date
- 29-Jun-2026
- Technical Committee
- VGA - Safety of household and similar electrical appliances
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 07-May-2026
- Due Date
- 24-Sep-2026
Relations
- Refers
SIST EN 60584-1:2014 - Thermocouples - Part 1: EMF specifications and tolerances (IEC 60584-1:2013) - Effective Date
- 10-Mar-2026
- Effective Date
- 10-Mar-2026
- Effective Date
- 10-Mar-2026
- Effective Date
- 07-Apr-2025
- Effective Date
- 01-Apr-2025
- Effective Date
- 01-Apr-2025
- Effective Date
- 01-Apr-2025
- Effective Date
- 01-Apr-2025
- Effective Date
- 01-Apr-2025
Overview
oSIST prEN IEC 60335-2-61:2026 is a European standard developed by the International Electrotechnical Commission (IEC) and the European Committee for Electrotechnical Standardization (CLC). This standard specifies the safety requirements for electric thermal-storage room heaters intended for household and similar applications. It addresses appliances with rated voltages up to 250 V for single-phase and up to 480 V for other types, including direct current (DC) supplied appliances.
The purpose of this standard is to minimize risks associated with the use of thermal-storage heaters in homes and similar environments. It covers potential electrical, mechanical, thermal, fire, and radiation hazards, ensuring consistency in safety practices throughout the European market.
Key Topics
Scope of Application
- Applies to electric thermal-storage room heaters installed in domestic or similar settings.
- Includes appliances used in light industry, shops, and on farms, as long as they pose comparable risks.
- Excludes heaters intended solely for industrial use, building-integrated units, central heating systems, sauna heaters, flexible sheet heating elements, or heaters used in corrosive or explosive atmospheres.
Essential Safety Requirements
- Protection against access to live parts.
- Limits on temperature rise for external surfaces under normal operation.
- Specifications for power input and current measurement during appliance operation.
- Instructional markings and labels to ensure proper installation and inform users of risks (e.g., "Do not cover" warning).
Marking and User Instructions
- Clear product labeling for rated input, voltage, charging period, and weight.
- Installation and usage instructions provided on durable materials.
- Guidance on safe placement, required clearances, and maintenance precautions.
- Visible hazards markings after installation.
Testing and Compliance
- Standardized testing methods for operational cycles, protective measures, and temperature measurements.
- Testing using probes simulating contact to ensure safe surface temperatures.
Applications
Thermal-storage room heaters are commonly used for:
- Residential Heating: Offering efficient, off-peak energy use by storing heat for gradual release during cold periods.
- Commercial and Public Spaces: Providing controlled, localized heating in offices, shops, light industrial areas, or other settings accessible to the public.
- Temporary and Remote Installations: Suitable for spaces where integration with central heating is impractical.
By complying with oSIST prEN IEC 60335-2-61:2026, manufacturers and suppliers demonstrate that their thermal-storage room heaters meet the essential safety requirements for the European market. This enhances product trust, supports regulatory acceptance, and reduces liability associated with product-related accidents.
Related Standards
Thermal-storage room heaters often interface with or must be evaluated alongside related standards, including:
- IEC 60335-1 – General requirements for the safety of household and similar electrical appliances.
- IEC 60335-2-30 – Particular requirements for room heaters with direct-acting heating elements.
- IEC 60335-2-53 – Requirements for sauna heaters.
- IEC 60335-2-96 – Requirements for flexible sheet heating elements.
- ISO 3864-1 – Design principles for safety signs and markings.
- IEC 60584-1 – Standards for thermocouples and temperature measurements.
- CISPR 14-1/14-2 and IEC 61000-3 series – Electromagnetic compatibility requirements.
Practical Value
Adhering to oSIST prEN IEC 60335-2-61:2026 ensures that electric thermal-storage room heaters are manufactured, marketed, and installed in line with contemporary safety expectations. Manufacturers benefit from clear safety benchmarks, facilitating product development, certification, and market access. For installers and end-users, compliance means reduced risk of injury or fire and clear guidance on usage and maintenance.
Implementing this standard supports higher safety, reliability, and consumer confidence in thermal-storage room heater technology across Europe and beyond.
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Frequently Asked Questions
oSIST prEN IEC 60335-2-61:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal-storage room heaters". This standard covers: This European Standard deals with the safety of electric thermal-storage room heaters for household and similar purposes that are intended to heat the room in which they are located, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances including direct current (DC) supplied appliances
This European Standard deals with the safety of electric thermal-storage room heaters for household and similar purposes that are intended to heat the room in which they are located, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances including direct current (DC) supplied appliances
oSIST prEN IEC 60335-2-61:2026 is classified under the following ICS (International Classification for Standards) categories: 13.120 - Domestic safety; 97.100.10 - Electric heaters. The ICS classification helps identify the subject area and facilitates finding related standards.
oSIST prEN IEC 60335-2-61:2026 has the following relationships with other standards: It is inter standard links to SIST EN 60584-1:2014, SIST ISO 3864-1:2012, SIST EN 60335-2-30:2010, oSIST prEN IEC 60335-2-61:2026/oprAA:2026, SIST EN 60335-2-61:2003/A12:2021, SIST EN 60335-2-61:2003/A11:2020, SIST EN 60335-2-61:2003/A1:2005, SIST EN 60335-2-61:2003, SIST EN 60335-2-61:2003/A2:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
oSIST prEN IEC 60335-2-61:2026 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
01-junij-2026
Gospodinjski in podobni električni aparati - Varnost - 2-61. del: Posebne zahteve
za termoakumulacijske grelnike prostorov
Household and similar electrical appliances - Safety - Part 2-61: Particular requirements
for thermal-storage room heaters
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-61:
Besondere Anforderungen für Speicherheizgeräte
Appareils électrodomestiques et analogues - Sécurité - Partie 2-61: Exigences
particulières pour les appareils de chauffage à accumulation
Ta slovenski standard je istoveten z: prEN IEC 60335-2-61:2026
ICS:
13.120 Varnost na domu Domestic safety
97.100.10 Električni grelniki Electric heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD DRAFT
prEN IEC 60335-2-61
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2026
ICS 13.120; 97.100.10 Will supersede EN 60335-2-61:2003; EN 60335-2-
61:2003/A1:2005; EN 60335-2-61:2003/A2:2008; EN
60335-2-61:2003/A12:2021
English Version
Household and similar electrical appliances - Safety - Part 2-61:
Particular requirements for thermal-storage room heaters
(IEC 60335-2-61:2024)
Appareils électrodomestiques et analogues - Sécurité - Sicherheit elektrischer Geräte für den Hausgebrauch und
Partie 2-61: Exigences particulières pour les appareils de ähnliche Zwecke - Teil 2-61: Besondere Anforderungen für
chauffage à accumulation Speicherheizgeräte
(IEC 60335-2-61:2024) (IEC 60335-2-61:2024)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-07-24.
The text of this draft consists of the text of IEC 60335-2-61:2024.
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: 81622 Ref. No. prEN IEC 60335-2-61:2026 E
1 European foreword
2 This document (prEN IEC 60335-2-61:2026) consists of the text of IEC 60335-2-61:2024 prepared by IEC/TC 61
3 "Safety of household and similar electrical appliances".
4 This document is currently submitted to the Enquiry.
5 The following dates are proposed:
• latest date by which the existence of this (doa) dav + 6 months
document 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 (to be confirmed or
withdrawn modified when voting)
6 This document will supersede EN 60335-2-61:2003 and all of its amendments and corrigenda (if any).
7 This document is read in conjunction with prEN IEC 60335-2-61:2026/prAA:2026.
IEC 60335-2-61 ®
Edition 3.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-61: Particular requirements for thermal storage room heaters
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-61: Exigences particulières pour les appareils de chauffage à
accumulation
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120; 97.100.10 ISBN 978-2-8322-9589-2
– 2 – IEC 60335-2-61:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 10
5 General conditions for the tests . 10
6 Classification . 10
7 Marking and instructions . 10
8 Protection against access to live parts . 12
9 Starting of motor-operated appliances . 12
10 Power input and current . 12
11 Heating . 13
12 Charging of metal-ion batteries . 15
13 Leakage current and electric strength at operating temperature . 15
14 Transient overvoltages . 16
15 Moisture resistance . 16
16 Leakage current and electric strength . 16
17 Overload protection of transformers and associated circuits . 16
18 Endurance . 16
19 Abnormal operation . 16
20 Stability and mechanical hazards . 18
21 Mechanical strength . 19
22 Construction . 19
23 Internal wiring . 20
24 Components . 20
25 Supply connection and external flexible cords . 20
26 Terminals for external conductors . 20
27 Provision for earthing . 21
28 Screws and connections . 21
29 Clearances, creepage distances and solid insulation . 21
30 Resistance to heat and fire . 21
31 Resistance to rusting . 21
32 Radiation, toxicity and similar hazards . 21
Annexes . 23
Annex AA (informative) Immediate surrounds of air-outlet grilles . 24
Bibliography . 25
Figure 101 – Probe for measuring surface temperatures . 21
Figure 102 – Device for determining the air temperature rise . 22
Figure AA.1 – Typical cross-sections of immediate surrounds of air-outlet grilles . 24
IEC 60335-2-61:2024 © IEC 2024 – 3 –
Table 101 – Temperature rises for specified external accessible surfaces under normal
operating conditions . 15
– 4 – IEC 60335-2-61:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-61: Particular requirements for thermal-storage room 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
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60335-2-61 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 1:2005 and Amendment 2:2008. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with IEC 60335-1:2020;
b) deletion or conversion of some notes to normative text (Clause 1, 7.1, 10.1, 19.3.102,
24.101);
c) application of test probe 19 has been introduced (8.1.1, 20.2);
IEC 60335-2-61:2024 © IEC 2024 – 5 –
d) temperature limits have been updated and requirements for measurement were defined
(Clause 11.3, 11.8, Table 101);
e) implementation of Figure 101 with the probe for measuring surface temperatures.
The text of this International Standard is based on the following documents:
Draft Report on voting
61/7268/FDIS 61/7291/RVD
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 is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments unless that edition precludes it; in that case, the latest edition that does not
preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.
NOTE 1 When "Part 1" is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to convert
that publication into the IEC standard: Particular requirements for thermal-storage room
heaters.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies as
far as is reasonable. When this standard states "addition", "modification", or "replacement", the
relevant text in Part 1 is to be adapted accordingly.
NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional Annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
The following differing practices, of a less permanent nature exist in the countries indicated
below.
– 7.1: All thermal-storage room heaters have to be marked with a warning against covering
(Sweden).
– 6 – IEC 60335-2-61:2024 © IEC 2024
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations can need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation nationally
not earlier than 12 months or later than 36 months from the date of publication.
IEC 60335-2-61:2024 © IEC 2024 – 7 –
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its
provisions is entrusted to appropriately qualified and experienced persons.
Guidance documents concerning the application of the safety requirements for appliances can
be accessed via TC 61 supporting documents on the IEC website
https://www.iec.ch/tc61/supportingdocuments
This information is given for the convenience of users of this International Standard and does
not constitute a replacement for the normative text in this standard.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal
use taking into account the manufacturer's instructions. It also covers abnormal situations that
can be expected in practice and takes into account the way in which electromagnetic
phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IEC 60364 as far as possible so that there
is compatibility with the wiring rules when the appliance is connected to the supply mains.
However, national wiring rules can differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with in
Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal publications, basic safety publications and group safety publications covering a hazard are not
applicable since they have been taken into consideration when developing the general and particular requirements
for the IEC 60335 series of standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features that impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of the
requirements and, if found to be substantially equivalent, may be considered to comply with the
standard.
NOTE 3 Standards dealing with non-safety aspects of household appliances are:
– IEC standards published by TC 59 concerning methods of measuring performance;
– CISPR 11, CISPR 14-1 and relevant IEC 61000-3 series standards concerning electromagnetic emissions;
– CISPR 14-2 concerning electromagnetic immunity;
– IEC standards published by TC 111 concerning environmental matters.
– 8 – IEC 60335-2-61:2024 © IEC 2024
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-61: Particular requirements for thermal-storage room heaters
1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of electric thermal-storage room heaters for
household and similar purposes that are intended to heat the room in which they are located,
their rated voltage being not more than 250 V for single-phase appliances and 480 V for other
appliances including direct current (DC) supplied appliances.
Appliances not intended for normal household use but which nevertheless can be a source of
danger to the public, such as appliances intended to be used by laypersons in shops, in light
industry and on farms, are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by appliances
that are encountered by all persons in and around the home. However, in general, it does not
take into account:
– persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
Attention is drawn to the fact that
– this standard only applies to self-contained thermal-storage room heaters. However, it
can be used as a guide, in so far as it reasonably applies, to determine the requirements
and test specifications for other thermal-storage room heaters;
– for heaters incorporating direct-acting heating elements, IEC 60335-2-30 is also applicable;
– for heaters intended to be used in vehicles or on board ships or aircraft, additional
requirements can be necessary;
– in many countries additional requirements are specified by the national health authorities,
the national authorities responsible for the protection of labour and similar authorities.
This standard does not apply to
– appliances intended exclusively for industrial purposes;
– heaters incorporated in the building structure;
– central heating systems;
– heaters for saunas (IEC 60335-2-53);
– flexible sheet heating elements for room heating (IEC 60335-2-96);
– heaters intended to be used in locations where special conditions prevail, such as the
presence of a corrosive or explosive atmosphere (dust, vapour or gas).
IEC 60335-2-61:2024 © IEC 2024 – 9 –
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60335-2-30, Household and similar electrical appliances – Safety – Part 2-30: Particular
requirements for room heaters
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
ISO 3864-1, Graphical symbols — Safety colours and safety signs — Part 1: Design principles
for safety signs and safety markings
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.9 Modification:
normal operation
Replace the first paragraph with the following:
operation of the appliance under the following conditions:
The heater is operated in cycles, each cycle having a duration of 24 h and consisting of a
charging period and a discharging period. The charging period is terminated when all heating
elements are disconnected for the first time by the devices controlling the temperature of the
core (charge controls).
3.1.101
rated charging period
longest uninterrupted charging period assigned to the heater by the manufacturer
3.1.102
rated charge
energy consumption assigned to the heater by the manufacturer for a rated charging period
3.5 Definitions relating to types of appliances
3.5.101
thermal-storage room heater
heater constructed to store heat obtained from electrical energy in a heat-accumulating core
and to discharge it at any time
3.5.102
controlled-output heater
thermal-storage room heater, the heat output of which can be controlled by means such as
fans, shutters or flaps
3.5.103
free-output heater
thermal-storage room heater, the heat output of which is discharged by natural convection
and radiation and can only be varied by adjusting the cha
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