EN IEC 60335-2-111:2026

• Abstract:

  This European Standard deals with the safety of electric ondol-mattresses for household and similar purposes, their rated voltage being not more than 250 V including direct current (DC) supplied appliances and battery-operated appliances. This standard also applies to control units supplied with the appliance

• Status: Not Published
• Publication Date: 03-Sep-2026
• ICS: 13.120 - Domestic safety
• ICS: 97.100.10 - Electric heaters
• ICS: 97.140 - Furniture
• Technical Committee: CLC/TC 61 - Safety of household and similar electrical appliances
• Drafting Committee: CLC/TC 61 - Safety of household and similar electrical appliances
• Current Stage: 5060 - Voting results sent to TC, SR - Formal Approval
• Start Date: 19-Jun-2026
• Due Date: 27-Jul-2027
• Completion Date: 19-Jun-2026
• Ref Project: kSIST FprEN IEC 60335-2-111:2026 - Household and similar electrical appliances - Safety - Part 2-111: Particular requirements for electric ondol mattress with a non-flexible heated part

• Refers: EN ISO 2439:2008 - Flexible cellular polymeric materials - Determination of hardness (indentation technique) (ISO 2439:2008)
• Effective Date: 09-Feb-2026
• Amended By: EN IEC 60335-2-111:2026/A11:2026 - Household and similar electrical appliances - Safety - Part 2-111: Particular requirements for electric ondol-mattress with a non-flexible heated part
• Effective Date: 07-Apr-2025
• Revises: EN IEC 60335-2-111:2019 - Household and similar electrical appliances - Safety - Part 2-111: Particular requirements for electric ondol mattress with a non-flexible heated part
• Effective Date: 01-Apr-2025

Overview

EN IEC 60335-2-111:2026 specifies the safety requirements for electric ondol-mattresses containing non-flexible heated parts for household and similar purposes. This European Standard, published by CLC, covers appliances operating at rated voltages up to 250 V, including both direct current (DC) supplied and battery-operated devices. The scope extends to include associated control units supplied with the ondol-mattresses. The standard aims to address common hazards associated with the use of such appliances, particularly those encountered in domestic settings.

Electric ondol-mattresses are specialized bedding products that incorporate a non-flexible heated plate to provide consistent, radiant warmth, following traditional underfloor heating approaches adapted for personal use. EN IEC 60335-2-111:2026 is designed to ensure these appliances can be used safely by consumers, with requirements that also apply to cases where products may be used in community, commercial, or non-residential environments.

Key Topics

EN IEC 60335-2-111:2026 includes several important safety and performance considerations:

• Electrical Safety: Protection against electric shock, leakage currents, and stable electric strength during both normal operation and under fault conditions.
• Thermal Performance: Limits on the maximum temperature of the ondol-mattress’s surface to prevent risks such as heatstroke or burns. This includes specific tests to simulate real-world usage and abnormal scenarios.
• Mechanical and Construction Requirements: Robustness of control units and bed frame structure to avoid hazards due to improper use, accidental falls, or improper placement.
• Control Units: Requirements for detachable or integrated control units to ensure safe regulation of power and user settings, including distinct markings and compatibility information.
• Markings and Instructions: Mandatory manufacturer markings (e.g. rated input, cautionary symbols) and clear instructions within user manuals highlighting key safety and operational limitations.
• Resistance to Moisture and Overheating: Testing for resistance to spills or humidity and the inclusion of safeguards like thermal cut-outs that are not user-resettable.
• Applicability to Both AC and DC Appliances: Includes battery-operated appliances and specifies safety criteria for various power supply configurations.

Applications

This standard is vital for manufacturers, importers, and distributors of electric ondol-mattresses and their control units, ensuring products placed on the European market meet strict safety benchmarks. Key applications include:

• Residential Use: Ensures ondol-mattresses are safe for families, the elderly, and vulnerable users when installed and operated as intended.
• Community and Commercial Settings: Applies to ondol-mattresses used in places like wellness centres, spas, or accommodations in colder climates.
• Product Development and Certification: Serves as the essential reference for designing, testing, and certifying ondol-mattresses before market entry, helping companies comply with CE marking and market surveillance requirements.
• Consumer Protection: Mandates clear user instructions and warnings, reducing risks associated with incorrect installation, misuse by children, or use by persons with reduced sensitivity to heat.

Related Standards

EN IEC 60335-2-111:2026 is part of the broader EN IEC 60335 series governing the safety of household electrical appliances. Manufacturers should also consider the following related standards, especially for products that could fall under other or multiple categories:

• EN IEC 60335-1: General requirements for household and similar electrical appliances.
• EN IEC 60335-2-17: Flexible heating blankets and pads.
• EN IEC 60335-2-30: Room heaters.
• EN IEC 60335-2-66: Water bed heaters.
• EN IEC 60335-2-96: Flexible sheet heating elements for room heating.
• EN IEC 60335-2-81: Foot warmers and heating mats.
• IEC 80601-2-35: Appliances for use under medical supervision.

By following EN IEC 60335-2-111:2026, organizations ensure electric ondol-mattresses with non-flexible heated parts achieve a high level of electrical and thermal safety, supporting consumer confidence and regulatory compliance across the European market.

SLOVENSKI STANDARD
oSIST prEN IEC 60335-2-111:2026
01-januar-2026
Gospodinjski in podobni električni aparati - Varnost - 2-111. del: Posebne zahteve
za grelne vzmetnice s togimi grelnimi elementi
Household and similar electrical appliances - Safety - Part 2-111: Particular requirements
for electric ondol mattress with a non-flexible heated part
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-111:
Besondere Anforderungen für elektrische Ondol-Matratzen mit einem nicht flexiblen
beheizten Teil
Appareils électrodomestiques et analogues - Sécurité - Part 2-111: Exigences
particulières pour les matelas électriques ondol avec une partie chauffée non-flexible
Ta slovenski standard je istoveten z: prEN IEC 60335-2-111:2025
ICS:
13.120 Varnost na domu Domestic safety
97.030 Električni aparati za dom na Domestic electrical
splošno appliances in general
oSIST prEN IEC 60335-2-111:2026 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60335-2-111:2026

oSIST prEN IEC 60335-2-111:2026

EUROPEAN STANDARD DRAFT
prEN IEC 60335-2-111
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2025
ICS 13.120; 97.100.10; 97.140 Will supersede EN IEC 60335-2-111:2019
English Version
Household and similar electrical appliances - Safety - Part 2-111:
Particular requirements for electric ondol mattress with a non-
flexible heated part
(IEC 60335-2-111:2024)
Appareils électrodomestiques et analogues - Sécurité - Part Sicherheit elektrischer Geräte für den Hausgebrauch und
2-111: Exigences particulières pour les matelas électriques ähnliche Zwecke - Teil 2-111: Besondere Anforderungen für
ondol avec une partie chauffée non-flexible elektrische Ondol-Matratzen mit einem nicht flexiblen
(IEC 60335-2-111:2024) beheizten Teil
(IEC 60335-2-111:2024)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-02-13.

The text of this draft consists of the text of IEC 60335-2-111:2024.

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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 81630 Ref. No. prEN IEC 60335-2-111:2025 E

oSIST prEN IEC 60335-2-111:2026
prEN IEC 60335-2-111:2025 (E)
European foreword
This document (prEN IEC 60335-2-111:2025) consists of the text of document IEC 60335-2-111:2024,
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 will supersede EN IEC 60335-2-111:2019 and all of its amendments and corrigenda (if
any).
This document is read in conjunction with prEN IEC 60335-2-111:2025/prAA:2025.

oSIST prEN IEC 60335-2-111:2026

IEC 60335-2-111 ®
Edition 2.0 2024-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-111: Particular requirements for electric ondol mattress with a non-

flexible heated part
Appareils électrodomestiques et analogues – Sécurité –

Partie 2-111: Exigences particulières pour les matelas électriques ondol avec

une partie chauffée non flexible

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120, 97.100.10, 97.140 ISBN 978-2-8322-9752-0

oSIST prEN IEC 60335-2-111:2026
– 2 – IEC 60335-2-111:2024 © 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 . 11
9 Starting of motor-operated appliances . 11
10 Power input and current . 11
11 Heating . 11
12 Charging of metal-ion batteries . 12
13 Leakage current and electric strength at operating temperature . 12
14 Transient overvoltages . 12
15 Moisture resistance . 13
16 Leakage current and electric strength . 13
17 Overload protection of transformers and associated circuits . 13
18 Endurance . 13
19 Abnormal operation . 13
20 Stability and mechanical hazards . 14
21 Mechanical strength . 14
22 Construction . 15
23 Internal wiring . 15
24 Components . 16
25 Supply connection and external flexible cords . 16
26 Terminals for external conductors . 16
27 Provision for earthing . 16
28 Screws and connections . 16
29 Clearances, creepage distances and solid insulation . 17
30 Resistance to heat and fire . 17
31 Resistance to rusting . 17
32 Radiation, toxicity and similar hazards . 17
Annexes . 19
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 20
Annex AA (normative) Specification for thermal insulation . 21
Bibliography . 22

oSIST prEN IEC 60335-2-111:2026
IEC 60335-2-111:2024 © IEC 2024 – 3 –
Figure 101 – Arrangement for measuring leakage current and electric strength of the
ondol-mattress . 18
Figure 102 – Positioning of the thermal insulation on an ondol-mattress incorporating

thermostats . 18

oSIST prEN IEC 60335-2-111:2026
– 4 – IEC 60335-2-111:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-111: Particular requirements for electric ondol-mattress
with a non-flexible heated part

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,
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
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6) All users should ensure that they have the latest edition of this publication.
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members of its technical committees and IEC National Committees for any personal injury, property damage or
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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 60335-2-111 has been prepared by IEC technical committee 61: Safety of household and
similar electrical appliances. It is an International Standard.
This second edition cancels and replaces the first edition published in 2015. 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) conversion of some notes to normative text (Clause 1);
c) application of test probe 19 has been introduced (8.1.1, 20.2, B.22.3, B.22.4).

oSIST prEN IEC 60335-2-111:2026
IEC 60335-2-111:2024 © IEC 2024 – 5 –
The text of this International Standard is based on the following documents:
Draft Report on voting
61/7280/FDIS 61/7303/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: Safety requirements for electric ondol-mattress with a
non-flexible heated part.
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.

oSIST prEN IEC 60335-2-111:2026
– 6 – IEC 60335-2-111:2024 © 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.

oSIST prEN IEC 60335-2-111:2026
IEC 60335-2-111:2024 © 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
...