SIST EN IEC 60730-2-6:2025

SLOVENSKI STANDARD
01-december-2025
Nadomešča:
SIST EN 60730-2-6:2016
SIST EN 60730-2-6:2016/A1:2021
Avtomatske električne krmilne naprave - 2-6. del: Posebne zahteve za avtomatske
električne krmilne naprave z zaznavanjem tlaka, vključno z mehanskimi zahtevami
Automatic electrical controls - Part 2-6: Particular requirements for automatic electrical
pressure sensing controls including mechanical requirements
Automatische elektrische Regel- und Steuergeräte - Teil 2-6: Besondere Anforderungen
an automatische elektrische Druckregel- und Steuergeräte einschließlich mechanischer
Anforderungen
Dispositifs de commande électriques automatiques - Partie 2-6: Exigences particulières
pour les dispositifs de commande électriques automatiques sensibles à la pression, y
compris les exigences mécaniques
Ta slovenski standard je istoveten z: EN IEC 60730-2-6:2025
ICS:
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60730-2-6

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2025
ICS 97.120 Supersedes EN 60730-2-6:2016; EN 60730-2-
6:2016/A1:2020
English Version
Automatic electrical controls - Part 2-6: Particular requirements
for automatic electrical pressure sensing controls including
mechanical requirements
(IEC 60730-2-6:2025)
Dispositifs de commande électriques automatiques - Partie Automatische elektrische Regel- und Steuergeräte - Teil 2-
2-6: Exigences particulières pour les dispositifs de 6: Besondere Anforderungen an automatische elektrische
commande électriques automatiques sensibles à la Druckregel- und Steuergeräte einschließlich mechanischer
pression, y compris les exigences mécaniques Anforderungen
(IEC 60730-2-6:2025) (IEC 60730-2-6:2025)
This European Standard was approved by CENELEC on 2025-09-18. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60730-2-6:2025 E

European foreword
The text of document 72/1486/FDIS, future edition 4 of IEC 60730-2-6, prepared by TC 72 "Automatic
electrical controls" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-10-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-10-31
document have to be withdrawn
This document supersedes EN 60730-2-6:2016 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document is read in conjunction with EN IEC 60730-1.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 60730-2-6:2025 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60079 series NOTE Approved as EN IEC 60079 series
ISO 22967:2010 NOTE Approved as EN 676:2020
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Annex ZA of EN IEC 60730-1 applies.

IEC 60730-2-6 ®
Edition 4.0 2025-08
INTERNATIONAL
STANDARD
Automatic electrical controls -
Part 2-6: Particular requirements for automatic electrical pressure sensing
controls including mechanical requirements
ICS 97.120  ISBN 978-2-8327-0598-8

IEC 60730-2-6:2025-08(en)
IEC 60730-2-6:2025 © IEC 2025
CONTENTS
FOREWORD . 3
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
4 General . 8
5 Required technical information . 9
6 Protection against electric shock . 10
7 Provision for protective earthing . 10
8 Terminals and terminations. 10
9 Constructional requirements . 10
10 Threaded parts and connections . 12
11 Creepage distances, clearances and distances through solid insulation . 12
12 Components . 12
13 Fault assessment on electronic circuits . 12
14 Moisture and dust resistance . 12
15 Electric strength and insulation resistance . 12
16 Heating . 12
17 Manufacturing deviation and drift . 13
18 Environmental stress . 13
19 Endurance . 13
20 Mechanical strength . 14
21 Resistance to heat, fire and tracking . 15
22 Resistance to corrosion . 15
23 Electromagnetic compatibility (EMC) requirements - Emission . 15
24 Normal operation . 15
25 Electromagnetic compatibility (EMC) requirements - Immunity . 16
26 Abnormal operation tests . 16
Annex H (normative) Requirements related to functional safety . 17
Annex Q (informative) Regional differences relevant for the member countries of
Cenelec . 28
Annex R (informative) National differences relevant in the United States of America . 29
Annex S (informative) National differences relevant in Japan . 30
Annex T (informative) National differences relevant in Canada . 31
Annex AA (normative) Number of cycles . 32
Annex BB (informative) Stainless steel for bellows, bourdon tubes or similar elements . 33
Bibliography . 36

IEC 60730-2-6:2025 © IEC 2025
Table 1 – Required technical information and methods of providing these information . 9
Table H.1 – Additional items to Table 1 . 17
Table AA.1 – Number of cycles for independently mounted controls . 32
Table AA.2 – Cycling rate for independently mounted controls . 32
Table BB.1 - Stainless steel for bellows, bourdon tubes or similar elements. 33

IEC 60730-2-6:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Automatic electrical controls -
Part 2-6: Particular requirements for automatic electrical pressure
sensing controls including mechanical requirements

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 60730-2-6 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 and its
Amendment 1:2019. 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 with all of its significant changes to IEC 60730-1:2013,
IEC 60730-1:2013/AMD 1:2015 and IEC 60730-1:2013/AMD2:2020.
IEC 60730-2-6:2025 © IEC 2025
The text of this International Standard is based on the following documents:
Draft Report on voting
72/1486/FDIS 72/1504/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts of the IEC 60730 series, under the general title: Automatic electrical controls,
can be found on the IEC website.
This part 2-6 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 2-6 supplements or modifies the corresponding clauses in IEC 60730-1, so as to
convert that publication into the IEC standard: Particular requirements for automatic electrical
pressure sensing controls including mechanical requirements.
Where this part 2-6 states "addition", "modification" or "replacement", the relevant requirement,
test specification or explanatory matter in part 1 should be adapted accordingly.
When a particular subclause of Part 1 is not mentioned in this Part 2, that 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.
IEC 60730-2-6:2025 © IEC 2025
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.
IEC 60730-2-6:2025 © IEC 2025
1 Scope
This clause of Part 1 is replaced by the following:
This document applies to automatic electrical pressure sensing controls
– 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
"pressure sensing controls".
– for building automation within the scope of ISO 16484 series and IEC 63044 series
(HBES/BACS);
EXAMPLE 1 Independently mounted automatic electrical pressure sensing controls, controls in smart grid
systems and controls for building automation systems within the scope of ISO 16484-2.
– 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;
EXAMPLE 2 Automatic electrical pressure sensing controls for commercial catering, heating and air-conditioning
equipment.
– that are smart enabled automatic electrical pressure sensing controls;
EXAMPLE 3 Smart grid automatic electrical pressure sensing controls, remote interfaces/control of energy-
consuming equipment including computer or smart phone.
– 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, gas, oil, solid fuel, solar
thermal energy, etc., or a combination thereof;
– utilized as part of a control system or controls which are mechanically integral with
multifunctional controls having non-electrical outputs;
– using NTC or PTC thermistors and to discrete thermistors, requirements for which are
contained in Annex J;
– that are mechanically or electrically operated, responsive to or controlling a pressure or
vacuum;
– as well as manual controls when such are electrically and/or mechanically integral with
automatic controls.
NOTE 2 Requirements for manually actuated mechanical switches not forming part of an automatic control are
contained in IEC 61058-1-1.
This document is also applicable to individual pressure sensing controls utilized as part of a
control system or pressure sensing controls which are mechanically integral with multi-
functional controls having non-electrical outputs.
This document is also applicable to pressure sensing controls for appliances within the scope
of IEC 60335-1.
This document applies to
– the inherent safety of pressure sensing controls, and
– functional safety of pressure sensing controls and safety related systems,
– pressure sensing controls 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.
IEC 60730-2-6:2025 © IEC 2025
This document specifies the requirements for construction, operation and testing of automatic
electrical controls used in, on, or in association with an equipment.
This document does not
– apply to pressure sensing controls intended exclusively for industrial process applications
unless explicitly mentioned in the relevant part 2 or the equipment standard. However, this
document can be applied to evaluate automatic electrical controls intended specifically for
industrial applications in cases where no relevant safety standard exists;
– take into account the response value of an automatic action of a pressure sensing 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 will apply;
– address the integrity of the output signal to the network devices, such as interoperability
with other devices unless it has been evaluated as part of the control system.
This document contains requirements for electrical features of pressure sensing controls and
requirements for mechanical features that affect their intended operation.
NOTE Subclause 20.101, as it pertains to gas and/or oil controls, is under consideration pending review or revision
of ISO 22967, ISO 22968 and ISO 23550, if applicable.
In general, these pressure sensing controls are integrated or incorporated with the equipment
or are intended to be integrated in, or on the equipment. This document also covers these
controls when they are independently mounted. In-line cord controls are not covered by this
document.
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
pressure limiter
pressure sensing control which is intended to keep a pressure below or above a predetermined
value during normal operating conditions and which can have provision for setting by the user
Note 1 to entry: A pressure limiter may be of the automatic or of the manual reset type. It does not make the
reverse operation during the normal duty cycle of the equipment.
3.2.102
pressure operating control
pressure sensing control set at a high or low pressure, or both, between which limits the
equipment is normally intended to operate
IEC 60730-2-6:2025 © IEC 2025
3.2.103
pressure cut-out
pressure sensing control intended to keep a pressure below or above one particular value
during abnormal operating conditions of the equipment and which has no provisions for setting
by the user
Note 1 to entry: A pressure cut-out may be of the automatic or of the manual reset type.
Note 2 to entry: A pressure cut-out will provide a Type 2 action.
Note 3 to entry: A pressure cut-out may have an adjustable stop intended to be set by the control manufacturer,
the equipment manufacturer or the installer.
3.3 Definitions relating to the function of controls
Additional definitions:
3.3.101
pressure medium
medium used to transmit the pressure to the pressure sensing element
Note 1 to entry: Pressure medium as used in this document refers to either gases or liquids.
3.3.102
permanent operation
continuous monitoring of the protective function during the operation of the appliance or
system for longer than 24 h
Note 1 to entry: 24 h is considered the typical time interval between a first and a second fault.
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
Note 1 to entry: 24 h is considered the typical time interval between a first and a second fault.
3.8 Definitions relating to component parts of controls
Additional definition:
3.8.101
vent
that opening from the atmospheric side of a diaphragm to the atmosphere through which air is
discharged or drawn in when the control is functioning
4 General
This clause of Part 1 is applicable except as follows:
4.3 General notes on tests
4.3.2 Conditions of test
4.3.2.7 Replacement:
The rates of pressure change declared in Table 1 requirement 31, and used in Clause 19 (i.e.
α , β , α , β ) shall have test tolerances as declared by the manufacturer.
1 1 2 2
IEC 60730-2-6:2025 © IEC 2025
4.3.4 Instructions for test
4.3.4.1 According to submission
Additional subclause:
4.3.4.1.101 The values in Annex AA apply for the testing of independently mounted pressure
sensing controls in Clause 19. Values for integrated and incorporated controls are specified
in the appropriate equipment standard.
5 Required technical information
5.2 Methods of providing 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
Method
Information
subclause
Replacement:
X
19 Number of cycles of actuation (M) for each manual action Annex AA,
Preferred values are: 100 000 cycles; 30 000 cycles; 10 000 cycles; 19.10, 19.11
j j j
6 000 cycles; 3 000 cycles ; 300 cycles ; 30 cycles
NOTE For controls with more than one manual action, a different value can
be declared for each. If a control has more than one intended "OFF" position,
then a cycle of actuation is regarded as a movement from one "OFF" position
to the next "OFF" position.
X
20 Number of automatic cycles (A) for each automatic action. Annex AA,
Preferred values are: 300 000 cycles; 200 000 cycles; 100 000 cycles; 13.1.3.3,
a
Table 14,
30 000 cycles; 20 000 cycles; 10 000 cycles; 6 000 cycles; 3 000 cycles ;
a b bd c
19.7.6,
1 000 cycles ; 300 cycles ; 30 cycles ; 1 cycle .
19.8.4
1) Not applicable to thermostats or to other fast cycling actions.
2) Applicable only to manual reset.
3) Applicable only to actions which require the replacement of a part after
each operation.
4) Can only be reset during manufacturer servicing.
NOTE For controls having more than one automatic action, a different value
can be declared for each.
29 Not applicable
38 Not applicable
42 Operating pressure (or pressures) 3.3.11, 17,
H.17.4
52 Not applicable
Additional items:
101 Pressure medium 3.3.101,
X
9.3.101,
20.101
102 Operating differential 3.3.25,
D
H.17.4
H.17.6
103 Maximum working pressure 3.3.28, 9,
D
19, 20
Addition to Footnote h:
For pressure sensing controls, limits of activating quantity are specified either in the applicable appliance
standard, by the appliance manufacturer or as declared by the pressure sensing control manufacturer
(see 19.7 and 19.8).
IEC 60730-2-6:2025 © IEC 2025
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 subclause:
9.4.101 Type 2.N action (for sensing actions, no increase in the operating value as a
result of any leakage from the sensing element or from parts connecting the
sensing element to the switch head)
A Type 2.N action shall be so designed that in the event of a leak in the sensing element, or
in any other part between the sensing element and the switch head, the declared disconnection
or interruption is provided before the sum of the declared operating pressure and drift is
exceeded.
Compliance is checked by the following test:
The operating pressure of a Type 2.N control shall be measured under the conditions of
Clause 17. If the control has means for setting, it shall be set to the highest value.
After this measurement, a hole is artificially produced in the sensing element and the
measurement of the operating pressure is repeated.
No positive drift is allowed beyond the declared value.
A separate shroud or sleeve may be employed for protection of the sensing element to achieve
conformance with Clause 20.
NOTE The test can be replaced by theoretical computations of the physical mode of operation.
9.11 Requirements during mounting, use, maintenance and servicing
Additional subclauses:
9.11.101 Parts in contact with a diaphragm shall have no sharp burrs, projections or the like
which chafe or abrade the diaphragm.
Compliance is checked by inspection before and after the tests of Clause 19.
9.11.102 An operating spring shall be retained and arranged to prevent abrasion, binding,
buckling or interference with its free movement.
IEC 60730-2-6:2025 © IEC 2025
Compliance is checked by inspection before and after the tests of Clause 19.
9.11.103 If failure of any part of the control would allow unsafe leakage of a hazardous fluid,
that part shall be made of a material having a melting point (solidus temperature) of not less
than 510 °C and a tensile strength of not less than 68 MPa at 204 °C.
Such parts shall not sag, distort, melt, oxidize or show leakage of fluid during any of the tests
specified herein.
Compliance is checked by inspection before and after the tests of Clause 19.
9.11.104 A part including a sheath, capillary tube, bellows or diaphragm shall be resistant to
atmospheric corrosion and attack by the fluid it can normally contact in service, if failure of the
part will permit external fluid leakage of a combustible fluid or cause the control to malfunction.
NOTE Brass alloys containing less than 81 % copper and more than 9 % zinc are not considered resistant to the
corrosive effects of fuel oils.
9.11.105 A control in which a flexible diaphragm, bellows or similar construction constitutes
the only flammable gas or fluid seal shall have the atmospheric side of the diaphragm or bellows
enclosed in a casing designed to limit external fluid leakage in the event of a diaphragm or
bellows rupture or shall have provisions for connection of a vent pipe or tubing intended to be
routed to the outdoors or other safe location.
2 2
9.11.106 A control designed to supervise the pressure of fuel oil of 1,00 mm /s to 600 mm /s
viscosity is not required to conform to 20.101 and 20.102, provided three samples of the control,
when subjected to a 100 000 cycle endurance test, show no evidence of leakage during the test
and when subjected to a hydrostatic test of four times the maximum working pressure, following
the endurance test, and the control conforms to one of the following:
a) the bellows, Bourdon tube, diaphragm or similar element is made of stainless steel or
material of equivalent resistance to corrosion designated material class A, if leakage from
a ruptured element will be into the control enclosure, in which case such leakage is to be
released to the exterior of the control before entering any opening provided for conduit
connection, or
b) the bellows, Bourdon tube, diaphragm or similar element is made of stainless steel or
material of equivalent resistance to corrosion designated material class B, if leakage from
a ruptured element will be to the exterior of the control enclosure only.
NOTE 1 Suitable class A and B materials are shown in Annex BB.
NOTE 2 1 mm /s = 1 centistoke.
Additional subclauses:
9.101 Construction requirements relating to operating mechanism
9.101.1 If screws and nuts serve to attach operating parts to movable members, they shall be
swaged or otherwise locked.
9.101.2 The operating mechanism of a manually operated switch shall not subject parts to
damage.
9.101.3 Operating parts shall be separated by barriers or by their physical location from
conductors to be connected to the control to avoid interference with the movement of such parts
by the conductors.
Compliance with 9.101.1 to 9.101.3 inclusive is checked by inspection.
IEC 60730-2-6:2025 © IEC 2025
9.102 A pressure cut-out shall not reset or be resettable manually or otherwise at a value
above the maximum or below the minimum operating pressure, whichever is declared.
9.103 A pressure cut-out with a manually operated reset device shall be trip-free.
Compliance with 9.102 and 9.103 is checked by inspection.
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
13.1.3.8 Compliance criteria
Item c) is not applicable.
14 Moisture and dust resistance
This clause of Part 1 is applicable except as follows:
14.1 Protection against ingress of water and dust
14.1.1 Addition:
The tests in this subclause are not intended to determine the suitability of the seal between the
control and the equipment.
15 Electric strength and insulation resistance
This clause of Part 1 is applicable.
16 Heating
This clause of Part 1 is applicable.
IEC 60730-2-6:2025 © IEC 2025
17 Manufacturing deviation and drift
This clause of Part 1 is applicable.
18 Environmental stress
This clause of Part 1 is applicable.
19 Endurance
This clause of Part 1 is applicable except as follows:
19.1 General requirements
19.1.5 Compliance criteria
Replacement:
Compliance with 19.1.2 and 19.1.3 is checked by the tests of 19.15.
19.1.6 Test sequence and conditions
19.1.6.2 Addition:
The tests of Clause 19 shall be conducted at the declared maximum working pressure and
operating differential as declared in Table 1, requirement 102 and 103.
19.15 Test for particular purpose controls
Additional subclauses:
19.15.101 Pressure operating controls
Subclauses 19.1 to 19.5 inclusive are applicable.
Subclause 19.6 is not applicable.
Subclauses 19.7 and 19.8 are applicable.
Subclause 19.9 is applicable, but only to slow-make, slow-break automatic actions.
Subclauses 19.10 to 19.13 inclusive are applicable but only to those pressure operating
controls which have a manual action (including an actuating means providing setting by the
user).
Subclause 19.14 is applicable.
19.15.102 Pressure limiter
Subclauses 19.1 to 19.5 inclusive are applicable.
Subclause 19.6 is not applicable.
IEC 60730-2-6:2025 © IEC 2025
Subclauses 19.7 and 19.8 are applicable except that, where necessary, the reset operation, if
required, is obtained by actuation. This actuation shall be as specified in 19.4 for accelerated
speed, as soon as permitted by the mechanism, or as declared by the manufacturer in Table 1,
requirement 31.
Subclause 19.9 is applicable, but only to slow-make, slow-break automatic actions, the same
conditions for manual reset for 19.7 and 19.8 being used.
Subclauses 19.10 to 19.13 inclusive are applicable but only to those pressure limiters which
have a manual action (including an actuating means providing setting by the user).
Subclauses 19.10 to 19.13 inclusive are not applicable to the normal reset manual action,
which is tested during the automatic test of 19.7 to 19.9 inclusive. If the pressure limiter has
other manual actions which are not tested during the automatic test, then these subclauses
are applicable.
Subclause 19.14 is applicable.
20 Mechanical strength
This clause of Part 1 is applicable except as follows:
Additional subclauses:
20.101 Medium leakage
Parts of pressure limiters or pressure cut-outs which are subjected to pressure of a fluid to
be supervised shall not leak externally at a rate in excess of 200 cm /h, when tested with air or
nitrogen at a pressure of 1,5 times the maximum working pressure of the control.
To determine compliance, the control shall be connected to a system capable of supplying
clean air or nitrogen at the specified test pressure. Any by-pass or other openings not essential
to the operation of the control during the test shall be sealed. Air or nitrogen shall be admitted
and maintained at the specified test pressure. In the case of a diaphragm element, which, in
normal usage, is subjected to pressure on both sides of the diaphragm, the test pressure shall
be applied to both sides of the diaphragm slowly and without shock to avoid stressing the
diaphragm excessively.
Leakage shall be observed by an apparatus capable of indicating accurately a flow rate of
200 cm /h for the test fluid employed. A control with a maximum working pressure of 35 kPa
or more can be considered as conforming to the above if, when the fluid-containing parts of the
control are submerged in water to a depth of approximately 25 mm while under the test
pressure, no bubble indicating leakage is observed within 10 s after the parts are submerged.
To conform to 9.11.105, a control shall not allow leakage under conditions of ruptured
diaphragm or bellows from an unthreaded vent opening or around pins, stems or linkages
passing through the housing in excess of the following rate, when the control is tested to its
maximum working pressure:
a) 0,03 m /h of a 0,64 specific gravity gas for a control for use only with fuel gases having
specific gravity less than 1,0;
NOTE 1 In the countries members of CENELEC, the leakage rate is 70 l/h.
b) 0,014 m /h of a 1,53 specific gravity gas for a control for use with liquified petroleum gases;
NOTE 2 In the countries members of CENELEC, the leakage rate is 70 l/h.
IEC 60730-2-6:2025 © IEC 2025
c) 0,001 m /h of water for a control for use with flammable liquids such as gasoline, kerosene
and fuel oils up to 1,2 mm /s;
3 2
d) 0,002 m /h of the lightest grade fuel oil heavier than 1,2 mm /s for which a control shall be
used.
20.102 Strength of parts (hydrostatic)
20.102.1 A pressure sensing control employing a Bourdon tube, a flexible metal bellows, a
diaphragm or the like rated 2 000 kPa or more, which is not contained within an enclosure, shall
withstand for 1 min without bursting a hydraulic pressure equal to four times the maximum
working pressure of the control.
The control under test shall be filled with water to exclude air and is connected to a hydraulic
pump. The pressure shall be raised gradually to the required test pressure.
Leakage at a gasket or fitting during this test is permitted provided the leakage does not occur
below 50 % of the required test pressure and the test can be continued to four times maximum
working pressure.
20.102.2 A pressure sensing control employing a Bourdon tube, a flexible metal bellows, a
diaphragm or the like that is contained within an enclosure shall comply with 20.102.1 or shall
– withstand for 1 min without visible leakage a hydraulic pressure of two times the maximum
working pressure, and
– withstand for 1 min a hydraulic pressure equal to four times the maximum working pressure
or, if this pressure cannot be reached without damage to the equipment, at least three times
maximum working pressure. Also, it shall be demonstrated that the enclosure can either
relieve pressure equal to four times maximum working pressure without rupturing in a
manner likely to endanger persons or surroundings, or that it can withstand the test
pressure.
The test is conducted as in 20.102.1.
20.102.3 A pressure limiter or pressure cut-out shall be capable of withstanding for 1 min
without bursting a hydraulic pressure equal to four times the maximum working pressure.
The control under test shall be filled with water to exclude air and connected to a hydraulic
pump. The pressure shall be raised gradually to the required test pressure.
21 Resistance to heat, fire and tracking
This clause of Part 1 is applicable.
22 Resistance to corrosion
This clause of Part 1 is applicable.
23 Electromagnetic compatibility (EMC) requirements - Emission
This clause of Part 1 is applicable.
24 Normal operation
This clause of Part 1 is applicable.
IEC 60730-2-6:2025 © IEC 2025
25 Electromagnetic compatibility (EMC) requirements - Immunity
This clause of Part 1 is applicable.
26 Abnormal operation tests
This clause of Part 1 is applicable.
IEC 60730-2-6:2025 © IEC 2025
Annex H
(normative)
Requirements related to functional safety
This annex of Part 1 is applicable except as follows:
H.3 Terms and definitions
H.3.21.2 Addition:
Note 101 to entry: In general, pressure cut-outs perform class B or C control functions.
H.3.21.3 Addition:
Note 101 to entry: In general, pressure cut-outs used on closed water heater systems perform class C control
functions.
H.5 Information
Table H.1 – Additional items to Table 1
Additional items:
Information Clause or Method
subclause
H.101 The output condition of pressure cut-outs, Type 2 operating controls and H.25.1.103,
H.25.1.104, X
Type 2 limiters after operation
H.25.1.105
H.102 Frequency of the defined state test function H.13.2.2.2,
H.13.2.3.2, X
H.13.2.3.3
H.103 The control is for permanent operation or non-permanent operation 3.3.102
3.3.103,
X
H.13.2.2.2,
H.13.2.3.2
Additional footnote:
For example, conducting or non-conducting, as applicable.

H.13 Fault assessment on electronic circuits
H.13.2 Fault assessment to ensure functional safety
H.13.2.2 Class B control function
H.13.2.2.2 First fault
Modification:
Replace item b) as follows:
b) the control shall react within the fault reaction time (see Table H.1, requirement H.11) by
proceeding to the defined state provided that a subsequent restart under the same fault
conditions results in the system returning to the same defined state condition;
SIST EN IEC 60730-2-
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