SIST EN IEC 60669-2-4:2026

SLOVENSKI STANDARD
01-julij-2026
Stikala za gospodinjstva in podobne nepremične električne inštalacije - 2-4. del:
Posebne zahteve - Ločilniki (IEC 60669-2-4:2024)
Switches for household and similar fixed electrical installations -Part 2-4: Particular
requirements - Isolating switches (IEC 60669-2-4:2024)
Schalter für Haushalt und ähnliche ortsfeste elektrische Installationen - Teil 2-4:
Besondere Anforderungen - Trennschalter (IEC 60669-2-4:2024)
Interrupteurs pour installations électriques fixes domestiques et analogues - Partie 2-4:
Prescriptions particulières - Interrupteurs-sectionneurs (IEC 60669-2-4:2024)
Ta slovenski standard je istoveten z: EN IEC 60669-2-4:2025
ICS:
29.120.40 Stikala Switches
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 60669-2-4

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2025
ICS 29.120.40 Supersedes EN 60669-2-4:2005
English Version
Switches for household and similar fixed electrical installations -
Part 2-4: Particular requirements - Isolating switches
(IEC 60669-2-4:2024)
Interrupteurs pour installations électriques fixes Schalter für Haushalt und ähnliche ortsfeste elektrische
domestiques et analogues - Partie 2-4: Exigences Installationen - Teil 2-4: Besondere Anforderungen -
particulières - Interrupteurs-sectionneurs Trennschalter
(IEC 60669-2-4:2024) (IEC 60669-2-4:2024)
This European Standard was approved by CENELEC on 2025-08-01. 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 60669-2-4:2025 E

European foreword
The text of document 23B/1460/CDV, future edition 2 of IEC 60669-2-4, prepared by SC 23B "Plugs,
socket-outlets and switches" of IEC/TC 23 "Electrical accessories" was submitted to the IEC-
CENELEC parallel vote and approved by CENELEC as EN IEC 60669-2-4:2025.
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 60669-2-4:2005 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 60669-1:2018.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
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 60669-2-4:2024 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60664-1:2020 NOTE Approved as EN IEC 60664-1:2020 (not modified)
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 60669-1:2018 is applicable except as follows.
Addition:
Publication Year Title EN/HD Year
IEC 60669-1 (mod) 2017 Switches for household and similar fixed- EN 60669-1 2018
electrical installations - Part 1: General
requirements
- - + AC 2018-
IEC 61180 2016 High-voltage test techniques for low-voltage EN 61180 2016
equipment - Definitions, test and procedure
requirements, test equipment
IEC 60669-2-4 ®
Edition 2.0 2024-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Switches for household and similar fixed electrical installations –

Part 2-4: Particular requirements – Isolating switches

Interrupteurs pour installations électriques fixes domestiques et analogues –

Partie 2-4: Exigences particulières – Interrupteurs-sectionneurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.40  ISBN 978-2-8322-8332-5

– 2 – IEC 60669-2-4:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 7
5 General remarks on tests . 7
6 Ratings . 8
7 Classification . 9
8 Marking . 9
9 Checking of dimensions . 10
10 Protection against electric shock . 10
11 Provision for earthing . 10
12 Terminals . 10
13 Constructional requirements . 12
14 Mechanism . 13
15 Resistance to ageing, protection provided by enclosures of switches and
resistance to humidity . 13
16 Insulation resistance and electric strength . 13
17 Temperature rise . 14
18 Making and breaking capacity . 15
19 Normal operation . 19
20 Mechanical strength . 19
21 Resistance to heat . 19
22 Screws, current-carrying parts and connections . 20
23 Creepage distances, clearances and distances through sealing compound . 20
24 Resistance of insulating material to abnormal heat, to fire and to tracking . 21
25 Resistance to rusting . 21
26 EMC requirements . 21
Annexes . 28
Annex B (informative) Changes planned for the future in order to align IEC 60669-1
with the requirements of IEC 60998 (all parts), IEC 60999 (all parts) and IEC 60228 . 29
Annex AA (informative) Determination of short-circuit power factor . 30
Annex BB (informative) SCPDs for short-circuit tests . 32
Bibliography . 34

Figure 101 – Test circuit for verification of the short-circuit withstand capability with an
SCPD of one-pole isolating switch . 23
Figure 102 – Test circuit for verification of the short-circuit withstand capability with an
SCPD of a two-pole isolating switch . 24
Figure 103 – Test circuit for verification of the short-circuit withstand capability with an
SCPD of a three-pole isolating switch . 25
Figure 104 – Test circuit for verification of the short-circuit withstand capability with an
SCPD of a four-pole isolating switch . 26

IEC 60669-2-4:2024 © IEC 2024 – 3 –
Figure 105 – Test apparatus for verification of the minimum I t and I values to be
p
withstood by the isolating switch . 27

Table 1 – Number of specimens needed for the tests . 7
Table 4 – Relationship between rated currents and connectable cross-sectional areas

of copper conductors . 11
Table 5 – Tightening torque for verification of the mechanical strength of screw-type
terminals . 11
Table 6 – Test values for flexion and pull out for copper conductors . 12
Table 7 – Test values for pulling out test . 12
Table 13 – External cable diameter limits for surface type switches . 12
Table 101 – Test voltage and corresponding altitudes . 14
Table 16 – Temperature-rise test currents and cross-sectional areas of copper
conductors . 14
Table 102 – Minimum values of I t and I . 16
p
Table 103 – Power factors for short-circuit tests . 17
Table 18 – Number of operations for normal operation test . 19
Table 23 – Creepage distances, clearances and distances through insulating sealing
compound . 20
Table BB.1 – Indication of silver wire diameters as a function of rated currents and
short-circuit currents . 32

– 4 – IEC 60669-2-4:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SWITCHES FOR HOUSEHOLD AND SIMILAR
FIXED ELECTRICAL INSTALLATIONS –

Part 2-4: Particular requirements –
Isolating switches
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60669-2-4 has been prepared by subcommittee 23B: Plugs, socket-outlets and switches,
of IEC technical committee 23: Electrical accessories. It is an International Standard.
This second edition cancels and replaces the first edition published in 2004. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revision of the present edition with reference to the published IEC 60669-1:2017 Edition 4
with its amendments and references to clauses and tables;
b) introducing the values for isolating switches with ratings from 6 A to 13 A;

IEC 60669-2-4:2024 © IEC 2024 – 5 –
c) introducing a circuit motor load with a rated current not exceeding 10 A and a power factor
not less than 0,6 in the scope;
d) modification of Table 1 and Table 5.
The text of this International Standard is based on the following documents:
Draft Report on voting
23B/1460/CDV 23B/1480A/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 of IEC 60669 is to be used in conjunction with IEC 60669-1:2017. It lists the changes
necessary to convert that standard into a specific standard for isolating switches.
When a particular subclause of IEC 60669-1:2017 is not mentioned in this document, that
subclause applies as far as reasonable.
In this document,
• the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– notes: in smaller roman type;
• subclauses, figures, tables or notes which are additional to those in IEC 60669-1:2017 are
numbered starting from 101. Annexes additional to those in IEC 60669-1:2017 are lettered
AA, BB, etc.
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.
– 6 – IEC 60669-2-4:2024 © IEC 2024
SWITCHES FOR HOUSEHOLD AND SIMILAR
FIXED ELECTRICAL INSTALLATIONS –

Part 2-4: Particular requirements –
Isolating switches
1 Scope
Clause 1 of IEC 60669-1:2017 applies except as follows.
Replacement of the first paragraph with the following:
This part of IEC 60669 applies to manually operated general purpose isolating switches with a
rated voltage not exceeding 440 V and a rated current not exceeding 125 A, intended for
household and similar fixed electrical installations, either indoors or outdoors.
Replacement of the fifth dash of the third paragraph:
– a monophase circuit for motor load with a rated current up to 10 A and a power factor
not less than 0,6.
NOTE 101 Isolating switches are designed for overvoltage category III and used in environment of pollution
degree 2 according to IEC 60664-1.
2 Normative references
Clause 2 of IEC 60669-1:2017 applies except as follows.
Addition:
IEC 60669-1:2017, Switches for household and similar fixed electrical installations – Part 1:
General requirements
IEC 61180:2016, High-voltage test techniques for low-voltage equipment – Definitions, test and
procedure requirements, test equipment
3 Terms and definitions
Clause 3 of IEC 60669-1:2017 applies except as follows.
Additional definitions:
3.101
isolating switch
switch designed to provide isolation of the installation or part of the installation and equipment
from the supply and to carry and to make and break the current in all line current carrying poles

IEC 60669-2-4:2024 © IEC 2024 – 7 –
3.102
rated conditional short-circuit current
I
nc
value of the AC component of a prospective current assigned by the manufacturer, which a
switch without integral short-circuit protection, but protected by a suitable short-circuit
protective device (hereinafter referred to as SCPD) in series, can withstand under specified
conditions of use and behaviour
3.103
Joule integral
I t
integral of the square of the current over a given time interval (t , t )
0 1
t
2 2
I t = i dt
∫
t
[SOURCE: IEC 60050-441:1984, 441-18-23 – modified with the deletion of the notes and
addition of "(t , t )".]
0 1
4 General requirements
Clause 4 of IEC 60669-1:2017 applies.
5 General remarks on tests
Clause 5 of IEC 60669-1:2017 applies except as follows.
Replace Table 1 with the following:
Table 1 – Number of specimens needed for the tests
Number of
additional
Number
Clauses and subclauses specimens for
of specimens
dual current
rating
6 Ratings A
7 Classification A
8 Marking A
9 Checking of dimensions ABC
10 Protection against electric shock ABC
11 Provision for earthing ABC
a,f,l
12 ABC JKL
Terminals
b, m
13 ABC
Constructional requirements
14 Mechanism ABC
Resistance to ageing, protection provided by enclosures of
ABC
switches, and resistance to humidity
c
16 ABC
Insulation resistance and electric strength
17 Temperature rise ABC JKL
i
18 Making and breaking capacity JKL
ABC
i
19 Normal operation JKL
ABC
– 8 – IEC 60669-2-4:2024 © IEC 2024
Number of
additional
Number
Clauses and subclauses specimens for
of specimens
dual current
rating
d,g
20 ABC
Mechanical strength
h
21 Resistance to heat ABC
22 Screws, current-carrying parts and connections ABC
Creepage distances, clearances and distances through sealing
23 ABC
compound
l
16.101 XYZ
Impulse voltage test
m
18.101 Short-circuit withstand capability XYZ + PQR
19.2
Test for switches intended for externally ballasted lamp loads DEF MNO

19.3
Test for switches intended for self-ballasted lamp loads UVW XYZ
24.1 Resistance to abnormal heat and to fire GHI
e
24.2 Resistance to tracking GHI
25 Resistance to rusting GHI
TOTAL 18 9
a
Five extra screwless terminals are used for the test of 12.3.11 and one extra set of specimens is used for the
test of 12.3.12.
b
An extra set of membranes are needed for each of the tests of 13.15.1 and 13.15.2.
c
One extra set of specimens of switches fitted with pilot light may be used for the tests of Clause 16.
d
One extra set of specimens of cord-operated isolating switches is needed for the test of 20.10.
e
One extra set of specimens may be used.
f
Two extra sets of specimens of terminals suitable for rigid and flexible conductors are required for 12.2.5,
12.2.6 and 12.2.7.
g
One extra set of specimens is needed for the tests of 20.5.1 and 20.5.2.
h
One extra set of specimens may be used for the tests of 21.2 and 21.3. In this case the specimens shall be
subjected first to the tests of 15.1.
i
Number of specimens required for insulation-piercing terminals (IPTs) are shown in Table D.1.
j
For switches with pilot light units if the electronic circuitry is so enclosed that the short-circuiting or
disconnecting of components is impossible or difficult, the manufacturer shall provide additional prepared test
specimens.
k
For isolating switches of pattern number 2 one extra set of specimens is used.
l
Test to be carried out only if the clearance of item 6 of Clause 23 is lower than 4 mm.
m
For the test of 18.101 six additional specimens are used.

6 Ratings
Clause 6 of IEC 60669-1:2017 applies except as follows.
6.2 Modification:
In the first paragraph, add the values "80 A, 100 A and 125 A."
6.3 Preferred combinations of number of poles and ratings
Replacement in Table 3, first column, last line, of the values "16, 20, 25, 32, 40, 45, 50 and 63"
with "equal to or greater than 16".

IEC 60669-2-4:2024 © IEC 2024 – 9 –
Additional subclause:
6.101 Standard and preferred values of the rated conditional short-circuit current (I )
nc
NOTE 101 The associated power-factors are specified in Table 103.
6.101.1 Values up to and including 10 000 A
The standard values of the rated conditional short-circuit current (I ) are:
nc
1 500 A, 3 000 A, 4 500 A, 6 000 A and 10 000 A.
6.101.2 Values above 10 000 A
The preferred values are:
15 000 A, 20 000 A and 25 000 A.
Values above 25 000 A are not considered by this document.
7 Classification
Clause 7 of IEC 60669-1:2017 applies except as follows.
7.1 Addition:
Isolating switches shall be only of pattern numbers 1, 2, 3 or 03.
7.2 Subclause 7.2 of IEC 60669-1:2017 is not applicable.
7.6 Addition:
– rail-type
8 Marking
Clause 8 of IEC 60669-1:2017 applies except as follows.
8.1 General
Modify as follows:
f), g) and h) are not applicable
Addition:
n) symbols for open position (OFF) and closed position (ON),
o) symbol for isolating function,
p) rated conditional short-circuit current (I ).
nc
The manufacturer shall provide reference(s) of one or more short-circuit protection devices
(SCPDs). This information shall be provided:
– in a catalogue, or
– in the instructions accompanying the isolating switch, or
– in both the catalogue and the accompanying instructions.

– 10 – IEC 60669-2-4:2024 © IEC 2024
8.2 Symbols
Modify as follows:
Symbols for mini-gap construction, micro-gap constructions and without contact gap are not
applicable.
Addition:
isolating function .
rated conditional short-circuit current . I
nc
8.3 Visibility of markings
Addition:
Isolating switches shall be marked with the symbols for isolating function and for the closed and
open position. These markings shall be visible from the front after installation, even after
removal of the front cover of the enclosure when the isolating switch is mounted and wired as
in normal use. The isolating function symbol may be included in a wiring diagram combined with
symbols for other functions, provided that the isolation function symbol is visible from the front
when the isolating switch is mounted and wired as in normal use.
The marking for the rated conditional short-circuit current (I ) shall be on the isolating switch
nc
or in the manufacturer's documentation.
8.6 Marking of the switch position
Replacement of the first sentence of the first paragraph:
Isolating switches shall be so marked that the actual contact position is clearly indicated.
Deletion of Note 1 and Note 2.
9 Checking of dimensions
Clause 9 of IEC 60669-1:2017 applies.
10 Protection against electric shock
Clause 10 of IEC 60669-1:2017 applies except as follows.
10.3.1 Replacement of the introductory sentence to the list:
Accessible parts of isolating switches shall be made of insulating material, with the exception
of the following:
11 Provision for earthing
Clause 11 of IEC 60669-1:2017 applies.
12 Terminals
Clause 12 of IEC 60669-1:2017 applies except as follows.

IEC 60669-2-4:2024 © IEC 2024 – 11 –
12.2.1 Addition to Table 4:
Table 4 – Relationship between rated currents and connectable
cross-sectional areas of copper conductors
c
Ranges of rated currents Rigid conductors (solid or stranded)
A Nominal cross-sectional areas Diameter of largest conductor
mm mm
Above 63 up to and including 80 From 10 up to 25 inclusive 6,85
Above 80 up to and including 100 From 16 up to 35 inclusive 7,90
Above 100 up to and including 125 From 25 up to 50 inclusive 9,10

12.2.5 Replacement of Table 5:
Table 5 – Tightening torque for verification of the mechanical strength
of screw-type terminals
Nominal diameter of thread Torque
mm Nm
1 2 3 4 5
Up to and including 2,8 0,2 – 0,4 0,4 –
Above 2,8 up to and including 3,0 0,25 – 0,5 0,5 –
Above 3,0 up to and including 3,2 0,3 – 0,6 0,6 –
Above 3,2 up to and including 3,6 0,4 – 0,8 0,8 –
Above 3,6 up to and including 4,1 0,7 1,2 1,2 1,2 1,2
Above 4,1 up to and including 4,7 0,8 1,2 1,8 1,8 1,8
Above 4,7 up to and including 5,3 0,8 1,4 2,0 2,0 2,0
Above 5,3 up to and including 6,0 1,2 1,8 2,5 3,0 3,0
Above 6,0 up to and including 8,0 2,5 2,5 3,5 6,0 4,0
Above 8,0 up to and including 10,0 – 3,5 4,0 10,0 6,0
Above 10,0 up to and including 12,0 – 4,0 – – 8,0
Above 12,0 up to and including 15,0 – 5,0 – – 10,0
Column 1 applies to screws without heads if the screw when tightened does not protrude from the hole, and to
other screws which cannot be tightened by means of a screwdriver with a blade wider than the diameter of the
screw.
Column 2 applies to nuts of mantle terminals which are tightened by means of a screwdriver.
Column 3 applies to other screws which are tightened by means of a screwdriver.
Column 4 applies to nuts of mantle terminals in which the nut is tightened by means other than a screwdriver.
Column 5 applies to screws or nuts, other than nuts of mantle terminals, which are tightened by means other than
a screwdriver.
– 12 – IEC 60669-2-4:2024 © IEC 2024
12.2.5 Addition to Table 6:
Table 6 – Test values for flexion and pull out for copper conductors
c
Conductor Diameter Mass
Height H
a b
cross-sect
...