SIST EN 60670-24:2013

Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical equipment (IEC 60670-24:2011, modified)

This part of IEC 60670 applies to enclosures and parts of them for housing protective devices and other power dissipating electrical equipment intended to be used with a rated voltage not exceeding 400 V and a total incoming load current not exceeding 125 A for household and similar fixed electrical installations. These enclosures are intended to be installed where unskilled persons have access. They are intended to be integrated with electrical equipment on site by skilled persons (installers). They are intended to be installed where the prospective short circuit current does not exceed 10 kA unless they are protected by current limiting protective devices with a cut-off current not exceeding 17 kA. Enclosures complying with this standard are suitable for use, after installation, at ambient temperature not normally exceeding 25 °C, but occasionally reaching 35 °C over 24 h, max. 40 °C and min. –5 °C. An enclosure which is an integral part of an electrical accessory and provides protection against external influences (e.g. mechanical impacts, ingress of solid objects or of water), is covered by the relevant standard for such an accessory. This standard does not apply to a low-voltage switchgear and controlgear assembly(ASSEMBLY) as defined in the IEC 60439 or IEC 61439 series of standards nor to a main entrance panel which may or may not be part of the distribution board.

Dosen und Gehäuse für Installationsgeräte für Haushalt und ähnliche ortsfeste elektrische Installationen - Teil 24: Besondere Anforderungen für Gehäuse zur Aufnahme von Schutzgeräten und ähnlichen energieverbrauchenden Geräten (IEC 60670-24:2011, modifié)

Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes pour usages domestiques et analogues - Partie 24: Exigences particulières pour enveloppes pour appareillages de protection et autres appareillages électriques ayant une puissance dissipée (CEI 60670-24:2011, modifiziert)

La CEI 60670-24:2011 s'applique aux enveloppes et à leurs parties pour appareillages de protection et autres appareillages électriques ayant une puissance dissipée, destinés à être utilisés avec une tension assignée n'excédant pas 400 V et un courant de charge total à l'arrivée n'excédant pas 125 A pour les installations électriques fixes pour usages domestiques et analogues. Cette deuxième édition annule et remplace la première édition parue en 2005 et constitue une révision technique. Les principales modifications introduites par rapport à la première édition sont les suivantes:
- nouvelle définition pour les enveloppes simples, les enveloppes à usage général (enveloppe GP) et les enveloppes à usage prédéterminé (enveloppe PD);
- nouvelle classification et marquage pour les enveloppes à usage général (enveloppe GP) et les enveloppes à usage prédéterminé (enveloppe PD);
- informations requises dans les notices et/ou la documentation selon le type d'enveloppe;
- espace suffisant permettant le montage et le raccordement de l'appareillage (entièrement équipés) tels que déclarés par le fabricant;
- exigences pour les enveloppes à usage général (enveloppe GP) dans l'Article 101;
- exigences pour les enveloppes à usage prédéterminé (enveloppe PD) dans l'Article 102;
- instructions devant être fournies par le fabricant de l'enveloppe GP à l'installateur sur la façon d'intégrer les appareillages, et exemple de calcul décrites dans l'Annexe AA;
- instructions devant être fournies par le fabricant de l'enveloppe PD à l'installateur sur la façon d'intégrer les appareillages décrites dans l'Annexe BB.
Cette publication doit être lue conjointement avec la CEI 60670-1:2002.

Doze in ohišja za električni pribor za gospodinjske in podobne nepremične električne napeljave - 24. del: Posebne zahteve za ohišja stanovanjskih za vgradnjo zaščitnih naprav in druge električne opreme, ki porablja energijo (IEC 60670-24:2011, spremenjen)

Ta del standarda IEC 60670 se uporablja za ohišja in dele ohišij za shranjevanje zaščitnih naprav in druge električne opreme, ki razsipa električno energijo, pri čemer so namenjeni za uporabo z nazivno napetostjo, ki ne presega 400 V, in skupno vhodno obremenitvijo, ki ne presega 125 A, za gospodinjske in podobne nepremične električne naprave. Ta ohišja so namenjena za namestitev na mestih, do katerih imajo dostop neusposobljene osebe. Namenjeno je, da jih v električno opremo na mestu uporabe vgradi usposobljena oseba (monter). Namenjena so uporabi na mestih, kjer morebitni kratkostični tok ne presega 10 kA, razen če so zaščiteni z napravo za omejevanje toka z omejitvijo toka, ki ne presega 17 kA. Ohišja, ki so skladna s tem standardom, so po namestitvi primerna za uporabo pri temperaturi okolja, ki običajno ne presega 25 °C, vendar lahko občasno za obdobje, daljše od 24 ur, doseže 35 °C, in sicer največ 40 °C in najmanj –5 °C. Ohišje, ki je sestavni del električnega pribora in mu nudi zaščito pred zunanjimi vplivi (npr. mehanskim udarcem, vdorom trdnih predmetov ali vode), je vključeno v ustrezni standard, ki obravnava ta pribor. Ta standard se ne uporablja za sestave (SESTAVI) nizkonapetostnih stikalnih in krmilnih naprav, ki so opredeljeni v skupini standardov IEC 60439 ali IEC 61439, ali za glavno vhodno ploščo, ki je lahko del razdelilne omare.

General Information

• Status: Published
• Publication Date: 25-Apr-2013
• ICS: 29.120.99 - Other electrical accessories
• Technical Committee: EPR - Electrical accessories
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 23-Apr-2013
• Due Date: 28-Jun-2013
• Completion Date: 26-Apr-2013
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Ref Project: EN 60670-24:2013 - Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical equipment

Relations

• Amended By: SIST EN 60670-24:2013/A11:2023 - Boxes and enclosures for electrical accessories for household and similar fixed electrical installations - Part 24: Particular requirements for enclosures for housing protective devices and other power dissipating electrical equipment
• Effective Date: 10-Nov-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60670-24:2013
01-junij-2013
'R]HLQRKLãMD]DHOHNWULþQLSULERU]DJRVSRGLQMVNHLQSRGREQHQHSUHPLþQH
HOHNWULþQHQDSHOMDYHGHO3RVHEQH]DKWHYH]DRKLãMDVWDQRYDQMVNLK]D
YJUDGQMR]DãþLWQLKQDSUDYLQGUXJHHOHNWULþQHRSUHPHNLSRUDEOMDHQHUJLMR,(&
VSUHPHQMHQ
Boxes and enclosures for electrical accessories for household and similar fixed electrical
installations - Part 24: Particular requirements for enclosures for housing protective
devices and other power dissipating electrical equipment (IEC 60670-24:2011, modified)
Dosen und Gehäuse für Installationsgeräte für Haushalt und ähnliche ortsfeste
elektrische Installationen - Teil 24: Besondere Anforderungen für Gehäuse zur Aufnahme
von Schutzgeräten und ähnlichen energieverbrauchenden Geräten (IEC 60670-24:2011,
modifié)
Boîtes et enveloppes pour appareillage électrique pour installations électriques fixes
pour usages domestiques et analogues - Partie 24: Exigences particulières pour
enveloppes pour appareillages de protection et autres appareillages électriques ayant
une puissance dissipée (CEI 60670-24:2011, modifiziert)
Ta slovenski standard je istoveten z: EN 60670-24:2013
ICS:
29.120.99 'UXJDHOHNWULþQDGRGDWQD Other electrical accessories
RSUHPD
SIST EN 60670-24:2013 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60670-24:2013

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SIST EN 60670-24:2013

EUROPEAN STANDARD
EN 60670-24

NORME EUROPÉENNE
April 2013
EUROPÄISCHE NORM

ICS 29.120.10


English version


Boxes and enclosures for electrical accessories for household and similar
fixed electrical installations -
Part 24: Particular requirements for enclosures for housing protective
devices and other power dissipating electrical equipment
(IEC 60670-24:2011, modified)


Boîtes et enveloppes pour appareillage Dosen und Gehäuse für
électrique pour installations électriques Installationsgeräte für Haushalt und
fixes pour usages domestiques et ähnliche ortsfeste elektrische
analogues - Installationen -
Partie 24: Exigences particulières pour Teil 24: Besondere Anforderungen für
enveloppes pour appareillages de Gehäuse zur Aufnahme von
protection et autres appareillages Schutzgeräten und ähnlichen
électriques ayant une puissance dissipée energieverbrauchenden Geräten
(CEI 60670-24:2011, modifiée) (IEC 60670-24:2011, modifiziert)



This European Standard was approved by CENELEC on 2013-03-04. 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, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60670-24:2013 E

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SIST EN 60670-24:2013
EN 60670-24:2013 - 2 -

Contents Page

Foreword . 3
1 Scope . 4
2 Normative references . 4
3 Definitions . 4
7 Classification . 4
8 Marking . 4
12 Construction . 4
13 Resistance to ageing, protection against ingress of solid foreign objects and against
harmful ingress of water . 4
17 Creepage distances, clearances and distances through sealing compound . 5
101 Verification of the maximum capability to dissipate power (P ) . 5
de
Annex ZA (normative) Normative references to international publications with their
corresponding European publications . 6
Annex ZB (normative) Special national conditions . 7
Annex ZC (informative) A-deviations . 8

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SIST EN 60670-24:2013
- 3 - EN 60670-24:2013
Foreword
This document (EN 60670-24:2013) consists of the text of IEC 60670-24:2011 prepared by IEC/SC 23B
"Plugs, socket-outlets and switches" of IEC/TC 23 "Electrical accessories", together with the common
modifications prepared by CLC/TC 23BX "Switches, boxes and enclosures for household and similar
purposes, plugs and socket outlets for d.c. and for the charging of electrical vehicles including their
connectors".
The following dates are fixed:
(dop) 2014-03-04
• latest date by which this document has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dow) 2018-03-04
• latest date by which the national standards conflicting
with this document have to be withdrawn
This Part 24 is to be used in conjunction with EN 60670-1:2005. It lists the changes necessary to convert
that standard into a specific standard for housing protective devices and other power dissipating electrical
equipment.
Where this Part 24 states "addition“, "modification“ or "replacement“, the relevant requirement, test
specifications or explanatory matter in Part 1 shall be adapted accordingly.
Clauses and subclauses, notes, figures or tables which are additional to those in Part 1 are numbered
starting from 101.

Additional annexes to Part 1 are numbered AA, BB, etc.

In this publication the following print types are used:
• requirements proper: in roman type.
• test specifications: in italic type.
• notes: in smaller roman type.
Clauses, subclauses, notes, tables and figures which are additional to those in IEC 60670-24:2011 are
prefixed “Z”.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed
for Use within Certain Voltage Limits (LVD - 2006/95/EC).

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SIST EN 60670-24:2013
EN 60670-24:2013 - 4 -


Endorsement notice
The text of the International Standard IEC 60670-24:2011 was approved by CENELEC as a European
Standard with agreed common modifications.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 60439-3:1991 NOTE  Harmonised as EN 60439-3:1991 (modified).

COMMON MODIFICATIONS
1 Scope
Delete NOTES 2 and 3.
2 Normative references
Replace by the following:
See Annex ZA.
3 Definitions
In 3.101, delete 'BE'.
7 Classification
Delete the notes at the end of the addition to Table 1.
8 Marking
In 8.101, bullet 3, delete from the dashed texts twice the words "accompanying the enclosure".
12 Construction
Replace the title of 12.11 by the following:
12.11 Enclosures classified according to 7.2.1.3
Replace the first paragraph by the following:
"Enclosures for hollow walls classified according to 7.2.1.3 shall provide suitable means for fixing the
enclosure to hollow walls."
In 12.101, delete the NOTE.
13 Resistance to ageing, protection against ingress of solid foreign objects and
against harmful ingress of water
In 13.2, delete the NOTE.

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SIST EN 60670-24:2013
- 5 - EN 60670-24:2013
17 Creepage distances, clearances and distances through sealing compound
Replace the first paragraph after Table 101 by:
"Compliance is checked by inspection and in case of doubt by measurement between the following
parts:"
101 Verification of the maximum capability to dissipate power (P )
de
Delete NOTE 103.

Annexes
Add the following annexes.

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SIST EN 60670-24:2013
EN 60670-24:2013 - 6 -

Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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.
Addition to the Annex ZA of EN 60670-1:2005:
Publication Year Title EN/HD Year
IEC 60417 - Graphical symbols for use on equipment - -
IEC 60898-1 - Electrical accessories - Circuit breakers for EN 60898-1 -
overcurrent protection for household and similar
installations
Part 1: Circuit-breakers for a.c. operation
IEC 61008-2-1 - Residual current operated circuit-breakers without EN 61008-2-1 -
integral overcurrent protection for household and
similar uses (RCCB's)
Part 2-1: Applicability of the general rules to
RCCB's functionally independent of line voltage
IEC 61009-2-1 - Residual current operated circuit-breakers with EN 61009-2-1 -
integral overcurrent protection for household and
similar uses (RCBO's)
Part 2-1: Applicability of the general rules to
RCBO's functionally independent of line voltage
IEC 62262 - Degrees of protection provided by enclosures for EN 62262 -
electrical equipment against external mechanical
impacts (IK code)

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SIST EN 60670-24:2013
- 7 - EN 60670-24:2013
Annex ZB
(normative)

Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a long
period, e.g. climatic conditions, electrical earthing conditions.
NOTE  If it affects harmonization, it forms part of the European Standard.
For the countries in which the relevant special national conditions apply these provisions are normative,
for other countries they are informative.
Clause Special national condition
1 Denmark
This standard can only be used for GP enclosures with the instructions according to
Annex A. For the other types of enclosures the integration of mechanical and electrical
devices into an enclosures are verified by compliance with DS EN 60439-3.
7 Denmark, Italy
Only enclosures according to 7.101.1 and 7.102.1 can be used.
Belgium, Germany, France, Greece
Only enclosures classified according to 7.101.2 and 7.102.2 can be used.
12.101
United Kingdom
The text of this clause does not apply. Cables are retained using fixing means
applied during installation by the installer.
Denmark
13.2
In the case of an enclosure with a door or a lid which can be opened without the
use of a tool during normal use, a minimum degree of IP30 shall be maintained
after opening the door or the lid.

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SIST EN 60670-24:2013
EN 60670-24:2013 - 8 -

Annex ZC
(informative)

A-deviations
A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the
competence of the CENELEC national member.
This European Standard falls under Directive 2006/95/EC.
NOTE (from CEN/CENELEC IR Part 2:2011, 2.17)  Where standards fall under EU Directives, it is the view of the
Commission of the European Communities (OJ No C 59, 1982-03-09) that the effect of the decision of the Court of
Justice in case 815/79 Cremonini/Vrankovich (European Court Reports 1980, p. 3583) is that compliance with A-
deviations is no longer mandatory and that the free movement of products complying with such a standard should not
be restricted except under the safeguard procedure provided for in the relevant Directive.
A-deviations in an EFTA-country are valid instead of the relevant provisions of the European Standard in
that country until they have been removed.
Clause Deviation

1 United Kingdom
{Electricity, Safety, Quality and Continuity Regulations; SI ‘2002 2665’}
Add after the second paragraph:
This standard cannot be used in installations with a 230 V single-phase supply rated up to
100 A that is under the control of ordinary persons. Integration of mechanical and
electrical devices into an enclosure must be verified by compliance with BS EN 60439-3.

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SIST EN 60670-24:2013
IEC 60670-24
®

Edition 2.0 2011-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Boxes and enclosures for electrical accessories for household and similar fixed
electrical installations –
Part 24: Particular requirements for enclosures for housing protective devices
and other power dissipating electrical equipment

Boîtes et enveloppes pour appareillage électrique pour installations électriques
fixes pour usages domestiques et analogues –
Partie 24: Exigences particulières pour enveloppes pour appareillages de
protection et autres appareillages électriques ayant une puissance dissipée

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 29.120.10 ISBN 978-2-88912-391-9

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 11 ----------------------

SIST EN 60670-24:2013
– 2 – 60670-24  IEC:2011
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Definitions . 7
4 General requirements . 8
5 General notes on tests . 8
6 Ratings . 8
7 Classification . 8
8 Marking . 8
9 Dimensions . 10
10 Protection against electric shock. 10
11 Provisions for earthing . 11
12 Construction . 11
13 Resistance to ageing, protection against ingress of solid foreign objects and
against harmful ingress of water . 12
14 Insulation resistance and electric strength . 12
15 Mechanical strength . 12
16 Resistance to heat . 12
17 Creepage distances, clearances and distances through sealing compound . 12
18 Resistance of insulating material to abnormal heat and to fire. 13
19 Resistance to tracking . 13
20 Resistance to corrosion . 14
21 Electromagnetic compatibility . 14
101 Verification of the maximum capability to dissipate power (P ) . 14
de
102 Verification of temperature rise . 15
Annex AA (normative) Instructions to be given by the manufacturer of the GP
enclosure to the installer how to integrate accessories, and example of calculation . 22
Annex BB (normative) Instructions to be given by the manufacturer of the PD
enclosure to the installer how to integrate accessories . 30
Bibliography . 32

Figure 101 – Arrangement for the verification of the maximum capability to dissipate
power (P ) and for verification of temperature rise of surface type enclosures . 17
de
Figure 102 – Heating resistor for the verification of the maximum capability to dissipate
) . 18
power (P
de
Figure 103 – Position of the resistor for enclosures designed or intended to be fitted
with rail mounting modular accessories and electrical equipment . 19
Figure 104 – Position of the resistor(s) for enclosures other than those designed or
intended to be fitted with rail mounting accessories and electrical equipment . 20
Figure 105 – Position of the resistor(s) for enclosures other than those designed or
intended to be fitted with rail mounting accessories and electrical equipment and
allowing the mounting of several accessories and electrical equipment in different
positions . 21

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SIST EN 60670-24:2013
60670-24  IEC:2011 – 3 –
Table 1 – Classification of boxes and enclosures . 8
Table 101 – Creepage distances, clearances and distances through sealing compound . 13
Table 102 – Diversity factor . 16
Table 103 – Temperatures of accessible surfaces . 17
Table AA.1 – Diversity factor . 24
Table AA.2 – Tests and verifications . 25
Table AA.3 – Calculation of P . 28
dp
Table AA.4 – Calculation of P . 29
au

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SIST EN 60670-24:2013
– 4 – 60670-24  IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

BOXES AND ENCLOSURES FOR ELECTRICAL ACCESSORIES FOR
HOUSEHOLD AND SIMILAR FIXED ELECTRICAL INSTALLATIONS –

Part 24: Particular requirements for enclosures for housing protective
devices and other power dissipating electrical equipment


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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60670-24 has been prepared by subcommittee 23B: Plugs, socket-
outlets and switches, of IEC technical committee 23: Electrical accessories.
This second edition cancels and replaces the first edition published in 2005 and constitutes a
technical revision.
The following major changes from the first edition are introduced:
• new definition for basic, general purpose enclosures (GP enclosure) and enclosures for
pre-determined equipment (PD enclosure);
• new classification and marking for general purpose enclosure (GP enclosure) and
enclosure for pre-determined equipment (PD enclosure);
• required data for instruction sheet and/or documentation according to the type of
enclosure;

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SIST EN 60670-24:2013
60670-24  IEC:2011 – 5 –
• adequate space to allow mounting and connection of the accessories (fully equipped) as
declared by the manufacturer;
• requirements for general purpose enclosure (GP enclosure) as in Clause 101;
• requirements for enclosure for pre-determined equipment (PD enclosure) as in Clause
102;
• instructions to be given by the manufacturer of the GP enclosure to the installer how to
integrate accessories and example of calculation given in Annex AA;
• instructions to be given by the manufacturer of the PD enclosure to the installer how to
integrate accessories given in Annex BB.
The text of this standard is based on the following documents:
FDIS Report on voting
23B/982/FDIS 23B/992/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This standard shall be used in conjunction with IEC 60670-1. It lists the changes necessary to
convert that standard into a specific standard for housing protective devices and other power
dissipating electrical equipment.
Where this Part 24 states "addition“, "modification“ or "replacement“, the relevant
requirement, test specifications or explanatory matter in Part 1 shall be adapted accordingly.
Clauses and subclauses, notes, figures or tables which are additional to those in Part 1 are
numbered starting from 101.
Additional annexes to Part 1 are numbered AA, BB, etc.
In this publication the following print types are used:
• requirements proper: in roman type.
• test specifications: in italic type.
• notes: in smaller roman type.
A list of all the parts in the IEC 60670 series, under the general title Boxes and enclosures for
electrical accessories for household and similar fixed electrical installations, can be found on
the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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SIST EN 60670-24:2013
– 6 – 60670-24  IEC:2011
BOXES AND ENCLOSURES FOR ELECTRICAL ACCESSORIES FOR
HOUSEHOLD AND SIMILAR FIXED ELECTRICAL INSTALLATIONS –

Part 24: Particular requirements for enclosures for housing protective
devices and other power dissipating electrical equipment



1 Scope
Replacement:
This part of IEC 60670 applies to enclosures and parts of them for housing protective devices
and other power dissipating electrical equipment intended to be used with a rated voltage not
exceeding 400 V and a total incoming load current not exceeding 125 A for household and
similar fixed electrical installations.
These enclosures are intended to be installed where unskilled persons have access. They are
intended to be integrated with electrical equipment on site by skilled persons (installers).
They are intended to be installed where the prospective short circuit current does not exceed
10 kA unless they are protected by current limiting protective devices with a cut-off current not
exceeding 17 kA.
Enclosures complying with this standard are suitable for use, after installation, at ambient
temperature not normally exceeding 25 °C, but occasionally reaching 35 °C over 24 h, max.
40 °C and min. –5 °C.
An enclosure which is an integral part of an electrical accessory and provides protection
against external influences (e.g. mechanical impacts, ingress of solid objects or of water), is
covered by the relevant standard for such an accessory.
This standard does not apply to a low-voltage switchgear and controlgear assembly
(ASSEMBLY) as defined in the IEC 60439 or IEC 61439 series of standards nor to a main
entrance panel which may or may not be part of
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