kSIST FprEN IEC 60335-2-26:2025

Household and similar electrical appliances - Safety - Part 2-26: Particular requirements for clocks

This European standard deals with the safety of electric clocks having a rated voltage not more than 250 V including direct current (DC) supplied appliances and battery-operated appliances.

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-26: Besondere Anforderungen für Uhren

Appareils électrodomestiques et analogues - Sécurité - Partie 2-26: Exigences particulières pour les horloges

L'IEC 60335-2-26:2024 traite de la sécurité des horloges électriques dont la tension assignée est inférieure ou égale à 250 V, y compris les appareils alimentés en courant continu et les appareils alimentés par batteries.
La liste suivante répertorie les exemples d'appareils qui relèvent du domaine d'application de la présente norme:
– les réveils;
– les horloges à entraînement par ressort qui comportent un mécanisme de remontage électrique;
– les horloges qui comprennent des moyens d'entraînement autres que des moteurs.
Dans la mesure du possible, la présente norme traite des dangers courants présentés par les appareils, encourus par toutes les personnes 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;
– de l’utilisation de l’appareil comme jouet par des enfants.
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 appareils prévus exclusivement pour des usages industriels;
– 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);
– aux horloges qui disposent d'autres fonctions, associées au non à l'indication de l'heure, telles que les horloges-mères et les minuteries de cuisinières, de machines à laver et d'appareils analogues;
– aux horloges pointeuses;
– aux horloges qui ne comportent que des circuits électroniques (IEC 60065, IEC 62368-1);
– aux montres.
Cette cinquième édition annule et remplace la quatrième édition parue en 2002 et l'Amendement 1:2008. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) alignement sur l'IEC 60335-1:2020;
b) conversion de certaines notes en texte normatif (Article 1);
c) application du calibre d'essai 19 (8.1.1, 20.2, B.22.3, B.22.4);
d) instauration de limites d'échauffement pour les surfaces accessibles extérieures (Article 11).
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.

Gospodinjski in podobni električni aparati - Varnost - 2-26. del: Posebne zahteve za ure

General Information

• Status: Not Published
• Public Enquiry End Date: 30-May-2025
• ICS: 13.120 - Domestic safety
• ICS: 39.040.20 - Clocks
• ICS: 97.040.50 - Small kitchen appliances
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 26-Sep-2025
• Due Date: 14-Nov-2025
• Completion Date: 01-Oct-2025
• Ref Project: EN IEC 60335-2-26:2026 - Household and similar electrical appliances - Safety - Part 2-26: Particular requirements for clocks

Relations

• Amended By: kSIST FprEN IEC 60335-2-26:2025/kFprAA:2025 - Household and similar electrical appliances - Safety - Part 2-26: Particular requirements for clocks
• Effective Date: 05-Oct-2024
• Revises: SIST EN 60335-2-26:2003/A1:2008 - Household and similar electrical appliances - Safety -- Part 2-26: Particular requirements for clocks
• Effective Date: 24-Sep-2024
• Revises: SIST EN 60335-2-26:2003/A11:2020 - Household and similar electrical appliances - Safety - Part 2-26: Particular requirements for clocks
• Effective Date: 24-Sep-2024
• Revises: SIST EN 60335-2-26:2003 - Household and similar electrical appliances - Safety -- Part 2-26: Particular requirements for clocks
• Effective Date: 24-Sep-2024

Overview

kSIST FprEN IEC 60335-2-26:2025 is a European standard developed by the CLC (European Committee for Electrotechnical Standardization) that specifies safety requirements for household and similar electrical appliances, focusing particularly on clocks. This standard applies to electric clocks powered by a rated voltage not exceeding 250 V, including both direct current (DC) supplied and battery-operated clocks. The purpose of this regulation is to ensure the reliable and safe operation of clocks used in residential settings and similar environments.

This latest edition represents a technical revision aligning the requirements with the general IEC 60335-1 standard and introduces updated safety protocols such as temperature rise limits on external surfaces and protection against electrical hazards. It supersedes previous versions released in 2003 and subsequent amendments, reflecting advancements in technology and safety testing methodologies.

Key Topics

• Scope and Coverage: Focuses on clocks under 250 V including battery-powered and DC appliances, ensuring they meet safety criteria suitable for household use.
• Safety Requirements: Protection against access to live parts, limits on surface temperature rises, prevention of electrical shocks, and safeguards during abnormal operation.
• Testing Protocols: Defines testing conditions like endurance tests, moisture resistance, leakage current measurements, transient overvoltage resistance, and heating tests.
• Mechanical Safety: Ensures mechanical strength, stability, and the prevention of mechanical hazards to maintain user safety.
• Battery and Charging Safety: Specific provisions for battery-operated clocks, including charging protocols for metal-ion batteries.
• Marking and Instructions: Requirements for clear user guidance and appliance marking to facilitate safe installation, usage, and maintenance.
• Compliance and Classification: Contains classification rules and criteria for conformity assessment under the electrical safety framework.

Applications

This standard is critical for manufacturers, designers, and testing laboratories involved with the development and certification of electric clocks for household or similar applications. Compliance with kSIST FprEN IEC 60335-2-26:2025 supports:

• Product Safety Certification: Demonstrating adherence to European safety requirements for market access.
• Risk Mitigation: Reducing hazards related to electrical faults, overheating, and mechanical failures in clocks.
• Consumer Protection: Assuring users that clocks meet international safety benchmarks.
• Market Standardization: Harmonizing clock safety standards across European and international markets.
• Design Improvements: Guiding manufacturers on incorporating safety features early in product development.

Related Standards

kSIST FprEN IEC 60335-2-26:2025 should be implemented alongside several related standards to ensure comprehensive safety coverage:

• EN IEC 60335-1: General requirements for household and similar electrical appliances, providing a foundational safety framework.
• IEC 60335 Series: Other parts of the 60335 series address specific household appliances, establishing a harmonized electrotechnical safety system.
• National Standards: Local regulations which may adapt this standard for specific country requirements, including deviations allowed in regions like Japan.
• Battery Standards: For battery-operated clocks, compliance with relevant standards for battery safety and charging is critical.

By adhering to kSIST FprEN IEC 60335-2-26:2025, stakeholders ensure safety, reliability, and conformity for clocks used in everyday life, contributing to a safer and more efficient home electrical environment.

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Keywords: kSIST FprEN IEC 60335-2-26:2025, electrical clock safety, household appliances standard, battery-operated clocks, IEC 60335 series, electrical appliance safety, clocks rated voltage 250V, European electrical standards, appliance safety certification, mechanical hazards in clocks.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60335-2-26:2025
01-maj-2025
Gospodinjski in podobni električni aparati - Varnost - 2-26. del: Posebne zahteve
za ure
Household and similar electrical appliances - Safety - Part 2-26: Particular requirements
for clocks
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-26:
Besondere Anforderungen für Uhren
Appareils électrodomestiques et analogues - Sécurité - Partie 2-26: Exigences
particulières pour les horloges
Ta slovenski standard je istoveten z: prEN IEC 60335-2-26:2025
ICS:
13.120 Varnost na domu Domestic safety
39.040.20 Stenske ure Clocks
oSIST prEN IEC 60335-2-26:2025 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 60335-2-26:2025

oSIST prEN IEC 60335-2-26:2025

EUROPEAN STANDARD DRAFT
prEN IEC 60335-2-26
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2025
ICS 13.120; 97.040.50 Will supersede EN 60335-2-26:2003; EN 60335-2-
26:2003/A1:2008; EN 60335-2-26:2003/A11:2020
English Version
Household and similar electrical appliances - Safety - Part 2-26:
Particular requirements for clocks
(IEC 60335-2-26:2024)
Appareils électrodomestiques et analogues - Sécurité - Sicherheit elektrischer Geräte für den Hausgebrauch und
Partie 2-26: Exigences particulières pour les horloges ähnliche Zwecke - Teil 2-26: Besondere Anforderungen für
(IEC 60335-2-26:2024) Uhren
(IEC 60335-2-26:2024)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2025-06-13.

The text of this draft consists of the text of IEC 60335-2-26:2024 (61/7266/FDIS).

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: 80664 Ref. No. prEN IEC 60335-2-26:2025 E

oSIST prEN IEC 60335-2-26:2025
prEN IEC 60335-2-26:2025 (E)
European foreword
This document (prEN IEC 60335-2-26:2025) consists of the text of document IEC 60335-2-26:2024,
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 60335-2-26:2003 and all of its amendments and corrigenda (if any).
This document is read in conjunction with prEN IEC 60335-2-26:2025/prAA:2025.
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 Annex ZZA, which is an integral part of
prEN IEC 60335-2-26:2025/prAA:2025.

oSIST prEN IEC 60335-2-26:2025

IEC 60335-2-26 ®
Edition 5.0 2024-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –

Part 2-26: Particular requirements for clocks

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-26: Exigences particulières pour les horloges

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.120, 97.040.50 ISBN 978-2-8322-9561-8

oSIST prEN IEC 60335-2-26:2025
– 2 – IEC 60335-2-26:2024 © IEC 2024
CONTENTS
FOREWORD . 4
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 General requirement . 9
5 General conditions for the tests . 9
6 Classification . 9
7 Marking and instructions . 9
8 Protection against access to live parts . 9
9 Starting of motor-operated appliances . 10
10 Power input and current . 10
11 Heating . 10
12 Charging of metal-ion batteries . 11
13 Leakage current and electric strength at operating temperature . 11
14 Transient overvoltages . 11
15 Moisture resistance . 11
16 Leakage current and electric strength . 11
17 Overload protection of transformers and associated circuits . 11
18 Endurance . 11
19 Abnormal operation . 11
20 Stability and mechanical hazards . 11
21 Mechanical strength . 12
22 Construction . 12
23 Internal wiring . 12
24 Components . 12
25 Supply connection and external flexible cords . 12
26 Terminals for external conductors . 13
27 Provision for earthing . 13
28 Screws and connections . 13
29 Clearances, creepage distances and solid insulation . 13
30 Resistance to heat and fire . 13
31 Resistance to rusting . 13
32 Radiation, toxicity and similar hazards . 13
Annexes . 17
Annex B (normative) Battery-operated appliances, separable batteries and detachable
batteries for battery-operated appliances . 18
Bibliography . 19

Figure 101 – Examples of clocks within the scope of this standard. 14
Figure 102 – Examples of clocks out of the scope of this standard . 15
Figure 103 – Probe for measuring surface temperatures . 16

oSIST prEN IEC 60335-2-26:2025
IEC 60335-2-26:2024 © IEC 2024 – 3 –
Table 101 – Maximum temperature rises for specified external accessible surfaces
under normal operating conditions . 10

oSIST prEN IEC 60335-2-26:2025
– 4 – IEC 60335-2-26:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-26: Particular requirements for clocks

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
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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 'èèthereof. 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 60335-2-26 has been prepared by IEC technical committee 61: Safety of household and
similar electrical appliances. It is an International Standard.
This fifth edition cancels and replaces the fourth edition published in 2002 and Amendment 1:
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) conversion of some notes to normative text (Clause 1);
c) application of test probe 19 (8.1.1, 20.2, B.22.3, B.22.4);
d) introduction of limits on the temperature rise of external accessible surfaces (Clause 11).

oSIST prEN IEC 60335-2-26:2025
IEC 60335-2-26:2024 © IEC 2024 – 5 –
The text of this International Standard is based on the following documents:
Draft Report on voting
61/7266/FDIS 61/7284/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 60335 series, under the general title: Household and similar
electrical appliances – Safety, can be found on the IEC website.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments unless that edition precludes it; in that case, the latest edition that does not
preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to convert
that publication into the IEC standard: Particular requirements for clocks.
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
...