IEC 60730-2-7:2026
(Main)Automatic electrical controls - Part 2-7: Particular requirements for timers and time switches
Automatic electrical controls - Part 2-7: Particular requirements for timers and time switches
IEC 60730-2-7:2026 applies to timers and time switches:
- for use in, on, or in association with equipment for household appliance and similar use;
NOTE 1 Throughout this document, the word "equipment" means "appliance and equipment" and "controls" means "timer or time switches".
NOTE 2 Throughout this document, the word "timers" means timers and time switches, unless the type is specifically mentioned.
- for building automation within the scope of ISO 16484 series and IEC 63044 series (HBES/BACS);
- or equipment that is used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications;
- that are smart enabled controls;
- that are AC or DC powered controls with a rated voltage not exceeding 690 V AC or 600 V DC;
- utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs;
- as well as manual controls when such are electrically and/or mechanically integral with automatic controls.
NOTE 3 Requirements for manually actuated mechanical switches not forming part of an automatic control are contained in IEC 61058-1-1.
This document applies to
- the inherent safety of timers and time switches, and
- functional safety of timers and time switches and safety related systems,
- timers and time switches where the performance (for example the effect of EMC phenomena) of the product can impair the overall safety and performance of the controlled system,
- the operating values, operating times, and operating sequences where such are associated with equipment safety,
- timers for appliances within the scope of IEC 60335 series.
- manual controls when such are electrically and/or mechanically integral with timers.
This document specifies the requirements for construction, operation and testing of timers and time switches used in, on, or in association with an equipment.
This document does not
- apply to time-delay switches (TDS) within the scope of IEC 60669-2-3;
- include devices which only indicate time or passage of time;
- apply to multi-functional controls having an integrated timing function which is not capable of being tested as a separate timing device.
This fourth edition cancels and replaces the third edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
adoption of IEC 60730-1:2022 (Ed.6.0) with all of its significant changes to IEC 60730 1:2010 (Ed.4).
This part 2-7 is intended to be used in conjunction with IEC 60730-1. It was established on the basis of the sixth edition of that standard (2022). Consideration can be given to future editions of, or amendments to, IEC 60730 1.
This part 2-7 supplements or modifies the corresponding clauses in IEC 60730-1, so as to convert that publication into the IEC standard: Particular requirements for timers and time switches.
Where this part 2-7 states "addition", "modification" or "replacement", the relevant requirement, test specification or explanatory matter in part 1 should be adapted accordingly.
Where no change is necessary, part 2-7 indicates that the relevant clause or subclause applies
Dispositifs de commande électrique automatiques - Partie 2-7: Exigences particulières pour les minuteries et les minuteries cycliques
L'IEC 60730-2-7:2026 s'applique aux minuteries et aux minuteries cycliques:
- utilisées dans, sur ou avec des matériels pour appareils domestiques et à usage analogue;
NOTE 1 Dans le présent document, le terme "matériel" signifie "appareil et matériel" et le terme "dispositifs de commande" signifie "minuteries ou minuteries cycliques".
NOTE 2 Partout où il est utilisé dans le présent document, le terme "minuteries" signifie minuteries et minuteries cycliques, sauf si le type est clairement précisé.
- pour l'automatisation des bâtiments qui relèvent du domaine d'application de la série ISO 16484 et de la série IEC 63044 (HBES/BACS);
- pour des matériels utilisés par le public, tels que les matériels destinés à être utilisés dans des magasins, des bureaux, des hôpitaux, des fermes et des applications commerciales et industrielles;
- qui sont des dispositifs de commande activés intelligents;
- qui sont des dispositifs de commande à courant alternatif ou continu dont la tension assignée ne dépasse pas 690 V en courant alternatif ou 600 V en courant continu;
- qui sont utilisés dans le cadre d'un système de commande ou de dispositifs de commande qui sont mécaniquement intégrés à des dispositifs de commande multifonctions comportant des sorties non électriques;
ainsi qu'aux dispositifs de commande manuels qui sont électriquement et/ou mécaniquement intégrés à des dispositifs de commande automatique.
NOTE 3 Les exigences relatives aux interrupteurs mécaniques à action manuelle qui ne font pas partie d'un dispositif de commande automatique sont contenues dans l'IEC 61058-1-1.
Le présent document s'applique
- à la sécurité intrinsèque des minuteries et des minuteries cycliques, et
- à la sécurité fonctionnelle des minuteries et des minuteries cycliques et aux systèmes de sécurité,
- aux minuteries et minuteries cycliques pour lesquelles les performances (par exemple, l'effet des phénomènes CEM) du produit peuvent compromettre la sécurité et les performances globales du système commandé,
- aux valeurs de fonctionnement, aux temps de fonctionnement et aux séquences de fonctionnement lorsque ces éléments interviennent dans la sécurité du matériel,
- aux minuteries destinées aux appareils relevant du domaine d'application de la série IEC 60335.
- aux dispositifs de commande manuels qui sont électriquement et/ou mécaniquement intégrés à des minuteries.
Le présent document spécifie les exigences relatives à la construction, au fonctionnement et aux essais des minuteries et minuteries cycliques utilisées dans, sur ou avec des matériels.
Le présent document
- ne s'applique pas aux interrupteurs temporisés (TDS, Time-Delay Switches) qui relèvent du domaine d'application de l'IEC 60669-2-3;
- ne couvre pas les appareils qui n'indiquent que le temps ou le temps écoulé;
- ne s'applique pas aux dispositifs de commande multifonctions dont la fonction de minuterie intégrée ne peut pas être soumise aux essais comme un dispositif de minuterie séparé.
Cette quatrième édition annule et remplace la troisième édition parue en 2015. Cette édition constitue une révision technique.
Cette édition inclut modifications techniques significatives suivantes par rapport à l'édition précédente:
a) adoption de l'IEC 60730-1:2022 (Ed.6.0) avec toutes ses modifications significatives apportées à l'IEC 60730‑1:2010 (Ed.4).
La présente partie 2-7 est destinée à être utilisée conjointement avec l'IEC 60730-1. Elle a été établie sur la base de la sixième édition de cette norme (2022). Les futures éditions de l'IEC 60730‑1 ou de ses amendements pourront être pris en considération.
La présente partie 2-7 complète ou modifie les articles correspondants de l'IEC 60730-1, de façon à transformer cette publication en norme IEC: Exigences particulières pour les minuteries et les minuteries cycliques.
Lorsque la présente partie 2-7 spécifie "addition", "modification" ou "remplacement", il convient d'adapter l'exigence, la modalité d'essai ou les commentai
General Information
- Status
- Published
- Publication Date
- 06-Apr-2026
- Technical Committee
- TC 72 - Automatic electrical controls
- Drafting Committee
- WG 5 - TC 72/WG 5
- Current Stage
- PPUB - Publication issued
- Start Date
- 07-Apr-2026
- Completion Date
- 01-May-2026
Relations
- Effective Date
- 24-May-2024
Overview
IEC 60730-2-7:2026 is the fourth edition of the international standard published by the International Electrotechnical Commission (IEC) that specifies particular requirements for automatic electrical controls, with a focus on timers and time switches used in household appliances, building automation systems, and various commercial or industrial settings. This standard establishes safety and performance criteria for devices integral to both manual and automatic control of electrical equipment, supporting both smart-enabled and conventional controls powered by AC or DC up to 690 V AC or 600 V DC.
The document is developed to supplement and modify the general requirements found in IEC 60730-1:2022, addressing unique risks, construction, testing, and application factors specific to timers and time switches. IEC 60730-2-7:2026 is applicable to controls associated with appliances and systems ranging from domestic equipment to environments such as offices, hospitals, farms, and industrial facilities.
Key Topics
The standard covers a wide range of important aspects for manufacturers, system integrators, and compliance officers working with timers and time switches, including:
- Scope and application for controls used in household appliances, professional equipment, and building automation systems (e.g., those conforming to ISO 16484 and IEC 63044).
- Safety requirements
- Inherent safety of devices
- Functional safety, including systems where poor performance may impact overall operational safety
- Thorough electrical protection (against shock, overheating, moisture, and dust)
- Smart-enabled controls, covering integration with automated or interconnected systems
- Constructional and operational requirements
- Materials, mounting, and enclosure provisions
- Requirements for manual and multifunctional controls with integrated timing functionality
- Testing and documentation
- Marking and labeling
- Endurance and mechanical strength
- Environmental stress and resistance to heat, fire, and corrosion
- Electromagnetic compatibility (EMC) requirements to ensure devices perform reliably and do not interfere with other electronics in their environment
- Fault assessment methodologies for electronic circuits ensuring both normal and abnormal operation is safe
- Exclusions
- Devices solely indicating time or passage of time
- Time-delay switches under IEC 60669-2-3
- Multifunctional controls with non-verifiable timing functions
Applications
IEC 60730-2-7:2026 is a critical reference for:
- Manufacturers of timers and time switches intended for integration into home appliances (such as washing machines, ovens, HVAC equipment), building management systems, and publicly used equipment.
- System integrators involved in building automation and home electronic systems (HBES/BACS) to ensure compliance and interoperability in modern smart buildings.
- Product safety and compliance engineers who require robust documentation to facilitate conformity assessment and global market access.
- Designers of multifunctional controls that require a timer or time switch function as an integrated part of appliance or system controls.
- Industrial and commercial automation experts needing to specify reliable timing solutions in management or safety-related systems.
- Entities working with control systems subject to international regulation, where performance and safety of switching and timing functions are paramount.
Related Standards
To effectively implement and demonstrate compliance with IEC 60730-2-7:2026, the following related standards should be considered:
- IEC 60730-1:2022 - General requirements for automatic electrical controls
- IEC 60335 series - Safety of household and similar electrical appliances
- ISO 16484 series - Building automation and control systems (BACS)
- IEC 63044 series - Home and Building Electronic Systems (HBES)
- IEC 61058-1-1 - Switches for appliances, requirements for manually actuated mechanical switches
- IEC 60669-2-3 - Specification for particular requirements for time-delay switches
IEC 60730-2-7:2026 offers essential guidance for ensuring product safety, functional reliability, and regulatory compliance of timers and time switches across a broad spectrum of applications, facilitating global market acceptance and enhanced system integration in the age of smart automation.
Buy Documents
IEC 60730-2-7:2026 EXV - Automatic electrical controls - Part 2-7: Particular requirements for timers and time switches
IEC 60730-2-7:2026 - Dispositifs de commande électrique automatiques - Partie 2-7: Exigences particulières pour les minuteries et les minuteries cycliques
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Frequently Asked Questions
IEC 60730-2-7:2026 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Automatic electrical controls - Part 2-7: Particular requirements for timers and time switches". This standard covers: IEC 60730-2-7:2026 applies to timers and time switches: - for use in, on, or in association with equipment for household appliance and similar use; NOTE 1 Throughout this document, the word "equipment" means "appliance and equipment" and "controls" means "timer or time switches". NOTE 2 Throughout this document, the word "timers" means timers and time switches, unless the type is specifically mentioned. - for building automation within the scope of ISO 16484 series and IEC 63044 series (HBES/BACS); - or equipment that is used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications; - that are smart enabled controls; - that are AC or DC powered controls with a rated voltage not exceeding 690 V AC or 600 V DC; - utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs; - as well as manual controls when such are electrically and/or mechanically integral with automatic controls. NOTE 3 Requirements for manually actuated mechanical switches not forming part of an automatic control are contained in IEC 61058-1-1. This document applies to - the inherent safety of timers and time switches, and - functional safety of timers and time switches and safety related systems, - timers and time switches where the performance (for example the effect of EMC phenomena) of the product can impair the overall safety and performance of the controlled system, - the operating values, operating times, and operating sequences where such are associated with equipment safety, - timers for appliances within the scope of IEC 60335 series. - manual controls when such are electrically and/or mechanically integral with timers. This document specifies the requirements for construction, operation and testing of timers and time switches used in, on, or in association with an equipment. This document does not - apply to time-delay switches (TDS) within the scope of IEC 60669-2-3; - include devices which only indicate time or passage of time; - apply to multi-functional controls having an integrated timing function which is not capable of being tested as a separate timing device. This fourth edition cancels and replaces the third edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: adoption of IEC 60730-1:2022 (Ed.6.0) with all of its significant changes to IEC 60730 1:2010 (Ed.4). This part 2-7 is intended to be used in conjunction with IEC 60730-1. It was established on the basis of the sixth edition of that standard (2022). Consideration can be given to future editions of, or amendments to, IEC 60730 1. This part 2-7 supplements or modifies the corresponding clauses in IEC 60730-1, so as to convert that publication into the IEC standard: Particular requirements for timers and time switches. Where this part 2-7 states "addition", "modification" or "replacement", the relevant requirement, test specification or explanatory matter in part 1 should be adapted accordingly. Where no change is necessary, part 2-7 indicates that the relevant clause or subclause applies
IEC 60730-2-7:2026 applies to timers and time switches: - for use in, on, or in association with equipment for household appliance and similar use; NOTE 1 Throughout this document, the word "equipment" means "appliance and equipment" and "controls" means "timer or time switches". NOTE 2 Throughout this document, the word "timers" means timers and time switches, unless the type is specifically mentioned. - for building automation within the scope of ISO 16484 series and IEC 63044 series (HBES/BACS); - or equipment that is used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications; - that are smart enabled controls; - that are AC or DC powered controls with a rated voltage not exceeding 690 V AC or 600 V DC; - utilized as part of a control system or controls which are mechanically integral with multifunctional controls having non-electrical outputs; - as well as manual controls when such are electrically and/or mechanically integral with automatic controls. NOTE 3 Requirements for manually actuated mechanical switches not forming part of an automatic control are contained in IEC 61058-1-1. This document applies to - the inherent safety of timers and time switches, and - functional safety of timers and time switches and safety related systems, - timers and time switches where the performance (for example the effect of EMC phenomena) of the product can impair the overall safety and performance of the controlled system, - the operating values, operating times, and operating sequences where such are associated with equipment safety, - timers for appliances within the scope of IEC 60335 series. - manual controls when such are electrically and/or mechanically integral with timers. This document specifies the requirements for construction, operation and testing of timers and time switches used in, on, or in association with an equipment. This document does not - apply to time-delay switches (TDS) within the scope of IEC 60669-2-3; - include devices which only indicate time or passage of time; - apply to multi-functional controls having an integrated timing function which is not capable of being tested as a separate timing device. This fourth edition cancels and replaces the third edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: adoption of IEC 60730-1:2022 (Ed.6.0) with all of its significant changes to IEC 60730 1:2010 (Ed.4). This part 2-7 is intended to be used in conjunction with IEC 60730-1. It was established on the basis of the sixth edition of that standard (2022). Consideration can be given to future editions of, or amendments to, IEC 60730 1. This part 2-7 supplements or modifies the corresponding clauses in IEC 60730-1, so as to convert that publication into the IEC standard: Particular requirements for timers and time switches. Where this part 2-7 states "addition", "modification" or "replacement", the relevant requirement, test specification or explanatory matter in part 1 should be adapted accordingly. Where no change is necessary, part 2-7 indicates that the relevant clause or subclause applies
IEC 60730-2-7:2026 is classified under the following ICS (International Classification for Standards) categories: 97.120 - Automatic controls for household use. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60730-2-7:2026 has the following relationships with other standards: It is inter standard links to IEC 60730-2-7:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
IEC 60730-2-7:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
IEC 60730-2-7 ®
Edition 4.0 2026-04
INTERNATIONAL
STANDARD
EXTENDED VERSION
This full version of IEC 60730-2-7:2026 includes the content of the references made to
IEC 60730-1:2022
Automatic electrical controls -
Part 2-7: Particular requirements for timers and time switches
ICS 97.120 ISBN 978-2-8327-1195-8
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CONTENTS
FOREWORD . 9
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 17
3.1 Definitions relating to ratings, voltages, currents, frequencies, and wattages . 17
3.2 Definitions of types of control according to purpose . 19
3.3 Definitions relating to the function of controls . 21
3.4 Definitions relating to disconnection and interruption . 24
3.5 Definitions of types of control according to construction . 26
3.6 Definitions of type of automatic action of a control . 27
3.7 Definitions relating to protection against electric shock and type of insulation . 27
3.8 Definitions relating to component parts of controls . 31
3.9 Definitions of types of terminals and terminations of controls . 33
3.10 Definitions relating to the connections to controls . 34
3.11 Definitions relating to the performance of type 2 actions . 36
3.12 Definitions relating to the requirements for creepage distances and
clearances . 36
3.13 Miscellaneous definitions . 37
3.14 Definitions relating to manufacturer and user . 38
3.15 Definitions pertaining to thermistors . 39
3.16 Definitions relating to the structure of controls using software . 39
3.17 Definitions relating to error avoidance in controls using software . 39
3.18 Definitions relating to fault/error control techniques for controls using
software . 39
3.19 Definitions relating to memory tests for controls using software . 39
3.20 Definitions of software terminology – General . 39
3.21 Definitions relating to classes of control functions . 39
3.22 Definitions relating to functional safety . 39
3.23 Definitions related to access to data exchange . 39
3.24 Definitions related to EMC performance . 39
4 General . 42
4.1 General structure of the document . 42
4.2 General requirements . 43
4.3 General notes on tests . 43
5 Required technical information . 47
5.1 General requirements . 47
5.2 Methods of providing technical information . 47
5.3 Class II symbol . 55
5.4 Additional requirements for marking . 55
5.5 Warning or cautionary markings . 57
6 Protection against electric shock . 57
6.1 General requirements . 57
6.2 Actuating members and actuating means . 59
6.3 Capacitors . 60
6.4 Covers and uninsulated live or hazardous parts . 60
6.5 Battery operated controls provided with a user accessible mains supply input
connector . 60
7 Provision for protective earthing . 61
7.1 Class 0I and Class I controls. 61
7.2 Class II and class III controls . 61
7.3 Adequacy of earth connections . 61
7.4 Corrosion resistance . 62
7.5 Other requirements . 63
7.6 Protective equipotential bonding . 63
8 Terminals and terminations. 63
8.1 Terminals and terminations for external copper conductors . 63
8.2 Terminals and terminations for internal conductors . 68
8.3 Terminals and terminations for integrated conductors . 70
9 Constructional requirements . 70
9.1 Materials . 70
9.2 Protection against electric shock . 70
9.3 Actuation and operation . 73
9.4 Actions . 76
9.5 Openings in enclosures . 79
9.6 Mounting of controls . 79
9.7 Attachment of cords . 81
9.8 Size of cords – non-detachable . 82
9.9 Inlet openings . 82
9.10 Equipment inlets and socket-outlets . 83
9.11 Requirements during mounting, use, maintenance and servicing . 84
9.12 Controls using software . 86
9.13 Protective controls and components of protective control systems . 89
10 Threaded parts and connections . 91
10.1 Threaded parts moved during mounting or servicing . 91
10.2 Current-carrying connections and connections providing protective earthing
continuity . 93
11 Creepage distances, clearances and distances through solid insulation . 94
11.1 General . 94
11.2 Clearances . 95
11.3 Creepage distances . 99
11.4 Solid insulation . 103
12 Components . 104
12.1 Transformers . 104
12.2 Switch mode power supplies and converters . 104
12.3 Capacitors . 105
12.4 Fuses . 105
12.5 Varistors . 105
12.6 Thermistors. 105
12.7 Relays . 106
12.8 Other components . 106
13 Fault assessment on electronic circuits . 106
13.1 Fault assessment for inherent safety . 106
13.2 Fault assessment to ensure functional safety . 112
14 Moisture and dust resistance . 112
14.1 Protection against ingress of water and dust . 112
14.2 Protection against humid conditions . 113
14.3 Touch current test for in-line cord controls and free-standing controls . 114
15 Electric strength and insulation resistance . 115
15.1 Insulation resistance . 115
15.2 Electric strength . 115
15.3 Additional tests for in-line cord and free-standing controls . 117
16 Heating . 118
17 Manufacturing deviation and drift . 122
18 Environmental stress . 122
18.1 Transportation and storage . 122
18.2 Environmental stress of temperature . 122
19 Endurance . 123
19.1 General requirements . 123
19.2 Electrical conditions for the tests . 125
19.3 Thermal conditions for the tests . 132
19.4 Manual and mechanical conditions for the tests . 132
19.5 Dielectric strength requirements. 133
19.6 Ageing test . 133
19.7 Overvoltage test or overload test in all countries using an overload test of
automatic action at accelerated rate . 133
19.8 Test of automatic action at accelerated rate . 134
19.9 Test of automatic action at slow rate . 134
19.10 Overvoltage test or overload test in all countries that use the overload test of
manual action at accelerated speed . 135
19.11 Test of manual action at slow speed . 135
19.12 Test of manual action at high speed which has multiple poles, and where
polarity reversal occurs during the action . 135
19.13 Test of manual action at accelerated speed . 135
19.14 Evaluation of compliance . 136
19.15 Test for particular purpose controls . 136
20 Mechanical strength . 138
20.1 General requirements . 138
20.2 Impact resistance . 139
20.3 Free-standing controls . 139
20.4 In-line cord controls . 140
20.5 Pull-cord actuated controls . 140
20.6 Foot actuated controls . 141
20.7 Actuating member and actuating means . 141
20.8 Flexing – test . 141
20.9 Cord anchorages – test . 142
21 Resistance to heat, fire and tracking . 142
21.1 General requirements . 142
21.2 Integrated, incorporated and in-line cord controls. 143
21.3 Independently mounted, free-standing controls . 144
22 Resistance to corrosion . 144
22.1 Resistance to rusting . 144
23 Electromagnetic compatibility (EMC) requirements – Emission . 145
23.1 General requirement . 145
23.2 High frequency emission . 145
23.3 Low frequency emission . 149
24 Normal operation . 149
25 Electromagnetic compatibility (EMC) requirements – Immunity . 149
25.1 General . 149
25.2 EMC test plan and report . 150
25.3 Immunity requirements . 152
25.4 Performance criteria . 155
25.5 Surge immunity test . 156
25.6 Electrical fast transient immunity test . 156
25.7 Radio-frequency electromagnetic field immunity . 157
25.8 Electrostatic discharge . 157
25.9 Immunity to power-frequency magnetic fields . 157
25.10 Test of the influence of voltage dips and voltage interruption in the power
supply network . 158
26 Abnormal operation tests . 158
26.1 Abnormal temperature test . 158
26.2 Overload tests . 159
26.3 Battery short-circuit test . 160
Annex A (normative) Indelibility of markings . 177
Annex B (normative) Measurement of creepage distances and clearances in air . 179
Annex C (informative) Nominal voltages of supply systems for different modes of
overvoltage control . 183
Annex D (normative) Overvoltage categories . 185
Annex E (informative) Typical usage of controls and related overvoltage categories . 186
Annex F (normative) Pollution degrees . 187
F.1 Pollution . 187
F.2 Degrees of pollution in the micro-environment . 187
Annex G (normative) Resistance to heat, fire and tracking tests . 188
G.1 Glow-wire test . 188
G.2 Proof tracking test . 188
G.3 Ball pressure test . 188
Annex H (normative) Requirements related to functional safety . 190
H.3 Terms and definitions. 190
H.5 Information . 201
H.9 Constructional requirements . 202
H.13 Fault assessment on electronic circuits . 219
H.17 Manufacturing deviation and drift . 222
H.19 Endurance . 224
H.25 Electromagnetic compatibility (EMC) requirements – Immunity. 225
Annex I (normative) Requirements for certain types of DC supplied controls . 237
I.1 Scope . 237
Annex J (normative) Requirements for thermistor elements and controls using
thermistors. 239
J.1 Scope . 239
Annex K (normative) Circuit for measuring touch current . 256
Annex L (normative) Printed circuit board coating performance test . 257
Annex M (normative) Printed circuit board protection . 259
Annex N (informative) Explanatory notes for surge immunity test . 262
N.1 Different source impedances . 262
N.2 Application of the tests. 262
N.3 Installation classification . 263
Annex O (informative) Guidance for applying Clause 11 . 266
Annex P (normative) Requirements for SELV and PELV . 269
P.1 Overview of the requirements for SELV and PELV . 269
P.2 Protection against electric shock by SELV system or PELV system . 269
P.3 Protective measures for SELV system and PELV system . 270
Annex Q (informative) Regional differences relevant for the member countries of
Cenelec . 272
Annex R (informative) National differences relevant in the United States of America . 277
R.2 Normative references . 277
Annex S (informative) National differences relevant in Japan . 278
S.2 Normative references . 278
Annex T (informative) National differences relevant in Canada . 279
T.2 Normative references . 279
Annex AA (normative) Number of cycles, automatic and manual action . 280
Bibliography . 281
Figure 1 – Example of ports . 40
Figure 2 – Structure of the document with respect to inherent safety and functional
safety . 43
Figure 3 – Example of an electronic circuit with low power points . 107
Figure 4 – Test pin probe 13 of IEC 61032:1997 . 160
Figure 5 – Test finger probe B of IEC 61032:1997 . 161
Figure 6 – Test fingernail . 162
Figure 7 – Impact test for free-standing controls . 163
Figure 8 – Tumbling barrel . 163
Figure 9 – Apparatus for testing durability of markings on rating labels . 164
Figure 10 – Apparatus for flexing test . 164
Figure 11 – Screw terminals and stud terminals . 165
Figure 12 – Pillar terminals . 166
Figure 13 – Mantle terminals . 167
Figure 14 – Saddle and lug terminals . 168
Figure 15 – Tabs. 169
Figure 16 – Tabs for non-reversible connectors . 170
Figure 17 – Receptacles . 171
Figure 18 – Measurement of creepage distance and clearance . 172
Figure 19 – Diagram for touch current measurement at operating temperature for
single-phase connection of class II controls . 173
Figure 20 – Diagram for touch current measurement at operating temperature for
single-phase connection of controls other than class II . 173
Figure 21 – Diagram for touch current measurement at operating temperature for
three-phase connection of class II controls . 174
Figure 22 – Diagram for touch current measurement at operating temperature for
three-phase connection of controls other than class II . 175
Figure 23 – Diagram for touch current measurement at operating temperature for
single-phase connection of controls to three-wire, ground neutral supply other than
class II . 175
Figure 24 – Diagram for touch current measurement at operating temperature for
two‑phase connection of controls to three-wire, ground neutral supply other
than class II . 176
Figure B.1 – Narrow groove . 180
Figure B.2 – Wide groove . 180
Figure B.3 – V-shaped groove . 180
Figure B.4 – Rib . 180
Figure B.5 – Uncemented joint with narrow groove . 181
Figure B.6 – Uncemented joint with wide groove . 181
Figure B.7 – Uncemented joint with narrow and wide grooves . 181
Figure B.8 – Diverging side walls . 182
Figure B.9 – Narrow recess . 182
Figure B.10 – Wide recess . 182
Figure B.11 – Conductive floating part . 182
Figure H.1 – V-Model for the software life cycle . 210
Figure H.2 – Voltage variation test . 228
Figure J.1 – Generic test circuit for inrush-current limiting thermistor endurance test . 255
Figure K.1 – Circuit for measuring touch currents . 256
Figure L.1 – Test sample . 258
Figure M.1 – Example of type 1 protection . 260
Figure M.2 – Example of type 2 protection . 261
Figure N.1 – Example of surge protection by shielding in buildings with common earth
reference systems . 264
Figure N.2 – Example of secondary surge protection in buildings with separate
common earth reference systems . 265
Figure N.3 – Example of primary and secondary surge protection of indoor/outdoor
equipment . 265
Figure O.1 – Guidance flowchart for application of requirements of Clause 11 . 267
Table 1 – Required technical information and methods of providing these information . 50
Table 2 – Cross-sectional area of conductors . 64
Table 3 – Terminal conductors . 66
Table 4 – Conductor pull test values . 66
Table 5 – Nominal cross-sectional areas of conductors . 68
Table 6 – Axial force values for tab insertion and withdrawal . 69
Table 7 – Minimum cord conductor sizes . 82
Table 8 – Data exchange . 87
Table 9 – Threaded parts torque test values . 93
Table 10 – Rated impulse voltage for equipment energized directly from the supply
mains (from IEC 60664-1:2007, Table F.1) . 96
Table 11 – Clearances for insulation co-ordination (from IEC 60664-1:2007, Table F.2). 97
Table 12 – Minimum creepage distances for basic insulation . 101
Table 13 – Minimum creepage distances for functional insulation . 102
Table 14 – Electrical/electronic component fault modes . 108
Table 15 – Minimum insulation resistance . 115
Table 16 – Insulation or disconnection test voltages . 116
Table 17 – Maximum heating temperatures . 120
Table 18 – Electrical conditions for the overvoltage and endurance tests . 127
Table 19 – Electrical conditions for the overload tests of 19.7 and 19.10 . 129
Table 20 – Electrical conditions for the endurance tests of 19.8, 19.9, 19.11, 19.12 and
19.13 . 131
Table 21 – Pull-cord force test values . 140
Table 22 – Pull and torque values . 142
Table 23 – Emission limit for residential electromagnetic environment . 147
Table 24 – Emission limit for industrial electromagnetic environment . 148
Table 25 – The applicable EMC test in relation to the class of control function and type
of Action . 150
Table 26 – Immunity test requirements for residential electromagnetic environments . 152
Table 27 – Immunity test requirements for industrial electromagnetic environment . 154
Table 28 – Performance criteria . 156
Table 29 – Maximum winding temperature (for test of mechanical blocked output
conditions) . 159
Table B.1 – Value of X . 179
Table C.1 – Inherent control or equivalent protective control . 183
Table C.2 – Cases where protective control is necessary and control is provided by
surge arresters having a ratio of clamping voltage to rated voltage not smaller than
that specified by IEC 60099-1 . 184
Table E.1 – Typical usage. 186
Table H.1 – Additional items to Table 1 . 201
a
Table H.2 – Acceptable measures to address fault/errors . 204
Table H.3 – Examples of techniques/measures for semi-formal methods . 211
Table H.4 – Examples of techniques/measures for software architecture specification . 211
Table H.5 – Examples of techniques/measures for module design specification . 212
Table H.6 – Examples of techniques/measures for design and coding standards . 212
Table H.7 – Examples of techniques/measures for software module testing . 213
Table H.8 – Examples of techniques/measures for software integration testing . 214
Table H.9 – Examples of techniques/measures for software safety validation . 214
Table H.10 – Combinations of analytical measures during hardware development . 216
Table H.11 – Examples of defences against unauthorised access and transmission
failure modes . 217
Table H.12 – Applicable test levels in addition to Clause 25. 225
Table H.13 – Voltage dips, short interruptions and voltage variations . 226
Table H.14 – Test values for voltage variations . 227
Table H.15 – Test voltages for test level 2 (depending on the installation class
conditions) . 230
Table H.16 – Test level for electrical fast transient burst test . 231
Table H.17 – Test levels for conducted disturbances on mains and I/O lines . 232
Table H.18 – Test level for immunity to radiated electromagnetic fields . 233
Table H.19 – Increased test level for radiated immunity . 234
Table H.20 – Test level for supply frequency variations . 235
Table H.21 – Test level for continuous fields . 235
Table I.1 – Electrical transient conduction immunity in accordance with ISO 7637-2 . 237
Table I.2 – Electrical transient conduction immunity in accordance with ISO 7637-3 . 238
Table J.1 – Maximum current . 241
Table J.2 – Normal operating conditions . 242
Table J.3 – Samples for the test (clause reference) . 243
Table J.4 – Electrical and thermal ratings of a thermistor . 244
Table J.5 – Additional items to Table 1 . 245
Table J.6 – Sequence of calibration and conditioning tests for PTC thermistors . 247
Table J.7 – Classes for PTC sensing thermistors . 248
Table J.8 – Sequence of calibration and conditioning tests for NTC thermistors . 249
Table J.9 – Classes for NTC sensing thermistors . 249
Table J.10 – Number of cycles for endurance test . 253
Table J.11 – Ageing test temperature . 253
Table J.12 – Number of cycles for endurance test . 254
Table L.1 – Environmental cycling conditions . 257
Table M.1 – IEC 60664-3 test levels or conditions . 259
Table O.1 – Example A – Using Annex O guidance for applying Clause 11 . 268
Table O.2 – Example B – Using Annex O guidance for applying Clause 11 . 268
Table Q.1 – Additional aging parameters for windings . 273
Table AA.1 – Values for free standing, independently mounted and in-line cord timers
a
and time switches . 280
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-7: Particular requirements for timers and time switches
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
...
IEC 60730-2-7 ®
Edition 4.0 2026-04
NORME
INTERNATIONALE
Dispositifs de commande électrique automatiques -
Partie 2-7: Exigences particulières pour les minuteries et les minuteries
cycliques
ICS 97.120 ISBN 978-2-8327-1173-6
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SOMMAIRE
AVANT-PROPOS . 2
1 Domaine d’application . 5
2 Références normatives . 6
3 Termes et définitions . 6
4 Généralités . 6
5 Informations techniques exigées . 7
6 Protection contre les chocs électriques . 7
7 Dispositions en vue de la mise à la terre de protection . 7
8 Bornes et connexions . 7
9 Exigences de construction . 7
10 Parties filetées et connexions . 9
11 Lignes de fuite, distances dans l'air et distances à travers l'isolation solide . 9
12 Éléments constituants . 9
13 Évaluation des pannes sur les circuits électroniques . 9
14 Résistance à l'humidité et à la poussière . 9
15 Résistance d'isolement et rigidité diélectrique . 9
16 Échauffements . 9
17 Tolérances de fabrication et dérive . 9
18 Contraintes climatiques . 10
19 Endurance . 10
20 Résistance mécanique. 14
21 Résistance à la chaleur, au feu et aux courants de cheminement . 14
22 Résistance à la corrosion . 14
23 Exigences de compatibilité électromagnétique (CEM) – Émission . 14
24 Fonctionnement normal . 14
25 Exigences de compatibilité électromagnétique (CEM) – Immunité . 15
26 Essais en fonctionnement anormal . 15
Annexes . 16
Annexe H (normative) Exigences relatives à la sécurité fonctionnelle . 17
Annexe Q (informative) Différences régionales pertinentes pour les pays membres du
CENELEC . 19
Annexe R (informative) Différences nationales applicables aux États-Unis . 20
Annexe S (informative) Différences nationales applicables au Japon . 21
Annexe T (informative) Différences nationales applicables au Canada . 22
Annexe AA (normative) Nombre de cycles, action automatique et manuelle . 23
Bibliographie . 24
Tableau 1 – Informations techniques exigées et méthodes pour fournir ces
informations . 7
Tableau AA.1 – Valeurs relatives aux minuteries et minuteries cycliques séparées, à
a
montage indépendant et intercalées dans un câble souple . 23
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
Dispositifs de commande électrique automatiques -
Partie 2-7: Exigences particulières pour les minuteries
et les minuteries cycliques
AVANT-PROPOS
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L'IEC 60730-2-7 a été établie par le comité d'études 72 de l'IEC: Commandes électriques
automatiques. Il s'agit d'une Norme internationale.
Cette quatrième édition annule et remplace la troisième édition parue en 2015. Cette édition
constitue une révision technique.
Cette édition inclut modifications techniques significatives suivantes par rapport à l'édition
précédente:
a) adoption de l'IEC 60730-1:2022 (Ed.6.0) avec toutes ses modifications significatives
apportées à l'IEC 60730-1:2010 (Ed.4).
Le texte de cette Norme internationale est issu des documents suivants:
Projet Rapport de vote
72/1526/FDIS 72/1537/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à son approbation.
La langue employée pour l'élaboration de cette Norme internationale est l'anglais.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2, il a été développé selon les
Directives ISO/IEC, Partie 1 et les Directives ISO/IEC, Supplément IEC, disponibles sous
www.iec.ch/members_experts/refdocs. Les principaux types de documents développés par
l'IEC sont décrits plus en détail sous www.iec.ch/publications.
La présente partie 2-7 est destinée à être utilisée conjointement avec l'IEC 60730-1. Elle a été
établie sur la base de la sixième édition de cette norme (2022). Les futures éditions de
l'IEC 60730-1 ou de ses amendements pourront être pris en considération.
La présente partie 2-7 complète ou modifie les articles correspondants de l'IEC 60730-1, de
façon à transformer cette publication en norme IEC: Exigences particulières pour les minuteries
et les minuteries cycliques.
Lorsque la présente partie 2-7 spécifie "addition", "modification" ou "remplacement", il convient
d'adapter l'exigence, la modalité d'essai ou les commentaires correspondants de la Partie 1 en
conséquence.
Lorsqu'aucune modification n'est nécessaire, la partie 2-7 indique que l'article ou le paragraphe
approprié s'applique.
Afin d'établir une norme de portée internationale, il a été nécessaire de prendre en compte les
exigences divergentes qui résultent de l'expérience acquise en pratique dans différentes
régions du monde et de reconnaître les différences nationales qui existent entre les réseaux
d'alimentation électrique et entre les règles d'installation.
L'attention du lecteur est attirée sur le fait que l'Annexe Q, l'Annexe R, l'Annexe S et l'Annexe T
donnent une liste de tous les articles qui traitent des différences de pratiques à caractère moins
permanent qui existent dans certains pays dans le domaine couvert par le présent document.
Dans cette publication, les caractères d'imprimerie suivants sont utilisés:
– exigences proprement dites: caractères romains;
– modalités d'essais: caractères italiques;
– commentaires: petits caractères romains;
– termes définis: caractères gras.
Les paragraphes, notes ou éléments qui s'ajoutent à ceux de la Partie 1 sont numérotés à partir
de 101 et les annexes qui sont ajoutées sont désignées AA, BB, etc.
Une liste de toutes les parties de la série IEC 60730, publiées sous le titre général: Dispositifs
de commande électrique automatiques, se trouve sur le site web de l’IEC.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de stabilité
indiquée sur le site web de l'IEC sous webstore.iec.ch dans les données relatives au document
recherché. À cette date, le document sera
– reconduit,
– supprimé, ou
– révisé.
1 Domaine d’application
L'article de la Partie 1 est remplacé par le texte suivant:
La présente partie de l'IEC 60730 s'applique aux minuteries et aux minuteries cycliques
– utilisées dans, sur ou avec des matériels pour appareils domestiques et à usage analogue;
NOTE 1 Dans le présent document, le terme "matériel" signifie "appareil et matériel" et le terme "dispositifs de
commande" signifie "minuteries ou minuteries cycliques".
NOTE 2 Partout où il est utilisé dans le présent document, le terme "minuteries" signifie minuteries et minuteries
cycliques, sauf si le type est clairement précisé.
– pour l'automatisation des bâtiments qui relèvent du domaine d'application de la série
ISO 16484 et de la série IEC 63044 (HBES/BACS);
– pour des matériels utilisés par le public, tels que les matériels destinés à être utilisés dans
des magasins, des bureaux, des hôpitaux, des fermes et des applications commerciales et
industrielles;
– qui sont des dispositifs de commande activés intelligents;
– qui sont des dispositifs de commande à courant alternatif ou continu dont la tension
assignée ne dépasse pas 690 V en courant alternatif ou 600 V en courant continu;
– qui sont utilisés dans le cadre d'un système de commande ou de dispositifs de commande
qui sont mécaniquement intégrés à des dispositifs de commande multifonctions comportant
des sorties non électriques;
– ainsi qu'aux dispositifs de commande manuels qui sont électriquement et/ou
mécaniquement intégrés à des dispositifs de commande automatique.
NOTE 3 Les exigences relatives aux interrupteurs mécaniques à action manuelle qui ne font pas partie d'un
dispositif de commande automatique sont contenues dans l'IEC 61058-1-1.
Le présent document s'applique
– à la sécurité intrinsèque des minuteries et des minuteries cycliques, et
– à la sécurité fonctionnelle des minuteries et des minuteries cycliques et aux systèmes
de sécurité,
– aux minuteries et minuteries cycliques pour lesquelles les performances (par exemple,
l'effet des phénomènes CEM) du produit peuvent compromettre la sécurité et les
performances globales du système commandé,
– aux valeurs de fonctionnement, aux temps de fonctionnement et aux séquences de
fonctionnement lorsque ces éléments interviennent dans la sécurité du matériel,
– aux minuteries destinées aux appareils relevant du domaine d'application de la série
IEC 60335.
– aux dispositifs de commande manuels qui sont électriquement et/ou mécaniquement
intégrés à des minuteries.
Le présent document spécifie les exigences relatives à la construction, au fonctionnement et
aux essais des minuteries et minuteries cycliques utilisées dans, sur ou avec des matériels.
Le présent document
– ne s'applique pas aux interrupteurs temporisés (TDS, Time-Delay Switches) qui relèvent du
domaine d'application de l'IEC 60669-2-3;
– ne couvre pas les appareils qui n'indiquent que le temps ou le temps écoulé;
– ne s'applique pas aux dispositifs de commande multifonctions dont la fonction de minuterie
intégrée ne peut pas être soumise aux essais comme un dispositif de minuterie séparé.
2 Références normatives
L'article de la Partie 1 s'applique, avec l'exception suivante:
Addition:
IEC 60669-1:2017, Interrupteurs pour installations électriques fixes domestiques et analogues -
Partie 1: Exigences générales
3 Termes et définitions
L'article de la Partie 1 s'applique, avec les exceptions suivantes:
3.3 Définitions concernant les fonctions des dispositifs de commande
Définitions supplémentaires:
3.3.101
cycle
programme qui inclut l'ensemble des opérations de commutation qui ont lieu pendant le cycle
de fonctionnement, de la mise en marche à l'arrêt, d'un appareil commandé
3.3.102
fonctionnement permanent
surveillance continue de la fonction de protection au cours du fonctionnement de l'appareil ou
du système pendant plus de 24 h
3.3.103
fonctionnement non permanent
surveillance continue de la fonction de protection au cours du fonctionnement de l'appareil ou
du système pendant moins de 24 h
4 Généralités
L'article de la Partie 1 s'applique.
5 Informations techniques exigées
L'article de la Partie 1 s'applique, avec les exceptions suivantes:
Tableau 1 – Informations techniques exigées et méthodes pour fournir ces informations
Article ou
Information Méthode
paragraphe
Modifications:
49 Ne s'applique pas.
Points complémentaires:
101 Durée de la réserve de puissance 9.4.103 D
102 Temps de fonctionnement des minuteries remontées manuellement 9.4.103 D
103 Exactitude de fonctionnement et de réglage 9.4.104 X
104 Fréquence de la fonction d'essai à l'état défini H.13.2.2.2 X
105 Le dispositif de commande est destiné à un fonctionnement permanent ou à
9.12.4.2.4 X
un fonctionnement non permanent
Les valeurs relatives aux dispositifs de commande séparés à montage indépendant et intercalés dans
un câble souple sont données à l'Annexe AA.
6 Protection contre les chocs électriques
L'article de la Partie 1 s'applique.
7 Dispositions en vue de la mise à la terre de protection
L'article de la Partie 1 s'applique.
8 Bornes et connexions
L'article de la Partie 1 s'applique.
9 Exigences de construction
L'article de la Partie 1 s'applique, avec les exceptions suivantes:
9.4 Actions
Paragraphes supplémentaires:
9.4.101 Action de type 1.Q ou 2.Q
Une action de type 1.Q ou 2.Q doit être conçue de telle manière que le dispositif se réarme
automatiquement après une coupure de l'alimentation électrique.
La conformité est vérifiée par examen et par essai.
9.4.102 Action de type 1.R ou 2.R
Une action de type 1.R ou 2.R doit être conçue de telle manière que le dispositif soit interrompu
après une coupure de l'alimentation électrique et qu'il reprenne au point d'interruption après le
rétablissement de l'alimentation électrique.
La conformité est vérifiée par examen et par essai.
9.4.103 Action de type 1.S ou 2.S
Une action de type 1.S ou 2.S doit être conçue de telle manière que le dispositif, après une
interruption de l'alimentation électrique pendant un intervalle inférieur ou égal à la durée
déclarée de la réserve de puissance, reprenne sa séquence de fonctionnement prévue
comme si l'alimentation n'avait pas été interrompue.
Si le stockage d'énergie est assuré par la tension d'alimentation, la conformité est vérifiée par
un essai fonctionnel réalisé dès que la minuterie passe en fonctionnement sur la réserve de
puissance. Le fonctionnement précédent avec la réserve de puissance doit être la durée
déclarée de la réserve de puissance. La charge est réalisée à la tension assignée pendant
48 h si aucune autre période de charge n'est déclarée.
Si la réserve de fonctionnement est assurée par une pile, la conformité doit être vérifiée par le
calcul de la réserve de puissance au moyen de la capacité de la pile et du courant de décharge
mesuré.
9.4.104 Action de type 1.T ou 2.T
Une action de type 1.T ou 2.T doit être conçue de telle manière que son exactitude de
fonctionnement, à une température ambiante comprise entre 20 °C et 25 °C, corresponde à
celle qui est déclarée.
La conformité est vérifiée par examen et par essai.
9.4.105 Action de type 1.U ou 2.U
Une action de type 1.U ou 2.U doit être conçue de telle manière que les organes de réglage,
l'ensemble cadran, les dispositifs indicateurs et les organes de manœuvre de la minuterie
fonctionnent de sorte que la différence entre le temps réglé et le temps réel ne dépasse pas la
valeur déclarée.
L'écart ne doit pas dépasser:
– ± 1 min pour les minuteries cycliques à cadran "horaire";
– ± 30 min pour les minuteries cycliques à cadran "journalier";
– ± 3,5 h pour les minuteries cycliques à cadran "hebdomadaire";
– ± 14 h pour les minuteries cycliques à cadran "mensuel";
– ± 7 jours pour les minuteries cycliques à cadran "annuel".
La conformité est vérifiée uniquement sur les minuteries cycliques à cadran horaire, journalier
et hebdomadaire par trois mesurages consécutifs.
9.12 Dispositifs de commande utilisant des logiciels
Addition:
Les fonctions logicielles pour les minuteries et minuteries cycliques relevant du domaine
d'application de l'IEC 60730-2-7 sont classées comme étant de classe A, sauf déclaration
contraire du fabricant.
10 Parties filetées et connexions
L'article de la Partie 1 s'applique.
11 Lignes de fuite, distances dans l'air et distances à travers l'isolation solide
L'article de la Partie 1 s'applique.
12 Éléments constituants
L'article de la Partie 1 s'applique.
13 Évaluation des pannes sur les circuits électroniques
L'article de la Partie 1 s'applique, avec les exceptions suivantes:
13.1 Évaluation des pannes pour la sécurité intrinsèque
13.1.3 Évaluation des pannes de composant
13.1.3.2 Procédure d'essai
Addition:
Les dispositifs de commande doivent être soumis à l'essai lorsque le dispositif de commande
se trouve dans la condition déclarée et lorsqu'il ne s'y trouve pas.
NOTE La position MARCHE / ARRÊT peut être un exemple de condition déclarée.
13.1.38 Critères de conformité
Remplacement:
Le paragraphe de la Partie 1 s'applique, à l'exception du point c).
14 Résistance à l'humidité et à la poussière
L'article de la Partie 1 s'applique.
15 Résistance d'isolement et rigidité diélectrique
L'article de la Partie 1 s'applique.
16 Échauffements
L'article de la Partie 1 s'applique.
17 Tolérances de fabrication et dérive
L'article de la Partie 1 s'applique.
...
IEC 60730-2-7 ®
Edition 4.0 2026-04
INTERNATIONAL
STANDARD
Automatic electrical controls -
Part 2-7: Particular requirements for timers and time switches
ICS 97.120 ISBN 978-2-8327-1173-6
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CONTENTS
FOREWORD . 2
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 6
4 General . 6
5 Required technical information . 7
6 Protection against electric shock . 7
7 Provision for protective earthing . 7
8 Terminals and terminations. 7
9 Constructional requirements . 7
10 Threaded parts and connections . 8
11 Creepage distances, clearances and distances through solid insulation . 8
12 Components . 9
13 Fault assessment on electronic circuits . 9
14 Moisture and dust resistance . 9
15 Electric strength and insulation resistance . 9
16 Heating . 9
17 Manufacturing deviation and drift . 9
18 Environmental stress . 9
19 Endurance . 10
20 Mechanical strength . 13
21 Resistance to heat, fire and tracking . 14
22 Resistance to corrosion . 14
23 Electromagnetic compatibility (EMC) requirements – Emission . 14
24 Normal operation . 14
25 Electromagnetic compatibility (EMC) requirements – Immunity . 14
26 Abnormal operation tests . 15
Annexes . 16
Annex H (normative) Requirements related to functional safety . 17
Annex Q (informative) Regional differences relevant for the member countries of
Cenelec . 19
Annex R (informative) National differences relevant in the United States of America . 20
Annex S (informative) National differences relevant in Japan . 21
Annex T (informative) National differences relevant in Canada . 22
Annex AA (normative) Number of cycles, automatic and manual action . 23
Bibliography . 24
Table 1 – Required technical information and methods of providing these information . 7
Table AA.1 – Values for free standing, independently mounted and in-line cord timers
and time switches . 23
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-7: Particular requirements for timers and time switches
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 60730-2-7 has been prepared by IEC technical committee 72: Automatic electrical controls.
It is an International Standard.
This fourth edition cancels and replaces the third 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) adoption of IEC 60730-1:2022 (Ed.6.0) with all of its significant changes to
IEC 60730-1:2010 (Ed.4).
The text of this International Standard is based on the following documents:
Draft Report on voting
72/1526/FDIS 72/1537/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.
This part 2-7 is intended to be used in conjunction with IEC 60730-1. It was established on the
basis of the sixth edition of that standard (2022). Consideration can be given to future editions
of, or amendments to, IEC 60730-1.
This part 2-7 supplements or modifies the corresponding clauses in IEC 60730-1, so as to
convert that publication into the IEC standard: Particular requirements for timers and time
switches.
Where this part 2-7 states "addition", "modification" or "replacement", the relevant requirement,
test specification or explanatory matter in part 1 should be adapted accordingly.
Where no change is necessary, part 2-7 indicates that the relevant clause or subclause applies.
In the development of a fully international standard, it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
The reader's attention is drawn to the fact that Annex Q, Annex R, Annex S and Annex T list all
of the "in-some-country" clauses on differing practices of a less permanent nature relating to
the subject of this document.
In this publication, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matter: in smaller roman type;
– defined terms: bold type.
Subclauses, notes or items which are additional to those in Part 1 are numbered starting from
101, additional annexes are lettered AA, BB, etc.
A list of all parts of the IEC 60730 series, under the general title: Automatic electrical controls,
can be found on the IEC website.
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.
1 Scope
This clause of Part 1 is replaced by the following:
This part of IEC 60730 applies to timers and time switches
– for use in, on, or in association with equipment for household appliance and similar use;
NOTE 1 Throughout this document, the word "equipment" means "appliance and equipment" and "controls" means
"timer or time switches".
NOTE 2 Throughout this document, the word "timers" means timers and time switches, unless the type is
specifically mentioned.
– for building automation within the scope of ISO 16484 series and IEC 63044 series
(HBES/BACS);
– for equipment that is used by the public, such as equipment intended to be used in shops,
offices, hospitals, farms and commercial and industrial applications;
– that are smart enabled controls;
– that are AC or DC powered controls with a rated voltage not exceeding 690 V AC or 600 V
DC;
– utilized as part of a control system or controls which are mechanically integral with
multifunctional controls having non-electrical outputs;
– as well as manual controls when such are electrically and/or mechanically integral with
automatic controls.
NOTE 3 Requirements for manually actuated mechanical switches not forming part of an automatic control are
contained in IEC 61058-1-1.
This document applies to
– the inherent safety of timers and time switches, and
– functional safety of timers and time switches and safety related systems,
– timers and time switches where the performance (for example the effect of EMC
phenomena) of the product can impair the overall safety and performance of the controlled
system,
– the operating values, operating times, and operating sequences where such are
associated with equipment safety,
– timers for appliances within the scope of IEC 60335 series.
– manual controls when such are electrically and/or mechanically integral with timers.
This document specifies the requirements for construction, operation and testing of timers and
time switches used in, on, or in association with an equipment.
This document does not
– apply to time-delay switches (TDS) within the scope of IEC 60669-2-3;
– include devices which only indicate time or passage of time;
– apply to multi-functional controls having an integrated timing function which is not capable
of being tested as a separate timing device.
2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
IEC 60669-1:2017, Switches for household and similar fixed-electrical installations - Part 1:
General requirements
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.3 Definitions relating to the function of controls
Additional definitions:
3.3.101
cycle
program including all the switching activities involved in a start-to-finish operation of a controlled
appliance
3.3.102
permanent operation
continuous monitoring of the protective function during the operation of the appliance or system
for longer than 24 h
3.3.103
non-permanent operation
continuous monitoring of the protective function during the operation of the appliance or system
for less than 24 h
4 General
This clause of Part 1 is applicable.
5 Required technical information
This clause of Part 1 is applicable except as follows:
Table 1 – Required technical information and methods of providing these information
Clause or
Information Method
subclause
Modifications:
49 Not applicable
Additional items:
101 Power reserve duration 9.4.103 D
102 Running time for manually wound switches 9.4.103 D
103 Running accuracy and setting accuracy 9.4.104 X
104 Frequency of the defined state test function H.13.2.2.2 X
105 The control is for permanent or non-permanent operation 9.12.4.2.4 X
Values for in-line cord, free-standing and independently mounted controls are given in Annex AA.
6 Protection against electric shock
This clause of Part 1 is applicable.
7 Provision for protective earthing
This clause of Part 1 is applicable.
8 Terminals and terminations
This clause of Part 1 is applicable.
9 Constructional requirements
This clause of Part 1 is applicable except as follows:
9.4 Actions
Additional subclauses:
9.4.101 Type 1.Q or 2.Q action
A Type 1.Q or 2.Q action shall be so designed that it resets automatically upon loss of the
electrical supply.
Compliance is checked by inspection and by test.
9.4.102 Type 1.R or 2.R action
A Type 1.R or 2.R action shall be so designed that it is interrupted upon loss of the electrical
supply and resumes at the point of interruption upon restoration of the electrical supply.
Compliance is checked by inspection and by test.
9.4.103 Type 1.S or 2.S action
A Type 1.S or 2.S action shall be so designed that, after interruption of the electrical supply for
any interval up to the declared period of power reserve, it resumes its intended operating
sequence as if no interruption of the supply has occurred.
If the energy store is charged by the supply voltage, then compliance is checked by a functional
test, carried out immediately after the operation of the timer switches into power reserve. The
previous operation in power reserve shall be the declared period of power reserve. Charging is
carried out at rated voltage for 48 h, if no other charging period is declared.
If the running reserve is provided by a primary battery, compliance shall be verified by
calculation of the power reserve by means of the battery capacity and the measured discharge
current.
9.4.104 Type 1.T or 2.T action
A Type 1.T or 2.T action shall be so designed that its running accuracy in an ambient
temperature of 20 °C to 25 °C is as declared.
Compliance is checked by inspection and by test.
9.4.105 Type 1.U or 2.U action
A Type 1.U or 2.U action shall be so designed that its setting means, dial assembly, indicating
devices and switch operating means function so that the difference between set time and actual
time shall not be more than the declared amount.
This deviation shall not be more than:
– ± 1 min for time switches with "hour" dial;
– ± 30 min for time switches with "24 hour" dial;
– ± 3,5 h for time switches with "7 day" dial;
– ± 14 h for time switches with "month" dial;
– ± 7 days for time switches with "12 month" dial.
Compliance is checked only on time switches with hour, 24 hour and 7 day dial by three
consecutive measurements.
9.12 Controls using software
Addition:
Software functions for timers and time switches within the scope of IEC 60730-2-7 are
classified as class A, unless otherwise declared by the manufacturer.
10 Threaded parts and connections
This clause of Part 1 is applicable.
11 Creepage distances, clearances and distances through solid insulation
This clause of Part 1 is applicable.
12 Components
This clause of Part 1 is applicable.
13 Fault assessment on electronic circuits
This clause of Part 1 is applicable except as follows:
13.1 Fault assessment for inherent safety
13.1.3 Component fault assessment
13.1.3.2 Test procedure
Addition:
Controls shall be tested when the control is in the declared condition and when it is not.
NOTE Example for the declared condition could be ON / OFF position.
13.1.3.8 Compliance criteria
Replacement:
This subclause of Part 1 is applicable except item c).
14 Moisture and dust resistance
This clause of Part 1 is applicable.
15 El
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