IEC 60730-2-24:2026

Automatic electrical controls - Part 2-24: Particular requirements for displacement electrical controls

IEC 60730-2-24:2026 applies to automatic displacement electrical controls
- for use in, on, or in association with appliances for household and similar use;
NOTE 1 Through this document, the word "control" means "displacement electrical control".
EXAMPLE 1 Displacement electrical controls used in electrical pressure cookers with gross volume up to 25 l, with working pressure over 4 kPa and less than 150 kPa.
- that are AC or DC powered controls with a rated voltage not exceeding 690 V AC or 600 V DC;
- used in, on, or in association with equipment that use electricity;
- that are mechanically or electrically operated, responsive to change of position of point of action.
NOTE 2 Requirements for manual switches not forming part of an automatic control are covered in IEC 61058‑1‑1.
This document applies to
- inherent safety of automatic electro-mechanical displacement electrical controls;
- functional safety of automatic electro-mechanical displacement electrical controls;
- the operating values, operating times, and operating sequences where such are associated with equipment safety;
- displacement electrical controls having temperature sensing element(s), in which cases additional requirements can be considered to be necessary. Requirements for temperature sensing controls are included in IEC 60730-2-9.
This document specifies the requirements for construction, operation and testing of automatic displacement electrical controls used in, on, or in association with equipment.
This document does not
- apply to automatic electronic controls;
- take into account the response value of an automatic action of a control, if such a response value is dependent upon the method of mounting the control in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer applies.
NOTE 3 For more information about guidance to the application of displacement electrical controls, see Annex AA.
This part 2-24 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 may be given to future editions of, or amendments to, IEC 60730‑1. This part 2-24 supplements or modifies the corresponding clauses in IEC 60730-1, so as to convert that publication into the IEC standard: Particular requirements for displacement electrical controls. Where this part 2-24 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 2-24 indicates that the relevant clause or subclause applies.

Dispositifs de commande électrique automatiques - Partie 2-24: Exigences particulières pour les dispositifs de commande électriques de déplacement

L'IEC 60730-2-24:2026 s'applique aux dispositifs de commande électrique de déplacement automatiques
- destinés à être utilisés dans, sur, ou avec des appareils domestiques et à usage analogue;
NOTE 1 Dans le présent document, le terme "dispositif de commande" signifie "dispositif de commande électrique de déplacement".
EXEMPLE 1 Dispositifs de commande électrique de déplacement utilisés dans les autocuiseurs électriques dont le volume brut atteint 25 l et dont la pression de service est supérieure à 4 kPa et inférieure à 150 kPa.
- en courant alternatif et en courant continu dont la tension assignée ne dépasse pas 690 V en courant alternatif ou 600 V en courant continu;
- utilisés dans, sur ou avec un matériel électrique;
- à fonctionnement mécanique ou électrique, en réponse à un changement de position du point d'action.
NOTE 2 Les exigences pour les interrupteurs manuels ne faisant pas partie d'un dispositif de commande automatique sont couverts par l'IEC 61058-1-1.
Le présent document s'applique:
- à la sécurité intrinsèque des dispositifs de commande électrique de déplacement électromécaniques automatiques;
- à la sécurité fonctionnelle des dispositifs de commande électrique de déplacement électromécaniques automatiques;
- aux valeurs de fonctionnement, aux temps de fonctionnement et aux séquences de fonctionnement dans la mesure où ils interviennent dans la sécurité du matériel;
- aux dispositifs de commande électrique de déplacement dotés de dispositifs thermosensibles, auquel cas des exigences supplémentaires peuvent s'avérer nécessaires. Les exigences relatives aux dispositifs de commande thermosensibles sont incluses dans l'IEC 60730-2-9.
Le présent document spécifie les exigences de construction, de fonctionnement et d'essai des dispositifs de commande électrique de déplacement automatiques utilisés dans, sur ou en association avec un matériel.
Le présent document:
- ne s'applique pas aux dispositifs de commande automatique;
- ne prend pas en considération la valeur de réponse d'une action automatique d'un dispositif de commande lorsqu'elle est influencée par la méthode de montage du dispositif de commande dans le matériel. Dans les cas où une telle valeur de réponse est importante du point de vue de la protection de l'utilisateur ou de l'environnement, la valeur spécifiée dans la norme particulière du matériel ou déterminée par le fabricant s'applique.
NOTE 3 Pour plus d'informations sur l'application des dispositifs de commande électrique de déplacement, voir l'Annexe AA.
Cette partie 2-24 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 prises en considération. La présente Partie 2-24 complète ou modifie les articles correspondants de l'IEC 60730-1, de manière à transformer cette publication en norme IEC: Exigences particulières pour les dispositifs de commande électriques de déplacement. Lorsque la présente Partie 2-24 spécifie "addition", "modification" ou "remplacement", il convient d'adapter l'exigence, la modalité d'essai ou la note correspondante de la Partie 1 en conséquence. Lorsqu'aucune modification n'est nécessaire, la Partie 2-24 indique que l'article ou le paragraphe approprié s'applique.

General Information

• Status: Published
• Publication Date: 26-May-2026
• ICS: 97.120 - Automatic controls for household use
• Technical Committee: TC 72 - Automatic electrical controls
• Drafting Committee: PT 60730 - TC 72/PT 60730
• Current Stage: PPUB - Publication issued
• Start Date: 27-May-2026
• Completion Date: 08-May-2026

Standards Content (Sample)

IEC 60730-2-24 ®
Edition 1.0 2026-05
INTERNATIONAL
STANDARD
Automatic electrical controls -
Part 2-24: Particular requirements for displacement electrical controls
ICS 97.120 ISBN 978-2-8327-1192-7
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either
IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright
or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local
IEC member National Committee for further information.

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

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CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 General . 6
5 Required technical information . 7
6 Protection against electric shock . 8
7 Provision for protective earthing . 9
8 Terminals and terminations. 9
9 Constructional requirements . 9
10 Threaded parts and connections . 9
11 Creepage distances, clearances and distances through solid insulation . 9
12 Components . 10
13 Fault assessment on electronic circuits . 10
14 Moisture and dust resistance . 10
15 Electric strength and insulation resistance . 10
16 Heating . 10
17 Manufacturing deviation and drift . 10
18 Environmental stress . 10
19 Endurance . 11
20 Mechanical strength . 12
21 Resistance to heat, fire and tracking . 13
22 Resistance to corrosion . 13
23 Electromagnetic compatibility (EMC) requirements – Emission . 13
24 Normal operation . 13
25 Electromagnetic compatibility (EMC) requirements – Immunity . 13
26 Abnormal operation tests . 13
Annex H (normative) Requirements related to functional safety . 16
Annex AA (informative) Guide to the application of displacement electrical controls
within the scope of this standard . 19
Bibliography . 23

Figure 101 – Positions and travel distance of displacement electrical controls . 14
Figure 102 – Drawing for measuring the disconnection travel distance. 15
Figure 103 – An example of test fixture . 15
Figure AA.1 – Diagram of example 1 . 20
Figure AA.2 – Diagram of example 2 . 21

Table 1 – Required technical information and methods of providing these information . 7

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-24: Particular requirements for displacement electrical controls

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
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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 60730-2-24 has been prepared by IEC technical committee 72: Automatic electrical
controls. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
72/1506/CDV 72/1525/RVC
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 2-24 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 may be given to future editions
of, or amendments to, IEC 60730-1.
This part 2-24 supplements or modifies the corresponding clauses in IEC 60730-1, so as to
convert that publication into the IEC standard: Particular requirements for displacement
electrical controls.
Where this part 2-24 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 2-24 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.
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 automatic displacement electrical controls
– for use in, on, or in association with appliances for household and similar use;
NOTE 1 Through this document, the word "control" means "displacement electrical control".
EXAMPLE 1 Displacement electrical controls used in electrical pressure cookers with gross volume up to 25 l,
with working pressure over 4 kPa and less than 150 kPa.
– that are AC or DC powered controls with a rated voltage not exceeding 690 V AC or 600 V
DC;
– used in, on, or in association with equipment that use electricity;
– that are mechanically or electrically operated, responsive to change of position of point of
action.
NOTE 2 Requirements for manual switches not forming part of an automatic control are covered in IEC 61058-1-1.
This document applies to
– inherent safety of automatic electro-mechanical displacement electrical controls;
– functional safety of automatic electro-mechanical displacement electrical controls;
– the operating values, operating times, and operating sequences where such are associated
with equipment safety;
– displacement electrical controls having temperature sensing element(s), in which cases
additional requirements can be considered to be necessary. Requirements for temperature
sensing controls are included in IEC 60730-2-9.
This document specifies the requirements for construction, operation and testing of automatic
displacement electrical controls used in, on, or in association with equipment.
This document does not
– apply to automatic electronic controls;
– take into account the response value of an automatic action of a control, if such a response
value is dependent upon the method of mounting the control in the equipment. Where a
response value is of significant purpose for the protection of the user, or surroundings, the
value defined in the appropriate equipment standard or as determined by the manufacturer
applies.
NOTE 3 For more information about guidance to the application of displacement electrical controls, see
Annex AA.
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.2 Definitions of types of control according to purpose
Additional definitions:
3.2.101
displacement electrical control
automatic control where the displacement of point of action occurs through the displacement
of the container due to pressure change
Note 1 to entry: The container is an inner pot in the case of rice cooker.
Note 2 to entry: The displacement electrical control is considered an operating control with a type 2 action and
normally a protective control is provided on the end product to prevent a hazard, therefore there is no need to verify
the robustness of the self-locking mechanism.
3.2.102
position limiter
displacement electrical control which is intended to keep a position below one particular
value during normal operating conditions and which may have provision for setting by the end-
product manufacturer
Note 1 to entry: A position limiter can be manual reset type.
3.2.103
position regulator
cycling displacement electrical control, which is intended to keep a position between two
particular values under normal operating conditions and which may have provision for setting
by the end-product manufacturer
3.4 Definitions relating to disconnection and interruption
Additional definitions:
3.4.101
free position
P
f
initial state of the point of action of the displacement electrical control
Note 1 to entry: P is indicated as the position of 0 displacement in Figure 101.
f
Note 2 to entry: In general, free position is at located position.
3.4.102
disconnection position
P
d
position where the contact is disconnected from the circuit by the action mechanism under the
external force
Note 1 to entry: P is indicated in Figure 101.
d
3.4.103
self-locking position
P
s
position in which the self-locking mechanism just operates while the displacement can continue
to increase when the contact is disconnected
3.4.104
limit position
P
l
farthest position of the action mechanism of the displacement electrical control that can be
reached under external force where the action mechanism can recover to the free position
when the external force is released
Note 1 to entry: P is indicated in Figure 101.
l
3.4.105
reset position
P
r
position of the action mechanism where the disconnected contact will be re-connected when
the displacement is reduced
Note 1 to entry: P is indicated in Figure 101.
r
3.4.106
disconnection travel distance
distance between free position and disconnection position
3.4.107
self-locking travel distance
distance between disconnection position and self-locking position
3.4.108
limit travel distance
distance between free position and limit position
3.4.109
reset travel distance
distance between free position and reset position
3.4.110
point of action
point on the displacement electrical control at which the displacement is made
3.8 Definitions relating to component parts of controls
3.8.3
actuating member
Additional note:
Note 101 to entry: In Clause 19 of this document, the term "actuating member" includes that part which is
mechanically moved, pulled, pushed or turned to cause initiation of a control action.
4 General
This clause of Part 1 is applicable except as follows:
4.3.4.5.1
Additional paragraph:
For the displacement electrical controls designed with two or more sensing positions for
multiple functions, the relevant tests shall be applied to the individual sensing position, one at
a time.
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
Information Clause or subclause Method
Modifications:
3.2, 4.3.4.2, 4.3.4.5,
6 Purpose of control D or E
19.15, 3.2.101, 3.2.102
16 Temperature limits of mounting surfaces (T ) 16.5, C
s
19.3.1
Maximum temperature of mounting surface (T ) if it is more than
smax
20 K above T
19.15.101
max
19.15.102
NOTE 1 If the displacement electrical control is intended for
installation mode 2, the temperature of mounting post as shown in
AA.1
Figure AA.2 is taken as T .
s
18 Not applicable
19 Not applicable
20 Number of automatic cycles (A) for each automatic action. 13.1.3.3,
– Minimum 6 000 cycles for disconnection action Table 14,
– Minimum 30 cycles for self-locking mechanmism 19.7.6,
19.8.4,
NOTE 2 For controls having more than one automatic action, a
different value can be declared for each.
19.15.101
33 Type 2 action 3.4.106 D or E
9.4.3
H.17
43 Not applicable
48 Not applicable
50 Not applicable
51 Not applicable
52 Not applicable
53 Not applicable
54 Not applicable
56 Not applicable
60 Not applicable
61 Not applicable
62 Not applicable
65 Not applicable
66 Not applicable
75 Not applicable
76 Not applicable
77 Not applicable
78 Not applicable
79 Not applicable
80 Not applicable
81 Not applicable
Information Clause or subclause Method
82 Not applicable
83 Not applicable
84 Not applicable
86 Not applicable
Additional items:
101 Free position (P ) 3.4.101,
f
9.1.4,
D or E
Figure 101,
H.17.5.1
102 3.4.106,
Disconnection travel distance
9.4.3,
D or E
Figure 101,
Figure 102
103 Self-locking travel distance 3.4.107,
19.15.102, D or E
Figure 101
104 Limit travel distance 3.4.108,
19.15.101, D or E
Figure 101
105 3.4.109,
Reset travel distance
D or E
Figure 101
Procedures of limit travel distance endurance
...

IEC 60730-2-24 ®
Edition 1.0 2026-05
INTERNATIONAL
STANDARD
EXTENDED VERSION
This full version of IEC 60730-2-24:2026 includes the content of the references made
to IEC 60730-1:2022
Automatic electrical controls -
Part 2-24: Particular requirements for displacement electrical controls
ICS 97.120 ISBN 978-2-8327-1274-0
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or
by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either
IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC copyright
or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local
IEC member National Committee for further information.

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

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

IEC publications search - IEC Products & Services Portal - products.iec.ch
webstore.iec.ch/advsearchform Discover our powerful search engine and read freely all the
The advanced search enables to find IEC publications by a publications previews, graphical symbols and the glossary.
variety of criteria (reference number, text, technical With a subscription you will always have access to up to date
committee, …). It also gives information on projects, content tailored to your needs.
replaced and withdrawn publications.
Electropedia - www.electropedia.org
The world's leading online dictionary on electrotechnology,
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published containing more than 22 500 terminological entries in English
details all new publications released. Available online and and French, with equivalent terms in 25 additional languages.
once a month by email. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer
Service Centre: [e-mail].
CONTENTS
FOREWORD . 9
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 16
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 . 25
3.5 Definitions of types of control according to construction . 27
3.6 Definitions of type of automatic action of a control . 28
3.7 Definitions relating to protection against electric shock and type of insulation . 28
3.8 Definitions relating to component parts of controls . 32
3.9 Definitions of types of terminals and terminations of controls . 34
3.10 Definitions relating to the connections to controls . 36
3.11 Definitions relating to the performance of type 2 actions . 37
3.12 Definitions relating to the requirements for creepage distances and

clearances . 37
3.13 Miscellaneous definitions . 38
3.14 Definitions relating to manufacturer and user . 40
3.15 Definitions pertaining to thermistors . 40
3.16 Definitions relating to the structure of controls using software . 40
3.17 Definitions relating to error avoidance in controls using software . 40
3.18 Definitions relating to fault/error control techniques for controls using
software . 40
3.19 Definitions relating to memory tests for controls using software . 40
3.20 Definitions of software terminology – General . 40
3.21 Definitions relating to classes of control functions . 40
3.22 Definitions relating to functional safety . 40
3.23 Definitions related to access to data exchange . 40
3.24 Definitions related to EMC performance . 41
4 General . 43
4.1 General structure of the document . 43
4.2 General requirements . 44
4.3 General notes on tests . 44
5 Required technical information . 48
5.1 General requirements . 48
5.2 Methods of providing technical information . 48
5.3 Class II symbol . 55
5.4 Additional requirements for marking . 56
5.5 Warning or cautionary markings . 58
6 Protection against electric shock . 58
6.1 General requirements . 58
6.2 Actuating members and actuating means . 60
6.3 Capacitors . 61
6.4 Covers and uninsulated live or hazardous parts . 61
6.5 Battery operated controls provided with a user accessible mains supply input
connector . 61
7 Provision for protective earthing . 61
7.1 Class 0I and Class I controls. 61
7.2 Class II and class III controls . 62
7.3 Adequacy of earth connections . 62
7.4 Corrosion resistance . 63
7.5 Other requirements . 63
7.6 Protective equipotential bonding . 64
8 Terminals and terminations. 64
8.1 Terminals and terminations for external copper conductors . 64
8.2 Terminals and terminations for internal conductors . 69
8.3 Terminals and terminations for integrated conductors . 71
9 Constructional requirements . 71
9.1 Materials . 71
9.2 Protection against electric shock . 71
9.3 Actuation and operation . 74
9.4 Actions . 77
9.5 Openings in enclosures . 80
9.6 Mounting of controls . 80
9.7 Attachment of cords . 81
9.8 Size of cords – non-detachable . 82
9.9 Inlet openings . 83
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 . 92
10.1 Threaded parts moved during mounting or servicing . 92
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 . 124
19.3 Thermal conditions for the tests . 130
19.4 Manual and mechanical conditions for the tests . 130
19.5 Dielectric strength requirements. 130
19.6 Ageing test . 130
19.7 Overvoltage test or overload test in all countries using an overload test of
automatic action at accelerated rate . 130
19.8 Test of automatic action at accelerated rate . 131
19.9 Test of automatic action at slow rate . 131
19.10 Overvoltage test or overload test in all countries that use the overload test of
manual action at accelerated speed . 131
19.11 Test of manual action at slow speed . 131
19.12 Test of manual action at high speed which has multiple poles, and where
polarity reversal occurs during the action . 131
19.13 Test of manual action at accelerated speed . 132
19.14 Evaluation of compliance . 132
19.15 Test for particular purpose controls . 132
20 Mechanical strength . 133
20.1 General requirements . 133
20.2 Impact resistance . 133
20.3 Free-standing controls . 133
20.4 In-line cord controls . 133
20.5 Pull-cord actuated controls . 134
20.6 Foot actuated controls . 134
20.7 Actuating member and actuating means . 134
20.8 Flexing – test . 134
20.9 Cord anchorages – test . 134
21 Resistance to heat, fire and tracking . 134
21.1 General requirements . 134
21.2 Integrated, incorporated and in-line cord controls. 134
21.3 Independently mounted, free-standing controls . 136
22 Resistance to corrosion . 136
22.1 Resistance to rusting . 136
23 Electromagnetic compatibility (EMC) requirements – Emission . 137
23.1 General requirement . 137
23.2 High frequency emission . 137
23.3 Low frequency emission . 140
24 Normal operation . 140
25 Electromagnetic compatibility (EMC) requirements – Immunity . 141
25.1 General . 141
25.2 EMC test plan and report . 141
25.3 Immunity requirements . 143
25.4 Performance criteria . 146
25.5 Surge immunity test . 147
25.6 Electrical fast transient immunity test . 147
25.7 Radio-frequency electromagnetic field immunity . 148
25.8 Electrostatic discharge . 148
25.9 Immunity to power-frequency magnetic fields . 148
25.10 Test of the influence of voltage dips and voltage interruption in the power
supply network . 148
26 Abnormal operation tests . 148
26.1 Abnormal temperature test . 149
26.2 Overload tests . 150
26.3 Battery short-circuit test . 151
Annex A (normative) Indelibility of markings . 171
Annex B (normative) Measurement of creepage distances and clearances in air . 173
Annex C (informative) Nominal voltages of supply systems for different modes of
overvoltage control . 177
Annex D (normative) Overvoltage categories . 179
Annex E (informative) Typical usage of controls and related overvoltage categories . 180
Annex F (normative) Pollution degrees . 181
F.1 Pollution . 181
F.2 Degrees of pollution in the micro-environment . 181
Annex G (normative) Resistance to heat, fire and tracking tests . 182
G.1 Glow-wire test . 182
G.2 Proof tracking test . 182
G.3 Ball pressure test . 182
Annex H (normative) Requirements related to functional safety . 184
H.3 Terms and definitions. 184
H.5 Information . 195
H.9 Constructional requirements . 197
H.13 Fault assessment on electronic circuits . 213
H.17 Manufacturing deviation and drift . 218
H.19 Endurance . 221
H.25 Electromagnetic compatibility (EMC) requirements – Immunity. 222
Annex I (normative) Requirements for certain types of DC supplied controls . 223
I.1 Scope . 223
Annex J (normative) Requirements for thermistor elements and controls using
thermistors . 225
J.1 Scope . 225
Annex K (normative) Circuit for measuring touch current . 242
Annex L (normative) Printed circuit board coating performance test . 243
Annex M (normative) Printed circuit board protection . 245
Annex N (informative) Explanatory notes for surge immunity test . 248
N.1 Different source impedances . 248
N.2 Application of the tests. 248
N.3 Installation classification . 249
Annex O (informative) Guidance for applying Clause 11 . 252
Annex P (normative) Requirements for SELV and PELV . 255
P.1 Overview of the requirements for SELV and PELV . 255
P.2 Protection against electric shock by SELV system or PELV system . 255
P.3 Protective measures for SELV system and PELV system . 256
Annex Q (informative) Regional differences relevant for the member countries of
Cenelec . 258
Annex R (informative) National differences relevant in the United States of America . 263
R.2 Normative references . 263
Annex S (informative) National differences relevant in Japan . 264
S.2 Normative references . 264
Annex T (informative) National differences relevant in Canada . 265
T.2 Normative references . 265
Annex AA (informative) Guide to the application of displacement electrical controls
within the scope of this standard . 266
AA.1 General . 266
AA.2 Operational features . 266
AA.3 Installation specification . 266
AA.4 Guidance to choose a proper displacement electrical control for a specific
application . 269
Bibliography . 270

Figure 1 – Example of ports . 41
Figure 2 – Structure of the document with respect to inherent safety and functional
safety . 44
Figure 3 – Example of an electronic circuit with low power points . 107
Figure 4 – Test pin probe 13 of IEC 61032:1997 . 151
Figure 5 – Test finger probe B of IEC 61032:1997 . 152
Figure 6 – Test fingernail . 153
Figure 7 – Impact test for free-standing controls . 154
Figure 8 – Tumbling barrel . 154
Figure 9 – Apparatus for testing durability of markings on rating labels . 155
Figure 10 – Apparatus for flexing test . 156
Figure 11 – Screw terminals and stud terminals . 157
Figure 12 – Pillar terminals . 158
Figure 13 – Mantle terminals . 159
Figure 14 – Saddle and lug terminals . 160
Figure 15 – Tabs. 161
Figure 16 – Tabs for non-reversible connectors . 162
Figure 17 – Receptacles . 163
Figure 18 – Measurement of creepage distance and clearance . 164
Figure 19 – Diagram for touch current measurement at operating temperature for
single-phase connection of class II controls . 165
Figure 20 – Diagram for touch current measurement at operating temperature for
single-phase connection of controls other than class II . 165
Figure 21 – Diagram for touch current measurement at operating temperature for
three-phase connection of class II controls . 166
Figure 22 – Diagram for touch current measurement at operating temperature for
three-phase connection of controls other than class II . 167
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 . 167
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 . 168
Figure 101 – Positions and travel distance of displacement electrical controls . 169
Figure 102 – Drawing for measuring the disconnection travel distance. 170
Figure 103 – An example of test fixture . 170
Figure B.1 – Narrow groove . 174
Figure B.2 – Wide groove . 174
Figure B.3 – V-shaped groove . 174
Figure B.4 – Rib . 174
Figure B.5 – Uncemented joint with narrow groove . 175
Figure B.6 – Uncemented joint with wide groove . 175
Figure B.7 – Uncemented joint with narrow and wide grooves . 175
Figure B.8 – Diverging side walls . 176
Figure B.9 – Narrow recess . 176
Figure B.10 – Wide recess . 176
Figure B.11 – Conductive floating part . 176
Figure H.1 – V-Model for the software life cycle . 205
Figure J.1 – Generic test circuit for inrush-current limiting thermistor endurance test . 241
Figure K.1 – Circuit for measuring touch currents . 242
Figure L.1 – Test sample . 244
Figure M.1 – Example of type 1 protection . 246
Figure M.2 – Example of type 2 protection . 247
Figure N.1 – Example of surge protection by shielding in buildings with common earth
reference systems . 250
Figure N.2 – Example of secondary surge protection in buildings with separate
common earth reference systems . 251
Figure N.3 – Example of primary and secondary surge protection of indoor/outdoor
equipment . 251
Figure O.1 – Guidance flowchart for application of requirements of Clause 11 . 253
Figure AA.1 – Diagram of example 1 . 267
Figure AA.2 – Diagram of example 2 . 268
Table 1 – Required technical information and methods of providing these information . 51
Table 2 – Cross-sectional area of conductors . 65
Table 3 – Terminal conductors . 67
Table 4 – Conductor pull test values . 67
Table 5 – Nominal cross-sectional areas of conductors . 69
Table 6 – Axial force values for tab insertion and withdrawal . 70
Table 7 – Minimum cord conductor sizes . 82
Table 8 – Data exchange . 88
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 . 126
Table 19 – Electrical conditions for the overload tests of 19.7 and 19.10 . 128
Table 20 – Electrical conditions for the endurance tests of 19.8, 19.9, 19.11, 19.12 and
19.13 . 129
Table 23 – Emission limit for residential electromagnetic environment . 138
Table 24 – Emission limit for industrial electromagnetic environment . 139
Table 25 – The applicable EMC test in relation to the class of control function and type
of Action . 141
Table 26 – Immunity test requirements for residential electromagnetic environments . 143
Table 27 – Immunity test requirements for industrial electromagnetic environment . 145
Table 28 – Performance criteria . 147
Table 29 – Maximum winding temperature (for test of mechanical blocked output
conditions) . 149
Table B.1 – Value of X . 173
Table C.1 – Inherent control or equivalent protective control . 177
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 . 178
Table E.1 – Typical usage. 180
Table H.1 – Additional items to Table 1 . 195
a
Table H.2 – Acceptable measures to address fault/errors . 198
Table H.3 – Examples of techniques/measures for semi-formal methods . 205
Table H.4 – Examples of techniques/measures for software architecture specification . 206
Table H.5 – Examples of techniques/measures for module design specification . 207
Table H.6 – Examples of techniques/measures for design and coding standards . 207
Table H.7 – Examples of techniques/measures for software module testing . 208
Table H.8 – Examples of techniques/measures for software integration testing . 209
Table H.9 – Examples of techniques/measures for software safety validation . 209
Table H.10 – Combinations of analytical measures during hardware development . 210
Table H.11 – Examples of defences against unauthorised access and transmission
failure modes . 212
Table I.1 – Electrical transient conduction immunity in accordance with ISO 7637-2 . 223
Table I.2 – Electrical transient conduction immunity in accordance with ISO 7637-3 . 224
Table J.1 – Maximum current . 227
Table J.2 – Normal operating conditions . 228
Table J.3 – Samples for the test (clause reference) . 229
Table J.4 – Electrical and thermal ratings of a thermistor . 230
Table J.5 – Additional items to Table 1 . 231
Table J.6 – Sequence of calibration and conditioning tests for PTC thermistors . 233
Table J.7 – Classes for PTC sensing thermistors . 234
Table J.8 – Sequence of calibration and conditioning tests for NTC thermistors . 235
Table J.9 – Classes for NTC sensing thermistors . 235
Table J.10 – Number of cycles for endurance test . 239
Table J.11 – Ageing test temperature . 239
Table J.12 – Number of cycles for endurance test . 240
Table L.1 – Environmental cycling conditions . 243
Table M.1 – IEC 60664-3 test levels or conditions . 245
Table O.1 – Example A – Using Annex O guidance for applying Clause 11 . 254
Table O.2 – Example B – Using Annex O guidance for applying Clause 11 . 254
Table Q.1 – Additional aging parameters for windings . 259

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-24: Particular requirements for displacement electrical controls

FOREWORD
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
cons
...

IEC 60730-2-24 ®
Edition 1.0 2026-05
NORME
INTERNATIONALE
Dispositifs de commande électrique automatiques -
Partie 2-24: Exigences particulières pour les dispositifs de commande
électriques de déplacement
ICS 97.120  ISBN 978-2-8327-1192-7

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SOMMAIRE
AVANT-PROPOS . 2
1 Domaine d'application . 4
2 Références normatives . 4
3 Termes et définitions . 5
4 Généralités . 6
5 Informations techniques exigées . 7
6 Protection contre les chocs électriques . 8
7 Dispositions en vue de la mise à la terre de protection . 9
8 Bornes et connexions . 9
9 Exigences de construction . 9
10 Parties filetées et connexions . 9
11 Lignes de fuite, distances dans l'air et distances à travers l'isolation solide . 10
12 Éléments constituants . 10
13 Évaluation des pannes sur les circuits électroniques . 10
14 Résistance à l'humidité et à la poussière . 10
15 Résistance d'isolement et rigidité diélectrique . 10
16 Échauffements . 10
17 Tolérances de fabrication et dérive . 10
18 Contraintes climatiques . 10
19 Endurance . 11
20 Résistance mécanique. 12
21 Résistance à la chaleur, au feu et aux courants de cheminement . 13
22 Résistance à la corrosion . 13
23 Exigences de compatibilité électromagnétique (CEM) – Émission . 13
24 Fonctionnement normal . 13
25 Exigences de compatibilité électromagnétique (CEM) – Immunité . 13
26 Essais en fonctionnement anormal . 13
Annexe H (normative) Exigences relatives à la sécurité fonctionnelle . 16
Annexe AA (informative) Guide d'application des dispositifs de commande électrique
de déplacement dans les limites du domaine d'application de la présente norme . 19
Bibliographie . 23

Figure 101 – Positions et distance de déplacement des dispositifs de commande
électrique de déplacement . 14
Figure 102 – Schéma de mesure de la distance de déplacement pour la déconnexion . 15
Figure 103 – Example de montage d'essai . 15
Figure AA.1 – Schéma de l'exemple 1 . 20
Figure AA.2 – Schéma de l'exemple 2 . 21

Tableau 1 – Informations techniques exigées et méthodes pour fournir ces
informations . 7
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
Dispositifs de commande électrique automatiques -
Partie 2-24: Exigences particulières pour les dispositifs
de commande électriques de déplacement

AVANT-PROPOS
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L'IEC 60730-2-24 a été établie par le comité d'études 72 de l'IEC: Commandes électriques
automatiques. Il s'agit d'une Norme internationale.
Le texte de cette Norme internationale est issu des documents suivants:
Projet Rapport de vote
72/1506/CDV 72/1525/RVC
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/.
Cette partie 2-24 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 prises en considération.
La présente Partie 2-24 complète ou modifie les articles correspondants de l'IEC 60730-1, de
manière à transformer cette publication en norme IEC: Exigences particulières pour les
dispositifs de commande électriques de déplacement.
Lorsque la présente Partie 2-24 spécifie "addition", "modification" ou "remplacement", il
convient d'adapter l'exigence, la modalité d'essai ou la note correspondante de la Partie 1 en
conséquence.
Lorsqu'aucune modification n'est nécessaire, la Partie 2-24 indique que l'article ou le
paragraphe approprié s'applique.
Pour les besoins d'élaboration d'une Norme internationale, il a été nécessaire d'examiner les
différentes exigences en s'appuyant sur l'expérience pratique acquise dans différentes régions
du monde et d'identifier les variantes nationales au niveau des réseaux d'alimentation
électrique et des règles d'installation.
Dans la présente publication:
– Les caractères d'imprimerie suivants sont utilisés:
• exigences proprement dites: caractères romains;
• spécifications d'essai: caractères italiques;
• commentaires: petits caractères romains.
• termes définis: en 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, peut être consultée 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 suivant:
La présente partie de l'IEC 60730 s'applique aux dispositifs de commande électrique de
déplacement automatiques
– destinés à être utilisés dans, sur, ou avec des appareils domestiques et à usage analogue;
NOTE 1 Dans le présent document, le terme "dispositif de commande" signifie "dispositif de commande
électrique de déplacement".
EXEMPLE 1 Dispositifs de commande électrique de déplacement utilisés dans les autocuiseurs électriques dont
le volume brut atteint 25 l et dont la pression de service est supérieure à 4 kPa et inférieure à 150 kPa.
– en courant alternatif et en courant continu dont la tension assignée ne dépasse pas 690 V
en courant alternatif ou 600 V en courant continu;
– utilisés dans, sur ou avec un matériel électrique;
– à fonctionnement mécanique ou électrique, en réponse à un changement de position du
point d'action.
NOTE 2 Les exigences pour les interrupteurs manuels ne faisant pas partie d'un dispositif de commande
automatique sont couverts par l'IEC 61058-1-1.
Le présent document s'applique:
– à la sécurité intrinsèque des dispositifs de commande électrique de déplacement
électromécaniques automatiques;
– à la sécurité fonctionnelle des dispositifs de commande électrique de déplacement
électromécaniques automatiques;
– aux valeurs de fonctionnement, aux temps de fonctionnement et aux séquences de
fonctionnement dans la mesure où ils interviennent dans la sécurité du matériel;
– aux dispositifs de commande électrique de déplacement dotés de dispositifs
thermosensibles, auquel cas des exigences supplémentaires peuvent s'avérer nécessaires.
Les exigences relatives aux dispositifs de commande thermosensibles sont incluses dans
l'IEC 60730-2-9.
Le présent document spécifie les exigences de construction, de fonctionnement et d'essai des
dispositifs de commande électrique de déplacement automatiques utilisés dans, sur ou en
association avec un matériel.
Le présent document:
– ne s'applique pas aux dispositifs de commande automatique;
– ne prend pas en considération la valeur de réponse d'une action automatique d'un dispositif
de commande lorsqu'elle est influencée par la méthode de montage du dispositif de
commande dans le matériel. Dans les cas où une telle valeur de réponse est importante du
point de vue de la protection de l'utilisateur ou de l'environnement, la valeur spécifiée dans
la norme particulière du matériel ou déterminée par le fabricant s'applique.
NOTE 3 Pour plus d'informations sur l'application des dispositifs de commande électrique de déplacement, voir
l'Annexe AA.
2 Références normatives
L'article de la Partie 1 s'applique.
3 Termes et définitions
L'article de la Partie 1 s'applique avec les exceptions suivantes:
3.2 Définitions des différents types de dispositifs de commande en fonction de
l'application
Définitions supplémentaires:
3.2.101
dispositif de commande électrique de déplacement
dispositif de commande automatique dans lequel le point d'action se déplace suite au
déplacement du conteneur en raison d'une variation de pression
Note 1 à l'article: Dans le cas d'un autocuiseur de riz, le conteneur est un contenant intérieur.
Note 2 à l'article: Le dispositif de commande électrique de déplacement est considéré comme un dispositif de
commande de fonctionnement avec une action de type 2. En principe, un dispositif de commande de protection est
installé sur le produit final pour prévenir tout phénomène dangereux, par conséquent, il n'est pas nécessaire de
vérifier la solidité du mécanisme de verrouillage automatique.
3.2.102
limiteur de position
dispositif de commande électrique de déplacement destiné à maintenir une position en
dessous d'une valeur particulière dans les conditions de fonctionnement normal et dont le
réglage peut être réalisé par le fabricant du produit final
Note 1 à l'article: Un limiteur de position peut être du type à réarmement manuel.
3.2.103
régulateur de position
dispositif de commande électrique de déplacement à fonctionnement cyclique destiné à
maintenir une position entre deux valeurs particulières dans les conditions de fonctionnement
normal et dont le réglage peut être réalisé par le fabricant du produit final
3.4 Définitions relatives aux coupures et interruptions de circuit
Définitions supplémentaires:
3.4.101
position libre
P
f
état initial du point d'action du dispositif de commande électrique de déplacement
Note 1 à l'article: P est indiqué comme la position de déplacement 0 à la Figure 101.
f
Note 2 à l'article: En règle générale, la position libre se trouve à la position repérée.
3.4.102
position de déconnexion
P
d
position à laquelle le contact est déconnecté du circuit par le mécanisme d'action sous l'effet
d'une force externe
Note 1 à l'article: P est indiqué à la Figure 101.
d
3.4.103
position de verrouillage automatique
P
s
position dans laquelle le mécanisme de verrouillage automatique fonctionne, alors que le
déplacement peut se poursuivre lorsque le contact est déconnecté
3.4.105
position limite
P
l
position la plus éloignée du mécanisme d'action du dispositif de commande électrique de
déplacement qui peut être atteinte sous l'effet d'une force externe, le mécanisme d'action
pouvant revenir à la position libre lorsque la force externe est relâchée
Note 1 à l'article: P est indiqué à la Figure 101.
l
3.4.105
position de réarmement
P
r
position du mécanisme d'action dans laquelle le contact déconnecté est reconnecté lorsque le
déplacement est réduit
Note 1 à l'article: P est indiqué à la Figure 101.
r
3.4.106
distance de déplacement pour la déconnexion
distance entre la position libre et la position de déconnexion
3.4.107
distance de déplacement pour le verrouillage automatique
distance entre la position de déconnexion et la position de verrouillage automatique
3.4.108
distance de déplacement limite
distance entre la position libre et la position limite
3.4.109
distance de déplacement pour le réarmement
distance entre la position libre et la position de réarmement
3.4.110
point d'action
point sur le dispositif de commande électrique de déplacement auquel le déplacement a lieu
3.8 Définitions concernant les éléments constituants des dispositifs de commande
3.8.3
organe de manœuvre
Note supplémentaire:
Note 101 à l'article: A l'Article 19 du présent document, le terme "organe de manœuvre" inclut la partie qui est
mécaniquement déplacée, tirée, poussée ou tournée pour déclencher une action de commande.
4 Généralités
L'article de la Partie 1 s'applique avec l'exception suivante:
4.3.4.5.1
Alinéa supplémentaire:
Pour les dispositifs de commande électrique de déplacement conçus avec au moins deux
positions de détection pour des fonctions multiples, les essais appropriés doivent être appliqués
à chaque position de détection individuelle, une à la fois.
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
Informations Article ou paragraphe Méthode
Modifications:
3.2, 4.3.4.2, 4.3.4.5,
6 Fonction du dispositif de commande D ou E
19.15, 3.2.101, 3.2.102
16 Limites de température des surfaces de montage (T ) 16.5, C
s
19.3.1
Température maximale de la surface de montage (T ) si elle est
smax
supérieure à 20 K au-dessus de T
19.15.101
max
19.15.102
NOTE 1 Si le dispositif de commande électrique de déplacement

est prévu pour le mode d'installation 2, la température du montant de
AA.1
fixation indiquée à la Figure AA.2 est prise comme T .
s
18 Non applicable
19 Non applicable
20 Nombre de cycles automatiques (A) pour chaque action 13.1.3.3,
automatique.
Tableau 14,
– Au moins 6 000 cycles pour l'action de déconnexion
19.7.6,
– Au moins 30 cycles pour le mécanisme de verrouillage
19.8.4,
automatique
19.15.101
NOTE 2 Pour les dispositifs de commande à plusieurs actions
automatiques, une valeur différente peut être déclarée pour chaque
action.
33 Action de type 2 3.4.106 D ou E
9.4.3
H.17
43 Non applicable
48 Non applicable
50 Non applicable
51 Non applicable
52 Non applicable
53 Non applicable
54 Non applicable
56 Non applicable
60 Non applicable
61 Non applicable
62 Non applicable
65 Non applicable
66 Non applicable
75 Non applicable
76 Non applicable
77 Non applicable
78 Non applicable
79 Non applicable
80 Non applicable
Informations Article ou paragraphe Méthode
81 Non applicable
82 Non applicable
83 Non applicable
84 Non applicable
86 Non applicable
Points supplémentaires:
101 Position libre (P ) 3.4.101,
f
9.1.4,
D ou E
Figure 101,
H.17.5.1
102 3.4.106,
Distance de déplacement pour la déconnexion
9.4.3,
D ou E
Figure 101,
Figure 102
103 Distance de déplacement pour le verrouillage automatique 3.4.107,
19.15.102, D ou E
Figure 101
104 Distance de déplacement limite 3.4.108,
19.15.101, D ou E
Figure 101
105 3.4.109,
Distance de déplacement pour le réarmement
D ou E
Figure 101
106 Procédures de l'essai d'endurance de la distance de déplacement
19.15 X
limite
107 Vitesse de manœuvre du mécanisme de manœuvre utilisé pour les
19.15 X
essais à vitesse accélérée pendant l'essai d'endurance
108 Temps de maintien maximal de la distance de déplacement limite 19.15 X
109 Responsabilité du fabricant du produit final AA.1 D ou E
110 Température ambia
...

IEC 60730-2-24 ®
Edition 1.0 2026-05
INTERNATIONAL
STANDARD
Automatic electrical controls –
Part 2-24: Particular requirements for displacement electrical controls
ICS 97.120  ISBN 978-2-8327-1192-7

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CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 General . 6
5 Required technical information . 7
6 Protection against electric shock . 8
7 Provision for protective earthing . 9
8 Terminals and terminations. 9
9 Constructional requirements . 9
10 Threaded parts and connections . 9
11 Creepage distances, clearances and distances through solid insulation . 9
12 Components . 10
13 Fault assessment on electronic circuits . 10
14 Moisture and dust resistance . 10
15 Electric strength and insulation resistance . 10
16 Heating . 10
17 Manufacturing deviation and drift . 10
18 Environmental stress . 10
19 Endurance . 11
20 Mechanical strength . 12
21 Resistance to heat, fire and tracking . 13
22 Resistance to corrosion . 13
23 Electromagnetic compatibility (EMC) requirements – Emission . 13
24 Normal operation . 13
25 Electromagnetic compatibility (EMC) requirements – Immunity . 13
26 Abnormal operation tests . 13
Annex H (normative) Requirements related to functional safety . 16
Annex AA (informative) Guide to the application of displacement electrical controls
within the scope of this standard . 19
Bibliography . 23

Figure 101 – Positions and travel distance of displacement electrical controls . 14
Figure 102 – Drawing for measuring the disconnection travel distance. 15
Figure 103 – An example of test fixture . 15
Figure AA.1 – Diagram of example 1 . 20
Figure AA.2 – Diagram of example 2 . 21

Table 1 – Required technical information and methods of providing these information . 7

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-24: Particular requirements for displacement electrical controls

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
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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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
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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 60730-2-24 has been prepared by IEC technical committee 72: Automatic electrical
controls. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
72/1506/CDV 72/1525/RVC
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 2-24 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 may be given to future editions
of, or amendments to, IEC 60730-1.
This part 2-24 supplements or modifies the corresponding clauses in IEC 60730-1, so as to
convert that publication into the IEC standard: Particular requirements for displacement
electrical controls.
Where this part 2-24 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 2-24 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.
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 automatic displacement electrical controls
– for use in, on, or in association with appliances for household and similar use;
NOTE 1 Through this document, the word "control" means "displacement electrical control".
EXAMPLE 1 Displacement electrical controls used in electrical pressure cookers with gross volume up to 25 l,
with working pressure over 4 kPa and less than 150 kPa.
– that are AC or DC powered controls with a rated voltage not exceeding 690 V AC or 600 V
DC;
– used in, on, or in association with equipment that use electricity;
– that are mechanically or electrically operated, responsive to change of position of point of
action.
NOTE 2 Requirements for manual switches not forming part of an automatic control are covered in IEC 61058-1-1.
This document applies to
– inherent safety of automatic electro-mechanical displacement electrical controls;
– functional safety of automatic electro-mechanical displacement electrical controls;
– the operating values, operating times, and operating sequences where such are associated
with equipment safety;
– displacement electrical controls having temperature sensing element(s), in which cases
additional requirements can be considered to be necessary. Requirements for temperature
sensing controls are included in IEC 60730-2-9.
This document specifies the requirements for construction, operation and testing of automatic
displacement electrical controls used in, on, or in association with equipment.
This document does not
– apply to automatic electronic controls;
– take into account the response value of an automatic action of a control, if such a response
value is dependent upon the method of mounting the control in the equipment. Where a
response value is of significant purpose for the protection of the user, or surroundings, the
value defined in the appropriate equipment standard or as determined by the manufacturer
applies.
NOTE 3 For more information about guidance to the application of displacement electrical controls, see
Annex AA.
2 Normative references
This clause of Part 1 is applicable.
3 Terms and definitions
This clause of Part 1 is applicable except as follows:
3.2 Definitions of types of control according to purpose
Additional definitions:
3.2.101
displacement electrical control
automatic control where the displacement of point of action occurs through the displacement
of the container due to pressure change
Note 1 to entry: The container is an inner pot in the case of rice cooker.
Note 2 to entry: The displacement electrical control is considered an operating control with a type 2 action and
normally a protective control is provided on the end product to prevent a hazard, therefore there is no need to verify
the robustness of the self-locking mechanism.
3.2.102
position limiter
displacement electrical control which is intended to keep a position below one particular
value during normal operating conditions and which may have provision for setting by the end-
product manufacturer
Note 1 to entry: A position limiter can be manual reset type.
3.2.103
position regulator
cycling displacement electrical control, which is intended to keep a position between two
particular values under normal operating conditions and which may have provision for setting
by the end-product manufacturer
3.4 Definitions relating to disconnection and interruption
Additional definitions:
3.4.101
free position
P
f
initial state of the point of action of the displacement electrical control
Note 1 to entry: P is indicated as the position of 0 displacement in Figure 101.
f
Note 2 to entry: In general, free position is at located position.
3.4.102
disconnection position
P
d
position where the contact is disconnected from the circuit by the action mechanism under the
external force
Note 1 to entry: P is indicated in Figure 101.
d
3.4.103
self-locking position
P
s
position in which the self-locking mechanism just operates while the displacement can continue
to increase when the contact is disconnected
3.4.104
limit position
P
l
farthest position of the action mechanism of the displacement electrical control that can be
reached under external force where the action mechanism can recover to the free position
when the external force is released
Note 1 to entry: P is indicated in Figure 101.
l
3.4.105
reset position
P
r
position of the action mechanism where the disconnected contact will be re-connected when
the displacement is reduced
Note 1 to entry: P is indicated in Figure 101.
r
3.4.106
disconnection travel distance
distance between free position and disconnection position
3.4.107
self-locking travel distance
distance between disconnection position and self-locking position
3.4.108
limit travel distance
distance between free position and limit position
3.4.109
reset travel distance
distance between free position and reset position
3.4.110
point of action
point on the displacement electrical control at which the displacement is made
3.8 Definitions relating to component parts of controls
3.8.3
actuating member
Additional note:
Note 101 to entry: In Clause 19 of this document, the term "actuating member" includes that part which is
mechanically moved, pulled, pushed or turned to cause initiation of a control action.
4 General
This clause of Part 1 is applicable except as follows:
4.3.4.5.1
Additional paragraph:
For the displacement electrical controls designed with two or more sensing positions for
multiple functions, the relevant tests shall be applied to the individual sensing position, one at
a time.
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
Information Clause or subclause Method
Modifications:
3.2, 4.3.4.2, 4.3.4.5,
6 Purpose of control D or E
19.15, 3.2.101, 3.2.102
16 Temperature limits of mounting surfaces (T ) 16.5, C
s
19.3.1
Maximum temperature of mounting surface (T ) if it is more than
smax
20 K above T
19.15.101
max
19.15.102
NOTE 1 If the displacement electrical control is intended for
installation mode 2, the temperature of mounting post as shown in
AA.1
Figure AA.2 is taken as T .
s
18 Not applicable
19 Not applicable
20 Number of automatic cycles (A) for each automatic action. 13.1.3.3,
– Minimum 6 000 cycles for disconnection action Table 14,
– Minimum 30 cycles for self-locking mechanmism 19.7.6,
19.8.4,
NOTE 2 For controls having more than one automatic action, a
different value can be declared for each.
19.15.101
33 Type 2 action 3.4.106 D or E
9.4.3
H.17
43 Not applicable
48 Not applicable
50 Not applicable
51 Not applicable
52 Not applicable
53 Not applicable
54 Not applicable
56 Not applicable
60 Not applicable
61 Not applicable
62 Not applicable
65 Not applicable
66 Not applicable
75 Not applicable
76 Not applicable
77 Not applicable
78 Not applicable
79 Not applicable
80 Not applicable
81 Not applicable
Information Clause or subclause Method
82 Not applicable
83 Not applicable
84 Not applicable
86 Not applicable
Additional items:
101 Free position (P ) 3.4.101,
f
9.1.4,
D or E
Figure 101,
H.17.5.1
102 3.4.106,
Disconnection travel distance
9.4.3,
D or E
Figure 101,
Figure 102
103 Self-locking travel distance 3.4.107,
19.15.102, D or E
Figure 101
104 Limit travel distance 3.4.108,
19.15.101, D or E
Figure 101
105 3.4.109,
Reset travel distance
D or E
Figure 101
Procedures of limit travel distance endu
...