oSIST prEN IEC 60335-2-25:2026

Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens

This European Standard deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V.

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-25: Besondere Anforderungen für Mikrowellenkochgeräte und kombinierte Mikrowellenkochgeräte

Appareils électrodomestiques et analogues - Sécurité - Partie 2-25: Exigences particulières pour les fours à micro-ondes, y compris les fours à micro-ondes combinés

IEC 60335-2-25:2024 est disponible sous forme de IEC 60335-2-25:2024 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.

L'IEC 60335-2-25:2024 traite de la sécurité des fours à micro-ondes à usage domestique et analogue dont la tension assignée est inférieure ou égale à 250 V, y compris les appareils alimentés en courant continu (CC) et les appareils alimentés par batteries. La présente norme traite également des fours à micro-ondes combinés, pour lesquels l'Annexe AA normative s'applique. La présente norme traite également des fours à micro-ondes destinés à être utilisés à bord de navires, pour lesquels l'Annexe BB normative s'applique. Les appareils non destinés à un usage domestique normal, mais qui peuvent néanmoins constituer une source de danger pour le public, tels que les appareils destinés à être utilisés par des utilisateurs non avertis dans des magasins, chez des artisans et dans des fermes, sont compris dans le domaine d'application de la présente norme. Toutefois, si l'appareil est destiné à être utilisé par des professionnels pour la préparation d'aliments à des fins commerciales, cet appareil n'est pas considéré comme étant destiné uniquement à un usage domestique et analogue.
Dans la mesure du possible, la présente norme traite des dangers courants que présentent les appareils et auxquels sont exposés tous les individus situés 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 empêchent d'utiliser l'appareil en toute sécurité sans surveillance ou instruction;
- des enfants qui jouent avec l'appareil.
L'attention est attirée sur le fait que
- pour les appareils destinés à être utilisés dans des véhicules ou à bord de navires ou d'avions, des exigences supplémentaires peuvent être nécessaires;
- dans de nombreux pays, des exigences supplémentaires sont spécifiées par les organismes nationaux de la santé, par les organismes nationaux responsables de la protection des travailleurs et par des organismes similaires.
La présente norme ne s'applique pas
- aux fours à micro-ondes à usage commercial (IEC 60335-2-90);
- aux appareils à micro-ondes commerciaux avec applicateurs à insertion ou à contact (IEC 6033-2-110);
- aux installations de chauffage industriel à hyperfréquences (IEC 60519-6);
- aux appareils destinés à des usages médicaux (IEC 60601);
- aux appareils 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 huitième édition annule et remplace la septième édition parue en 2020. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) certains paragraphes ont été modifiés pour les socles femelles de connecteurs et les socles de prises de courant;
b) le 7.12 a été amélioré pour plus de clarté;
c) les 8.1.1 et 20.2 ont été modifiés afin d'utiliser le calibre d'essai 19;
d) les 10.1 et 10.2 ont été améliorés pour les fours à micro-ondes de type o

Gospodinjski in podobni električni aparati - Varnost - 2-25. del: Posebne zahteve za mikrovalovne pečice, vključno s kombiniranimi mikrovalovnimi pečicami

Ta evropski standard obravnava varnost mikrovalovnih pečic za gospodinjsko in podobno uporabo, katerih nazivna napetost ne presega 250 V.

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Jun-2026
• ICS: 13.120 - Domestic safety
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 21-Apr-2026
• Due Date: 08-Sep-2026
• Directive: Harmonized Standard2014/35/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:

  ---

  Harmonized Standard2014/53/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:

  ---

  Not Harmonized2014/55/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: prEN IEC 60335-2-25:2026 - Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens

Relations

• Refers: oSIST prEN IEC 60335-2-6:2026 - Household and similar electrical appliances - Safety - Part 2-6: Particular requirements for stationary cooking ranges, hobs, ovens and similar appliances
• Effective Date: 10-Feb-2026
• Refers: SIST EN IEC 60335-2-9:2023 - Household and similar electrical appliances - Safety - Part 2-9: Particular requirements for grills, toasters and similar portable cooking appliances (IEC 60335-2-9:2019)
• Effective Date: 10-Feb-2026
• Refers: SIST EN IEC 60068-2-52:2018 - Environmental testing - Part 2: Tests - Test Kb: Salt mist, cyclic (sodium chloride solution) (IEC 60068-2-52:2017)
• Effective Date: 10-Feb-2026
• Refers: SIST EN 60068-2-27:2009 - Environmental testing -- Part 2-27: Tests - Test Ea and guidance: Shock
• Effective Date: 10-Feb-2026
• Refers: SIST EN 60584-1:2014 - Thermocouples - Part 1: EMF specifications and tolerances (IEC 60584-1:2013)
• Effective Date: 10-Feb-2026
• Refers: SIST EN 60068-2-6:2008 - Environmental testing - Part 2-6: Tests - Test Fc: Vibration (sinusoidal)
• Effective Date: 10-Feb-2026
• Amended By: oSIST prEN IEC 60335-2-25:2026/oprAA:2026 - Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens
• Effective Date: 10-Sep-2024
• Revises: SIST EN IEC 60335-2-25:2022 - Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens
• Effective Date: 30-Jul-2024
• Revises: SIST EN IEC 60335-2-25:2022/A11:2022 - Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens
• Effective Date: 30-Jul-2024

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2026
Gospodinjski in podobni električni aparati - Varnost - 2-25. del: Posebne zahteve
za mikrovalovne pečice, vključno s kombiniranimi mikrovalovnimi pečicami
Household and similar electrical appliances - Safety - Part 2-25: Particular requirements
for microwave ovens, including combination microwave ovens
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-25:
Besondere Anforderungen für Mikrowellenkochgeräte und kombinierte
Mikrowellenkochgeräte
Appareils électrodomestiques et analogues - Sécurité - Partie 2-25: Exigences
particulières pour les fours à micro-ondes, y compris les fours à micro-ondes combinés
Ta slovenski standard je istoveten z: prEN IEC 60335-2-25:2026
ICS:
13.120 Varnost na domu Domestic safety
97.040.20 Štedilniki, delovni pulti, Cooking ranges, working
pečice in podobni aparati tables, ovens and similar
appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD DRAFT
prEN IEC 60335-2-25
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2026
ICS 13.120; 97.040.20 Will supersede EN IEC 60335-2-25:2021; EN IEC 60335-
2-25:2021/A11:2021
English Version
Household and similar electrical appliances - Safety - Part 2-25:
Particular requirements for microwave ovens, including
combination microwave ovens
(IEC 60335-2-25:2024)
Appareils électrodomestiques et analogues - Sécurité - Sicherheit elektrischer Geräte für den Hausgebrauch und
Partie 2-25: Exigences particulières pour les fours à micro- ähnliche Zwecke - Teil 2-25: Besondere Anforderungen für
ondes, y compris les fours à micro-ondes combinés Mikrowellenkochgeräte und kombinierte
(IEC 60335-2-25:2024) Mikrowellenkochgeräte
(IEC 60335-2-25:2024)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-07-03.
The text of this draft consists of the text of IEC 60335-2-25:2024.
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: 80429 Ref. No. prEN IEC 60335-2-25:2026 E

European foreword
This document (prEN IEC 60335-2-25:2026) consists of the text of document IEC 60335-2-25:2024,
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 is read in conjunction with prEN IEC 60335-2-25:2026/prAA:2026.
This document has been prepared under a standardisation request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
For the relationship with EU Legislation, see informative Annexes ZZA and ZZC, which are an integral
part of prEN IEC 60335-2-25:2026/prAA:2026.

IEC 60335-2-25 ®
Edition 8.0 2024-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-25: Particular requirements for microwave ovens, including combination

microwave ovens
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-25: Exigences particulières pour les fours à micro-ondes, y compris les

fours à micro-ondes combinés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120, 97.040.20 ISBN 978-2-8322-9184-9

– 2 – IEC 60335-2-25:2024 © 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 . 11
7 Marking and instructions . 11
8 Protection against access to live parts . 13
9 Starting of motor-operated appliances . 13
10 Power input and current . 14
11 Heating . 14
12 Charging of metal-ion batteries . 16
13 Leakage current and electric strength at operating temperature . 16
14 Transient overvoltages . 16
15 Moisture resistance . 17
16 Leakage current and electric strength . 18
17 Overload protection of transformers and associated circuits . 19
18 Endurance . 19
19 Abnormal operation . 20
20 Stability and mechanical hazards . 22
21 Mechanical strength . 22
22 Construction . 24
23 Internal wiring . 30
24 Components . 30
25 Supply connection and external flexible cords . 31
26 Terminals for external conductors . 31
27 Provision for earthing . 31
28 Screws and connections . 31
29 Clearances, creepage distances and solid insulation . 31
30 Resistance to heat and fire . 31
31 Resistance to rusting . 32
32 Radiation, toxicity and similar hazards . 32
Annexes . 37
Annex A (informative) Routine tests . 38
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 40
Annex R (normative) Software evaluation . 41
Annex AA (normative) Combination microwave ovens . 42
Annex BB (normative) Microwave ovens intended to be used on board ships . 45
Bibliography . 47

IEC 60335-2-25:2024 © IEC 2024 – 3 –
Figure 101 – Test rod for door interlock concealment . 33
Figure 102 – Void . 33
Figure 103 – Test cabinet including separation board, position of funnel and example
for direction of tilt . 33
Figure 104 – Probe for measuring surface temperatures . 34
Figure 105 – Front view of appliance with identification of excluded areas . 35
Figure 106 – Arrangement of work surface for spillage test on built-in microwave oven . 35
Figure 107 – Detail of bottle cap and position of hole . 36
Figure 108 – Spillage solution bottle . 36
Figure 109 – Bottle position for the spillage test . 36

Table 101 – Maximum temperature rises of external accessible surfaces under normal
operating conditions . 16

– 4 – IEC 60335-2-25:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-25: Particular requirements for microwave ovens,
including combination microwave ovens

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 60335-2-25 has been prepared by subcommittee 61B: Safety of microwave appliances for
household and commercial use, of IEC technical committee 61: Safety of household and similar
electrical appliances. It is an International Standard.
This eighth edition cancels and replaces the seventh edition published in 2020. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) some subclauses have been modified for the appliance outlets and socket-outlets;
b) Subclause 7.12 has been improved in clarity;

IEC 60335-2-25:2024 © IEC 2024 – 5 –
c) Subclauses 8.1.1 and 20.2 have been modified to adopt test probe 19;
d) Subclauses 10.1 and 10.2 have been improved in clarity for inverter type microwave ovens;
e) maximum temperature rises of external accessible surfaces have been added in
Subclause 11.8;
f) test criterion has been modified in Subclause 15.101;
g) Subclause 15.102 has been modified for harmonization with IEC 60335-2-6;
h) Subclauses 8.1.3, 15.103, 19.11.2, 19.13, 22.105, 22.106, 22.111 and Figure 101 have been
improved in clarity;
i) Subclauses 22.103.2, 22.105 and 22.120 have been modified to adopt test probe 18;
j) Subclause 16.101 has been modified to move the content of 16.101.1, 16.101.2 directly
under 16.101;
k) Subclause 22.119 has been modified to move the content of 22.119.1, 22.119.2 and
22.119.3 directly under 22.119.
The text of this International Standard is based on the following documents:
Draft Report on voting
61B/701/FDIS 61B/705/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/standardsdev/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 microwave ovens, including
combination microwave ovens.
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.

– 6 – IEC 60335-2-25:2024 © IEC 2024
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 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.
The following differences exist in the countries indicated below.
– 5.3:
Microwave leakage is not to exceed 10 W/m during the initial test (Japan and
USA).
– 6.1: Microwave ovens may be class 0I if the rated voltage does not exceed more
than 150 V (Japan).
– 7.12: Specific instructions exist pertaining to using and servicing microwave ovens
with respect to the risk of exposure to microwave energy (USA).
– 7.12: It is prohibited to place the appliance in a cabinet with a door (Japan).
– Clause 18: The test is carried out on two appliances (USA).
– 19.11.2: The input voltage variation is not applied (USA).
– 19.13: Microwave leakage is measured only at the end of each test (USA).
– 21.102: The applied force is 222 N (USA).
– 21.105:
Microwave leakage is not to exceed 50 W/m (Japan and USA).
– 22.111: Microwave leakage is measured only at the end of the test (USA).
– 22.112:
Microwave leakage is not to exceed 50 W/m (Japan and USA).
– 22.115: All access to the cavity has to be prevented (USA).

IEC 60335-2-25:2024 © 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 and SC 61B supporting documents on the IEC website
https://www.iec.ch/tc61/supportingdocuments
https://www.iec.ch/sc61b/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 which 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 can 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 60335-2-25:2024 © IEC 2024
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-25: Particular requirements for microwave ovens,
including combination microwave ovens

1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of microwave ovens for household and similar
use, their rated voltage being not more than 250 V including direct current (DC) supplied
appliances and battery-operated appliances.
This standard also deals with combination microwave ovens, for which normative Annex AA
is applicable.
This standard also deals with microwave ovens intended to be used on board ships, for which
normative Annex BB is applicable.
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 laymen in shops, in light
industry and on farms, are within the scope of this standard. However, if the appliance is
intended to be used professionally to process food for commercial purposes, the appliance is
not considered to be for household and similar use only.
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
– for appliances 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
– commercial microwave ovens (IEC 60335-2-90);
– commercial microwave appliances with insertion or contacting applicators
(IEC 60335-2-110);
– industrial microwave heating equipment (IEC 60519-6);
– appliances for medical purposes (IEC 60601);
– appliances 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 60335-2-25:2024 © IEC 2024 – 9 –
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60068-2-6, Environmental testing – Part 2: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-52, Environmental testing – Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium
chloride solution)
IEC 60335-2-6:— , Household and similar electrical appliances – Safety – Part 2-6: Particular
requirements for stationary cooking ranges, hobs, ovens and similar appliances
IEC 60335-2-9, Household and similar electrical appliances – Safety – Part 2-9: Particular
requirements for grills, toasters and similar portable cooking appliances
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 Definitions relating to physical characteristics
3.1.7
Note 101 to entry: The rated frequency is the input frequency.
3.1.9
normal operation
Modification:
Replace the first paragraph by the following:
operation of the appliance with 1 000 g ± 50 g of potable water at an initial temperature of
20 °C ± 2 °C in a cylindrical borosilicate glass vessel having a maximum thickness of 3 mm and
an outside diameter of approximately 190 mm, the vessel being placed on the centre of the
shelf
3.5 Definitions relating to types of appliances
3.5.101
microwave oven
appliance using electromagnetic energy in one or several of the ISM frequency bands between
300 MHz and 30 GHz, for heating food and beverages in a cavity
Note 1 to entry: ISM frequency bands are the electromagnetic frequencies established by the ITU and reproduced
in CISPR 11.
___________
Under preparation. Stage at the time of publication: IEC/FDIS 60335-2-6:2024.

– 10 – IEC 60335-2-25:2024 © IEC 2024
3.5.102
combination microwave oven
microwave oven in which heat is also provided in the cavity by simultaneous or consecutive
operation of resistive heating elements
Note 1 to entry: The resistive heating elements are used to provide radiant heat, convection heat or steam.
3.6 Definitions relating to parts of an appliance
3.6.101
cavity
space enclosed by the inner walls and the door in which the load is placed
3.6.102
shelf
horizontal support in the cavity on which the load is placed
3.6.103
door interlock
device or system that prevents the operation of the microwave generator(s), unless the oven
door is closed
3.6.104
monitored door interlock
door interlock system that incorporates a supervision device
3.6.105
temperature-sensing probe
device that is inserted into the food to measure its temperature and is a part of an oven control
3.8 Definitions relating to miscellaneous matters
3.8.101
open deck
area that is exposed to marine environment
3.8.102
dayroom
area that can be exposed to marine environment from time to time
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows.
5.2 Addition:
An additional sample can be required for the test of 19.104.
Six samples of the interlocks are required for the test of 24.1.4.

IEC 60335-2-25:2024 © IEC 2024 – 11 –
5.3 Modification:
Instead of carrying out the tests in the order of clauses, the following sequence of clauses and
subclauses applies: 32.1, 22.113, 22.108, 22.115, 22.116, Clause 7 to 17, Clause 20, Clause 21
(except 21.101 to 21.105), Clause 18, Clause 19 (except 19.104), Clause 22 (except 22.108,
22.113, 22.115 and 22.116), Clause 23 to 31 and 32.2, 21.101 to 21.105 and 19.104.
5.101 Microwave ovens are tested as motor-operated appliances.
5.102 Class III temperature-sensing probes are only subjected to the tests of 22.112.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Modification:
Microwave ovens shall be class I or class II.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Appliances shall be marked with the nominal frequency in megahertz of the ISM band in which
they operate.
If the removal of any cover results in microwave leakage exceeding the value specified in 32.1,
the cover shall be marked with the substance of the following:
WARNING
MICROWAVE ENERGY
DO NOT REMOVE THIS COVER
When the exempted provisions of footnote b to Table 101 and/or Table 3 apply, the appliance
shall be marked with the substance of "CAUTION: Hot surface", or symbol IEC 60417-5041
(2002-10).
7.6 Addition:
[symbol IEC 60417-5041 caution, hot surface
(2002-10)]
7.12 Addition:
The instructions shall include the substance of the following warnings:
– WARNING: If the door or door seals are damaged, the oven must not be operated until it
has been repaired by a competent person.

– 12 – IEC 60335-2-25:2024 © IEC 2024
– WARNING: It is hazardous for anyone other than a competent person to carry out any
service or repair operation that involves the removal of a cover which gives protection
against exposure to microwave energy.
NOTE 101 This warning is applicable if microwave leakage exceeds the limit specified in 32.1 during the
removal of any cover.
– WARNING: Liquids and other foods must not be heated in sealed containers since they are
liable to explode.
– WARNING: Ensure that the cavity does not contain any items or utensils that are not suitable
for the use with the microwave oven before you operate the appliance.
– WARNING: Do not use the cavity for storing combustible products, cooking utensils, or food
and similar when the microwave oven is not in use.
The instructions shall include the substance of the following:
– This appliance is intended to be used in household and similar applications such as:
• staff kitchen areas in shops, offices and other working environments;
• farm houses;
• by clients in hotels, motels and other residential environments;
• bed and breakfast type environments.
If the manufacturer wishes to limit the use of the appliance to less than the above, this shall
be clearly stated in the instructions.
– The minimum height of free space necessary above the top surface of the oven.
– Metallic containers for food and beverages are not allowed during microwave cooking. This
requirement is not applicable if the manufacturer specifies size and shape of metallic
containers suitable for microwave cooking.
– When heating food in plastic or paper containers, keep an eye on the oven due to the
possibility of ignition.
– The microwave oven is intended for heating food and beverages. Drying of food or clothing
and heating of warming pads, slippers, sponges, damp cloth and similar can lead to risk of
injury, ignition or fire.
– If smoke is observed, switch off or unplug the appliance and keep the door closed in order
to stifle any flames.
– Microwave heating of beverages can result in delayed eruptive boiling, therefore care must
be taken when handling the container.
– The contents of feeding bottles and baby food jars shall be stirred or shaken and the
temperature checked before consumption, in order to avoid burns.
– Eggs in their shell and whole hard-boiled eggs should not be heated in microwave ovens
since they can explode, even after microwave heating has ended.
– Details for cleaning door seals, cavities and adjacent parts.
– The oven should be cleaned regularly and any food deposits removed.
– Failure to maintain the oven in a clean condition could lead to deterioration of the surface
that could adversely affect the life of the appliance and possibly result in a hazardous
situation.
– Only use the temperature probe recommended for this oven (for appliances having a facility
to use a temperature-sensing probe).
– The instructions for use for fixed appliances and built-in appliances being used equal or
higher than 900 mm above the floor and having detachable turntables shall state that care
should be taken not to displace the turntable when removing containers from the appliance.
This is not applicable for appliances with horizontal bottom hinged door.
– The appliance shall not be cleaned with a steam cleaner.
If symbol IEC 60417-5041 (2002-10) is marked on the appliance, its meaning shall be explained.

IEC 60335-2-25:2024 © IEC 2024 – 13 –
The manufacturer shall state in the instructions whether the microwave oven is allowed to be
placed or installed less than 850 mm above the floor.
The manufacturer shall state in the instructions whether the microwave oven is intended to be
used freestanding, built-in or in a cabinet. If the appliance can be used while placed in a cabinet,
• the minimum dimensions of the cabinet shall be given by the manufacturer, and
• the instructions shall state that the appliance must be operated with any cabinet door open.
The instructions for microwave ovens having an additional decorative door shall state that the
appliance must be operated with the decorative door open.
The instructions for microwave ovens that are not tested in a cabinet shall state that the
appliance must not be placed in a cabinet.
The instructions for microwave ovens that are not in compliance with 22.118 shall state that
the appliance must not be installed equal or higher than 900 mm above the floor.
7.14 Addition:
The height of the lettering of the warning specified in 7.1 shall be at least 3 mm.
The height of symbol IEC 60417-5041 (2002-10) shall be at least 10 mm.
Compliance is checked by measurement.
7.15 Addition:
If the hot surface marking in 7.1, or symbol IEC 60417-5041 (2002-10) is marked on the
appliance, it shall be visible when the appliance is operated as in normal use, including when
actuating any switch, adjusting any control or opening a lid, drawer or door. It shall not be
placed on surfaces that are exempted from the limits in Table 3 and Table 101.
8 Protection against access to live parts
This clause of Part 1 is applicable except as follows.
8.1.1 Addition:
For part of appliances situated not more than 850 mm above the floor after installation or in
normal use, in addition to the use of test probe 18, test probe 19 of IEC 61032 is also applied
wherever test probe 18 is used and with the same test conditions used for test probe 18.
8.1.3 Addition:
Test probe 19 of IEC 61032 is not applied.
9 Starting of motor-operated appliances
This clause of Part 1 is not applicable.

– 14 – IEC 60335-2-25:2024 © IEC 2024
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.1 Addition:
For inverter type microwave ovens, if the power input varies throughout the operating cycle,
the representative period is considered as specified in 11.7 without the rest periods.
For inverter type microwave ovens, if the power input does not vary throughout the operating
cycle, and for non-inverter type microwave ovens, the power input is measured at the end of
third operating cycle of 11.7.
10.2 Addition:
For inverter type microwave ovens, if the current varies throughout the operating cycle, the
representative period is considered as specified in 11.7 without the rest periods.
For inverter type microwave ovens, if the current does not vary throughout the operating cycle,
and for non-inverter type microwave ovens, the current is measured at the end of the third
operating cycle of 11.7.
11 Heating
This clause of Part 1 is applicable except as follows.
11.2 Addition:
Appliances, other than built-in appliances, are positioned as specified for heating appliances.
A ceiling is placed over the appliance at the minimum height stated in the instructions.
The ceiling has a depth of 300 mm from the back wall of the test corner and a length at least
150 mm in excess of the width of the appliance.
Appliances that can be used when placed in a cabinet are placed in a cabinet with the minimum
dimension given in the instructions by the manufacturer, the plywood specified for the test
corner being used. The appliance is positioned against the rear wall and one of the side walls.
The cabinet door is in the open position.
11.3 Addition:
Where the external accessible surfaces are suitably flat and access permits, the test probe of
Figure 104 is used to measure the temperature rises of external accessible surfaces specified
in Table 101. The probe is applied with a force of 4 N ± 1 N to the surface in such a way that
the best possible contact between the probe and the surface is ensured. The measurement is
performed after a contact period of 30 s.
The probe can be held in place using a laboratory stand clamp or similar device. Any measuring
instrument giving the same results as the probe can be used.

IEC 60335-2-25:2024 © IEC 2024 – 15 –
11.7 Replacement:
Appliances are operated for three cycles with remote operation enabled, if any. Each cycle
consisting of a heating period of 10 min followed by a rest period of 1 min. The last cycle does
not include a rest period of 1 min. During the rest periods, the lid, drawer or door is open, the
remote operation enabled, if any, and the load is replaced.
Appliance outlets accessible to the user and socket-outlets accessible to the user are loaded
with a resistive load that gives the marked outlet load. The current in the appliance outlets and
socket-outlets on the appliance are continuously loaded.
For appliances incorporating integral batteries or separable batteries not disconnected from
the appliance for charging purposes:
– the battery that has been fully discharged is charged for 1 h, while the appliance is
operated as specified, if allowed by the construction of the appliance;
– the battery that has been fully discharged is charged, for a duration of 24 h or until it is
fully charged, whichever is shorter, without the battery-operated appliance performing its
intended function.
11.8 Modification:
Replace the first paragraph by the following text:
During the test, the temperature rises are monitored continuously and shall not exceed the
values shown in Table 3 and Table 101.
Addition:
For Table 3:
– The temperature rises of external surfaces of microwave ovens are only measured on the
surfaces that are not placed against the wall and the floor of the test corner;
– There are no temperature rise limits for air-outlet grilles and for surfaces up to a distance of
25 mm from them.
– When the required values for external enclosure of motor-operated appliances are not
met, the maximum temperature rise shall not exceed the limit by more than 20 K to the
values indicated.
NOTE 101 The temperature rises for handles, knobs, grips and similar parts which are specified in Table 3
apply regardless of their position on the above surfaces.

– 16 – IEC 60335-2-25:2024 © IEC 2024
Table 101 – Maximum temperature rises of external accessible surfaces
under normal operating conditions
Temperature rise of surfaces of Temperature rise of surfaces
appliances allowed to be placed of appl
...