EN 61439-2:2011

SLOVENSKI STANDARD
01-april-2012
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SIST EN 61439-2:2010
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Low-voltage switchgear and controlgear assemblies - Part 2: Power switchgear and
controlgear assemblies (IEC 61439-2:2011)
Niederspannungs-Schaltgerätekombinationen - Teil 2: Energie-
Schaltgerätekombinationen (IEC 61439-2:2011)
Ensembles d'appareillage à basse tension - Partie 2: Ensembles d'appareillage de
puissance (CEI 61439-2:2011)
Ta slovenski standard je istoveten z: EN 61439-2:2011
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 61439-2
NORME EUROPÉENNE
October 2011
EUROPÄISCHE NORM
ICS 29.130.20 Supersedes EN 61439-2:2009

English version
Low-voltage switchgear and controlgear assemblies -
Part 2: Power switchgear and controlgear assemblies
(IEC 61439-2:2011)
Ensembles d'appareillage  Niederspannungs-
à basse tension - Schaltgerätekombinationen -
Partie 2: Ensembles d'appareillage de Teil 2: Energie-
puissance Schaltgerätekombinationen
(CEI 61439-2:2011) (IEC 61439-2:2011)

This European Standard was approved by CENELEC on 2011-09-23. 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland 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

© 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61439-2:2011 E
Foreword
The text of document 17D/440/FDIS, future edition 2 of IEC 61439-2, prepared by SC 17D, "Low-voltage
switchgear and controlgear assemblies", of IEC/TC 17, "Switchgear and controlgear" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN 61439-2:2011.
The following dates are fixed:
(dop) 2012-06-23
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2014-09-23

standards conflicting with the
document have to be withdrawn
This document supersedes EN 61439-2:2009.
— clarification of the scope;
— revision of requirements for withdrawable and removable parts;
— revision of mechanical impact test (10.2.6);
— extension of Table 101;
— review of Table BB.1 to reflect modified requirements and verifications;
— general editorial review.
This standard is to be read in conjunction with EN 61439-1. The provisions of the general rules dealt with
in EN 61439-1 (hereinafter referred to as Part 1) are only applicable to this standard insofar as they are
specifically cited. When this standard states “addition”, “modification” or “replacement”, the relevant text in
Part 1 is to be adapted accordingly.
Subclauses that are numbered with a 101 (102, 103, etc.) suffix are additional to the same subclause in
Part 1.
Tables and figures in this Part 2 that are new are numbered starting with 101.
New annexes in this Part 2 are lettered AA, BB, etc.
In this standard, terms written in small capitals are defined in Clause 3.
NOTE Throughout the EN 61439 series of standards, the term ASSEMBLY (see 3.1.1 of Part 1) is used for a low-voltage switchgear
and controlgear assembly.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent
rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive see informative Annex ZZ, which is an integral part of this
document.
Endorsement notice
The text of the International Standard IEC 61439-2:2011 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 61439-2:2011
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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Addition to Annex ZA of EN 61439-1:

Publication Year Title EN/HD Year

IEC 60947-3 2008 Low-voltage switchgear and controlgear - EN 60947-3 2009
Part 3: Switches, disconnectors, switch-
disconnectors and fuse-combination units

IEC 61140 - Protection against electric shock - Common EN 61140 -
aspects for installation and equipment

IEC 61439-1 2011 Low-voltage switchgear and controlgear EN 61439-1 2011
assemblies -
Part 1: General rules
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directive 2004/108/EC
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant essential requirements as given in Article 1 of Annex I of the EC Directive 2004/108/EC.
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directives concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling within
the scope of this standard.
IEC 61439-2 ®
Edition 2.0 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear assemblies –
Part 2: Power switchgear and controlgear assemblies

Ensembles d'appareillage à basse tension –
Partie 2: Ensembles d'appareillage de puissance

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 29.130.20 ISBN 978-2-88912-605-7

– 2 – 61439-2  IEC:2011
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols and abbreviations . 7
5 Interface characteristics . 7
6 Information . 8
7 Service conditions . 8
8 Constructional requirements . 8
9 Performance requirements . 11
10 Design verification . 11
11 Routine verification . 12
Annex AA (informative) Forms of internal separation (see 8.101) . 16
Annex BB (informative) Items subject to agreement between the ASSEMBLY
manufacturer and the user . 19
Bibliography . 23

Figure AA.1 – Symbols used in Figures AA.2 and AA.3 . 16
Figure AA.2 – Forms 1 and 2 . 17
Figure AA.3 – Forms 3 and 4 . 18

Table 101 – Values of assumed loading . 12
Table 102 – Test voltages across the open contacts of equipment suitable for isolation . 12
Table 103 – Electrical conditions for the different positions of withdrawable parts . 13
Table 104 – Forms of internal separation . 14
Table BB.1 – Items subject to agreement between the ASSEMBLY manufacturer and the
user . 19

61439-2  IEC:2011 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND
CONTROLGEAR ASSEMBLIES –
Part 2: Power switchgear and controlgear assemblies

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 61439-2 has been prepared by subcommittee 17D: Low-voltage
switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and
controlgear.
This second edition cancels and replaces the first edition published in 2009. It constitutes a
technical revision.
This second edition includes the following significant technical changes with respect to the
last edition of IEC 61439-2:
• clarification of the scope;
• revision of requirements for withdrawable and removable parts;
• revision of mechanical impact test (10.2.6);
• extension of Table 101;
– 4 – 61439-2  IEC:2011
• review of Table BB.1 to reflect modified requirements and verifications;
• general editorial review.
The text of this standard is based on the following documents:
FDIS Report on voting
17D/440/FDIS 17D/445/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 is to be read in conjunction with IEC 61439-1. The provisions of the general
rules dealt with in IEC 61439-1 (hereinafter referred to as Part 1) are only applicable to this
standard insofar as they are specifically cited. When this standard states “addition”,
“modification” or “replacement”, the relevant text in Part 1 is to be adapted accordingly.
Subclauses that are numbered with a 101 (102, 103, etc.) suffix are additional to the same
subclause in Part 1.
Tables and figures in this Part 2 that are new are numbered starting with 101.
New annexes in this Part 2 are lettered AA, BB, etc.
In this standard, terms written in small capitals are defined in Clause 3.
NOTE Throughout the IEC 61439 series of standards, the term ASSEMBLY (see 3.1.1 of Part 1) is used for a low-
voltage switchgear and controlgear assembly.
A list of all parts of the IEC 61439 series, under the general title Low-voltage switchgear and
controlgear assemblies 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.
61439-2  IEC:2011 – 5 –
LOW-VOLTAGE SWITCHGEAR AND
CONTROLGEAR ASSEMBLIES –
Part 2: Power switchgear and controlgear assemblies

1 Scope
NOTE 1 Throughout this part, the abbreviation PSC-ASSEMBLY (see 3.1.101) is used for a power switchgear and
controlgear ASSEMBLY.
This part of IEC 61439 defines the specific requirements of power switchgear and controlgear
assemblies (PSC-ASSEMBLIES) as follows:
– ASSEMBLIES for which the rated voltage does not exceed 1 000 V in case of a.c. or
1 500 V in case of d.c.;
– stationary or movable ASSEMBLIES with or without enclosure;
– ASSEMBLIES intended for use in connection with the generation, transmission,
distribution and conversion of electric energy, and for the control of electric energy
consuming equipment;
– ASSEMBLIES designed for use under special service conditions, for example in ships
and in rail vehicles provided that the other relevant specific requirements are complied
with;
NOTE 2 Supplementary requirements for ASSEMBLIES in ships are covered by IEC 60092-302.
– ASSEMBLIES designed for electrical equipment of machines. Supplementary
requirements for ASSEMBLIES forming part of a machine are covered by the IEC 60204
series.
This standard applies to all ASSEMBLIES whether they are designed, manufactured and verified
on a one-off basis or fully standardised and manufactured in quantity.
The manufacture and/or assembly may be carried out other than by the original manufacturer
(see 3.10.1).
This standard does not apply to individual devices and self-contained components, such as
motor starters, fuse switches, electronic equipment, etc. which will comply with the relevant
product standards.This standard does not apply to the specific types of ASSEMBLIES covered
by other parts of IEC 61439. For ASSEMBLIES not covered by other parts this part applies.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60947-3:2008, Low-voltage switchgear and controlgear – Part 3: Switches, disconnectors,
switch-disconnectors and fuse-combination units
IEC 61140, Protection against electric shock – Common aspects for installation and
equipment
– 6 – 61439-2  IEC:2011
IEC 61439-1:2011, Low-voltage switchgear and controlgear assemblies – Part 1: General
rules
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1 General terms
Additional definitions:
3.1.101
power switchgear and controlgear assembly
PSC-ASSEMBLY
low-voltage switchgear and controlgear assembly used to distribute and control energy for all
types of loads, intended for industrial, commercial and similar applications where operation by
ordinary persons is not intended
NOTE It is not excluded for a PSC-ASSEMBLY to be located in an area accessible to ordinary persons.
3.1.102
test situation
condition of a PSC-ASSEMBLY or part of it in which the relevant main circuits are open on its
supply side but not necessarily isolated whilst the associated auxiliary circuits are connected,
allowing operation tests of the incorporated devices
3.1.103
form of internal separation
classification of physical separation within a PSC-ASSEMBLY
3.2 Constructional units of ASSEMBLIES
Replacement of the title:
3.2 Constructional units of PSC-ASSEMBLIES
Additional definitions:
3.2.101
withdrawable part
removable part intended to be moved from the connected position to the isolated position and
to a test position, if any, whilst remaining mechanically attached to the PSC-ASSEMBLY
3.2.102
test position
position of a withdrawable part in which the relevant main circuits are open on its supply side
but not necessarily isolated and in which the auxiliary circuits are connected allowing
operation tests of the incorporated devices, the withdrawable part remaining mechanically
attached to the PSC-ASSEMBLY
NOTE The opening may also be achieved without any mechanical movement of the withdrawable part by operation
of a suitable device.
___________
To be published.
61439-2  IEC:2011 – 7 –
3.2.103
isolated position
position of a withdrawable part in which an isolating distance is established in main and
auxiliary circuits on its supply side, the withdrawable part remaining mechanically attached to
the PSC-ASSEMBLY
NOTE The isolating distance may also be established without any mechanical movement of the withdrawable part
by operation of a suitable device.
3.2.104
isolating distance (of a withdrawable part)
clearance between open contacts meeting the safety requirements specified for disconnectors
[IEC 60050-441:1984, 441-17-35, modified]
Addition:
3.101 Electrical connections of functional units
3.101.1
disconnectable connection
connection which is connected or disconnected by manual operation of the connecting means
without a tool
3.101.2
withdrawable connection
connection which is connected or disconnected by bringing the functional unit into the
connected or isolated position
3.102 Gangways within PSC-ASSEMBLIES
3.102.1
operating gangway within a PSC-ASSEMBLIES
space to be used by the operator for the proper operation and supervision of the PSC-
ASSEMBLY
3.102.2
maintenance gangway within a PSC-ASSEMBLIES
space which is accessible to authorized personnel only and primarily intended for use when
servicing the installed equipment
4 Symbols and abbreviations
This clause of Part 1 is applicable.
5 Interface characteristics
This clause of Part 1 is applicable except as follows.
5.4 Rated diversity factor (RDF)
Addition:
In the absence of an agreement between the ASSEMBLY manufacturer and user concerning the
actual load currents, the assumed loading of the outgoing circuits of the ASSEMBLY or group of
outgoing circuits may be based on the values in Table 101.

– 8 – 61439-2  IEC:2011
5.6 Other characteristics
Replacement of item l):
l) the type of construction – fixed, removable or withdrawable parts (see 8.5.1 and 8.5.2 of
Part 1);
Addition:
m) the form of internal separation (see 8.101);
n) the types of electrical connections of functional units (see 8.5.101).
6 Information
This clause of Part 1 is applicable except as follows.
6.1 ASSEMBLY designation marking
Replacement of the title and item d):
6.1 PSC-ASSEMBLY designation marking
d) IEC 61439-2;
7 Service conditions
This clause of Part 1 is applicable.
8 Constructional requirements
This clause of Part 1 is applicable except as follows.
8.2 Degree of protection provided by
...