EN 60947-3:2009/A2:2015

Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

Niederspannungsschaltgeräte - Teil 3: Lastschalter, Trennschalter, Lasttrennschalter und Schalter-Sicherungs-Einheiten

Appareillage à basse tension - Partie 3: Interrupteurs, sectionneurs, interrupteurs-sectionneurs et combinés-fusibles

Nizkonapetostne stikalne in krmilne naprave - 3. del: Stikala, ločilniki, ločilna stikala in stikalni aparati z varovalkami - Dopolnilo A2

General Information

• Status: Withdrawn
• Publication Date: 29-Oct-2015
• Withdrawal Date: 30-Aug-2018
• ICS: 29.120.40 - Switches
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: CLC/TC 121A - Low-voltage switchgear and controlgear
• Drafting Committee: IEC/SC 121A - Low-voltage switchgear and controlgear
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 19-Feb-2024
• Completion Date: 19-Feb-2024
• Directive: 2004/108/EC - Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• 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: 2014/30/EU - Directive 2014/30/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 electromagnetic compatibility (recast)
• 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
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Ref Project: SIST EN 60947-3:2009/A2:2016 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

Relations

• Replaced By: EN IEC 60947-3:2021 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
• Effective Date: 23-Feb-2021
• Amends: EN 60947-3:2009 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
• Effective Date: 23-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2016
1L]NRQDSHWRVWQHVWLNDOQHLQNUPLOQHQDSUDYHGHO6WLNDODORþLOQLNLORþLOQD
VWLNDODLQVWLNDOQLDSDUDWL]YDURYDONDPL'RSROQLOR$
Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-
disconnectors and fuse-combination units
Niederspannungsschaltgeräte - Teil 3: Lastschalter, Trennschalter, Lasttrennschalter und
Schalter-Sicherungs-Einheiten
Appareillage à basse tension - Partie 3: Interrupteurs, sectionneurs, interrupteurs-
sectionneurs et combinés-fusibles
Ta slovenski standard je istoveten z: EN 60947-3:2009/A2:2015
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 60947-3:2009/A2

NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2015
ICS 29.120.40; 29.130.20
English Version
Low-voltage switchgear and controlgear - Part 3: Switches,
disconnectors, switch-disconnectors and fuse-combination units
(IEC 60947-3:2008/A2:2015)
Appareillage à basse tension - Partie 3: Interrupteurs, Niederspannungsschaltgeräte - Teil 3: Lastschalter,
sectionneurs, interrupteurs-sectionneurs et combinés- Trennschalter, Lasttrennschalter und Schalter-Sicherungs-
fusibles Einheiten
(IEC 60947-3:2008/A2:2015) (IEC 60947-3:2008/A2:2015)
This amendment A2 modifies the European Standard EN 60947-3:2009; it was approved by CENELEC on 2015-08-31. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60947-3:2009/A2:2015 E

European foreword
The text of document 121A/42/FDIS, future IEC 60947-3:2008/A2, prepared by SC 121A "Low-voltage
switchgear and controlgear" of IEC/TC 121 "Switchgear and controlgear and their assemblies for low
voltage" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2016-05-31
national level by publication of an identical national
standard or by endorsement
(dow) 2018-08-31
• latest date by which the national standards conflicting with
the document have to be withdrawn

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 standard covers the Principle Elements of the Safety Objectives for Electrical Equipment
Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
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(s) see informative Annex ZZ, which is an integral part of this
document.
Endorsement notice
The text of the International Standard IEC 60947-3:2008/A2:2015 was approved by CENELEC as a
European Standard without any modification.
In the Bibliography of EN 60947-3:2009, the following notes have to be added for the standards indicated:
IEC 60364-7-712:2002 NOTE Harmonized as HD 60364-7-712:2005 (not modified).
IEC 60664-1 NOTE Harmonized as EN 60664-1.
Replace Annex ZA by the following:
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 1 When 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.cenelec.eu.

Publication Year Title EN/HD Year
IEC 60050-441 1984 International Electrotechnical Vocabulary - -
(IEV) -
+ A1 2000 - -
Chapter 441: Switchgear, controlgear and
fuses
IEC 60269 series Low-voltage fuses EN 60269 series
HD 60269
CLC/TR 60269
IEC 60410 1973 Sampling plans and procedures for - -
inspection by attributes
IEC 60417-DB 2002 Graphical symbols for use on equipment - -
IEC 60947-1 2007 Low-voltage switchgear and controlgear - EN 60947-1 2007
Part 1: General rules
+ A1 2010 + A1 2011
+ A2 2014 + A2 2014
IEC 60947-2 2006 Low-voltage switchgear and controlgear - EN 60947-2 2006
Part 2: Circuit-breakers
+ A1 2009 + A1 2009
+ A2 2013 + A2 2013
IEC 60947-4-1 2009 Low-voltage switchgear and controlgear - EN 60947-4-1 2010
Part 4-1: Contactors and motor-starters -
+ A1 2012 + A1 2012
Electromechanical contactors and motor-
starters
IEC 60947-5-1 2003 Low-voltage switchgear and controlgear - EN 60947-5-1 2004
Part 5-1: Control circuit devices and
- -  + corrigendum Nov. 2004
switching elements - Electromechanical
- -  control circuit devices + corrigendum Jul. 2005
+ A1 2009 + A1 2009
Publication Year Title EN/HD Year
IEC 61000-4-2 2008 Electromagnetic compatibility (EMC) - EN 61000-4-2 2009
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) - EN 61000-4-3 2006
Part 4-3: Testing and measurement
+ A1 2007 + A1 2008
techniques - Radiated, radio-frequency,
- - electromagnetic field immunity test + IS 2009
+ A2 2010 + A2 2010
IEC 61000-4-4 2012 Electromagnetic compatibility (EMC) - EN 61000-4-4 2012
Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst
immunity test
IEC 61000-4-5 2014 Electromagnetic compatibility (EMC) - EN 61000-4-5 2014
Part 4-5: Testing and measurement
techniques - Surge immunity test
IEC 61000-4-6 2013 Electromagnetic compatibility (EMC) - EN 61000-4-6 2014
Part 4-6: Testing and measurement
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
CISPR 11 (mod) 2009 Industrial, scientific and medical EN 55011 2009
equipment - Radio-frequency disturbance
+ A1 2010 + A1 2010
characteristics - Limits and methods of
measurement
CISPR 22 (mod) 2008 Information technology equipment - Radio EN 55022 2010
disturbance characteristics - Limits and
- -  + AC 2011
methods of measurement
Replace Annex ZZ by the following:
Annex ZZ
(informative)
Coverage of Essential Requirements of EU Directives
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
protection requirements of Annex I Article 1 of the EU Directive 2004/108/EC.
Compliance with this standard provides presumption of conformity with the specified essential
requirements of the Directives concerned.
NOTE: Other requirements and other EU Directives may be applicable to the products falling within the scope of
this standard.
IEC 60947-3 ®
Edition 3.0 2015-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2
Low-voltage switchgear and controlgear –

Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination

units
Appareillage à basse tension –

Partie 3: Interrupteurs, sectionneurs, interrupteurs-sectionneurs et combinés-

fusibles
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.40, 29.130.20 ISBN 978-2-8322-2718-3

– 2 – IEC 60947-3:2008/AMD2:2015
© IEC 2015
FOREWORD
This amendment has been prepared by subcommittee 121A: Low-voltage switchgear and
controlgear, of IEC technical committee 121: Switchgear and controlgear and their assemblies
for low voltage.
The text of this amendment is based on the following documents:
FDIS Report on voting
121A/42/FDIS 121A/46/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
_____________
1 General
1.2 Normative references
Replace the existing subclause by the following new subclause:
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.
IEC 60050-441:1984, International Electrotechnical Vocabulary (IEV) – Chapter 441
Switchgear, controlgear and fuses
IEC 60050-441:1984/AMD1:2000
IEC 60269 (all parts), Low-voltage fuses
IEC 60410:1973, Sampling plans and procedures for inspection by attributes
IEC 60417-DB:2002 , Graphical symbols for use on equipment
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-1:2007/AMD1:2010
IEC 60947-1:2007/AMD2:2014
_____________
“DB” refers to the IEC on-line database.

IEC 60947-3:2008/AMD2:2015 – 3 –
© IEC 2015
IEC 60947-2:2006, Low-voltage switchgear and controlgear – Part 2: Circuit-breakers
IEC 60947-2:2006/AMD1:2009
IEC 60947-2:2006/AMD2:2013
IEC 60947-4-1:2009, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
IEC 60947-4-1:2009/AMD1:2012
IEC 60947-5-1:2003, Low-voltage switchgear and controlgear – Part 5-1: Control circuit
devices and switching elements – Electromechanical control circuit devices
IEC 60947-5-1:2003/AMD1:2009
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
CISPR 11:2009, Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
CISPR 11:2009/AMD1:2010
CISPR 22:2008, Information technology equipment – Radio disturbance characteristics –
Limits and methods of measurement
2 Terms and definitions
Replace the title and text of the existing clause, modified by Amendment 1, by the following
new title and text:
2 Terms, definitions and index of terms
2.1 General
For the purposes of this document, the terms and definitions given in IEC 60050-441 and
IEC 60947-1 as well as the following apply.

– 4 – IEC 60947-3:2008/AMD2:2015
© IEC 2015
2.2 Alphabetical index of terms
Reference
D
Disconnector . 2.3.1
Disconnector-fuse . 2.3.5
Disconnector-fuse single opening . 2.3.5.1
Disconnector-fuse double opening . 2.3.5.2

F
Fuse-combination unit . 2.3.2
Fuse-disconnector . 2.3.6
Fuse-disconnector single opening . 2.3.6.1
Fuse-disconnector double opening . 2.3.6.2
Fuse-switch . 2.3.4
Fuse-switch single opening . 2.3.4.1
Fuse-switch double opening . 2.3.4.2
Fuse-switch-disconnector . 2.3.8
Fuse-switch-disconnector single opening . 2.3.8.1
Fuse-switch-disconnector double opening . 2.3.8.2

S
Semi-independent manual operation . 2.3.10
Single pole operated three pole device . 2.3.9
Switch-disconnector-fuse . 2.3.7
Switch-disconnector-fuse single opening . 2.3.7.1
Switch-disconnector-fuse double opening . 2.3.7.2
Switch-fuse . 2.3.3
Switch-fuse single opening . 2.3.3.1
Switch-fuse double opening . 2.3.3.2

2.3 Terms and definitions
2.3.1
disconnector
mechanical switching device which, in the open position, complies with the requirements
specified for the isolating function
Note 1 to entry: A disconnector is capable of opening and closing a circuit when either a negligible current is
broken or made, or when no significant change in the voltage across the terminals of each of the poles of the
disconnector occurs. It is also capable of carrying currents under normal circuit conditions and carrying, for a
specified time, currents under abnormal conditions such as those of short-circuit.
[SOURCE: IEC 60050-441:1984, 441-14-05, modified – reference to isolating function instead
of isolating distance]
2.3.2
fuse-combination unit
combination of a mechanical switching device and one or more fuses in a composite unit,
assembled by the manufacturer or in accordance with his instructions
[SOURCE: IEC 60050-441:1984, 441-14-04]
2.3.3
switch-fuse
switch in which one or more poles have a fuse in series in a composite unit
[SOURCE: IEC 60050-441:1984, 441-14-14]

IEC 60947-3:2008/AMD2:2015 – 5 –
© IEC 2015
2.3.3.1
switch-fuse single opening
switch-fuse which provides an interruption in the circuit on one side of the fuse-link only
Note 1 to entry: With this arrangement safety precautions may be necessary when removing fuse-links.
2.3.3.2
switch-fuse double opening
switch-fuse which provides an interruption in the circuit on both sides of the fuse-link
Note 1 to entry: With this arrangement safety precautions may be necessary when removing fuse-links.
2.3.4
fuse-switch
switch in which a fuse-link or fuse-carrier with fuse-link forms the moving contact
[SOURCE: IEC 60050-441:1984, 441-14-17]
2.3.4.1
fuse-switch single opening
fuse-switch which provides an interruption in the circuit on one side of the fuse-link only
Note 1 to entry: With this arrangement, safety precautions may be necessary when removing fuse-links.
2.3.4.2
fuse-switch double opening
fuse-switch which provides an interruption in the circuit on both sides of the fuse-link
NOTE 1 to entry: With this arrangement, safety precautions may be necessary when removing fuse-links.
2.3.5
disconnector-fuse
disconnector in which one or more poles have a fuse in series in a composite unit
[SOURCE: IEC 60050-441:1984, 441-14-15]
2.3.5.1
disconnector-fuse single opening
disconnector-fuse which provides an opening in the circuit on at least one side of the fuse-
link, that satisfies the requirements specified for the isolating function
Note 1 to entry: With this arrangement, safety precautions may be necessary when removing fuse-links.
2.3.5.2
disconnector-fuse double opening
disconnector-fuse which provides an opening in the circuit that satisfies the requirements
specified for the isolating function on both sides of the fuse-link
2.3.6
fuse-disconnector
disconnector in which a fuse-link or fuse-carrier with fuse-link forms the moving contact
[SOURCE: IEC 60050-441:1984, 441-14-18]
2.3.6.1
fuse-disconnector single opening
fuse-disconnector which provides an opening in the circuit on at least one side of the fuse-link
that satisfies the requirements specified for the isolating function
Note 1 to entry: With this arrangement, safety precautions may be necessary when removing fuse-links.

– 6 – IEC 60947-3:2008/AMD2:2015
© IEC 2015
2.3.6.2
fuse-disconnector double opening
fuse-disconnector which provides an opening in the circuit, that satisfies the requirements
specified for the isolating function, on both sides of the fuse-link
2.3.7
switch-disconnector-fuse
switch-disconnector in which one or more poles have a fuse in series in a composite unit
[SOURCE: IEC 60050-441:1984, 441-14-16]
2.3.7.1
switch-disconnector-fuse single opening
switch-disconnector-fuse which provides an interruption in the circuit on at least one side of
the fuse-link that satisfies the requirements specified for the isolating function
Note 1 to entry: With this arrangement, safety precautions may be necessary when removing fuse-links.
2.3.7.2
switch-disconnector-fuse double opening
switch-disconnector-fuse which provides an interruption in the circuit on both sides of the
fuse-link that satisfies the requirements specified for the isolating function
2.3.8
fuse-switch-disconnector
switch-disconnector in which a fuse-link or fuse-carrier with fuse-link forms the moving contact
[SOURCE: IEC 60050-441:1984, 441-14-19]
2.3.8.1
fuse-switch-disconnector single opening
fuse-switch-disconnector which provides an interruption in the circuit on at least one side of
the fuse-link that satisfies the requirements specified for the isolating function
Note 1 to entry: With this arrangement, safety precautions may be necessary when removing fuse-links.
2.3.8.2
fuse-switch-disconnector double opening
fuse-switch-disconnector which provides an interruption in the circuit on both sides of the
fuse-link that satisfies the requirements specified for the isolating function
2.3.9
single pole operated three pole device
mechanical unit consisting of three individually operable single pole switches and/or
disconnecting units according to this part, rated as a complete unit for use in a three-phase
system
Note 1 to entry: These mechanical units are intended for power distribution systems where switching and/or
isolation of an individual phase may be necessary and they should not be used for the switching of the primary
circuit of three-phase equipment.
2.3.10
semi-independent manual operation
operation solely by means of directly applied manual energy such that the manual force is
increased up to a threshold value beyond which the independent switching operation is
achieved unless deliberately delayed by the operator
2.4 Summary of the equipment types
A summary of equipment definitions and relevant diagrams is given in Table 1.

IEC 60947-3:2008/AMD2:2015 – 7 –
© IEC 2015
Table 1 – Summary of equipment definitions
Functions
Making and breaking current Isolating Making, breaking and isolating
Switch Disconnector Switch-disconnector

Fuse-combination units
Switch-fuse Disconnector-fuse Switch-disconnector-fuse
a a a
single opening single opening single opening

Switch-fuse Disconnector-fuse
Switch-disconnector-fuse
b
b
double opening double opening
double opening
Fuse-switch Fuse-disconnector Fuse-switch-disconnector
a a a
single opening single opening single opening

Fuse-switch Fuse-disconnector Fuse-switch-disconnector
b b
double opening double opening double opening

NOTE Equipment shown as single opening may comprise multiple openings in series.
a
The fuse may be on either side of the contacts of the equipment.
b
Depending on the design, breaking may take place on one or both sides of the fuse-link.

4.2 Type of equipment
Replace the existing text of this subclause including 4.2.1, 4.2.2, 4.2.3 and changes
introduced in Amendment 1 by the following:
The following information shall be stated:
• number of poles;
• kind of current (a.c. or d.c.);
• in the case of a.c., number of phases and rated frequency;
• number of positions of the main contacts (if more than two);
• breaking arrangement for fused devices (single opening or double opening).
5.2 Marking
Replace the existing item 5.2.2.c) by the following:
c) rated operational currents (or rated powers) with the corresponding rated operational
voltage and utilization category (see 4.3.1, 4.3.2 and 4.4);

– 8 – IEC 60947-3:2008/AMD2:2015
© IEC 2015
Replace the existing item 5.2.2 e) by the following:
e) for fuse-combination units, the fuse characteristics and maximum rated current and the
maximum power loss of the fuse-link;
7.1.2 Materials
Delete the heading "7.1.2 Materials" (and associated text modified by Amendment 1).
Retain "7.1.2.2 Glow wire testing".
7.1.4 Clearance and creepage distances
Delete the existing title and text of 7.1.4 (as modified by Amendment 1).
7.1.7.2 Supplementary requirements for equipment with provision for electrical
interlocking with contactors or circuit breakers
Delete the existing title and text of 7.1.7.2 (as modified by Amendment 1).
7.1.7.3 Supplementary requirements for equipment provided with means for
padlocking the open position
Delete the existing title and text of 7.1.7.3 (as modified by Amendment 1).
7.1.12 Degrees of protection of enclosed equipment
Delete the existing title and text of 7.1.12 (as modified by Amendment 1).
7.3.1 Vacant
Replace the title "7.3.1 Vacant” by the following title and text:
7.3.1 General
Subclause 7.3.1 of IEC 60947-1:2007/AMD1:2010 applies.
8.2.5.2 Method of test
Delete the existing title and text of 8.2.5.2 (as modified by Amendment 1).
8.2.5.3 Condition of equipment during and after test
Delete the existing title and text of 8.2.5.3 (as modified by Amendment 1, except Table 9).
8.3.3.1 Temperature rise
Replace the second existing paragraph modified by Amendment 1, starting by "The test shall
be carried out … ", by the following:
As a minimum the test shall be carried out at the rated operational current I . At the
e
manufacturer’s discretion, when I and/or I are higher than I , the higher value may be
th the e
used. In the case of an AC-20 or DC-20 rating, the temperature rise test shall be carried out
at I , or I if the device is in a specified enclosure.
th the
8.3.3.5 Leakage current
Replace the second sentence of the first paragraph by the following:
The leakage current shall be checked across the contact gaps as follows:

IEC 60947-3:2008/AMD2:2015 – 9 –
© IEC 2015
a) disconnector and switch-disconnector: between load and line terminals;
b) disconnector-fuse, switch-disconnector-fuse, fuse-disconnector and fuse-switch-
disconnector single opening: between load and line terminals;
c) disconnector-fuse, switch-disconnector-fuse, fuse-disconnector and fuse-switch-
disconnector double opening: (i) between line terminals and the fuse-links; (ii) between
load terminals and the fuse-links; and (iii) between load and line terminals.
Add, after the existing Annex C, the following new Annex D:

– 10 – IEC 60947-3:2008/AMD2:2015
© IEC 2015
Annex D
(normative)
Switches, disconnectors, switch-disconnectors and fuse-combination
units for use in photovoltaic (PV) d.c. applications
D.1 General
As part of the answer to the challenge of sustainable development, the number of photovoltaic
(PV) installations is increasing. This latest development in photovoltaic (PV) technology is
challenging the
...