Switches for appliances -- Part 2-4: Particular requirements for independently mounted switches

This International Standard applies to independently mounted switches for appliances (mechanical or electronic) actuated by hand, by foot or by other human activity, to operate or control electrical appliances and other equipment for household or similar purposes with a rated voltage not exceeding 480 V and a rated current not exceeding 63 A. These switches are intended to be operated by a person, via an actuating member or by actuating a sensing unit. The actuating member or sensing unit can be integral with or arranged separately, either physically or electrically, from the switch and may involve transmission of a signal, for example electrical, optical, acoustic or thermal, between the actuating member or sensing unit and the switch. Switches which incorporate additional control functions governed by the switch function are within the scope of this standard. This standard also covers the indirect actuation of the switch when the operation of the actuating member or sensing unit is provided by a remote control or a part of an appliance or equipment such as a door.
NOTE 1 Electronic switches may be combined with mechanical switches giving full disconnection or microdisconnection.
NOTE 2 Electronic switches without a mechanical switch in the supply circuit provide only electronic
disconnection. Therefore, the circuit on the load side is always considered to be live.
NOTE 3 For switches used in tropical climates, additional requirements may be necessary.
NOTE 4 Attention is drawn to the fact that the standards for appliances may contain additional or alternative requirements for switches.
NOTE 5 Throughout this standard, the word “appliance” means “appliance or equipment”.

Geräteschalter -- Teil 2-4: Besondere Anforderungen an unabhängig montierte Schalter

Interrupteurs pour appareils -- Partie 2-4: Règles particulières pour les interrupteurs à montage indépendant

S'applique aux interrupteurs à montage indépendant pour appareils manoeuvrés à la main, au pied ou par d'autres actions humaines pour utilisation avec des appareils et autres matériels pour usage domestique et analogue de tension assignée n'excédant pas 440 V et de courant n'excédant pas 63 A.

Stikala za aparate – 2-4. del: Posebne zahteve za samostojno nameščena stikala (IEC 61058-2-4:1995 + A1:2003)

General Information

Status
Published
Publication Date
31-Dec-2005
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jan-2006
Due Date
01-Jan-2006
Completion Date
01-Jan-2006

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SLOVENSKI SIST EN 61058-2-4:2006
STANDARD
januar 2006
Stikala za aparate – 2-4. del: Posebne zahteve za samostojno nameščena
stikala (IEC 61058-2-4:1995 + A1:2003)
(istoveten EN 61058-2-4:2005)
Switches for appliances – Part 2-4: Particular requirements for independently
mounted switches (IEC 61058-2-4:1995 + A1:2003)
ICS 29.120.40 Referenčna številka
SIST EN 61058-2-4:2006(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD EN 61058-2-4
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2005
ICS 29.120.40
English version
Switches for appliances
Part 2-4: Particular requirements for independently mounted switches
(IEC 61058-2-4:1995 + A1:2003)
Interrupteurs pour appareils Geräteschalter
Partie 2-4: Règles particulières pour Teil 2-4: Besondere Anforderungen
les interrupteurs à montage indépendant an unabhängig montierte Schalter
(CEI 61058-2-4:1995 + A1:2003) (IEC 61058-2-4:1995 + A1:2003)

This European Standard was approved by CENELEC on 2005-06-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,

Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61058-2-4:2005 E
---------------------- Page: 2 ----------------------
EN 61058-2-4:2005 – 2 –
Foreword

The text of the International Standard IEC 61058-2-4:1995, prepared by SC 23J, Switches for

appliances, of IEC TC 23, Electrical accessories, was submitted to the Unique Acceptance Procedure

and was approved by CENELEC as EN 61058-2-4 on 2005-06-01 without any modification.

The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2006-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2008-06-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 61058-2-4:1995 was approved by CENELEC as a

European Standard without any modification.
__________
---------------------- Page: 3 ----------------------
– 3 – EN 61058-2-4:2005
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
The Annex ZB of EN 61058-1:2002 is applicable with the following addition:
Publication Year Title EN/HD Year
IEC 60227-3 (mod) 1993 Polyvinyl chloride insulated cables of HD 21.3 S3 1995
rated voltages up to and including + A1 1999
450/750 V
Part 3: Non-sheathed cables for fixed
wiring
A1 1997
———————

HD 21.3 S3:1995 and its A1:1999, which are related to, but not directly equivalent with IEC 60227-3:1993 and its

A1:1997, apply.
---------------------- Page: 4 ----------------------
NORME CEI
INTERNATIONALE IEC
61058-2-4
INTERNATIONAL
Edition 1.1
STANDARD
2003-03
Edition 1:1995 consolidée par l'amendement 1:2003
Edition 1:1995 consolidated with amendment 1:2003
Interrupteurs pour appareils –
Partie 2-4:
Règles particulières pour les interrupteurs
à montage indépendant
Switches for appliances –
Part 2-4:
Particular requirements for independently
mounted switches
 IEC 2003 Droits de reproduction réservés  Copyright - all rights reserved

Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any

utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including

électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from

microfilms, sans l'accord écrit de l'éditeur. the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

CODE PRIX
Commission Electrotechnique Internationale
PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 5 ----------------------
61058-2-4  IEC:1995+A1:2003 – 3 –
CONTENTS

FOREWORD .......................................................................................................................... 7

1 Scope .............................................................................................................................11

2 Normative references......................................................................................................13

3 Definitions ......................................................................................................................13

4 General requirement .......................................................................................................13

5 General notes on tests....................................................................................................13

6 Rating.............................................................................................................................13

7 Classification ..................................................................................................................15

8 Marking and documentation ............................................................................................17

9 Protection against electric shock.....................................................................................17

10 Provision for earthing......................................................................................................19

11 Terminals an terminations...............................................................................................19

12 Construction ...................................................................................................................21

13 Mechanism .....................................................................................................................35

14 Protection against solid foreign objects, ingress of dust, water,

and humid conditions ......................................................................................................35

15 Insulation resistance and dielectric strength....................................................................37

16 Heating...........................................................................................................................37

17 Endurance ......................................................................................................................37

18 Mechanical strength........................................................................................................37

19 Screws, current-carrying parts and connections ..............................................................37

20 Clearances, creepage distances, solid insulation and coatings

of rigid printed board assemblies ....................................................................................39

21 Resistance to heat and fire .............................................................................................39

22 Resistance to rusting ......................................................................................................39

23 Abnormal operation and fault conditions for electronic switches......................................39

24 Components ...................................................................................................................39

25 EMC requirements ..........................................................................................................39

Annex R (normative) Routine tests......................................................................................45

Annex S (informative) Sampling tests..................................................................................45

Annex T (informative) Switch families .................................................................................45

---------------------- Page: 6 ----------------------
61058-2-4  IEC:1995+A1:2003 – 5 –

Figure 101 – Example of pull apparatus for testing the cord anchorage.................................41

Figure 102 – Example of torque apparatus for testing the cord anchorage.............................41

Figure 103 – Example of apparatus for flexing test................................................................43

Table 3 – Switch information .................................................................................................17

Table 101 – Switch information .............................................................................................17

Table 102 – Rated currents for resistor loads and related type of cables...............................29

Table 103 – Torque values for torque test .............................................................................31

Table 104 – Torque values for screws of insulating material..................................................39

---------------------- Page: 7 ----------------------
61058-2-4 © IEC:1995+A1:2003 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SWITCHES FOR APPLIANCES –
Part 2-4: Particular requirements for
independently mounted switches
FOREWORD

1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.

3) The documents produced have the form of recommendations for international use and are published in the form

of standards, technical specifications, technical reports or guides and they are accepted by the National

Committees in that sense.

4) In order to promote international unification, IEC National Committees undertake to apply IEC International

Standards transparently to the maximum extent possible in their national and regional standards. Any

divergence between the IEC Standard and the corresponding national or regional standard shall be clearly

indicated in the latter.

5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with one of its standards.

6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject

of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.

This part of International Standard IEC 61058 has been prepared by subcommittee 23J:

Switches for appliances, of IEC technical committee 23: Electrical accessories.

This standard shall be used in conjunction with IEC 61058-1, Switches for appliances – Part 1:

General requirements (third edition, 2000). It lists the changes necessary to convert that standard

into the IEC standard: Particular requirements for independently mounted switches.

This part constitutes the first edition of IEC 61058-2-4.

This consolidated version of IEC 61058-2-4 consists of the first edition (1995) [documents

23J/132/FDIS and 23J/143/RVD] and its amendment 1 (2003) [documents 23J/253/FDIS and

23J/255/RVD].

The technical content is therefore identical to the base edition and its amendment and has

been prepared for user convenience.
It bears the edition number 1.1.

A vertical line in the margin shows where the base publication has been modified by

amendment 1.
The annex R forms an integral part of this standard.
The annexes S and T are for information only.
---------------------- Page: 8 ----------------------
61058-2-4  IEC:1995+A1:2003 – 9 –

The committee has decided that the contents of the base publication and its amendment 1 will

remain unchanged until 2007. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
In this part:
a) The following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– explanatory matter: in smaller roman type.

b) Subclauses, figures or tables which are additional to those in part 1 are numbered starting

from 101.
---------------------- Page: 9 ----------------------
61058-2-4  IEC:1995+A1:2003 – 11 –
SWITCHES FOR APPLIANCES –
Part 2-4: Particular requirements for
independently mounted switches
1 Scope
This clause of part 1 is applicable except as follows:
1.1 Replacement:

This International Standard applies to independently mounted switches for appliances

(mechanical or electronic) actuated by hand, by foot or by other human activity, to operate or

control electrical appliances and other equipment for household or similar purposes with a

rated voltage not exceeding 480 V and a rated current not exceeding 63 A.

These switches are intended to be operated by a person, via an actuating member or by

actuating a sensing unit. The actuating member or sensing unit can be integral with or

arranged separately, either physically or electrically, from the switch and may involve

transmission of a signal, for example electrical, optical, acoustic or thermal, between the

actuating member or sensing unit and the switch.

Switches which incorporate additional control functions governed by the switch function are

within the scope of this standard.

This standard also covers the indirect actuation of the switch when the operation of the

actuating member or sensing unit is provided by a remote control or a part of an appliance or

equipment such as a door.

NOTE 1 Electronic switches may be combined with mechanical switches giving full disconnection or micro-

disconnection.

NOTE 2 Electronic switches without a mechanical switch in the supply circuit provide only electronic

disconnection. Therefore, the circuit on the load side is always considered to be live.

NOTE 3 For switches used in tropical climates, additional requirements may be necessary.

NOTE 4 Attention is drawn to the fact that the standards for appliances may contain additional or alternative

requirements for switches.

NOTE 5 Throughout this standard, the word “appliance” means “appliance or equipment”.

1.2 This subclause of Part 1 is not applicable
1.3 This subclause of Part 1 is applicable.
1.4 This subclause of Part 1 is not applicable.
---------------------- Page: 10 ----------------------
61058-2-4  IEC:1995+A1:2003 – 13 –
2 Normative references
This clause of part 1 is applicable except as follows:
Addition:

IEC 60227-3:1997, Polyvinyl chloride insulated cables of rated voltages up to and including

450/750 V – Part 3: Non-sheathed cables for fixed wiring
3 Definitions
This clause of part 1 is applicable, except as follows:
Additional definitions:
3.3.101
independently mounted switch

switch intended to be mounted away from the controlled appliance or equipment and intended

to be connected to the fixed wiring on the supply side
3.3.102
design A switch
switch where the cover or coverplate can be removed without displacement of the
conductor(s)

NOTE Displacement means movement of the conductor, see IEC 60669-1, subclause 7.1.7.

3.3.103
design B switch

switch where the cover or coverplate cannot be removed without displacement of the

conductors

NOTE Displacement means movement of the conductor, see IEC 60669-1, subclause 7.1.7.

4 General requirement
This clause of part 1 is applicable.
5 General notes on tests
This clause of part 1 is applicable.
6 Rating
This clause of part 1 is applicable.
---------------------- Page: 11 ----------------------
61058-2-4  IEC:1995+A1:2003 – 15 –
7 Classification
This clause of part 1 is applicable, except as follows:
Replacement:

7.1.5 According to the degree of protection provided by the switch, when mounted as

declared:
7.1.5.1.1, 7.1.5.1.2 and 7.1.9.1 are not applicable.
7.1.15.2 This subclause of Part 1 is not applicable.
Additional subclauses:
7.1.101 According to design:
7.1.101.1 – design A switch;
7.1.101.2 – design B switch.
NOTE 1 See definitions 3.3.102 and 3.3.103.

NOTE 2 If a switch has a base which cannot be separated from the cover or cover plate, and requires an

intermediate plate which can be removed for redecorating the wall, it is considered to be of design A, provided the

intermediate plate meets the requirements specified for covers and cover plates.
7.1.102 According to outlet facilities:
7.1.102.1 – switch with inlet/outlet facilities for rigid cables;

7.1.102.2 – switch with inlet facilities for rigid cables and outlet facilities for flexible cables.

---------------------- Page: 12 ----------------------
61058-2-4  IEC:1995+A1:2003 – 17 –
8 Marking and documentation
This clause of Part 1 is applicable with the following modifications in Table 3:
Table 3 – Switch information
Means of information
Common Unique
Characteristic Subclause
No.
type type
reference reference
C.T. U.T.
2 SWITCH ENVIRONMENT/MOUNTING
2.1 Degree of protection provided for the switch when 7.1.5.1 and Ma Ma
mounted according to documentation 7.1.5.2
(IP code of IEC 60529)
NOTE Additional letters listed in IEC 60529 are not used.
4 ELECTRICAL LOAD/CONNECTION
4.1 Rated voltage or rated voltage range 6.1 Ma Ma
101 SWITCH DESIGN
101.1 Type of switch design 7.1.101 Do Do
102 OUTLET FACILITIES
102.1 Type of outlet facilities 7.1.102 Do Do
Addition:
Table 101 – Switch information
No. Subclause
Switch with unique-type-reference ……………………………………..... U.t.
Switch with common-type-reference ………………………….…………. C.T.
101 SWITCH DESIGN
101.1 Type of switch design 7.1.101 Do Do
102 OUTLET FACILITIES
102.1 Type of outlet facilities 7.1.102 Do Do
9 Protection against electric shock
This clause of part 1 is applicable except as follows:
9.1 Add the following sentence to a):

The switch shall be fitted with the conductor of the smallest or largest nominal cross-sectional

area according to Table 4 whichever is more unfavourable, or with a rigid conduit, a pliable

conduit or a flexible conduit.
---------------------- Page: 13 ----------------------
61058-2-4  IEC:1995+A1:2003 – 19 –
Addition to b):

This test finger, with an electrical indicator, is not applied to membranes in inlet openings and

is applied to thin-walled knock-outs with a force of only 10 N.
Additional subclause:

9.101 Switches operated by means of a removable key or by means of an intermediate part,

such as a cord, a chain or a rod, shall be so designed that the key or intermediate part can

only touch parts which are insulated from live parts.

The key or intermediate part shall be insulated from metal parts of the mechanism, unless the

clearances and creepage distances between live parts and metal parts of the mechanism

have at least the values specified in 20.1.4 and 20.2.4.

Compliance is checked by inspection, by the test of 15.3 and, if necessary, by measurement.

NOTE Lacquer or enamel is not considered to be insulating material for the purpose of this clause.

10 Provision for earthing
This clause of part 1 is applicable, except as follows:
Additional subclause:

10.101 Switches for class I appliances shall have provision for earthing continuity

connection.
11 Terminals an terminations
This clause of part 1 is applicable, except as follows:
Table 4 Additional note:

NOTE Switches with a rated current of 10 A and less shall have terminals accepting conductors having a cross-

sectional area of 1,5 mm .
11.1.1.2.2 Addition to a):

When testing with rigid conductors the tests are carried out first with rigid stranded conductors

and the tests are then repeated with rigid solid conductors if a solid conductor with the same

cross-sectional area is specified in IEC 60227-3.
Additional subclauses:

11.1.2.101 Terminals classified in 7.2.4 are in general not permitted. Such terminals may

however in particular cases be permitted for the load side of the switch (see 11.1.3).

---------------------- Page: 14 ----------------------
61058-2-4  IEC:1995+A1:2003 – 21 –

11.1.3.101 The power supply cable shall be connected only by a method of attachment such

that the cable can be replaced without the aid of special purpose tools or by a cable not

requiring special preparation. Connection from the switch to the appliance shall normally be

performed in a similar way, but may in particular cases (e.g. a particular manufactured

connection between the switch and the appliance) be made by a method of attachment such

that the cable can only be replaced with the aid of special purpose tools normally available to

the manufacturer or his agent.

A method of attachment such that the cable cannot be replaced without destroying the

integrity of the switch shall not be used.
12 Construction
This clause of part 1 is not applicable.
Replacement:

12.101 Insulating linings, barriers and the like, shall have adequate mechanical strength and

shall be secured in a reliable manner.
Compliance is checked by inspection after the tests of clause 18.
12.102 Switches shall be so constructed as to permit:
– easy introduction and connection of the conductors in the terminals;

– adequate space between the underside of the base and the surface on which the base is

mounted or between the sides of the base and the enclosure (cover or box) so that, after

installation of the switch, the insulation of the conductors does not come in contact with

live parts of different polarity or with moving parts of the mechanism, such as the spindle

of a rotary switch;

NOTE This requirement does not imply that the metal parts of the terminals are necessarily protected by

insulating barriers or insulating shoulders, to avoid contacts, due to incorrect installation of the terminal metal

parts, with the insulation of the conductor.

– easy fixing of the base to a wall or in a box and correct positioning of the conductors.

NOTE For surface-type switches, mounted on a mounting plate, a wiring channel may be needed to comply with

this requirement.

In addition, switches classified according to 7.1.101.1 (design A switch) shall permit an easy

positioning and removal of the cover or cover plate, without displacing the conductors.

Compliance is checked by inspection and by an installation test with conductors of the largest

cross-sectional area for the relevant terminal size, in table 4.

12.103 Covers and cover plates or parts of them, which are intended to ensure protection

against electric shock, shall be held in place at two or more points by effective fixing.

Covers and cover plates or parts of them may be fixed by means of a single fixing, e.g. by a

screw, provided that they are retained in position by another means (e.g. by a shoulder).

NOTE 1 It is recommended that the fixings of covers and cover plates or parts of them be captive. The use of

tight fixing washers of cardboard or the like is deemed to be an adequate method for securing screws intended to

be captive.
---------------------- Page: 15 ----------------------
61058-2-4  IEC:1995+A1:2003 – 23 –

NOTE 2 Live parts and non-earthed metal parts separated from live parts in such a way that creepage distances

and clearances have values specified in clause 20 are not considered as accessible if the requirements of this

subclause are met.

For switches with a degree of protection IPX0 the fixing of covers or cover plates shall not

serve to fix any other part, except the knobs.

When the fixings of covers or cover plates serve also to fix the base, there shall be sufficient

means to maintain the base in position after removal of the cover or cover plate

Decorative covers, cover plates or parts thereof, not providing protection against electric

shock, are not considered as covers or cover plates in the meaning of this subclause.

12.103.1 For covers and cover plates or parts of them, whose fixing is of the screw-type

compliance is checked by inspection and by an installation test.

12.103.2 For covers and cover plates or parts of them, whose fixing is not dependent on

screws and whose removal is obtained by applying a force in a direction approximately

perpendicular to the mounting/supporting surface, compliance is checked by applying the test

of 13.3.2 under the conditions of 20.4 to 20.6 of IEC 60669-1.

12.104 Surface-type switches with degree of protection IPX0 shall be so constructed that,

when they are fixed and wired as in normal use, there are no free openings in their

enclosures.

Compliance is checked by inspection and by an installation test with conductors of the cross-

sectional area specified in table 4.

NOTE Small gaps between enclosures and conduits or cables, or between enclosures and operating means are

neglected.

12.105 Knobs of rotary switches shall be securely coupled to the shaft or part operating the

mechanism.
The knob is subjected for 1 min to an axial pull of 100 N.

In addition, for knobs of switches having only one direction of operation, a torque of 1 Nm or

the actuating torque if this is greater, is applied 100 times in the direction opposite to the

direction of operation.
During the test, the knob shall not become detached.

NOTE Requirements for the fixation of other types of actuating members are under consideration.

12.106 Screws or other means for mounting the switch on a surface or in a box or enclosure

apart from panel mounting shall be easily accessible from the front. These means shall not

serve any other fixing purpose.

12.107 Other electrical accessories combined with switches shall comply with the

requirements of the standard for the accessory in question.

12.108 Switches other than those with degree of protection IPX0 shall be totally enclosed

when fitted with conduits or cables.

Surface-type switches other than those with degree of protection IPX0 shall have provision for

opening a drain hole at least 5 mm in diameter, or 20 mm in area with a width and length of

at least 3 mm.
---------------------- Page: 16 ----------------------
61058-2-4  IEC:1995+A1:2003 – 25 –

The drain hole shall be effective in at least two positions of the switch when this is mounted

on a vertical wall, one of these with the conductors entering at the top and the other with the

conductors entering at the bottom.

Compliance is checked by measurement and by inspection during the relevant tests of 14.3.

NOTE A drain hole in the back of the enclosure is deemed to be effective only if the design of the enclosure

ensures a clearance of at least 5 mm from the wall, or provides a drainage channel of at least the size specified.

12.109 Switches to be installed in a box shall be so designed that the conductor ends can be

prepared after the box is mounted in position, but before the switch is fitted in the box.

In addition, the base shall have adequate stability when mounted in the box.

Compliance is checked by inspection and by an installation test with the appropriate cable

with conductors of the largest cross-sectional areas specified, for the relevant terminal size, in

table 4.

12.110 Single pole surface type switches of an IP degree higher than X0 with an enclosure

having more than one inlet opening shall be provided with an additional terminal for

maintaining the continuity of a second current carrying conductor and complying with the

appropriate requirements of
...

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