IEC 60335-2-61:2024

Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal storage room heaters

IEC 60335-2-61:2024 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.
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).
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);
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.
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.

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 surface.
La présente partie 2 doit être utilisée conjointement avec la dernière édition de l'IEC 60335-1 et ses amendements sauf si cette édition l'exclut. Dans ce cas, la dernière édition qui n'exclut pas la présente partie 2 est utilisée. Elle a été établie sur la base de la sixième édition (2020) de cette norme.

General Information

• Status: Published
• Publication Date: 11-Sep-2024
• ICS: 13.120 - Domestic safety
• ICS: 97.100.10 - Electric heaters
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Drafting Committee: MT 37 - TC 61/MT 37
• Current Stage: PPUB - Publication issued
• Start Date: 27-Sep-2024
• Completion Date: 12-Sep-2024

Relations

• Revises: IEC 60335-2-61:2002/AMD1:2005 - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal storage room heaters
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-61:2002/AMD2:2008 - Amendment 2 - Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal storage room heaters
• Effective Date: 05-Sep-2023
• Revises: IEC 60335-2-61:2002 - Household and similar electrical appliances - Safety - Part 2-61: Particular requirements for thermal storage room heaters
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60335-2-61 ®
Edition 3.0 2024-09
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-61: Particular requirements for thermal storage room heaters
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a
Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.

IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and
containing more than 22 500 terminological entries in English
once a month by email.
and French, with equivalent terms in 25 additional languages.

Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or

need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 60335-2-61 ®
Edition 3.0 2024-09
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Household and similar electrical appliances – Safety –
Part 2-61: Particular requirements for thermal storage room heaters
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.100.10 ISBN 978-2-8322-9725-4
– 2 – IEC 60335-2-61:2024 CMV © 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 Void 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 . 21
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 . 24
Annex AA (informative) Immediate surrounds of air-outlet grilles. 25
Bibliography . 26
List of comments . 27

Figure 101 – Probe for measuring surface temperatures . 22
Figure 101102 – Device for determining the air temperature rise . 23
Figure AA.1 – Typical cross-sections of immediate surrounds of air-outlet grilles . 25

Table 101 – Temperature rises of surfaces for specified external accessible surfaces
under normal operating conditions . 15

– 4 – IEC 60335-2-61:2024 CMV © 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.
This commented version (CMV) of the official standard IEC 60335-2-61:2024 edition 3.0
allows the user to identify the changes made to the previous IEC 60335-2-
61:2002+AMD1:2005+AMD2:2008 CSV edition 2.2. Furthermore, comments from IEC TC
61 experts are provided to explain the reasons of the most relevant changes, or to clarify
any part of the content.
A vertical bar appears in the margin wherever a change has been made. Additions are in
green text, deletions are in strikethrough red text. Experts' comments are identified by a
blue-background number. Mouse over a number to display a pop-up note with the
comment.
This publication contains the CMV and the official standard. The full list of comments is
available at the end of the CMV.

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);
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
...

IEC 60335-2-61 ®
Edition 3.0 2024-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This full version of IEC 60335-2-61:2024 includes the content of the references made to
IEC 60335-1:2020
Household and similar electrical appliances – Safety –
Part 2-61: Particular requirements for thermal storage room heaters
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.

IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.

Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need

further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 60335-2-61 ®
Edition 3.0 2024-09
EXTENDED VERSION
INTERNATIONAL
STANDARD
colour
inside
This full version of IEC 60335-2-61:2024 includes the content of the references made to
IEC 60335-1:2020
Household and similar electrical appliances – Safety –
Part 2-61: Particular requirements for thermal storage room heaters
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.120; 97.100.10 ISBN 978-2-8322-9726-1

IEC 60335-1:2020/ISH1:2021 – 1 –
© IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC 60335-1
Edition 6.0  2020-09
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES – SAFETY –

Part 1: General requirements
INTERPRETATION SHEET 1
This interpretation sheet has been prepared by IEC technical committee 61: Safety of
household and similar electrical appliances.
The text of this Interpretation Sheet is based on the following documents:
Draft Report on voting
61/5999/DISH 61/6009/RVDISH
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
___________
INTRODUCTION
Edition 6 of IEC 60335-1:2020 defines and introduces requirements for a detachable
power supply part of an appliance. In the document, 24.2 prohibits the use of a power
supply in a flexible cord.
QUESTION:
Does Subclause 24.2 prohibit the use of a detachable power supply part?
ANSWER
No, a "detachable power supply part" is a defined term and is not captured by the term
"power supply" as used in Subclause 24.2.
NOTE A detachable power supply part is captured by the defined term when the output of the power supply
part is detachable from the class III construction part of the appliance at:
– the power supply part, or
– the class III construction part of the appliance.
However, the supply cord (if any) does not have to be detachable from the detachable power supply part.
ICS 13.120; 97.030
IEC 60335-1:2020-09/ISH1:2021-11(en)

– 2 – IEC 60335-2-61:2024 EXV © IEC 2024
CONTENTS
FOREWORD . 6
INTRODUCTION to IEC 60335-1:2020 . 9
INTRODUCTION to IEC 60335-2-61:2024 . 11
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 18
4 General requirement . 29
5 General conditions for the tests . 29
6 Classification . 34
7 Marking and instructions . 34
8 Protection against access to live parts . 44
9 Starting of motor-operated appliances . 46
10 Power input and current . 46
11 Heating . 48
12 Charging of metal-ion batteries . 55
13 Leakage current and electric strength at operating temperature . 57
14 Transient overvoltages . 59
15 Moisture resistance . 60
16 Leakage current and electric strength . 63
17 Overload protection of transformers and associated circuits . 65
18 Endurance . 65
19 Abnormal operation . 65
20 Stability and mechanical hazards . 77
21 Mechanical strength . 79
22 Construction . 80
23 Internal wiring . 94
24 Components . 96
25 Supply connection and external flexible cords . 101
26 Terminals for external conductors . 109
27 Provision for earthing . 111
28 Screws and connections . 113
29 Clearances, creepage distances and solid insulation . 115
30 Resistance to heat and fire . 124
31 Resistance to rusting . 128
32 Radiation, toxicity and similar hazards . 128
Annex A (informative) Routine tests . 143
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 145
Annex C (normative) Ageing test on motors . 166
Annex D (normative) Thermal motor protectors . 167
Annex E (normative) Needle-flame test . 168
Annex F (normative) Capacitors . 169

Annex G (normative) Safety isolating transformers . 171
Annex H (normative) Switches . 172
Annex I (normative) Motors having basic insulation that is inadequate for the rated
voltage of the appliance . 174
Annex J (normative) Coated printed circuit boards . 176
Annex K (informative) Overvoltage categories . 177
Annex L (informative) Guidance for the measurement of clearances and creepage

distances . 178
Annex M (informative) Pollution degree . 181
Annex N (normative) Proof tracking test . 182
Annex O (informative) Selection and sequence of the tests of Clause 30 . 183
Annex P (informative) Guidance for the application of this standard to appliances
used in tropical climates . 188
Annex Q (informative) Sequence of tests for the evaluation of electronic circuits . 190
Annex R (normative) Software evaluation . 193
Annex S (informative) Guidance for the application of this standard on measurement
of power input and current based on the requirements of 10.1 and 10.2 concerning the

representative period . 207
Annex T (normative) UV-C radiation effect on non-metallic materials . 208
Annex U (normative) Appliances intended for remote communication through public
networks . 211
Annex AA (informative) Immediate surrounds of air-outlet grilles . 215
Bibliography . 216
Index of defined terms . 219

Figure 1 – Circuit diagram for leakage current measurement at operating temperature
for single-phase connection of class II appliances and for parts of class ll construction . 129
Figure 2 – Circuit diagram for leakage current measurement at operating temperature
for single-phase connection of other than class II appliances or parts of class ll
construction . 130
Figure 3 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral class II appliances and for parts of class ll construction . 131
Figure 4 – Circuit diagram for leakage current measurement at operating temperature
for three-phase with neutral appliances other than those of class II or parts of class ll
construction . 132
Figure 5 – Small part . 133
Figure 6 – Example of an electronic circuit with low-power points . 133
Figure 7 – Test finger nail . 134
Figure 8 – Flexing test apparatus . 135
Figure 9 – Constructions of cord anchorages . 136
Figure 10 – An example of parts of an earthing terminal .
...

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
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et
les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews, graphical symbols and the glossary.
committee, …). It also gives information on projects, replaced With a subscription you will always have access to up to date
and withdrawn publications. content tailored to your needs.

IEC Just Published - webstore.iec.ch/justpublished
Electropedia - www.electropedia.org
Stay up to date on all new IEC publications. Just Published
The world's leading online dictionary on electrotechnology,
details all new publications released. Available online and once
containing more than 22 500 terminological entries in English
a month by email.
and French, with equivalent terms in 25 additional languages.

Also known as the International Electrotechnical Vocabulary
IEC Customer Service Centre - webstore.iec.ch/csc
(IEV) online.
If you wish to give us your feedback on this publication or need

further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC -  IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications, symboles
en utilisant différents critères (numéro de référence, texte, graphiques et le glossaire. Avec un abonnement, vous aurez
comité d’études, …). Elle donne aussi des informations sur les toujours accès à un contenu à jour adapté à vos besoins.
projets et les publications remplacées ou retirées.

Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au monde,
Restez informé sur les nouvelles publications IEC. Just
avec plus de 22 500 articles terminologiques en anglais et en
Published détaille les nouvelles publications parues.
français, ainsi que les termes équivalents dans 25 langues
Disponible en ligne et une fois par mois par email.
additionnelles. Egalement appelé Vocabulaire

Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[e-mail].
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

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.
...