IEC 60947-3:2008/AMD2:2015

Amendment 2 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units

Amendement 2 - Appareillage à basse tension - Partie 3: Interrupteurs, sectionneurs, interrupteurs-sectionneurs et combinés-fusibles

General Information

• Status: Published
• Publication Date: 26-Jul-2015
• ICS: 29.120.40 - Switches
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: SC 121A - Low-voltage switchgear and controlgear
• Drafting Committee: MT 6 - TC 121/SC 121A/MT 6
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 22-Apr-2020

Relations

• Amends: IEC 60947-3:2008 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
• Effective Date: 05-Sep-2023
• Revised: IEC 60947-3:2020 - Low-voltage switchgear and controlgear - Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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
IEC 60947-3:2008-08/AMD2:2015-07(en-fr)

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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 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 2
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