IEC 60947-2:2006

IEC 60947-2 ®
Edition 4.1 2009-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear –
Part 2: Circuit-breakers
Appareillage à basse tension –
Partie 2: Disjoncteurs
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IEC 60947-2 ®
Edition 4.1 2009-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear –
Part 2: Circuit-breakers
Appareillage à basse tension –
Partie 2: Disjoncteurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CU
CODE PRIX
ICS 29.130.20 ISBN 978-2-88910-337-9
– 2 – 60947-2 © IEC:2006+A1:2009
CONTENTS
FOREWORD.7
1 General .9
1.1 Scope and object.9
1.2 Normative references .10
2 Definitions .12
3 Classification .16
4 Characteristics of circuit-breakers.16
4.1 Summary of characteristics.16
4.2 Type of circuit-breaker.17
4.3 Rated and limiting values of the main circuit.17
4.4 Selectivity categories .21
4.5 Control circuits .21
4.6 Auxiliary circuits .22
4.7 Releases .22
4.8 Integral fuses (integrally fused circuit-breakers) .23
5 Product information.23
5.1 Nature of the information .23
5.2 Marking .24
5.3 Instructions for installation, operation and maintenance.25
6 Normal service, mounting and transport conditions.25
7 Constructional and performance requirements .25
7.1 Constructional requirements .25
7.2 Performance requirements.27
7.3 Electromagnetic compatibility (EMC) .33
8 Tests .33
8.1 Kind of tests .33
8.2 Compliance with constructional requirements.33
8.3 Type tests .33
8.4 Routine tests .64

Annex A (normative)  Co-ordination under short-circuit conditions between a circuit-
breaker and another short-circuit protective device associated in the same circuit.69
Annex B (normative)  Circuit-breakers incorporating residual current protection .78
Annex C (normative)  Individual pole short-circuit test sequence. 110
Annex D Vacant . 111
Annex E (informative)  Items subject to agreement between manufacturer and user. 112
Annex F (normative)  Additional tests for circuit-breakers with electronic over-current
protection. 113
Annex G (normative)  Power loss .143
Annex H (normative)  Test sequence for circuit-breakers for IT systems . 146
Annex J (normative)  Electromagnetic compatibility (EMC) – Requirements and test
methods for circuit-breakers. 148
Annex K (informative)  Glossary of symbols and graphical representation
of characteristics. 161

60947-2 © IEC:2006+A1:2009 – 3 –
Annex L (normative)  Circuit-breakers not fulfilling the requirements for overcurrent
protection. 170
Annex M (normative)  Modular residual current devices (without integral current
breaking device). 175
Annex N (normative)  Electromagnetic compatibility (EMC) – Additional requirements
and test methods for devices not covered by Annexes B, F and M . 219
Annex O  Instantaneous trip circuit-breakers (ICB) . 223

Bibliography . 226

Figure 1 – Test arrangement (connecting cables not shown) for short-circuit tests .68
Figure A.1 – Over-current co-ordination between a circuit-breaker and a fuse or back-up
protection by a fuse: operating characteristics .74
Figure A.2 Figure A.3.75
Total discrimination between two circuit-breakers .75
Figure A.4 Figure A.5.76
Back-up protection by a circuit-breaker – Operating characteristics.76
Figure A.6 – Example of test circuit for conditional short-circuit breaking capacity tests
showing cable connections for a 3-pole circuit-breaker (C ) .77
Figure B.1 – Test circuit for the verification of the operating characteristic (see B.8.2) . 102
Figure B.2 – Test circuit for the verification of the limiting value of the non-operating

current under over-current conditions (see B.8.5) . 103
Figure B.3 – Test circuit for the verification of the behaviour of CBRs classified under
B.3.1.2.2 (see B.8.9) . 104
Figure B.4 – Current ring wave 0,5 μs/100 kHz . 105
Figure B.5 – Example of test circuit for the verification of resistance to unwanted
tripping . 106
Figure B.6 – Surge current wave 8/20 μs . 106
Figure B.7 – Test circuit for the verification of resistance to unwanted tripping in case of
flashover without follow-on current (B.8.6.2) . 107
Figure B.8 – Test circuit for the verification of the correct operation of CBRs, in the case
of residual pulsating direct currents (see B.8.7.2.1, B.8.7.2.2 and B.8.7.2.3) . 108
Figure B.9 – Test circuit for the verification of the correct operation of CBRs, in the case
of a residual pulsating direct current superimposed by a smooth direct residual current
(see B.8.7.2.4) . 109
Figure F.1 – Representation of test current produced by back-to-back thyristors in
accordance with F.4.1 . 122
Figure F.2 – Test circuit for immunity and emission tests in accordance with F.4.1.3,
F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.2 – Two phase poles in series. 123
Figure F.3 – Test circuit for immunity and emission tests in accordance with F.4.1.3,
F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.2 – Three phase poles in series . 124
Figure F.4 – Test circuit for immunity and emission tests in accordance with F.4.1.3,
F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.2 – Three-phase connection . 125
Figure F.5 – Test current for the verification of the influence of the current dips and
interruptions in accordance with F.4.7.1. 126
Figure F.6 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in
accordance with F.4.4 – Two phase poles in series. 127
Figure F.7 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in
accordance with F.4.4 – Three phase poles in series . 128

– 4 – 60947-2 © IEC:2006+A1:2009
Figure F.8 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in
accordance with F.4.4 – Three-phase connection . 129
Figure F.9 – Test circuit for the verification of the influence of surges in the main circuit
(line-to-earth) in accordance with F.4.5 – Two phase poles in series . 130
Figure F.10 – Test circuit for the verification of the influence of surges in the main
circuit (line-to-earth) in accordance with F.4.5 – Three phase poles in series . 131
Figure F.11 – Test circuit for the verification of the influence of surges in the main
circuit (line-to-earth) in accordance with F.4.5 – Three-phase connection. 132
Figure F.12 – Test circuit for the verification of the influence of current surges in the
main circuit in accordance with F.4.5 – Two phase poles in series . 133
Figure F.13 – Test circuit for the verification of the influence of current surges in the
main circuit in accordance with F.4.5 – Three phase poles in series. 133
Figure F.14 – Test circuit for the verification of the influence of current surges in the
main circuit in accordance with F.4.5 – Three-phase connection . 134
Figure F.15 – Temperature variation cycles at a specified rate of change in accordance
with F.9.1. 134
Figure F.16 – General test set up for immunity tests . 135
Figure F.17 – Test set up for the verification of immunity to radiated r.f. electromagnetic
fields. 136
Figure F.18 – Test set up for the verification of immunity to electrical fast
transients/bursts (EFT/B) on power lines . 137
Figure F.19 – Test set up for verification of immunity to electrical fast transients/bursts
(EFT/B) on signal lines.138
Figure F.20 – General test set-up for the verification of immunity to conducted
disturbances induced by r.f. fields (common mode) . 139
Figure F.21 – Arrangement of connections for the verification of immunity to conducted
disturbances induced by r.f. fields - Two phase poles in series configuration. 140
Figure F.22 – Arrangement of connections for the verification of immunity to conducted
disturbances induced by r.f. fields - Three phase poles in series configuration . 141
Figure F.23 – Arrangement of connections for the verification of immunity to conducted
disturbances induced by r.f. fields – Three-phase configuration . 142
Figure G.1 – Example of power loss measurement according to G.2.1 . 145
Figure G.2 – Example of power loss measurement according to G.2.2 and G.2.3 . 145
Figure J.1 – EUT mounted in a metallic enclosure . 155
Figure J.2 – Test set up for the measurement of radiated r.f. emissions. 156
Figure J.3 – Test set up for the verification of immunity to electrostatic discharges . 157
Figure J.4 – Test set up for the verification of immunity to radiated r.f. electromagnetic
fields. 158
Figure J.5 – Test set up for the verification of immunity to electrical fast
transients/bursts (EFT/B) on power lines . 159
Figure J.6 – Test set up for the verification of immunity to electrical fast
transients/bursts (EFT/B) on signal lines . 160
Figure K.1 – Relationship between symbols and tripping characteristics. 163
Figure K.2 – Template for characteristics of cut-off current versus prospective current
from 1 kA to 200 kA . 164
Figure K.3 – Template for characteristics of cut-off current versus prospective current
from 0,01 kA to 200 kA.165
Figure K.4 – Template for characteristics of let-through energy versus prospective
current from 1 kA to 200 kA.166

60947-2 © IEC:2006+A1:2009 – 5 –
Figure K.5 – Template for characteristics of let-through energy versus prospective
current from 0,01 kA to 200 kA.167
Figure K.6 – Example of the use of template K.2 . 168
Figure K.7 – Example of the use of template K.4 . 169
Figure M.1 – Test circuits for the verification of operation in the case of a steady
increase of residual current . 198
Figure M.2 – Test circuits for the verification of operation in the case of a sudden
appearance of residual current (with breaking device) . 199
Figure M.3 – Test circuits for the verification of operation in the case of a sudden
appearance of residual current (without breaking device). 200
Figure M.4 – Test circuits for the verification of the limiting value of non-operating
current under overcurrent conditions . 201
Figure M.5 – Test circuits for the verification of the resistance to unwanted tripping in
the case of loading of the network capacitance. 202
Figure M.6 – Test circuit for the verification of the resistance to unwanted tripping in the
case of flashover without follow-on current . 203
Figure M.7 – Test circuits for the verification of operation in the case of a continuous
rise of a residual pulsating direct current . 204
Figure M.8 – Test circuits for the verification of operation in the case of a sudden
appearance of residual pulsating direct current (without breaking device) . 205
Figure M.9 – Test circuits for the verification of operation in the case of a sudden
appearance of residual pulsating direct current (with breaking device) . 206
Figure M.10 – Test circuits for the verification of operation in the case of a residual

pulsating direct current superimposed by smooth direct current of 6 mA . 207
Figure M.11 – Test circuits for the verification of operation in the case of a slowly rising
residual smooth direct current . 208
Figure M.12 – Test circuits for the verification of operation in the case of a sudden
appearance of residual smooth direct current (without breaking device) . 209
Figure M.13 – Test circuits for the verification of operation in the case of a sudden
appearance of residual smooth direct current (with breaking device). 210
Figure M.14 – Test circuits for the verification of operation in the case of a slowly rising
residual current resulting from a fault in a circuit fed by a three-pulse star or a six-pulse
bridge connection. 211
Figure M.15 – Test circuits for the verification of operation in the case of a slowly rising
residual current resulting from a fault in a circuit fed by a two-pulse bridge connection
line-to-line.
Figure M.16 – Test circuit for the verification of the behaviour of MRCDs with separate
sensing means in the case of a failure of the sensor means connection . 213
Figure M.17 − Test circuit for the verification of the behaviour of MRCD with separate
sensing means under short-circuit conditions . 214
Figure M.18 − Test circuit for the verification of the behaviour of MRCD with integral
sensing means under short-circuit conditions . 215
Figure M.19 − Test circuit for the verification of the behaviour of terminal type MRCD
under short-circuit conditions.216
Figure M.20 – Verification of immunity to radiated r.f. electromagnetic fields – Test set-
up for MRCD with separate sensing means (additional to the test of Annex B) . 217
Figure M.21 – Verification of immunity to electrical fast transients/bursts (EFT/B) on the
sensing means connection of an MRCD with separate sensing means (additional to the
test of Annex B) . 218
Figure M.22 – Verification of immunity to conducted disturbances induced by r.f. fields –
Test set up for MRCD with separate sensing means (additional to the test of Annex B) . 218

– 6 – 60947-2 © IEC:2006+A1:2009

Table 1 – Standard ratios between I and I .20
cs cu
Table 2 – Ratio n between short-circuit making capacity and short-circuit breaking
capacity and related power factor (for a.c. circuit-breakers) .20
Table 3 – Minimum values of rated short-time withstand current .21
Table 4 – Selectivity categories .21
Table 5 – Preferred values of the rated control supply voltage, if different from that of
the main circuit .22
Table 6 – Characteristics of the opening operation of inverse time-delay over-current
opening releases at the reference temperature.29
Table 7 – Temperature-rise limits for terminals and accessible parts .30
Table 8 – Number of operating cycles.32
a
Table 9 – Overall schema of test sequences .36
Table 9a – Applicability of test sequences according to the relationship between I , I
cs cu
and I .37
cw
Table 9b – Applicability of tests or test sequences to four-pole circuit-breakers in a
given frame size and design when tested according to the alternative programme 1

of 8.3.1.4 .38
Table 9c – Applicability of tests or test sequences to 3-pole circuit-breakers in a given
frame size and design when tested according to the alternative programme 2 of 8.3.1.4 .40
Table 10 – Number of samples for test .43
Table 11 – Values of power factors and time constants corresponding to test currents.45
Table 12 – Test circuit characteristics for overload performance .56
Table B.1 – Operating characteristic for non-time-delay type.83
Table B.2 – Operating characteristic for time-delay-type having a limiting non-actuating
time of 0,06 s .84
Table B.3 – Requirements for CBRs functionally dependent on line voltage .88
Table B.4 – Additional test sequences .91
Table B.5 – Tripping current range for CBRs in case of an earth fault comprising a d.c.
component.96
Table F.1 – Test parameters for current dips and interruptions . 118
Table J.1 − EMC − Immunity tests . 150
Table J.2 – Reference data for immunity test specifications . 151
Table J.3 − EMC − Emission tests . 154
Table J.4 – Reference data for emission test specifications . 154
Table M.1 – Product information.181
Table M.2 – Requirements for MRCDs with voltage source . 183
Table M.3 – Test sequences . 185

60947-2 © IEC:2006+A1:2009 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 2: Circuit-breakers
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
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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
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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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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 60947-2 has been prepared by subcommittee 17B: Low-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
The main changes introduced in this new edition are an amendment to the verification of
dielectric properties, the improvement of EMC clauses in Annexes B, F, J and M, and the
addition of a new Annex O regarding instantaneous trip circuit-breakers.
This consolidated version of IEC 60947-2 consists of the fourth edition (2006) [documents
17B/1455/FDIS and 17B/1463/RVD] and its amendment 1 (2009) [documents 17B/1636/FDIS
and 17B/1651/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 4.1.

– 8 – 60947-2 © IEC:2006+A1:2009
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The IEC 60947 series comprises the following parts under the general title Low-voltage
switchgear and controlgear:
Part 1: General rules
Part 2: Circuit-breakers
Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
Part 4: Contactors and motor-starters
Part 5: Control circuit devices and switching elements
Part 6: Multiple function equipment
Part 7: Ancillary equipment
Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the maintenance result 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.
60947-2 © IEC:2006+A1:2009 – 9 –
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 2: Circuit-breakers
1 General
The provisions of the general rules dealt with in IEC 60947-1 are applicable to this standard,
where specifically called for. Clauses and subclauses, tables, figures and annexes of the
general rules thus applicable are identified by reference to IEC 60947-1, for example, 1.2.3 of
IEC 60947-1, Table 4 of IEC 60947-1, or Annex A of IEC 60947-1.
1.1 Scope and object
This standard applies to circuit-breakers, the main contacts of which are intended to be
connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.;
it also contains additional requirements for integrally fused circuit-breakers.
It applies whatever the rated currents, the method of construction or the proposed applications
of the circuit-breakers may be.
The requirements for circuit-breakers which are also intended to provide earth-leakage
protection are contained in Annex B.
The additional requirements for circuit-breakers with electronic over-current protection are
contained in Annex F.
The additional requirements for circuit-breakers for IT systems are contained in Annex H.
The requirements and test methods for electromagnetic compatibility of circuit-breakers are
contained in Annex J.
The requirements for circuit-breakers not fulfilling the requirements for over-current protection
are contained in Annex L.
The requirements for modular residual current devices (without integral current breaking
device) are contained in Annex M.
The requirements and test methods for electromagnetic compatibility of circuit-breaker
auxiliaries are contained in Annex N.
Supplementary requirements for circuit-breakers used as direct-on-line starters are given in
IEC 60947-4-1, applicable to low-voltage contactors and starters.
The requirements for circuit-breakers for the protection of wiring installations in buildings and
similar applications, and designed for use by uninstructed persons, are contained in
IEC 60898.
The requirements for circuit-breakers for equipment (for example electrical appliances) are
contained in IEC 60934.
– 10 – 60947-2 © IEC:2006+A1:2009
For certain specific applications (for example traction, rolling mills, marine service) particular or
additional requirements may be necessary.
NOTE Circuit-breakers which are dealt with in this standard may be provided with devices for automatic opening
under predetermined conditions other than those of over-current and undervoltage as, for example, reversal of
power or current. This standard does not deal with the verification of operation under such pre-determined
conditions.
The object of this standard is to state:
a) the characteristics of circuit-breakers;
b) the conditions with which circuit-breakers shall comply with reference to:
1) operation and behaviour in normal service;
2) operation and behaviour in case of overload and operation and behaviour in case of
short-circuit, including co-ordination in service (discrimination and back-up protection);
3) dielectric properties;
c) tests intended for confirming that these conditions have been met and the methods to be
adopted for these tests;
d) information to be marked on or given with the apparatus.
1.2 Normative references
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
Amendment 1 (2000)
IEC 60051 (all parts) Direct acting indicating analogue electrical measuring instruments and
their accessories
IEC 60068-2-14:1984, Environmental testing – Part 2: Tests. Test N: Change of temperature
Amendment 1 (1986)
IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
IEC 60364 ( all parts), Electric installations of buildings

IEC 60417, Graphical symbols for use on equipment
IEC 60617, Graphical symbols for diagrams
IEC 60695-2-10:2000, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products
IEC 60695-2-12:2000, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability test method for materials
IEC 60695-2-13:2000, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods –
Glow-wire ignitability test method for materials
IEC/TR 60755:1983, General requirements for residual current operated protective devices
Amendment 1 (1988)
Amendment 2 (1992)
60947-2 © IEC:2006+A1:2009 – 11 –
IEC 60898, Circuit-breakers for over-current protection for household and similar installations
IEC 60934, Circuit-breakers for equipment (CBE)
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-4-1:2000, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
Amendment 1 (2002)
Amendment 2 (2005)
IEC 61000-3-2:2005, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for
harmonic current emissions (equipment input current ≤ 16 A per phase)
IEC 61000-3-3:1994, Electromagnetic compatibility (EMC) – Part 3: Limits – Section 3:
Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with
rated current ≤16 A
Amendment 1 (2001)
Amendment 2 (2005)
IEC 61000-4-2:1995, Electromagnetic compatibility(EMC) – Part 4: Testing and measurement
techniques – Section 2: Electrostatic discharge immunity test
Amendment 1 (1998)
Amendment 2 (2000)
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2003, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radiofrequency
fields
Amendment 1 (2004)
Amendment 2 (2006)
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
IEC 61000-4-13:2002, Electromagnetic compatibility (EMC) – Part 4-13: Testing and
measurement techniques – Harmonics and interharmonics including mains signalling at a.c.
power port, low frequency immunity tests
IEC/TR 61000-5-2:1997, Electromagnetic compatibility (EMC) – Part 5: Installation and
mitigation guidelines – Section 2: Earthing and cabling
IEC 61008-1:1996, Residual current operated circuit-breakers without integral over-current
protection for household and similar uses (RCCBs) – Part 1: General rules
Amendment 1 (2002)
Amendment 2 (2006)
IEC 61009-1:1996, Residual current operated circuit-breakers with integral over-current
protection for household and similar uses (RCBOs) – Part 1: General rules
Amendment 1 (2002)
Amendment 2 (2006)
IEC 61131-1:2003, Programmable controllers – Part 1: General information

– 12 – 60947-2 © IEC:2006+A1:2009
CISPR 11:2003, Industrial, scientific and medical (ISM) radio-frequency equipment –
Electromagnetic disturbance characteristics – Limits and methods of measurement
Amendment 1 (2004)
Amendment 2 (2006)
CISPR 22:2005, Information technology equipment – Radio disturbance characteristics – Limits
and methods of measurement
Amendment 1 (2005)
Amendment 2 (2006)
2 Definitions
For the majority of the definitions required in connection with this standard, see Clause 2 of
IEC 60947-1.
For the purpose of this standard, the following additional definitions shall apply:
NOTE Where these definitions are taken unchanged from the International Electrotechnical Vocabulary (IEV),
IEC 60050(441), the IEV reference is given in brackets.
2.1
circuit-breaker
a mechanical switching device, capable of making, carrying and breaking currents under
normal circuit conditions and also making, carrying for a specified time and breaking currents
under specified abnormal circuit conditions such as those of short-circuit
[IEV 441-14-20]
2.1.1
frame size
a term designating a group of circuit-breakers, the external physical dimensions of which are
common
...

IEC 60947-2 ®
Edition 4.2 2013-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Low-voltage switchgear and controlgear –
Part 2: Circuit-breakers
Appareillage à basse tension –
Partie 2: Disjoncteurs
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IEC 60947-2 ®
Edition 4.2 2013-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Low-voltage switchgear and controlgear –

Part 2: Circuit-breakers
Appareillage à basse tension –

Partie 2: Disjoncteurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.130.20 ISBN 978-2-8322-0636-2

– 2 – 60947-2  IEC:2006+A1:2009+A2:2013
CONTENTS
FOREWORD . 7
1 General . 9
1.1 Scope and object . 9
1.2 Normative references . 10
2 Definitions . 12
3 Classification . 16
4 Characteristics of circuit-breakers . 17
4.1 Summary of characteristics . 17
4.2 Type of circuit-breaker . 17
4.3 Rated and limiting values of the main circuit . 17
4.4 Selectivity categories . 20
4.5 Control circuits . 21
4.6 Auxiliary circuits . 21
4.7 Releases . 22
4.8 Integral fuses (integrally fused circuit-breakers) . 23
5 Product information. 23
5.1 Nature of the information . 23
5.2 Marking . 23
5.3 Instructions for installation, operation and maintenance . 25
6 Normal service, mounting and transport conditions . 25
7 Constructional and performance requirements . 25
7.1 Constructional requirements . 25
7.2 Performance requirements . 27
7.3 Electromagnetic compatibility (EMC) . 33
8 Tests . 33
8.1 Kind of tests . 33
8.2 Compliance with constructional requirements . 33
8.3 Type tests . 33
8.4 Routine tests . 65

Annex A (normative)  Co-ordination under short-circuit conditions between a circuit-
breaker and another short-circuit protective device associated in the same circuit . 70
Annex B (normative)  Circuit-breakers incorporating residual current protection . 81
Annex C (normative)  Individual pole short-circuit test sequence . 113
Annex D Vacant . 114
Annex E (informative)  Items subject to agreement between manufacturer and user. 115
Annex F (normative)  Additional tests for circuit-breakers with electronic over-current
protection . 116
Annex G (normative)  Power loss . 146
Annex H (normative)  Test sequence for circuit-breakers for IT systems . 149
Annex J (normative)  Electromagnetic compatibility (EMC) – Requirements and test

methods for circuit-breakers . 151
Annex K (informative)  Glossary of symbols and graphical representation
of characteristics . 164

60947-2  IEC:2006+A1:2009+A2:2013 – 3 –
Annex L (normative)  Circuit-breakers not fulfilling the requirements for overcurrent
protection . 173
Annex M (normative)  Modular residual current devices (without integral current
breaking device). 178
Annex N (normative)  Electromagnetic compatibility (EMC) – Additional requirements
and test methods for devices not covered by Annexes B, F and M . 222
Annex O  Instantaneous trip circuit-breakers (ICB) . 226

Bibliography . 229

Figure 1 – Test arrangement (connecting cables not shown) for short-circuit tests . 69
Figure A.1 – Over-current co-ordination between a circuit-breaker and a fuse or back-up
protection by a fuse: operating characteristics . 76
Figure A.2 Figure A.3 . 77
Total selectivity between two circuit-breakers . 77
Figure A.4 Figure A.5 . 78
Back-up protection by a circuit-breaker – Operating characteristics. 78
Figure A.6 – Example of test circuit for conditional short-circuit breaking capacity tests
showing cable connections for a 3-pole circuit-breaker (C ) . 79
Figure A.7 – Example of test circuit for the verification of selectivity . 80
Figure B.1 – Test circuit for the verification of the operating characteristic (see B.8.2) . 105
Figure B.2 – Test circuit for the verification of the limiting value of the non-operating
current under over-current conditions (see B.8.5) . 106
Figure B.3 – Test circuit for the verification of the behaviour of CBRs classified under
B.3.1.2.2 (see B.8.9) . 107
Figure B.4 – Current ring wave 0,5 µs/100 kHz . 108
Figure B.5 – Example of test circuit for the verification of resistance to unwanted
tripping . 109
Figure B.6 – Surge current wave 8/20 µs . 109
Figure B.7 – Test circuit for the verification of resistance to unwanted tripping in case of
flashover without follow-on current (B.8.6.2) . 110
Figure B.8 – Test circuit for the verification of the correct operation of CBRs, in the case
of residual pulsating direct currents (see B.8.7.2.1, B.8.7.2.2 and B.8.7.2.3) . 111
Figure B.9 – Test circuit for the verification of the correct operation of CBRs, in the case
of a residual pulsating direct current superimposed by a smooth direct residual current
(see B.8.7.2.4) . 112
Figure F.1 – Representation of test current produced by back-to-back thyristors in
accordance with F.4.1 . 125
Figure F.2 – Test circuit for immunity and emission tests in accordance with F.4.1.3,

F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.2 – Two phase poles in series. 126
Figure F.3 – Test circuit for immunity and emission tests in accordance with F.4.1.3,
F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.2 – Three phase poles in series . 127
Figure F.4 – Test circuit for immunity and emission tests in accordance with F.4.1.3,
F.4.2, F.4.3, F.4.6, F.4.7.1, F.5.4 and F.6.2 – Three-phase connection . 128
Figure F.5 – Test current for the verification of the influence of the current dips and
interruptions in accordance with F.4.7.1 . 129
Figure F.6 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in
accordance with F.4.4 – Two phase poles in series. 130

– 4 – 60947-2  IEC:2006+A1:2009+A2:2013
Figure F.7 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in
accordance with F.4.4 – Three phase poles in series . 131
Figure F.8 – Circuit for electrical fast transients/bursts (EFT/B) immunity test in
accordance with F.4.4 – Three-phase connection . 132
Figure F.9 – Test circuit for the verification of the influence of surges in the main circuit
(line-to-earth) in accordance with F.4.5 – Two phase poles in series . 133
Figure F.10 – Test circuit for the verification of the influence of surges in the main
circuit (line-to-earth) in accordance with F.4.5 – Three phase poles in series . 134
Figure F.11 – Test circuit for the verification of the influence of surges in the main
circuit (line-to-earth) in accordance with F.4.5 – Three-phase connection . 135
Figure F.12 – Test circuit for the verification of the influence of current surges in the
main circuit in accordance with F.4.5 – Two phase poles in series . 136
Figure F.13 – Test circuit for the verification of the influence of current surges in the
main circuit in accordance with F.4.5 – Three phase poles in series . 136
Figure F.14 – Test circuit for the verification of the influence of current surges in the
main circuit in accordance with F.4.5 – Three-phase connection . 137
Figure F.15 – Temperature variation cycles at a specified rate of change in accordance
with F.9.1 . 137
Figure F.16 – General test set up for immunity tests . 138
Figure F.17 – Test set up for the verification of immunity to radiated r.f. electromagnetic
fields . 139
Figure F.18 – Test set up for the verification of immunity to electrical fast
transients/bursts (EFT/B) on power lines . 140
Figure F.19 – Test set up for verification of immunity to electrical fast transients/bursts
(EFT/B) on signal lines . 141
Figure F.20 – General test set-up for the verification of immunity to conducted
disturbances induced by r.f. fields (common mode) . 142
Figure F.21 – Arrangement of connections for the verification of immunity to conducted
disturbances induced by r.f. fields - Two phase poles in series configuration . 143
Figure F.22 – Arrangement of connections for the verification of immunity to conducted
disturbances induced by r.f. fields - Three phase poles in series configuration . 144
Figure F.23 – Arrangement of connections for the verification of immunity to conducted
disturbances induced by r.f. fields – Three-phase configuration . 145
Figure G.1 – Example of power loss measurement according to G.2.1 . 148
Figure G.2 – Example of power loss measurement according to G.2.2 and G.2.3 . 148
Figure J.1 – EUT mounted in a metallic enclosure . 158
Figure J.2 – Test set up for the measurement of radiated r.f. emissions . 159
Figure J.3 – Test set up for the verification of immunity to electrostatic discharges . 160
Figure J.4 – Test set up for the verification of immunity to radiated r.f. electromagnetic
fields . 161
Figure J.5 – Test set up for the verification of immunity to electrical fast
transients/bursts (EFT/B) on power lines . 162
Figure J.6 – Test set up for the verification of immunity to electrical fast
transients/bursts (EFT/B) on signal lines . 163
Figure K.1 – Relationship between symbols and tripping characteristics . 166
Figure K.2 – Template for characteristics of cut-off current versus prospective current
from 1 kA to 200 kA . 167
Figure K.3 – Template for characteristics of cut-off current versus prospective current
from 0,01 kA to 200 kA . 168

60947-2  IEC:2006+A1:2009+A2:2013 – 5 –
Figure K.4 – Template for characteristics of let-through energy versus prospective
current from 1 kA to 200 kA . 169
Figure K.5 – Template for characteristics of let-through energy versus prospective
current from 0,01 kA to 200 kA . 170
Figure K.6 – Example of the use of template K.2 . 171
Figure K.7 – Example of the use of template K.4 . 172
Figure M.1 – Test circuits for the verification of operation in the case of a steady
increase of residual current . 201
Figure M.2 – Test circuits for the verification of operation in the case of a sudden
appearance of residual current (with breaking device) . 202
Figure M.3 – Test circuits for the verification of operation in the case of a sudden
appearance of residual current (without breaking device) . 203
Figure M.4 – Test circuits for the verification of the limiting value of non-operating
current under overcurrent conditions . 204
Figure M.5 – Test circuits for the verification of the resistance to unwanted tripping in
the case of loading of the network capacitance . 205
Figure M.6 – Test circuit for the verification of the resistance to unwanted tripping in the
case of flashover without follow-on current . 206
Figure M.7 – Test circuits for the verification of operation in the case of a continuous
rise of a residual pulsating direct current . 207
Figure M.8 – Test circuits for the verification of operation in the case of a sudden
appearance of residual pulsating direct current (without breaking device) . 208
Figure M.9 – Test circuits for the verification of operation in the case of a sudden
appearance of residual pulsating direct current (with breaking device) . 209
Figure M.10 – Test circuits for the verification of operation in the case of a residual
pulsating direct current superimposed by smooth direct current of 6 mA . 210
Figure M.11 – Test circuits for the verification of operation in the case of a slowly rising
residual smooth direct current . 211
Figure M.12 – Test circuits for the verification of operation in the case of a sudden
appearance of residual smooth direct current (without breaking device) . 212
Figure M.13 – Test circuits for the verification of operation in the case of a sudden
appearance of residual smooth direct current (with breaking device) . 213
Figure M.14 – Test circuits for the verification of operation in the case of a slowly rising
residual current resulting from a fault in a circuit fed by a three-pulse star or a six-pulse
bridge connection . 214
Figure M.15 – Test circuits for the verification of operation in the case of a slowly rising
residual current resulting from a fault in a circuit fed by a two-pulse bridge connection
line-to-line . 215
Figure M.16 – Test circuit for the verification of the behaviour of MRCDs with separate
sensing means in the case of a failure of the sensor means connection . 216
Figure M.17 − Test circuit for the verification of the behaviour of MRCD with separate
sensing means under short-circuit conditions . 217
Figure M.18 − Test circuit for the verification of the behaviour of MRCD with integral
sensing means under short-circuit conditions . 218
Figure M.19 − Test circuit for the verification of the behaviour of terminal type MRCD
under short-circuit conditions. 219
Figure M.20 – Verification of immunity to radiated r.f. electromagnetic fields – Test set-
up for MRCD with separate sensing means (additional to the test of Annex B) . 220
Figure M.21 – Verification of immunity to electrical fast transients/bursts (EFT/B) on the
sensing means connection of an MRCD with separate sensing means (additional to the
test of Annex B) . 221

– 6 – 60947-2  IEC:2006+A1:2009+A2:2013
Figure M.22 – Verification of immunity to conducted disturbances induced by r.f. fields –
Test set up for MRCD with separate sensing means (additional to the test of Annex B) . 221

Table 1 (void) . 19
Table 2 – Ratio n between short-circuit making capacity and short-circuit breaking
capacity and related power factor (for a.c. circuit-breakers) . 20
Table 3 – Minimum values of rated short-time withstand current . 20
Table 4 – Selectivity categories . 21
Table 5 – Preferred values of the rated control supply voltage, if different from that of
the main circuit . 21
Table 6 – Characteristics of the opening operation of inverse time-delay over-current
opening releases at the reference temperature . 29
Table 7 – Temperature-rise limits for terminals and accessible parts . 30
Table 8 – Number of operating cycles . 32
Alphabetical index of tests . 35
a
Table 9 – Overall schema of test sequences . 36
Table 9a – Applicability of test sequences according to the relationship between I , I
cs cu
a
and I . 37
cw
2 Table 9b – Applicability of tests or test sequences to 1, 2 and 4-pole circuit-breakers
according to the alternative programme 1 of 8.3.1.4 . 39
Table 9c – Applicability of tests or test sequences to 1, 2 and 3-pole circuit-breakers
according to the alternative programme 2 of 8.3.1.4 . 41
Table 10 – Number of samples for test . 44
Table 11 – Values of power factors and time constants corresponding to test currents . 46
Table 12 – Test circuit characteristics for overload performance . 57
Table B.1 – Operating characteristic for non-time-delay type . 86
Table B.2 – Operating characteristic for time-delay-type having a limiting non-actuating
time of 0,06 s . 87
Table B.3 – Requirements for CBRs functionally dependent on line voltage . 91
Table B.4 – Additional test sequences . 94
Table B.5 – Tripping current range for CBRs in case of an earth fault comprising a d.c.
component . 99
Table F.1 – Test parameters for current dips and interruptions . 121
Table J.1 − EMC − Immunity tests . 153
Table J.2 – Reference data for immunity test specifications . 154
Table J.3 − EMC − Emission tests . 157
Table J.4 – Reference data for emission test specifications . 157
Table M.1 – Product information . 184
Table M.2 – Requirements for MRCDs with voltage source . 186
Table M.3 – Test sequences . 188

60947-2  IEC:2006+A1:2009+A2:2013 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 2: Circuit-breakers
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
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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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
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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 60947-2 has been prepared by subcommittee 17B: Low-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
The main changes introduced in this new edition are an amendment to the verification of
dielectric properties, the improvement of EMC clauses in Annexes B, F, J and M, and the
addition of a new Annex O regarding instantaneous trip circuit-breakers.
This consolidated version of IEC 60947-2 consists of the fourth edition (2006) [documents
17B/1455/FDIS and 17B/1463/RVD], its amendment 1 (2009) [documents 17B/1636/FDIS and
17B/1651/RVD] and its amendment 2 (2013) [documents 17B/1796/FDIS and 17B/1807/RVD].
The technical content is therefore identical to the base edition and its amendments and has
been prepared for user convenience.
It bears the edition number 4.2.

– 8 – 60947-2  IEC:2006+A1:2009+A2:2013
A vertical line in the margin shows where the base publication has been modified by
amendments 1 and 2.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The IEC 60947 series comprises the following parts under the general title Low-voltage
switchgear and controlgear:
Part 1: General rules
Part 2: Circuit-breakers
Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units
Part 4: Contactors and motor-starters
Part 5: Control circuit devices and switching elements
Part 6: Multiple function equipment
Part 7: Ancillary equipment
Part 8: Control units for built-in thermal protection (PTC) for rotating electrical machines
The committee has decided that the contents of the base publication and its amendments 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.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.

60947-2  IEC:2006+A1:2009+A2:2013 – 9 –
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 2: Circuit-breakers
1 General
The provisions of the general rules dealt with in IEC 60947-1 are applicable to this standard,
where specifically called for. Clauses and subclauses, tables, figures and annexes of the
general rules thus applicable are identified by reference to IEC 60947-1, for example, 1.2.3 of
IEC 60947-1, Table 4 of IEC 60947-1, or Annex A of IEC 60947-1.
1.1 Scope and object
This standard applies to circuit-breakers, the main contacts of which are intended to be
connected to circuits, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.;
it also contains additional requirements for integrally fused circuit-breakers.
It applies whatever the rated currents, the method of construction or the proposed applications
of the circuit-breakers may be.
The requirements for circuit-breakers which are also intended to provide earth-leakage
protection are contained in Annex B.
The additional requirements for circuit-breakers with electronic over-current protection are
contained in Annex F.
The additional requirements for circuit-breakers for IT systems are contained in Annex H.
The requirements and test methods for electromagnetic compatibility of circuit-breakers are
contained in Annex J.
The requirements for circuit-breakers not fulfilling the requirements for over-current protection
are contained in Annex L.
The requirements for modular residual current devices (without integral current breaking
device) are contained in Annex M.
The requirements and test methods for electromagnetic compatibility of circuit-breaker
auxiliaries are contained in Annex N.
Supplementary requirements for circuit-breakers used as direct-on-line starters are given in
IEC 60947-4-1, applicable to low-voltage contactors and starters.
The requirements for circuit-breakers for the protection of wiring installations in buildings and
similar applications, and designed for use by uninstructed persons, are contained in
IEC 60898.
The requirements for circuit-breakers for equipment (for example electrical appliances) are
contained in IEC 60934.
– 10 – 60947-2  IEC:2006+A1:2009+A2:2013
For certain specific applications (for example traction, rolling mills, marine service) particular or
additional requirements may be necessary.
NOTE Circuit-breakers which are dealt with in this standard may be provided with devices for automatic opening
under predetermined conditions other than those of over-current and undervoltage as, for example, reversal of
power or current. This standard does not deal with the verification of operation under such pre-determined
conditions.
The object of this standard is to state:
a) the characteristics of circuit-breakers;
b) the conditions with which circuit-breakers shall comply with reference to:
1) operation and behaviour in normal service;
2 2) operation and behaviour in case of overload and operation and behaviour in case of
short-circuit, including co-ordination in service (selectivity and back-up protection);
3) dielectric properties;
c) tests intended for confirming that these conditions have been met and the methods to be
adopted for these tests;
d) information to be marked on or given with the apparatus.
1.2 Normative references
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
Amendment 1 (2000)
IEC 60051 (all parts) Direct acting indicating analogue electrical measuring instruments and
their accessories
IEC 60068-2-14:1984, Environmental testing – Part 2: Tests. Test N: Change of temperature
Amendment 1 (1986)
IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
IEC 60364 ( all parts), Electric installations of buildings

IEC 60417, Graphical symbols for use on equipment
IEC 60617, Graphical symbols for diagrams
IEC 60695-2-10:2000, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products
IEC 60695-2-12:2000, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability test method for materials
IEC 60695-2-13:2000, Fire hazard testing – Part 2-13: Glowing/hot-wire based test methods –
Glow-wire ignitability test method for materials
IEC/TR 60755:1983, General requirements for residual current operated protective devices
Amendment 1 (1988)
Amendment 2 (1992)
60947-2  IEC:2006+A1:2009+A2:2013 – 11 –
IEC 60898, Circuit-breakers for over-current protection for household and similar installations
IEC 60934, Circuit-breakers for equipment (CBE)
IEC 60947-1:2007, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-4-1:2000, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
Amendment 1 (2002)
Amendment 2 (2005)
IEC 61000-3-2:2005, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for
harmonic current emissions (equipment input current ≤ 16 A per phase)
IEC 61000-3-3:1994, Electromagnetic compatibility (EMC) – Part 3: Limits – Section 3:
Limitation of voltage fluctuations and flicker in low-voltage supply systems for equipment with
rated current ≤16 A
Amendment 1 (2001)
Amendment 2 (2005)
IEC 61000-4-2:1995, Electromagnetic compatibility(EMC) – Part 4: Testing and measurement
techniques – Section 2: Electrostatic discharge immunity test
Amendment 1 (1998)
Amendment 2 (2000)
IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) – Part 4-3: Testing and
measurement techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:2004, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test
IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
IEC 61000-4-6:2003, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radiofrequency
fields
Amendment 1 (2004)
Amendment 2 (2006)
IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
IEC 61000-4-13:2002, Electromagnetic compatibility (EMC) – Part 4-13: Testing and
measurement techniques – Harmonics and interharmonics including mains signalling at a.c.
power port, low frequency immunity tests
IEC/TR 61000-5-2:1997, Electromagnetic compatibility (EMC) – Part 5: Installation and
mitigation guidelines – Section 2: Earthing and cabling
IEC 61008-1:1996, Residual current operated circuit-breakers without integral over-current
protection for household and similar uses (RCCBs) – Part 1: General rules
Amendment 1 (2002)
Amendment 2 (2006)
IEC 61009-1:1996, Residual current operated circuit-breakers with integral over-current
protection for household and similar uses (RCBOs) – Part 1: General rules
Amendment 1 (2002)
Amendment 2 (2006)
IEC 61131-1:2003, Programmable controllers – Part 1: General information

– 12 – 60947-2  IEC:2006+A1:2009+A2:2013
CISPR 11:2003, Industrial, scientific and medical (ISM) radio-frequency equipment –
Electromagnetic disturbance characteristics – Limits and metho
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