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®
INTERNATIONAL
STANDARD
IEC 60947-5-1
Edition 4.0 2016-05
REDLINE VERSION
colour
inside
Low-voltage switchgear and controlgear –
Part 5-1: Control circuit devices and switching elements – Electromechanical
control circuit devices
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.40; 29.130.20
ISBN 978-2-8322-3431-0
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® Registered trademark of the International Electrotechnical Commission
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IEC 60947-5-1:2016 RLV © IEC 2016
CONTENTS
FOREWORD......................................................................................................................... 9
1
General ....................................................................................................................... 12
1.1
Scope and object ................................................................................................ 12
1.2
Normative references .......................................................................................... 13
2
Terms and definitions .................................................................................................. 15
2.1
Basic terms and definitions .................................................................................. 18
2.2
Control switches.................................................................................................. 18
2.3
Parts of control switches ..................................................................................... 21
2.4
Operation of control switches .............................................................................. 23
2.4.1
Operation of contactor relays ....................................................................... 23
2.4.2
Operation of pilot switches ........................................................................... 24
2.4.3
Operation of rotary switches ......................................................................... 24
2.4.4
Operation of mechanically operated control switches .................................... 25
3
Classification ............................................................................................................... 26
3.1
Contact elements ................................................................................................ 26
3.2
Control switches.................................................................................................. 26
3.3
Control circuit devices ......................................................................................... 27
3.4
Time delay switching elements ............................................................................ 27
3.5
Control switch mounting ...................................................................................... 27
4
Characteristics ............................................................................................................ 27
4.1
4.1.1
4.1.2
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
Summary of characteristics ................................................................................. 27
General ....................................................................................................... 27
Operation of a control switch ........................................................................ 27
Type of control circuit device or switching element ............................................... 27
Kind of control circuit device ......................................................................... 27
Kind of switching elements ........................................................................... 28
Number of poles ........................................................................................... 28
Kind of current ............................................................................................. 28
Interrupting medium ..................................................................................... 28
Operating conditions .................................................................................... 28
Rated and limiting values for switching elements ................................................. 28
General ....................................................................................................... 28
Rated voltages (of a switching element)........................................................ 29
Currents ...................................................................................................... 29
Rated frequency........................................................................................... 29
Vacant ......................................................................................................... 29
Normal and abnormal load characteristics .................................................... 29
Short-circuit characteristics .......................................................................... 30
Utilization categories for switching elements ........................................................ 30
Vacant ................................................................................................................ 30
Vacant ................................................................................................................ 30
Vacant ................................................................................................................ 30
Vacant ................................................................................................................ 30
Switching overvoltages Vacant ............................................................................ 30
Electrically separated contact elements ............................................................... 30
Actuating quantities for pilot switches .................................................................. 30
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4.12 Pilot switches having two or more contact elements ............................................. 31
5
Product information ..................................................................................................... 31
5.1
Nature of information ........................................................................................... 31
5.2
Marking ............................................................................................................... 32
5.2.1
General ....................................................................................................... 32
5.2.2
Terminal identification and marking .............................................................. 32
5.2.3
Functional markings ..................................................................................... 32
5.2.4
Emergency stop ........................................................................................... 32
5.2.5
Operating diagram ....................................................................................... 32
5.2.6
Time delay markings .................................................................................... 33
5.3
Instructions for installation, operation and maintenance ....................................... 33
5.4
Additional information .......................................................................................... 33
6
Normal service, mounting and transport conditions ....................................................... 33
7
6.3.1
Mounting of single hole mounted devices ...................................................... 33
Constructional and performance requirements .............................................................. 35
7.1
Constructional requirements ................................................................................ 35
7.1.1
General ....................................................................................................... 35
7.1.2
Materials ...................................................................................................... 35
7.1.3
Current-carrying parts and their connections ................................................. 36
7.1.4
Clearances and creepage distances ............................................................. 36
7.1.7
Conditions for control switches suitable for isolation ..................................... 36
7.1.8
Terminals ..................................................................................................... 37
7.1.14
Class II control circuit devices ...................................................................... 37
7.1.15
Requirements for control devices with integrally connected cables ................ 37
7.2
Performance requirements .................................................................................. 37
7.2.3
Dielectric properties ..................................................................................... 37
7.2.4
Ability to make and break under normal and abnormal load conditions .......... 37
7.2.5
Conditional short-circuit current .................................................................... 38
7.2.6
Switching overvoltages Vacant ..................................................................... 38
7.2.7
Additional requirements for control switches suitable for isolation .................. 38
7.2.8
Maximum recovery time ............................................................................... 38
7.3
Electromagnetic compatibility (EMC) .................................................................... 38
7.3.1
General ....................................................................................................... 38
7.3.2
Immunity ...................................................................................................... 38
7.3.3
Emission ...................................................................................................... 39
8
Tests ........................................................................................................................... 45
8.1
Kinds of test ........................................................................................................ 45
8.1.1
General ....................................................................................................... 45
8.1.2
Type tests .................................................................................................... 45
8.1.3
Routine tests ............................................................................................... 45
8.1.4
Sampling tests ............................................................................................. 46
8.1.5
Special tests ................................................................................................ 46
8.2
Compliance with constructional requirements ....................................................... 46
8.2.1
Materials ...................................................................................................... 46
8.2.2
Equipment ................................................................................................... 47
8.2.3
Enclosures for equipment ............................................................................. 47
8.2.4
Mechanical and electrical properties of terminals .......................................... 47
8.2.5
Verification of actuating force (or moment) .................................................... 48
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Verification of limitation of rotation (of a rotary switch) .................................. 48
8.2.6
8.2.7
Conduit pull-out test, torque test and bending test with metallic conduits ....... 48
8.3
Performance ....................................................................................................... 49
8.3.1
Test sequences............................................................................................ 49
8.3.2
General test conditions ................................................................................ 49
8.3.3
Performance under no-load, normal load and abnormal load conditions ......... 50
8.3.4
Performance under conditional short-circuit current ...................................... 53
8.4
Tests for EMC ..................................................................................................... 54
8.4.1
General ....................................................................................................... 54
8.4.2
Immunity ...................................................................................................... 54
8.4.3
Emission ...................................................................................................... 55
8.4.4
Test results and test report ........................................................................... 55
Annex A (normative) Electrical ratings based on utilization categories (see 3.1) .................. 63
Annex B (normative) Example of inductive test loads for d.c. contacts ................................. 65
B.1
General ............................................................................................................... 65
B.2
Construction ....................................................................................................... 65
Annex C (normative) Special tests – Durability tests ........................................................... 67
C.1
General ............................................................................................................... 67
C.1.1
Durability declaration ................................................................................... 67
C.1.2
Test procedures ........................................................................................... 67
C.1.3
Failure criteria .............................................................................................. 68
C.2
Mechanical durability ........................................................................................... 68
C.2.1
General ....................................................................................................... 68
C.2.2
Test procedures ........................................................................................... 68
C.3
Electrical durability .............................................................................................. 68
C.3.1
General ....................................................................................................... 68
C.3.2
Test procedures ........................................................................................... 68
Annex D Clearances and creepage distances of control circuit devices Vacant .................... 74
Annex E (normative) Items subject to agreement between manufacturer and user ............... 75
Annex F (normative) Class II control circuit devices insulated by encapsulation
Requirements and tests ...................................................................................................... 76
F.1
General ............................................................................................................... 76
F.2
Terms and definitions .......................................................................................... 76
F.5
Marking ............................................................................................................... 76
F.7
Instructional and functional requirements ............................................................. 77
F.7.1
Choice of compound .................................................................................... 77
F.7.2
Adhesion of the compound ........................................................................... 77
F.7.3
Dielectric properties ..................................................................................... 77
F.8
Tests .................................................................................................................. 77
F.8.1
Kind of tests ................................................................................................. 77
Annex G (normative) Additional requirements for control circuit devices with integrally
connected cables ................................................................................................................ 80
G.1
General ............................................................................................................... 80
G.2
Terms and definitions .......................................................................................... 80
G.7
Constructional and performance requirements ..................................................... 80
G.7.1
Constructional requirements ......................................................................... 80
G.7.2
Performance requirements ........................................................................... 81
G.8
Tests .................................................................................................................. 81
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General ....................................................................................................... 81
G.8.1
G.8.2
Type tests .................................................................................................... 81
G.8.3
Results to be obtained ................................................................................. 82
Annex H (normative) Additional requirements for semiconductor switching elements
for control circuit devices .................................................................................................... 83
H.1
General ............................................................................................................... 83
H.1.1
Scope .............................................................................................................
H.1.2
Object .............................................................................................................
H.2
Terms and definitions .......................................................................................... 83
H.3
Classification ...................................................................................................... 83
H.3.1
Semiconductor switching elements ............................................................... 83
H.4
Characteristics .................................................................................................... 84
H.4.1
Rated voltage .............................................................................................. 84
H.4.2
Utilization categories .................................................................................... 84
H.5
Product information ............................................................................................. 84
H.7
Constructional and performance requirements ..................................................... 84
H.7.1
Performance requirements ........................................................................... 84
H.7.2
Ability to make under abnormal and normal conditions .................................. 85
H.7.3
Conditional short-circuit current .................................................................... 85
H.7.4
Electromagnetic compatibility (EMC) ............................................................ 85
H.8
Tests .................................................................................................................. 85
H.8.1
Type tests .................................................................................................... 85
H.8.2
Voltage drop (U d )......................................................................................... 85
H.8.3
Minimum operational current (I m ) ................................................................. 86
H.8.4
OFF-state current (I r ) ................................................................................... 86
H.8.5
Making and breaking capacities .................................................................... 86
H.8.6
Performance under short-circuit current conditions ....................................... 86
H.8.7
Verification of electromagnetic compatibility .................................................. 87
Annex J (normative) Special requirements for indicator lights and indicating towers ............ 91
J.1
General ............................................................................................................... 91
J.1.1
Scope .............................................................................................................
J.1.2
Object .............................................................................................................
J.2
Terms and definitions .......................................................................................... 91
J.3
Classification ...................................................................................................... 91
J.4
Characteristics .................................................................................................... 92
J.4.1
Rated operational voltage of an indicator light .............................................. 92
J.4.2
Rated thermal power of an indicator light ...................................................... 92
J.4.3
Rated values of the lamp .............................................................................. 92
J.5
Product information ............................................................................................. 92
J.6
Normal service, mounting and transport conditions .............................................. 92
J.7
Constructional and performance requirements ..................................................... 93
J.8
Tests .................................................................................................................. 94
J.8.3
Tests for indicator lights and indicating towers .............................................. 94
J.8.4
Shock and vibration ..................................................................................... 95
J.8.5
Degree of protection for indicating towers ..................................................... 96
Annex K (normative) Special requirements for control switches with direct opening
action ................................................................................................................................. 97
K.1
General ............................................................................................................... 97
K.1.1
Scope .............................................................................................................
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IEC 60947-5-1:2016 RLV © IEC 2016
K.1.2
Object .............................................................................................................
K.2
Terms and definitions .......................................................................................... 97
K.3
Classification ...................................................................................................... 97
K.4
Characteristics .................................................................................................... 98
K.4.4
Utilization categories for switching elements ................................................. 98
K.5
Product information ............................................................................................. 98
K.5.2
Marking ....................................................................................................... 98
K.5.4
Additional information .................................................................................. 98
K.6
Normal service, mounting and transport conditions .............................................. 99
K.7
Constructional and performance requirements ..................................................... 99
K.8
Tests ................................................................................................................ 100
Annex L (normative) Special requirements for mechanically linked contact elements ........ 103
L.1
General ............................................................................................................. 103
L.1.1
Scope .............................................................................................................
L.1.2
Object .............................................................................................................
L.2
Terms and definitions ........................................................................................ 103
L.3
Classification .................................................................................................... 103
L.4
Characteristics .................................................................................................. 103
L.5
Product information ........................................................................................... 104
L.6
Normal service, mounting and transport conditions ............................................ 104
L.7
Constructional and performance requirements ................................................... 104
L.8
Tests ................................................................................................................ 105
L.8.4
Special test for mechanically linked contact elements ................................. 105
Annex M (normative) Terminal marking, distinctive number and distinctive letter for
control circuit devices ....................................................................................................... 106
M.1
Scope ............................................................................................................... 106
M.2
Terminal marking rule ........................................................................................ 106
M.2.1
General ..................................................................................................... 106
M.2.2
Function digit ............................................................................................. 106
M.2.3
Sequence digit ........................................................................................... 106
M.2.4
Numbering method ..................................................................................... 107
M.3
Distinctive number and distinctive letter ............................................................. 107
M.3.1
General ..................................................................................................... 107
M.3.2
Distinctive number ..................................................................................... 107
M.3.3
Distinctive letter ......................................................................................... 107
M.4
Terminal numbering sequence ........................................................................... 107
M.5
Contactor relays designated by the distinctive letter E ........................................ 108
M.6
Contactor relays designated by distinctive letters X, Y or Z ................................ 110
M.6.1
Contactor relays designated by the distinctive letter Z ................................. 110
M.6.2
Contactor relays designated by the distinctive letter X ................................ 110
M.6.3
Contactor relays designated by the distinctive letter Y ................................ 110
Annex N (normative) Procedure to determine reliability data for electromechanical
devices in control circuits used in functional safety applications ........................................ 111
N.1
General ............................................................................................................. 111
N.1.1
Overview ................................................................................................... 111
N.1.2
Scope and object ....................................................................................... 111
N.1.3
General requirements ................................................................................. 111
N.2
Terms, definitions and symbols ......................................................................... 111
N.3
Method based on durability test results .............................................................. 111
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General method ........................................................................................... 111
N.3.1
N.3.2
Test requirements ........................................................................................ 111
N.3.3
Number of samples ...................................................................................... 112
N.3.4
Characterization of a failure mode ............................................................... 112
N.3.5
Weibull modelling ........................................................................................ 112
N.3.6
Useful life and upper limit of failure rate....................................................... 112
N.3.7
Reliability data ............................................................................................. 112
N.4
Data information ................................................................................................. 112
N.5
Example ............................................................................................................. 112
Bibliography ........................................................................................................................ 113
Figure 1 – Examples of the recommended method for drawing an operating diagram of
a rotary switch ...................................................................................................................... 57
Figure 2 – Operation of push-buttons .................................................................................... 58
Figure 3 – Difference e between the over-travel of the actuator and that of the contact
element ................................................................................................................................ 58
Figure 4 – Examples of contact elements (schematic sketches) ............................................ 59
Figure 5 – Test circuits for multi-pole control switches – Contacts of same polarity, not
electrically separated ............................................................................................................ 60
Figure 6 – Test circuits for multi-pole control switches – Contacts of opposite polarity,
and electrically separated ..................................................................................................... 60
Figure 7 – Load L d details for test conditions requiring different values of make and
break current and/or power factor (time constant) ................................................................. 61
Figure 8 – Test circuit, conditional short-circuit current (see 8.3.4.2) .................................... 61
Figure 9 – Current/time limits for d.c. test loads (see 8.3.3.5.4) ............................................ 62
Figure 10 – Voltage drop measurement at contact point of the clamping unit or terminal ....... 62
Figure B.1 – Construction of load for d.c. contacts ................................................................ 66
Figure C.1 – Normal circuit (see C.3.2.2) .............................................................................. 70
Figure C.2 – Simplified circuit (see C.3.2.2) .......................................................................... 70
Figure F.1 – Insulation by encapsulation ............................................................................... 77
Figure F.2 – Test apparatus .................................................................................................. 78
Figure H.1 – Relationship between U e and U B ...................................................................... 84
Figure H.2 – Example of test circuit for the verification of voltage drop, minimum
operational current and OFF-state current (see H.8.2, H.8.3 and H.8.4) ................................ 86
Figure H.3 – Short-circuit testing (see H.8.6.1) ..................................................................... 87
Figure J.1 – Mounting dimensions for indicating tower socket ............................................... 93
Figure J.2 – Mounting dimensions for temperature rise tests ................................................. 94
Figure K.1 – Verification of robustness of the actuating system........................................... 102
Figure L.1 – Example of representation of NO and NC contacts which are mechanically
linked and NC non-linked contact ........................................................................................ 104
Figure L.2 – Symbol for device containing mechanically linked contacts ............................. 104
Table 1 – Utilization categories for switching elements ......................................................... 30
Table 2 – Mounting hole diameter and dimensions of the key recess (if any) ........................ 34
Table 3 – Preferred minimum distances between centres of mounting holes ......................... 34
Table 4 – Verification of making and breaking capacities of switching elements under
normal conditions corresponding to the utilization categories ................................................ 40
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Table 5 – Verification of making and breaking capacities of switching elements under
abnormal conditions corresponding to the utilization categories ........................................... 42
Table 6 – Test conditions for glow-wire test ......................................................................... 42
Table 7 – Acceptance criteria .............................................................................................. 43
Table 8 – Immunity tests ..................................................................................................... 44
Table 9 – Test values for electrical performance and ageing test of screwless-type
clamping units .................................................................................................................... 56
Table A.1 – Examples of contact rating designation based on utilization categories .............. 63
Table A.2 – Examples of semiconductors switching element ratings for 50 Hz
and/or 60 Hz ....................................................................................................................... 64
Table A.3 – Examples of semiconductors switching element ratings for d.c. ......................... 64
Table B.1 – DC loads .......................................................................................................... 66
Table C.1 – Making and breaking conditions for electrical durability ..................................... 69
Table H.1 – Immunity tests .....................................................................................................
Table M.1 – Diagrams of control switches.......................................................................... 108
Table M.2 – Diagrams of contactor relays designated by the distinctive letter E .................. 109
Table M.3 – Diagrams of contactor relays designated by the distinctive letter Y .................. 110
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 5-1: Control circuit devices and switching elements –
Electromechanical control circuit devices
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,
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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 nongovernmental 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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
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IEC 60947-5-1:2016 RLV © IEC 2016
International Standard IEC 60947-5-1 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.
This fourth edition cancels and replaces the third edition published in 2003 and its
Amendment 1:2009. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) update of normative references;
b) update and restructuration of subclauses in 7.1;
c) addition of material requirements and test;
d) udpate of EMC requirements;
e) clarification of requirements and update of 8.2;
f)
addition of requirements for screwless-type clamping units;
g) udpate of existing Tables 4 and 5;
h) addition of new Tables 6, 7, 8 and 9;
i)
addition of a new Figure 10 ;
j)
addition of a new Annex N.
The text of this standard is based on the following documents:
FDIS
Report on voting
121A/62/FDIS
121A/76/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 International Standard should be used in conjunction with IEC 60947-1.
The provisions of the general rules, IEC 60947-1, are applicable to this standard, where
specifically called for. General rules, clauses and subclauses thus applicable, as well as
tables, figures and annexes are identified by a reference to IEC 60947-1, for example 1.2.3,
Table 4 or Annex A of IEC 60947-1:2007.
The following differing practices of a less permanent nature exist in the countries indicated
below.
–
7.2.4.1: Making and breaking capacities (United States of America and Canada)
–
8.3.3.5.2: Test circuits and connections (United States of America and Canada)
A list of all the parts in the IEC 60947 series, under the general title Low-voltage switchgear
and controlgear, can be found on the IEC website.
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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.
The contents of the corrigenda of July 2016 and April 2020 have been included in this
copy.
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.
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IEC 60947-5-1:2016 RLV © IEC 2016
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 5-1: Control circuit devices and switching elements –
Electromechanical control circuit devices
1
General
The provisions of the general rules, IEC 60947-1, are applicable to this standard, where
specifically called for. General rules, clauses and subclauses thus applicable, as well as
tables, figures and annexes are identified by a reference to IEC 60947-1, for example 1.2.3,
Table 4 or Annex A of IEC 60947-1.
1.1
Scope and object
This part of IEC 60947 applies to control circuit devices and switching elements intended for
controlling, signalling, interlocking, etc., of switchgear and controlgear.
It applies to control circuit devices having a rated voltage not exceeding 1 000 V a.c. (at a
frequency not exceeding 1 000 Hz) or 600 V d.c.
However, for operational voltages below 100 V a.c. or d.c., see 4.3.2.2.
This standard applies to specific types of control circuit devices such as:
•
manual control switches, for example push-buttons, rotary switches, foot switches, etc.;
•
electromagnetically operated control switches, either time-delayed or instantaneous, for
example contactor relays;
•
pilot switches, for example pressure
(thermostats), programmers, etc.;
•
position switches, for example control switches operated by part of a machine or
mechanism;
•
associated control circuit equipment, for example indicator lights, etc.
switches,
temperature
sensitive
switches
NOTE 1
light(s).
A control circuit device includes (a) control switch(es) and associated devices such as (an) indicator
NOTE 2
A control switch includes (a) switching element(s) and an actuating system.
NOTE 3
A switching element may can be a contact element or a semiconductor element.
It also applies to specific types of switching elements associated with other devices (whose
main circuits are covered by other standards) such as:
•
auxiliary contacts of a switching device (e.g. contactor, circuit breaker. etc.) which are not
dedicated exclusively for use with the coil of that device;
•
interlocking contacts of enclosure doors;
•
control circuit contacts of rotary switches;
•
control circuit contacts of overload relays.
Contactor relays shall also meet comply with the requirements and tests of IEC 60947-4-1
except for the utilization category which shall comply with this standard.
This standard does not include the relays covered in IEC 60255 or in the IEC 61810 series,
nor automatic electrical control devices for household and similar purposes.
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The colour requirements of indicator lights, push-buttons, etc., are found in IEC 60073 and
also in publication 2 of the International CIE S 0004/E-2001 from the Commission of
Illumination (CIE).
The object of this standard is to state:
a) the characteristics of control circuit devices;
b) the electrical and mechanical requirements with respect to:
1) the various duties to be performed;
2) the significance of the rated characteristics and of the markings;
3) the tests to verify the rated characteristics;
c) the functional requirements to be satisfied by the control circuit devices with respect to:
1) environmental conditions, including those of enclosed equipment;
2) dielectric properties;
3) terminals.
1.2
Normative references
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.
IEC 60050(441):1984, International Electrotechnical Vocabulary (IEV) – Chapter 441:
Switchgear, controlgear and fuses
Amendment 1 (2000)
IEC 60050(446):1983, International Electrotechnical Vocabulary (IEV) – Chapter 446:
Electrical relays
IEC 60068-2-6:1995 2007, Environmental testing – Part 2-6: Tests – Test Fc: Vibration
(sinusoidal)
IEC 60068-2-14:1984 2009, Environmental testing – Part 2-14: Tests – Test N: Change of
temperature
Amendment 1 (1986)
IEC 60068-2-27:1987 2008, Environmental testing – Part 2-27: Tests – Test Ea and guidance:
Shock
IEC 60068-2-30:1980 2005, Environmental testing – Part 2-30: Tests – Test Db and guidance:
Damp heat, cyclic (12 h + 12 h cycle)
Amendment 1 (1985)
IEC 60073:2002, Basic and safety principles for man-machine interface, marking and
identification – Coding principles for indications and actuators
IEC 60112:2003, Method for the determination of the proof and the comparative tracking
indices of solid insulating materials
IEC 60255 (all parts), Electrical relays
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IEC 60947-5-1:2016 RLV © IEC 2016
IEC 60417-DB:2002 1, Graphical symbols for use on equipment
IEC 60617 (all parts)-DB:2012 2, Graphical symbols for diagrams
IEC 60695-2-10:2013, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2014, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products (GWEPT)
IEC 60695-2-12:2010, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials
IEC 60695-2-12:2010/AMD1:2014
IEC 60947-1:1999 2007, Low-voltage switchgear and controlgear – Part 1: General rules
IEC 60947-1:2007/AMD1:2000 2010
IEC 60947-1:2007/AMD2:2001 2014
IEC 60947-4-1:2000 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 60947-5-5:1997, Low-voltage switchgear and controlgear – Part 5-5: Control circuit
devices and switching elements – Electrical emergency stop device with mechanical latching
function
IEC 60947-5-5:1997/AMD1:2005
IEC 60947-5-5:1997/AMD2:2016
IEC 60999-1:1999, Connecting devices – Electrical copper conductors – Safety requirements
for screw-type and screwless-type clamping units – Part 1: General requirements and
particular requirements for clamping units for conductors from 0,2 mm 2 up to 35 mm 2
(included)
IEC 61000-3-2, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic
current emissions (equipment input current < 16 A per phase)
IEC 61000-3-3, Electromagnetic compatibility (EMC) – Part 3-3: Limits – Limitation of voltage
changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment
with rated current <16 A per phase and not subject to conditional connection
IEC 61000-4-2:1995 2008, Electromagnetic compatibility (EMC) – Part 4-2: Testing and
measurement techniques – Electrostatic discharge immunity test
Amendment 1 (1998)
Amendment 2 (2000)
IEC 61000-4-3:2002 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 61000-4-4:1995 2012, Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Section 4: Electrical fast transient/burst immunity test
Amendment 1 (2000)
Amendment 2 (2001)
___________
1
“DB” refers here to the IEC on-line database, available at: http://www.graphical-symbols.info/equipment.
2
“DB” refers there to the IEC on-line database, available at: http://std.iec.ch/iec60617.
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IEC 61000-4-5:1995 2014, Electromagnetic compatibility (EMC) – Part 4-5: Testing and
measurement techniques – Surge immunity test
Amendment 1 (2000)
IEC 61000-4-6:1996 2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
Amendment 1 (2000)
IEC 61000-4-8:1993 2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and
measurement techniques – Power frequency magnetic field immunity test
Amendment 1 (2000)
IEC 61000-4-11:1994 2004, Electromagnetic compatibility (EMC) – Part 4-11: Testing and
measurement techniques – Voltage dips, short interruptions and voltage variations immunity
tests
Amendment 1 (2000)
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 61000-4-13:2002/AMD1:2009
IEC 61000-4-13:2002/AMD2:2015
IEC 61140:2001 2015, Protection against electric shock – Common aspects for installation
and equipment
IEC 61140:2015/AMD1:2004
CISPR 11:1997 2015, Industrial, scientific and medical (ISM) radio-frequency equipment –
Electromagnetic Radio-frequency disturbance characteristics – Limits and methods of
measurement
Amendment 1 (1999)
CIE S 004/E-2001, Colours of Light Signals
2
Terms and definitions
For the purposes of document, the terms and definitions given in IEC 60947-1, as well as the
following apply.
Alphabetical index of definitions ............................................................................ References
A
Actuating quantity ....................................................................................................... 2.4.2.1
Adjustable delay (of a contact element) ....................................................................... 2.4.1.4
B
Biased position ........................................................................................................... 2.4.3.4
Bounce time ............................................................................................................. 2.4.4.10
Break-contact element (normally closed) ..................................................................... 2.3.3.4
Button ........................................................................................................................... 2.3.4
C
Change-over contact elements .................................................................................... 2.3.3.5
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®
IEC 60947-5-1
Edition 4.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear –
Part 5-1: Control circuit devices and switching elements – Electromechanical
control circuit devices
IEC 60947-5-1:2016-05(en-fr)
Appareillage à basse tension –
Partie 5-1: Appareils et éléments de commutation pour circuits de commande –
Appareils électromécaniques pour circuits de commande
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IEC 60947-5-1:2016 © IEC 2016
CONTENTS
FOREWORD......................................................................................................................... 9
1
General ....................................................................................................................... 11
1.1
Scope and object ................................................................................................ 11
1.2
Normative references .......................................................................................... 12
2
Terms and definitions .................................................................................................. 14
2.1
Basic terms and definitions .................................................................................. 16
2.2
Control switches.................................................................................................. 17
2.3
Parts of control switches ..................................................................................... 20
2.4
Operation of control switches .............................................................................. 22
2.4.1
Operation of contactor relays ....................................................................... 22
2.4.2
Operation of pilot switches ........................................................................... 22
2.4.3
Operation of rotary switches ......................................................................... 23
2.4.4
Operation of mechanically operated control switches .................................... 24
3
Classification ............................................................................................................... 25
3.1
Contact elements ................................................................................................ 25
3.2
Control switches.................................................................................................. 25
3.3
Control circuit devices ......................................................................................... 25
3.4
Time delay switching elements ............................................................................ 25
3.5
Control switch mounting ...................................................................................... 25
4
Characteristics ............................................................................................................ 25
4.1
4.1.1
4.1.2
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
Summary of characteristics ................................................................................. 25
General ....................................................................................................... 25
Operation of a control switch ........................................................................ 26
Type of control circuit device or switching element ............................................... 26
Kind of control circuit device ......................................................................... 26
Kind of switching elements ........................................................................... 26
Number of poles ........................................................................................... 26
Kind of current ............................................................................................. 26
Interrupting medium ..................................................................................... 27
Operating conditions .................................................................................... 27
Rated and limiting values for switching elements ................................................. 27
General ....................................................................................................... 27
Rated voltages (of a switching element)........................................................ 27
Currents ...................................................................................................... 28
Rated frequency........................................................................................... 28
Vacant ......................................................................................................... 28
Normal and abnormal load characteristics .................................................... 28
Short-circuit characteristics .......................................................................... 28
Utilization categories for switching elements ........................................................ 28
Vacant ................................................................................................................ 29
Vacant ................................................................................................................ 29
Vacant ................................................................................................................ 29
Vacant ................................................................................................................ 29
Vacant ................................................................................................................ 29
Electrically separated contact elements ............................................................... 29
Actuating quantities for pilot switches .................................................................. 29
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4.12 Pilot switches having two or more contact elements ............................................. 29
5
Product information ..................................................................................................... 29
5.1
Nature of information ........................................................................................... 29
5.2
Marking ............................................................................................................... 30
5.2.1
General ....................................................................................................... 30
5.2.2
Terminal identification and marking .............................................................. 30
5.2.3
Functional markings ..................................................................................... 31
5.2.4
Emergency stop ........................................................................................... 31
5.2.5
Operating diagram ....................................................................................... 31
5.2.6
Time delay markings .................................................................................... 31
5.3
Instructions for installation, operation and maintenance ....................................... 31
5.4
Additional information .......................................................................................... 32
6
Normal service, mounting and transport conditions ....................................................... 32
7
6.3.1
Mounting of single hole mounted devices ...................................................... 32
Constructional and performance requirements .............................................................. 33
7.1
Constructional requirements ................................................................................ 33
7.1.1
General ....................................................................................................... 33
7.1.2
Materials ...................................................................................................... 33
7.1.3
Current-carrying parts and their connections ................................................. 34
7.1.4
Clearances and creepage distances ............................................................. 34
7.1.7
Conditions for control switches suitable for isolation ..................................... 35
7.1.8
Terminals ..................................................................................................... 35
7.1.14
Class II control circuit devices ...................................................................... 35
7.1.15
Requirements for control devices with integrally connected cables ................ 35
7.2
Performance requirements .................................................................................. 35
7.2.3
Dielectric properties ..................................................................................... 35
7.2.4
Ability to make and break under normal and abnormal load conditions .......... 35
7.2.5
Conditional short-circuit current .................................................................... 36
7.2.6
Vacant ......................................................................................................... 36
7.2.7
Additional requirements for control switches suitable for isolation .................. 36
7.2.8
Maximum recovery time ............................................................................... 36
7.3
Electromagnetic compatibility (EMC) .................................................................... 36
7.3.1
General ....................................................................................................... 36
7.3.2
Immunity ...................................................................................................... 37
7.3.3
Emission ...................................................................................................... 38
8
Tests ........................................................................................................................... 43
8.1
Kinds of test ........................................................................................................ 43
8.1.1
General ....................................................................................................... 43
8.1.2
Type tests .................................................................................................... 43
8.1.3
Routine tests ............................................................................................... 43
8.1.4
Sampling tests ............................................................................................. 44
8.1.5
Special tests ................................................................................................ 44
8.2
Compliance with constructional requirements ....................................................... 44
8.2.1
Materials ...................................................................................................... 44
8.2.2
Equipment ................................................................................................... 44
8.2.3
Enclosures for equipment ............................................................................. 45
8.2.4
Mechanical and electrical properties of terminals .......................................... 45
8.2.5
Verification of actuating force (or moment) .................................................... 46
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8.2.6
Verification of limitation of rotation (of a rotary switch) .................................. 46
8.2.7
Conduit pull-out test, torque test and bending test with metallic conduits ....... 46
8.3
Performance ....................................................................................................... 46
8.3.1
Test sequences............................................................................................ 46
8.3.2
General test conditions ................................................................................ 47
8.3.3
Performance under no-load, normal load and abnormal load conditions ......... 48
8.3.4
Performance under conditional short-circuit current ...................................... 51
8.4
Tests for EMC ..................................................................................................... 52
8.4.1
General ....................................................................................................... 52
8.4.2
Immunity ...................................................................................................... 52
8.4.3
Emission ...................................................................................................... 53
8.4.4
Test results and test report ........................................................................... 53
Annex A (normative) Electrical ratings based on utilization categories (see 3.1) .................. 61
Annex B (normative) Example of inductive test loads for d.c. contacts ................................. 63
B.1
General ............................................................................................................... 63
B.2
Construction ....................................................................................................... 63
Annex C (normative) Special tests – Durability tests ........................................................... 65
C.1
General ............................................................................................................... 65
C.1.1
Durability declaration ................................................................................... 65
C.1.2
Test procedures ........................................................................................... 65
C.1.3
Failure criteria .............................................................................................. 66
C.2
Mechanical durability ........................................................................................... 66
C.2.1
General ....................................................................................................... 66
C.2.2
Test procedures ........................................................................................... 66
C.3
Electrical durability .............................................................................................. 66
C.3.1
General ....................................................................................................... 66
C.3.2
Test procedures ........................................................................................... 66
Annex D Vacant .................................................................................................................. 69
Annex E (normative) Items subject to agreement between manufacturer and user ............... 70
Annex F (normative) Class II control circuit devices insulated by encapsulation
Requirements and tests ...................................................................................................... 71
F.1
General ............................................................................................................... 71
F.2
Terms and definitions .......................................................................................... 71
F.5
Marking ............................................................................................................... 71
F.7
Instructional and functional requirements ............................................................. 72
F.7.1
Choice of compound .................................................................................... 72
F.7.2
Adhesion of the compound ........................................................................... 72
F.7.3
Dielectric properties ..................................................................................... 72
F.8
Tests .................................................................................................................. 72
F.8.1
Kind of tests ................................................................................................. 72
Annex G (normative) Additional requirements for control circuit devices with integrally
connected cables ................................................................................................................ 75
G.1
General ............................................................................................................... 75
G.2
Terms and definitions .......................................................................................... 75
G.7
Constructional and performance requirements ..................................................... 75
G.7.1
Constructional requirements ......................................................................... 75
G.7.2
Performance requirements ........................................................................... 76
G.8
Tests .................................................................................................................. 76
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G.8.1
General ....................................................................................................... 76
G.8.2
Type tests .................................................................................................... 76
G.8.3
Results to be obtained ................................................................................. 77
Annex H (normative) Additional requirements for semiconductor switching elements
for control circuit devices .................................................................................................... 78
H.1
General ............................................................................................................... 78
H.2
Terms and definitions .......................................................................................... 78
H.3
Classification ...................................................................................................... 78
H.3.1
Semiconductor switching elements ............................................................... 78
H.4
Characteristics .................................................................................................... 78
H.4.1
Rated voltage .............................................................................................. 78
H.4.2
Utilization categories .................................................................................... 79
H.5
Product information ............................................................................................. 79
H.7
Constructional and performance requirements ..................................................... 79
H.7.1
Performance requirements ........................................................................... 79
H.7.2
Ability to make under abnormal and normal conditions .................................. 80
H.7.3
Conditional short-circuit current .................................................................... 80
H.7.4
Electromagnetic compatibility (EMC) ............................................................ 80
H.8
Tests .................................................................................................................. 80
H.8.1
Type tests .................................................................................................... 80
H.8.2
Voltage drop (U d )......................................................................................... 80
H.8.3
Minimum operational current (I m ) ................................................................. 81
H.8.4
OFF-state current (I r ) ................................................................................... 81
H.8.5
Making and breaking capacities .................................................................... 81
H.8.6
Performance under short-circuit current conditions ....................................... 81
H.8.7
Verification of electromagnetic compatibility .................................................. 82
Annex J (normative) Special requirements for indicator lights and indicating towers ............ 84
J.1
General ............................................................................................................... 84
J.2
Terms and definitions .......................................................................................... 84
J.3
Classification ...................................................................................................... 84
J.4
Characteristics .................................................................................................... 85
J.4.1
Rated operational voltage of an indicator light .............................................. 85
J.4.2
Rated thermal power of an indicator light ...................................................... 85
J.4.3
Rated values of the lamp .............................................................................. 85
J.5
Product information ............................................................................................. 85
J.6
Normal service, mounting and transport conditions .............................................. 85
J.7
Constructional and performance requirements ..................................................... 86
J.8
Tests .................................................................................................................. 86
J.8.3
Tests for indicator lights and indicating towers .............................................. 86
J.8.4
Shock and vibration ..................................................................................... 88
J.8.5
Degree of protection for indicating towers ..................................................... 89
Annex K (normative) Special requirements for control switches with direct opening
action ................................................................................................................................. 90
K.1
General ............................................................................................................... 90
K.2
Terms and definitions .......................................................................................... 90
K.3
Classification ...................................................................................................... 90
K.4
Characteristics .................................................................................................... 91
K.4.4
Utilization categories for switching elements ................................................. 91
K.5
Product information ............................................................................................. 91
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K.5.2
Marking ....................................................................................................... 91
K.5.4
Additional information .................................................................................. 91
K.6
Normal service, mounting and transport conditions .............................................. 92
K.7
Constructional and performance requirements ..................................................... 92
K.8
Tests .................................................................................................................. 93
Annex L (normative) Special requirements for mechanically linked contact elements .......... 96
L.1
General ............................................................................................................... 96
L.2
Terms and definitions .......................................................................................... 96
L.3
Classification ...................................................................................................... 96
L.4
Characteristics .................................................................................................... 96
L.5
Product information ............................................................................................. 96
L.6
Normal service, mounting and transport conditions .............................................. 97
L.7
Constructional and performance requirements ..................................................... 97
L.8
Tests .................................................................................................................. 97
L.8.4
Special test for mechanically linked contact elements ................................... 98
Annex M (normative) Terminal marking, distinctive number and distinctive letter for
control circuit devices ......................................................................................................... 99
M.1
Scope ................................................................................................................. 99
M.2
Terminal marking rule .......................................................................................... 99
M.2.1
General ....................................................................................................... 99
M.2.2
Function digit ............................................................................................... 99
M.2.3
Sequence digit ............................................................................................. 99
M.2.4
Numbering method ..................................................................................... 100
M.3
Distinctive number and distinctive letter ............................................................. 100
M.3.1
General ..................................................................................................... 100
M.3.2
Distinctive number ..................................................................................... 100
M.3.3
Distinctive letter ......................................................................................... 100
M.4
Terminal numbering sequence ........................................................................... 100
M.5
Contactor relays designated by the distinctive letter E ........................................ 101
M.6
Contactor relays designated by distinctive letters X, Y or Z ................................ 103
M.6.1
Contactor relays designated by the distinctive letter Z ................................. 103
M.6.2
Contactor relays designated by the distinctive letter X ................................ 103
M.6.3
Contactor relays designated by the distinctive letter Y ................................ 103
Annex N (normative) Procedure to determine reliability data for electromechanical
devices in control circuits used in functional safety applications ........................................ 104
N.1
General ............................................................................................................. 104
N.1.1
Overview ................................................................................................... 104
N.1.2
Scope and object ....................................................................................... 104
N.1.3
General requirements ................................................................................. 104
N.2
Terms, definitions and symbols ......................................................................... 104
N.3
Method based on durability test results .............................................................. 104
N.3.1
General method ......................................................................................... 104
N.3.2
Test requirements ...................................................................................... 104
N.3.3
Number of samples .................................................................................... 105
N.3.4
Characterization of a failure mode .............................................................. 105
N.3.5
Weibull modelling ....................................................................................... 105
N.3.6
Useful life and upper limit of failure rate ...................................................... 105
N.3.7
Reliability data ........................................................................................... 105
N.4
Data information................................................................................................ 105
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N.5
Example ........................................................................................................... 105
Bibliography ..................................................................................................................... 106
Figure 1 – Examples of the recommended method for drawing an operating diagram of
a rotary switch .................................................................................................................... 55
Figure 2 – Operation of push-buttons .................................................................................. 56
Figure 3 – Difference e between the over-travel of the actuator and that of the contact
element .............................................................................................................................. 56
Figure 4 – Examples of contact elements (schematic sketches) ........................................... 57
Figure 5 – Test circuits for multi-pole control switches – Contacts of same polarity, not
electrically separated .......................................................................................................... 58
Figure 6 – Test circuits for multi-pole control switches – Contacts of opposite polarity,
and electrically separated ................................................................................................... 58
Figure 7 – Load L d details for test conditions requiring different values of make and
break current and/or power factor (time constant) ................................................................ 59
Figure 8 – Test circuit, conditional short-circuit current (see 8.3.4.2) .................................... 59
Figure 9 – Current/time limits for d.c. test loads (see 8.3.3.5.4) ............................................ 60
Figure 10 – Voltage drop measurement at contact point of the clamping unit or terminal ....... 60
Figure B.1 – Construction of load for d.c. contacts ............................................................... 64
Figure C.1 – Normal circuit (see C.3.2.2) ............................................................................. 68
Figure C.2 – Simplified circuit (see C.3.2.2) ......................................................................... 68
Figure F.1 – Insulation by encapsulation ............................................................................. 72
Figure F.2 – Test apparatus ................................................................................................ 73
Figure H.1 – Relationship between U e and U B .................................................................... 79
Figure H.2 – Example of test circuit for the verification of voltage drop, minimum
operational current and OFF-state current (see H.8.2, H.8.3 and H.8.4) ............................... 81
Figure H.3 – Short-circuit testing (see H.8.6.1) .................................................................... 82
Figure J.1 – Mounting dimensions for indicating tower socket .............................................. 86
Figure J.2 – Mounting dimensions for temperature rise tests ................................................ 87
Figure K.1 – Verification of robustness of the actuating system ............................................ 95
Figure L.1 – Example of representation of NO and NC contacts which are mechanically
linked and NC non-linked contact ........................................................................................ 97
Figure L.2 – Symbol for device containing mechanically linked contacts ............................... 97
Table 1 – Utilization categories for switching elements ........................................................ 29
Table 2 – Mounting hole diameter and dimensions of the key recess (if any) ........................ 32
Table 3 – Preferred minimum distances between centres of mounting holes ......................... 33
Table 4 – Verification of making and breaking capacities of switching elements under
normal conditions corresponding to the utilization categories ............................................... 39
Table 5 – Verification of making and breaking capacities of switching elements under
abnormal conditions corresponding to the utilization categories ........................................... 40
Table 6 – Test conditions for glow-wire test ......................................................................... 40
Table 7 – Acceptance criteria .............................................................................................. 41
Table 8 – Immunity tests ..................................................................................................... 42
Table 9 – Test values for electrical performance and ageing test of screwless-type
clamping units .................................................................................................................... 54
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Table A.1 – Examples of contact rating designation based on utilization categories .............. 61
Table A.2 – Examples of semiconductors switching element ratings for 50 Hz and/or 60 Hz . 62
Table A.3 – Examples of semiconductors switching element ratings for d.c. ......................... 62
Table B.1 – DC loads .......................................................................................................... 64
Table C.1 – Making and breaking conditions for electrical durability ..................................... 67
Table M.1 – Diagrams of control switches.......................................................................... 101
Table M.2 – Diagrams of contactor relays designated by the distinctive letter E .................. 102
Table M.3 – Diagrams of contactor relays designated by the distinctive letter Y .................. 103
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–9–
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 5-1: Control circuit devices and switching elements –
Electromechanical control circuit devices
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 nongovernmental 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 60947-5-1 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.
This fourth edition cancels and replaces the third edition published in 2003 and its
Amendment 1:2009. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) update of normative references;
b) update and restructuration of subclauses in 7.1;
c) addition of material requirements and test;
d) udpate of EMC requirements;
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IEC 60947-5-1:2016 © IEC 2016
e) clarification of requirements and update of 8.2;
f)
addition of requirements for screwless-type clamping units;
g) udpate of existing Tables 4 and 5;
h) addition of new Tables 6, 7, 8 and 9;
i)
addition of a new Figure 10 ;
j)
addition of a new Annex N.
The text of this standard is based on the following documents:
FDIS
Report on voting
121A/62/FDIS
121A/76/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 International Standard should be used in conjunction with IEC 60947-1.
The provisions of the general rules, IEC 60947-1, are applicable to this standard, where
specifically called for. General rules, clauses and subclauses thus applicable, as well as
tables, figures and annexes are identified by a reference to IEC 60947-1, for example 1.2.3,
Table 4 or Annex A of IEC 60947-1:2007.
The following differing practices of a less permanent nature exist in the countries indicated
below.
–
7.2.4.1: Making and breaking capacities (United States of America and Canada)
–
8.3.3.5.2: Test circuits and connections (United States of America and Canada)
A list of all the parts in the IEC 60947 series, under the general title Low-voltage switchgear
and controlgear, 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 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.
The contents of the corrigenda of July 2016 and April 2020 have been included in this copy.
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LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 5-1: Control circuit devices and switching elements –
Electromechanical control circuit devices
1
General
1.1
Scope and object
This part of IEC 60947 applies to control circuit devices and switching elements intended for
controlling, signalling, interlocking, etc., of switchgear and controlgear.
It applies to control circuit devices having a rated voltage not exceeding 1 000 V a.c. (at a
frequency not exceeding 1 000 Hz) or 600 V d.c.
However, for operational voltages below 100 V a.c. or d.c., see 4.3.2.2.
This standard applies to specific types of control circuit devices such as:
•
manual control switches, for example push-buttons, rotary switches, foot switches, etc.;
•
electromagnetically operated control switches, either time-delayed or instantaneous, for
example contactor relays;
•
pilot switches, for example pressure
(thermostats), programmers, etc.;
•
position switches, for example control switches operated by part of a machine or
mechanism;
•
associated control circuit equipment, for example indicator lights, etc.
switches,
temperature
sensitive
switches
NOTE 1
light(s).
A control circuit device includes (a) control switch(es) and associated devices such as (an) indicator
NOTE 2
A control switch includes (a) switching element(s) and an actuating system.
NOTE 3
A switching element can be a contact element or a semiconductor element.
It also applies to specific types of switching elements associated with other devices (whose
main circuits are covered by other standards) such as:
•
auxiliary contacts of a switching device (e.g. contactor, circuit breaker. etc.) which are not
dedicated exclusively for use with the coil of that device;
•
interlocking contacts of enclosure doors;
•
control circuit contacts of rotary switches;
•
control circuit contacts of overload relays.
Contactor relays also comply with the requirements and tests of IEC 60947-4-1 except for the
utilization category which comply with this standard.
This standard does not include the relays covered in IEC 60255 or in the IEC 61810 series,
nor automatic electrical control devices for household and similar purposes.
The colour requirements of indicator lights, push-buttons, etc., are found in IEC 60073 and
also in CIE S 0004/E-2001 from the Commission of Illumination (CIE).
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IEC 60947-5-1:2016 © IEC 2016
The object of this standard is to state:
a) the characteristics of control circuit devices;
b) the electrical and mechanical requirements with respect to:
1) the various duties to be performed;
2) the significance of the rated characteristics and of the markings;
3) the tests to verify the rated characteristics;
c) the functional requirements to be satisfied by the control circuit devices with respect to:
1) environmental conditions, including those of enclosed equipment;
2) dielectric properties;
3) terminals.
1.2
Normative references
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.
IEC 60068-2-6:2007, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-14:2009, Environmental testing – Part 2-14: Tests – Test N: Change of
temperature
IEC 60068-2-27:2008, Environmental testing – Part 2-27: Tests – Test Ea and guidance:
Shock
IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
IEC 60073:2002, Basic and safety principles for man-machine interface, marking and
identification – Coding principles for indications and actuators
IEC 60417-DB:2002 1, Graphical symbols for use on equipment
IEC 60617-DB:2012 2, Graphical symbols for diagrams
IEC 60695-2-10:2013, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2014, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products (GWEPT)
IEC 60695-2-12:2010, Fire hazard testing – Part 2-12: Glowing/hot-wire based test methods –
Glow-wire flammability index (GWFI) test method for materials
IEC 60695-2-12:2010/AMD1:2014
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
___________
1
“DB” refers here to the IEC on-line database, available at: http://www.graphical-symbols.info/equipment.
2
“DB” refers there to the IEC on-line database, available at: http://std.iec.ch/iec60617.
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– 13 –
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 60947-5-5:1997, Low-voltage switchgear and controlgear – Part 5-5: Control circuit
devices and switching elements – Electrical emergency stop device with mechanical latching
function
IEC 60947-5-5:1997/AMD1:2005
IEC 60947-5-5:1997/AMD2:2016
IEC 60999-1:1999, Connecting devices – Electrical copper conductors – Safety requirements
for screw-type and screwless-type clamping units – Part 1: General requirements and
particular requirements for clamping units for conductors from 0,2 mm 2 up to 35 mm 2
(included)
IEC 61000-3-2, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic
current emissions (equipment input current < 16 A per phase)
IEC 61000-3-3, Electromagnetic compatibility (EMC) – Part 3-3: Limits – Limitation of voltage
changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment
with rated current <16 A per phase and not subject to conditional connection
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
measurement techniques – Electrical fast transient/burst immunity test
4-4:
Testing
and
IEC 61000-4-5:2014, Electromagnetic compatibility
measurement techniques – Surge immunity test
4-5:
Testing
and
(EMC)
–
Part
IEC 61000-4-6:2013, Electromagnetic compatibility (EMC) – Part 4-6: Testing and
measurement techniques – Immunity to conducted disturbances, induced by radio-frequency
fields
IEC 61000-4-8:2009, Electromagnetic compatibility (EMC) – Part 4-8: Testing and measurement techniques – Power frequency magnetic field immunity test
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 61000-4-13:2002/AMD1:2009
IEC 61000-4-13:2002/AMD2:2015
IEC 61140:2015, Protection against electric shock – Common aspects for installation and
equipment
IEC 61140:2015/AMD1:2004
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IEC 60947-5-1:2016 © IEC 2016
CISPR 11:2015, Industrial, scientific and medical equipment – Radio-frequency disturbance
characteristics – Limits and methods of measurement
CIE S 004/E-2001, Colours of Light Signals
2
Terms and definitions
For the purposes of document, the terms and definitions given in IEC 60947-1, as well as the
following apply.
Alphabetical index of definitions ............................................................................ References
A
Actuating quantity ....................................................................................................... 2.4.2.1
Adjustable delay (of a contact element) ....................................................................... 2.4.1.4
B
Biased position ........................................................................................................... 2.4.3.4
Bounce time ............................................................................................................. 2.4.4.10
Break-contact element (normally closed) ..................................................................... 2.3.3.4
Button ........................................................................................................................... 2.3.4
C
Change-over contact elements .................................................................................... 2.3.3.5
Contact element (of a control switch) .............................................................................. 2.3.3
Contact unit .............................................................................................................. 2.3.3.10
Control circuit device ..................................................................................................... 2.1.1
Control station ............................................................................................................... 2.1.4
Control switch ................................................................................................................ 2.1.2
Control switch suitable for isolation ................................................................................ 2.1.3
Covered push-button ................................................................................................ 2.2.2.11
D
d-delay (of a contact element) ..................................................................................... 2.4.1.2
Definite position (abbreviation: position) (of a rotary switch) ........................................ 2.4.3.1
Delayed action push-button ......................................................................................... 2.2.2.9
Dependent action contact element .............................................................................. 2.3.3.9
Differential value ......................................................................................................... 2.4.2.4
Direct drive ................................................................................................................. 2.4.4.3
Double gap contact element ........................................................................................ 2.3.3.2
E
e-delay (of a contact element) ..................................................................................... 2.4.1.1
Electrically separated contact elements ....................................................................... 2.3.3.7
End stop ........................................................................................................................ 2.3.6
Extended button ......................................................................................................... 2.3.4.3
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IEC 60947-5-1:2016 © IEC 2016
SOMMAIRE
AVANT-PROPOS .............................................................................................................. 115
1
Généralités ............................................................................................................... 117
1.1
Domaine d'application et objet........................................................................... 117
1.2
Références normatives ..................................................................................... 118
2
Termes et définitions ................................................................................................. 120
2.1
Termes et définitions fondamentaux .................................................................. 122
2.2
Auxiliaires de commande .................................................................................. 123
2.3
Parties d'auxiliaires de commande .................................................................... 126
2.4
Manœuvre des auxiliaires de commande ........................................................... 128
2.4.1
Manœuvre des contacteurs auxiliaires ....................................................... 128
2.4.2
Manœuvre des auxiliaires automatiques de commande .............................. 129
2.4.3
Manœuvre des commutateurs rotatifs ......................................................... 129
2.4.4
Manœuvre des auxiliaires de commande à commande mécanique .............. 130
3
Classification ............................................................................................................. 131
3.1
Eléments de contact .......................................................................................... 131
3.2
Auxiliaires de commande .................................................................................. 132
3.3
Appareils pour circuits de commande ................................................................ 132
3.4
Eléments de commutation temporisée ............................................................... 132
3.5
Montage des auxiliaires de commande .............................................................. 132
4
Caractéristiques ........................................................................................................ 132
4.1
Enumération des caractéristiques ...................................................................... 132
4.1.1
Généralités ................................................................................................ 132
4.1.2
Fonctionnement d'un auxiliaire de commande ............................................ 132
4.2
Type de l'appareil pour circuits de commande ou de l'élément de
commutation ..................................................................................................... 133
4.2.1
Nature de l'appareil pour circuit de commande ........................................... 133
4.2.2
Nature des éléments de commutation ......................................................... 133
4.2.3
Nombre de pôles ....................................................................................... 133
4.2.4
Nature du courant ...................................................................................... 133
4.2.5
Milieu de coupure ...................................................................................... 133
4.2.6
Conditions de fonctionnement .................................................................... 133
4.3
Valeurs assignées et valeurs limites pour les éléments de commutation ............ 134
4.3.1
Généralités ................................................................................................ 134
4.3.2
Tensions assignées (d'un élément de commutation) ................................... 134
4.3.3
Courants .................................................................................................... 134
4.3.4
Fréquence assignée .................................................................................. 134
4.3.5
Disponible ................................................................................................. 135
4.3.6
Caractéristiques en conditions normales et anormales de charge ............... 135
4.3.7
Caractéristiques de court-circuit ................................................................. 135
4.4
Catégories d'emploi des éléments de commutation ............................................ 135
4.5
Disponible ......................................................................................................... 136
4.6
Disponible ......................................................................................................... 136
4.7
Disponible ......................................................................................................... 136
4.8
Disponible ......................................................................................................... 136
4.9
Disponible ......................................................................................................... 136
4.10 Séparation électrique des éléments de contact .................................................. 136
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4.11
4.12
5
Grandeurs d'action des auxiliaires automatiques de commande ......................... 136
Auxiliaires automatiques de commande ayant deux éléments de contact ou
plus .................................................................................................................. 136
Informations sur le matériel ....................................................................................... 136
5.1
Nature des informations .................................................................................... 136
5.2
Marquage ......................................................................................................... 137
5.2.1
Généralités ................................................................................................ 137
5.2.2
Identification et marquage des bornes ........................................................ 137
5.2.3
Repères de fonction ................................................................................... 137
5.2.4
Arrêt d'urgence .......................................................................................... 138
5.2.5
Diagramme de fonctionnement ................................................................... 138
5.2.6
Indication de la temporisation ..................................................................... 138
5.3
Instructions d'installation, de fonctionnement et d'entretien ................................ 138
5.4
Informations complémentaires ........................................................................... 139
6
Conditions normales de service, de montage et de transport ...................................... 139
7
6.3.1
Montage des appareils fixés en un seul trou ............................................... 139
Dispositions relatives à la construction et au fonctionnement ..................................... 140
7.1
Dispositions constructives ................................................................................. 140
7.1.1
Généralités ................................................................................................ 140
7.1.2
Matériaux .................................................................................................. 140
7.1.3
Parties transportant le courant et leurs connexions .................................... 141
7.1.4
Distances d'isolement et lignes de fuite ...................................................... 141
7.1.7
Dispositions relatives aux auxiliaires de commande aptes au
sectionnement ........................................................................................... 142
7.1.8
Bornes ....................................................................................................... 142
7.1.14
Appareils de classe II pour circuit de commande ........................................ 142
7.1.15
Exigences pour les appareils pour circuit de commande avec câble
faisant partie intégrante de l'appareil .......................................................... 142
7.2
Dispositions relatives au fonctionnement ........................................................... 142
7.2.3
Propriétés diélectriques ............................................................................. 142
7.2.4
Aptitude à l'établissement et à la coupure dans les conditions normales
et anormales de charge ............................................................................. 143
7.2.5
Courant de court-circuit conditionnel .......................................................... 143
7.2.6
Vacant ....................................................................................................... 143
7.2.7
Exigences supplémentaires pour les auxiliaires de commande aptes au
sectionnement ........................................................................................... 143
7.2.8
Temps de récupération maximum après défaillance .................................... 143
7.3
Compatibilité électromagnétique (CEM) ............................................................. 144
7.3.1
Généralités ................................................................................................ 144
7.3.2
Immunité ................................................................................................... 144
7.3.3
Emission .................................................................................................... 145
8
Essais ....................................................................................................................... 150
8.1
Nature des essais ............................................................................................. 150
8.1.1
Généralités ................................................................................................ 150
8.1.2
Essais de type ........................................................................................... 150
8.1.3
Essais individuels ...................................................................................... 151
8.1.4
Essais sur prélèvement .............................................................................. 151
8.1.5
Essais spéciaux ......................................................................................... 151
8.2
Conformité aux dispositions constructives ......................................................... 151
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8.2.1
Matériaux .................................................................................................. 151
8.2.2
Matériel ..................................................................................................... 152
8.2.3
Enveloppes pour matériel ........................................................................... 152
8.2.4
Propriétés mécaniques et électriques des bornes ....................................... 152
8.2.5
Vérification de l'effort (ou moment) de commande ...................................... 153
8.2.6
Vérification de la limitation de la rotation (d'un commutateur rotatif) ............ 153
8.2.7
Essais de traction, torsion et flexion des conduits métalliques .................... 154
8.3
Fonctionnement ................................................................................................ 154
8.3.1
Séquences d'essais ................................................................................... 154
8.3.2
Conditions générales pour les essais ......................................................... 155
8.3.3
Fonctionnement à vide et dans les conditions de charge normales et
anormales .................................................................................................. 156
8.3.4
Fonctionnement au courant de court-circuit conditionnel ............................. 158
8.4
Essais pour la CEM ........................................................................................... 159
8.4.1
Généralités ................................................................................................ 159
8.4.2
Immunité ................................................................................................... 160
8.4.3
Emission .................................................................................................... 161
8.4.4
Résultats de l'essai et rapport d'essai ........................................................ 161
Annexe A (normative) Caractéristiques électriques assignées suivant les catégories
d'emploi (voir 3.1) ............................................................................................................. 169
Annexe B (normative) Exemple de charges d'essai inductives pour contacts en
courant continu ................................................................................................................. 171
B.1
Généralités ....................................................................................................... 171
B.2
Construction ..................................................................................................... 171
Annexe C (normative) Essais spéciaux – Essais de durabilité .......................................... 173
C.1
Généralités ....................................................................................................... 173
C.1.1
Déclaration de durabilité ............................................................................ 173
C.1.2
Modalités des essais .................................................................................. 173
C.1.3
Critère de défaillance ................................................................................. 174
C.2
Durabilité mécanique ........................................................................................ 174
C.2.1
Généralités ................................................................................................ 174
C.2.2
Modalités de l'essai ................................................................................... 174
C.3
Durabilité électrique .......................................................................................... 174
C.3.1
Généralités ................................................................................................ 174
C.3.2
Conditions d’essai ..................................................................................... 174
Annexe D Disponible ........................................................................................................ 177
Annexe E (normative) Points faisant l'objet d'un accord entre le constructeur et
l'utilisateur ........................................................................................................................ 178
Annexe F (normative) Appareils de classe II pour circuit de commande isolés par
encapsulation Exigences et essais ................................................................................... 179
F.1
Généralités ....................................................................................................... 179
F.2
Termes et définitions ......................................................................................... 179
F.5
Marquage ......................................................................................................... 179
F.7
Exigences fonctionnelles et constructives .......................................................... 180
F.7.1
Choix du compound ................................................................................... 180
F.7.2
Adhérence du compound ........................................................................... 180
F.7.3
Caractéristiques diélectriques .................................................................... 180
F.8
Essais .............................................................................................................. 181
F.8.1
Type d'essais ............................................................................................. 181
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Annexe G (normative) Exigences supplémentaires pour les appareils pour circuits de
commande avec câble faisant partie intégrante de l'appareil ............................................. 183
G.1
Généralités ....................................................................................................... 183
G.2
Termes et définitions ......................................................................................... 183
G.7
Exigences relatives à la construction et aux performances ................................ 183
G.7.1
Exigences relatives à la construction .......................................................... 183
G.7.2
Exigences concernant les performances .................................................... 184
G.8
Essais .............................................................................................................. 184
G.8.1
Généralités ................................................................................................ 184
G.8.2
Essais de type ........................................................................................... 184
G.8.3
Résultats à obtenir ..................................................................................... 185
Annexe H (normative) Exigences complémentaires concernant les éléments de
commutation à semi-conducteurs pour les appareils pour circuits de commande ............... 186
H.1
Généralités ....................................................................................................... 186
H.2
Termes et définitions ......................................................................................... 186
H.3
Classification .................................................................................................... 186
H.3.1
Eléments de commutation à semi-conducteurs ........................................... 186
H.4
Caractéristiques ................................................................................................ 186
H.4.1
Tension assignée ....................................................................................... 186
H.4.2
Catégories d'emploi ................................................................................... 187
H.5
Informations concernant le produit .................................................................... 187
H.7
Dispositions relatives à la construction et au fonctionnement ............................. 187
H.7.1
Dispositions relatives au fonctionnement .................................................... 187
H.7.2
Pouvoir de fermeture dans des conditions anormales et normales .............. 188
H.7.3
Courant de court-circuit conditionnel .......................................................... 188
H.7.4
Compatibilité électromagnétique (CEM) ...................................................... 188
H.8
Essais .............................................................................................................. 188
H.8.1
Essais de type ........................................................................................... 188
H.8.2
Chute de tension (U d ) ................................................................................ 188
H.8.3
Courant minimal de fonctionnement (I m ) .................................................... 189
H.8.4
Courant à l'état bloquant (I r ) ...................................................................... 189
H.8.5
Pouvoirs de fermeture et de coupure .......................................................... 189
H.8.6
Fonctionnement dans les conditions de court-circuit ................................... 189
H.8.7
Vérification de la compatibilité électromagnétique ...................................... 190
Annexe J (normative) Exigences spéciales pour les voyants lumineux et les colonnes
lumineuses ....................................................................................................................... 192
J.1
J.2
J.3
J.4
J.4.1
J.4.2
J.4.3
J.5
J.6
J.7
J.8
J.8.3
J.8.4
Généralités ....................................................................................................... 192
Termes et définitions ......................................................................................... 192
Classification .................................................................................................... 192
Caractéristiques ................................................................................................ 193
Tension assignée d'emploi d'un voyant lumineux ........................................ 193
Puissance thermique assignée d'un voyant lumineux .................................. 193
Valeurs assignées de la lampe ................................................................... 193
Informations sur le matériel ............................................................................... 193
Conditions normales de service, de montage et de transport ............................. 193
Dispositions relatives à la construction et au fonctionnement ............................. 194
Essais .............................................................................................................. 194
Essais des voyants lumineux et des colonnes lumineuses .......................... 194
Chocs et vibrations .................................................................................... 196
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J.8.5
Degré de protection des colonnes lumineuses ............................................ 197
Annexe K (normative) Exigences spéciales pour les auxiliaires de commande à
manœuvre positive d'ouverture ......................................................................................... 198
K.1
Généralités ....................................................................................................... 198
K.2
Termes et définitions ......................................................................................... 198
K.3
Classification .................................................................................................... 198
K.4
Caractéristiques ................................................................................................ 199
K.4.4
Catégorie d'emploi des éléments de commutation ...................................... 199
K.5
Informations sur le matériel ............................................................................... 199
K.5.2
Marquage .................................................................................................. 199
K.5.4
Informations complémentaires .................................................................... 199
K.6
Conditions normales de service, de montage et de transport ............................. 200
K.7
Dispositions relatives à la construction et au fonctionnement ............................. 200
K.8
Essais .............................................................................................................. 201
Annexe L (normative) Exigences spéciales pour les éléments de contacts
mécaniquement liés .......................................................................................................... 204
L.1
Généralités ....................................................................................................... 204
L.2
Termes et définitions ......................................................................................... 204
L.3
Classification .................................................................................................... 204
L.4
Caractéristiques ................................................................................................ 204
L.5
Informations sur le matériel ............................................................................... 205
L.6
Conditions normales de service, de montage et de transport ............................. 205
L.7
Dispositions relatives à la construction et au fonctionnement ............................. 205
L.8
Essais .............................................................................................................. 206
L.8.4
Essai spécial pour les éléments de contact mécaniquement liés ................. 206
Annexe M (normative) Marquage des bornes, nombre distinctif et lettre distinctive
pour les appareils pour circuits de commande ................................................................... 207
M.1
Domaine d’application ....................................................................................... 207
M.2
Règle de marquage des bornes ......................................................................... 207
M.2.1
Généralités ................................................................................................ 207
M.2.2
Chiffre de fonction ..................................................................................... 207
M.2.3
Chiffre d’ordre............................................................................................ 207
M.2.4
Méthode de numérotation ........................................................................... 208
M.3
Nombre distinctif et lettre distinctive .................................................................. 208
M.3.1
Généralités ................................................................................................ 208
M.3.2
Nombre distinctif ........................................................................................ 208
M.3.3
Lettre distinctive ........................................................................................ 208
M.4
Numérotation des bornes .................................................................................. 209
M.5
Contacteurs auxiliaires désignés par la lettre distinctive E ................................. 209
M.6
Contacteurs auxiliaires désignés par les lettres distinctives X, Y ou Z ................ 211
M.6.1
Contacteurs auxiliaires désignés par la lettre distinctive Z .......................... 211
M.6.2
Contacteurs auxiliaires désignés par la lettre distinctive X .......................... 211
M.6.3
Contacteurs auxiliaires désignés par la lettre distinctive Y .......................... 211
Annexe N (normative) Procédure visant à déterminer les données de fiabilité des
appareils électromécaniques dans les circuits de commande utilisés dans des
applications de la sécurité fonctionnelle ............................................................................ 212
N.1
Généralités ....................................................................................................... 212
N.1.1
Vue d’ensemble ......................................................................................... 212
N.1.2
Domaine d'application et objet ................................................................... 212
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N.1.3
Exigences générales .................................................................................. 212
N.2
Termes, définitions et symboles ........................................................................ 212
N.3
Méthode fondée sur les résultats des essais de durabilité ................................. 212
N.3.1
Méthode générale ...................................................................................... 212
N.3.2
Exigences d'essai ...................................................................................... 212
N.3.3
Nombre d'échantillons ................................................................................ 213
N.3.4
Caractérisation d'un mode de défaillance ................................................... 213
N.3.5
Modélisation de Weibull ............................................................................. 213
N.3.6
Durée de vie utile et limite supérieure du taux de défaillance ...................... 213
N.3.7
Données de fiabilité ................................................................................... 213
N.4
Informations relatives aux données ................................................................... 213
N.5
Exemple ........................................................................................................... 213
Bibliographie .................................................................................................................... 214
Figure 1 – Exemples de la méthode recommandée pour représenter un diagramme de
fonctionnement d'un commutateur rotatif ........................................................................... 162
Figure 2 – Manœuvre des boutons-poussoirs .................................................................... 163
Figure 3 – Différence e entre la course résiduelle de l'organe de commande et celle
de l'élément de contact ..................................................................................................... 164
Figure 4 – Exemples d'éléments de contact (schémas) ...................................................... 165
Figure 5 – Circuits d'essai – Auxiliaires de commande multipolaires – Contacts de
même polarité non électriquement séparés ....................................................................... 166
Figure 6 – Circuits d'essai – Auxiliaires de commande multipolaires – Contacts de
polarité opposée et électriquement séparés ...................................................................... 166
Figure 7 – Détails de la charge L d pour des conditions d'essais demandant des
courants d'établissement et de coupure et/ou des facteurs de puissance (ou des
constantes de temps) de valeurs différentes ..................................................................... 167
Figure 8 – Circuit d'essai au courant de court-circuit conditionnel (voir 8.3.4.2) ................. 167
Figure 9 – Limites courant/temps pour circuits d'essai en courant continu (voir
8.3.3.5.4) .......................................................................................................................... 168
Figure 10 – Mesure de la chute de tension au point de contact de l'organe de serrage
ou de la borne .................................................................................................................. 168
Figure B.1 – Construction de la charge pour les contacts à courant continu ....................... 172
Figure C.1 – Circuit normal (voir C.3.2.2) .......................................................................... 176
Figure C.2 – Circuit simplifié (voir C.3.2.2) ........................................................................ 176
Figure F.1 – Isolation par encapsulation ............................................................................ 180
Figure F.2 – Dispositif d'essai ........................................................................................... 182
Figure H.1 – Relation entre U e et U B ................................................................................ 187
Figure H.2 – Exemple de circuit d'essai pour la vérification de la chute de tension,
courant minimal de fonctionnement et courant à l'état bloquant (voir H.8.2, H.8.3 et
H.8.4) ............................................................................................................................... 189
Figure H.3 – Essai de court-circuit (voir H.8.6.1) ............................................................... 190
Figure J.1 – Dimenisons du montage pour le socle de la colonne lumineuse ...................... 194
Figure J.2 – Dimensions du montage pour essais d'échauffement ..................................... 195
Figure K.1 – Vérification de la robustesse du mécanisme transmetteur .............................. 203
Figure L.1 – Exemple de représentation de contacts à fermeture et à ouverture qui
sont mécaniquement liés et un contact à ouverture non lié ................................................ 205
Figure L.2 – Symbole pour un appareil comportant des contacts mécaniquement liés ....... 205
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Tableau 1 – Catégories d'emploi des éléments de commutation ........................................ 135
Tableau 2 – Diamètre du trou de fixation et cotes du logement éventuel d'ergot ................ 139
Tableau 3 – Distances minimales préférentielles entre les centres des trous de fixation .... 140
Tableau 4 – Vérification des pouvoirs de fermeture et de coupure des éléments de
commutation dans les conditions normales correspondant aux catégories d'emploi ........... 146
Tableau 5 – Vérification des pouvoirs de fermeture et de coupure des éléments de
commutation dans les conditions anormales correspondant aux catégories d'emploi ......... 147
Tableau 6 – Conditions d'essai pour l'essai au fil incandescent ......................................... 147
Tableau 7 – Critères d'acceptation .................................................................................... 148
Tableau 8 – Essais d'immunité .......................................................................................... 149
Tableau 9 – Valeurs de l'essai de fonctionnement électrique et de vieillissement des
organes de serrage sans vis ............................................................................................. 161
Tableau A.1 – Exemples de désignation des caractéristiques assignées des contacts
suivant les catégories d'emploi ......................................................................................... 169
Tableau A.2 – Exemples de caractéristiques d'élément de commutation pour 50 Hz
et/ou 60 Hz ....................................................................................................................... 170
Tableau A.3 – Exemples de caractéristiques d'élément de commutation pour courant
continu ............................................................................................................................. 170
Tableau B.1 – Charges en courant continu ........................................................................ 172
Tableau C.1 – Pouvoir de fermeture et de coupure pour les essais de durabilité
électrique ......................................................................................................................... 175
Tableau M.1 – Schémas d’auxiliaires de commande .......................................................... 209
Tableau M.2 – Schémas de contacteurs auxiliaires désignés par la lettre distinctive E ....... 210
Tableau M.3 – Schémas de contacteurs auxiliaires désignés par la lettre distinctive Y ...... 211
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COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
APPAREILLAGE À BASSE TENSION –
Partie 5-1: Appareils et éléments de commutation pour circuits de
commande – Appareils électromécaniques pour circuits de commande
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l’IEC). L’IEC a pour
objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines
de l'électricité et de l'électronique. A cet effet, l’IEC – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de l’IEC"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec l’IEC, participent
également aux travaux. L’IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l’IEC concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l’IEC
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de l’IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l’IEC. Tous les efforts raisonnables sont entrepris afin que l’IEC
s'assure de l'exactitude du contenu technique de ses publications; l’IEC ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l’IEC s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de l’IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l’IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L’IEC elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de l’IEC. L’IEC n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l’IEC, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de l’IEC, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de l’IEC ou de
toute autre Publication de l’IEC, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de l’IEC peuvent faire
l’objet de droits de brevet. L’IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
La Norme internationale IEC 60947-5-1 a été établie par le sous-comité 121A: Appareillage à
basse tension, du comité d'études 121 de l'IEC: Appareillages et ensembles d’appareillages
basse tension.
Cette quatrième édition annule et remplace la troisième édition parue en 2003 et
l'Amendement 1:2009. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition
précédente:
a) mise à jour des références normatives;
b) mise à jour et restructuration des paragraphes du 7.1;
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c) addition des exigences et de l'essai relatif aux matériaux;
d) mise à jour des exigences CEM;
e) clarification des exigences et mise à jour du 8.2;
f)
addition des exigences pour les organes de serrage sans vis;
g) mise à jour des Tableaux 4 et 5 existants;
h) addition des nouveaux Tableaux 6,7, 8 et 9;
i)
addition de la nouvelle Figure 10;
j)
addition de la nouvelle Annexe N.
Le texte de cette norme est issu des documents suivants:
FDIS
Rapport de vote
121A/62/FDIS
121A/76/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette norme.
Cette publication a été rédigée selon les Directives ISO/IEC, Partie 2.
Cette Norme internationale doit être utilisée conjointement avec l'IEC 60947-1.
Les dispositions des règles générales de l'IEC 60947-1 sont applicables à la présente norme
lorsque celle-ci le précise. Les articles, paragraphes, tableaux et figures des règles générales
qui sont ainsi applicables sont identifiés par référence à l'IEC 60947-1, par exemple:
paragraphe 1.2.3, Tableau 4 ou Annexe A de l'IEC 60947-1:2007.
Les différentes pratiques suivantes, à caractère moins permanent, existent dans les pays
indiqués ci-après:
–
7.2.4.1: Pouvoirs de fermeture et de coupure en conditions normales (États-Unis
d'Amérique et Canada)
–
8.3.3.5.2: Circuits d'essai et connexions (États-Unis d'Amérique et Canada)
Une liste de toutes les parties de la série IEC 60947, présentées sous le titre général
Appareillage à basse tension, peut être consultée sur le site web de l'IEC.
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant la date de
stabilité indiquée sur le site web de l’IEC sous "http://webstore.iec.ch" dans les données
relatives à la publication recherchée. A cette date, la publication sera
•
reconduite,
•
supprimée,
•
remplacée par une édition révisée, ou
•
amendée.
Le contenu des corrigenda de juillet 2016 et avril 2020 a été pris en considération dans
cet exemplaire.
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APPAREILLAGE À BASSE TENSION –
Partie 5-1: Appareils et éléments de commutation pour circuits de
commande – Appareils électromécaniques pour circuits de commande
1
Généralités
1.1
Domaine d'application et objet
La présente partie de l'IEC 60947 est applicable aux appareils pour circuits de commande et
aux éléments de commutation destinés à la commande, la signalisation, le verrouillage, etc.,
de l'appareillage.
Elle est applicable aux appareils pour circuits de commande dont la tension assignée ne
dépasse pas 1 000 V en courant alternatif (à une fréquence ne dépassant pas 1 000 Hz) ou
600 V en courant continu.
Toutefois, pour des tensions d'emploi, alternatives ou continues, inférieures à 100 V, voir
4.3.2.2.
La présente norme s'applique à des types déterminés d'appareils pour circuits de commande,
tels que:
•
auxiliaires manuels de commande, par exemple boutons-poussoirs, commutateurs
rotatifs, interrupteurs à pédale, etc.;
•
auxiliaires électromagnétiques de commande, soit temporisés, soit instantanés, par
exemple contacteurs auxiliaires;
•
auxiliaires automatiques de commande, par exemple détecteurs de pression à contacts,
détecteurs de température à contacts (thermostats), programmateurs, etc.;
•
interrupteurs de position, par exemple auxiliaires de commande actionnés par une partie
d'une machine ou d'un mécanisme;
•
matériel de commande associé, par exemple voyants lumineux, etc.
NOTE 1 Un appareil pour circuits de commande comprend un (des) auxiliaire(s) de commande et des appareils
associés, tels que voyant(s) lumineux.
NOTE 2 Un auxiliaire de commande comprend un (des) élément(s) de commutation et un mécanisme
transmetteur.
NOTE 3
Un élément de commutation peut être un élément de contact ou un élément à semi-conducteurs.
Elle s'applique également à des types déterminés d'éléments de commutation associés à
d'autres appareils (dont les circuits principaux font l'objet d'autres normes), tels que:
•
contacts auxiliaires d'un appareil de connexion (par exemple contacteur, disjoncteur, etc.)
qui ne sont pas prévus pour être utilisés exclusivement avec la bobine de cet appareil;
•
contacts de verrouillage de portes d'enveloppes;
•
contacts de circuits de commande d'interrupteurs rotatifs;
•
contacts de circuits de commande de relais de surcharge.
Les contacteurs auxiliaires satisfont également aux exigences et aux essais de l'IEC 609474-1, sauf en ce qui concerne la catégorie d'emploi qui satisfait à la présente norme.
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La présente norme ne prend pas en compte les relais couverts par l'IEC 60255, la série
IEC 61810 ou les dispositifs de commande électrique automatiques à usage domestique et
analogue.
Les exigences relatives aux couleurs des voyants lumineux, boutons-poussoirs, etc., figurent
dans l'IEC 60073 et également dans la publicaiton CIE S 0004/E-2001 de la Commission
Internationale de l'Eclairage (CIE).
La présente norme a pour objet de fixer:
a) les caractéristiques des appareils pour circuits de commande;
b) les qualités électriques et mécaniques requises en ce qui concerne:
1) les différentes fonctions qui doivent être remplies;
2) la signification des caractéristiques assignées et des indications portées sur les
appareils;
3) les essais de vérification des caractéristiques assignées;
c) les conditions de fonctionnement auxquelles doivent répondre les appareils pour circuits
de commande en ce qui concerne:
1) les conditions
enveloppe;
d'environnement y compris
celles concernant le matériel sous
2) les propriétés diélectriques;
3) les bornes.
1.2
Références normatives
Les documents de référence suivants sont indispensables pour l'application du présent
document. Pour les références datées, seule l'édition citée s'applique. Pour les références
non datées, la dernière édition du document de référence s'applique (y compris les éventuels
amendements).
IEC 60068-2-6:2007, Essais d'environnement – Partie 2-6: Essais – Essai Fc: Vibrations
(sinusoïdales)
IEC 60068-2-14:2009, Essais d'environnement – Partie 2-14: Essais – Essai N: Variations de
température
IEC 60068-2-27:2008, Essais d'environnement – Partie 2-27: Essais – Essai Ea et guide –
Chocs
IEC 60068-2-30:2005, Essais d’environnement – Partie 2-30: Essais – Essai Db: Essai
cyclique de chaleur humide (cycle de 12 h + 12 h)
IEC 60073:2002, Principes fondamentaux et de sécurité pour l'interface homme-machine, le
marquage et l'identification – Principes de codage pour les indicateurs et les organes de
commande
IEC 60417-DB:2002 1, Symboles graphiques utilisables sur le matériel
IEC 60617-DB:2012 2, Symboles graphiques pour schémas
___________
1
“DB” fait référence ici à la base de données en ligne de la CEI, disponible à l'adresse: http://www.graphicalsymbols.info/equipment
2
“DB” fait référence là
http://std.iec.ch/iec60617
à
la
base
de
données
en
ligne
de
la
CEI,
disponible
à
l'adresse:
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IEC 60695-2-10:2013, Essais relatifs aux risques du feu – Partie 2-10: Essais au fil
incandescent/chauffant – Appareillage et méthode commune d'essai
IEC 60695-2-11:2014, Essais relatifs aux risques du feu – Partie 2-11: Essais au fil
incandescent/chauffant – Méthode d'essai d'inflammabilité pour produits finis (GWEPT)
IEC 60695-2-12:2010, Essais relatifs aux dangers du feu – Partie 2-12: Essais au fil
incandescent/chauffant – Méthode d'essai d'indice d'inflammabilité au fil incandescent
(GWFI) pour matériaux
IEC 60695-2-12:2010/AMD1:2014
IEC 60947-1:2007, Appareillage
IEC 60947-1:2007/AMD1:2010
IEC 60947-1:2007/AMD2:2014
à
basse
tension
–
Partie
1:
Règles
générales
IEC 60947-4-1:2009, Appareillage à basse tension – Partie 4-1: Contacteurs et démarreurs
de moteurs – Contacteurs et démarreurs électromécaniques
IEC 60947-4-1:2009/AMD1:2012
IEC 60947-5-5:1997, Appareillage à basse tension – Partie 5-5: Appareils et éléments de
commutation pour circuits de commande – Appareils d’arrêt d’urgence électrique à
accrochage mécanique
IEC 60947-5-5:1997/AMD1:2005
IEC 60947-5-5:1997/AMD2:2016
IEC 60999-1:1999, Dispositifs de connexion – Conducteurs électriques en cuivre –
Prescriptions de sécurité pour organes de serrage à vis et sans vis – Partie 1: Prescriptions
générales et particulières pour les organes de serrage pour les conducteurs de 0,2 mm 2 à
35 mm 2 (inclus)
IEC 61000-3-2, Compatibilité électromagnétique (CEM) – Partie 3-2: Limites – Limites pour
les émissions de courant harmonique (courant appelé par les appareils < 16 A par phase)
IEC 61000-3-3, Compatibilité électromagnétique (CEM) – Partie 3-3: Limites – Limitation des
variations de tension, des fluctuations de tension et du papillotement dans les réseaux
publics d'alimentation basse tension, pour les matériels ayant un courant assigné < 16 A par
phase et non soumis à un raccordement conditionnel
IEC 61000-4-2:2008, Compatibilité électromagnétique (CEM) – Partie 4-2: Techniques
d'essai et de mesure – Essai d'immunité aux décharges électrostatiques
IEC 61000-4-3:2006, Compatibilité électromagnétique (CEM) – Partie 4-3: Techniques
d'essai et de mesure – Essai d'immunité aux champs électromagnétiques rayonnés aux
fréquences
radioélectriques
IEC 61000-4-3:2006/AMD1:2007
IEC 61000-4-3:2006/AMD2:2010
IEC 61000-4-4:2012, Compatibilité électromagnétique (CEM) – Partie 4-4: Techniques
d'essai et de mesure – Essais d'immunité aux transitoires électriques rapides en salves
IEC 61000-4-5:2014, Compatibilité électromagnétique (CEM) – Partie 4-5: Techniques d'essai
et de mesure – Essai d'immunité aux ondes de choc
IEC 61000-4-6:2013, Compatibilité électromagnétique (CEM) – Partie 4-6: Techniques d'essai
et de mesure – Immunité aux perturbations conduites, induites par les champs
radioélectriques
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IEC 61000-4-8:2009, Compatibilité électromagnétique (CEM) – Partie 4-8: Techniques
d'essai et de mesure – Essai d'immunité au champ magnétique à la fréquence du réseau
IEC 61000-4-11:2004, Compatibilité électromagnétique (CEM) – Partie 4-11: Techniques
d'essai et de mesure – Essais d'immunité aux creux de tension, coupures brèves et
variations de tension
IEC 61000-4-13:2002, Compatibilité électromagnétique (CEM) – Partie 4-13: Techniques
d'essai et de mesure – Essais d'immunité basse fréquence aux harmoniques et interharmoniques incluant les signaux transmis sur le réseau électrique alternatif
IEC 61000-4-13:2002/AMD1:2009
IEC 61000-4-13:2002/AMD2:2015
IEC 61140:2015, Protection contre les chocs électriques – Aspects communs aux
installations et aux matériels
IEC 61140:2015/AMD1:2004
CISPR 11:2015, Appareils industriels, scientifiques et médicaux – Caractéristiques de
perturbations radioélectriques – Limites et méthodes de mesure
CIE S 004/E-2001, Colours of Light Signals (disponible en anglais seulement)
2
Termes et définitions
Pour les besoins de ce document, les termes et définitions donnés dans l'IEC 60947-1, ainsi
que les suivants s'appliquent.
Références
Index alphabétique des définitions
A
Appareil pour circuits de commande ............................................................................... 2.1.1
Auxiliaire automatique de commande .............................................................................. 2.2.1
Auxiliaire de commande .................................................................................................. 2.1.2
Auxiliaire de commande apte au sectionnement .............................................................. 2.1.3
Auxiliaire à tige guidée .............................................................................................. 2.2.2.19
Auxiliaire à tige libre .................................................................................................. 2.2.2.20
B
Bouton ........................................................................................................................... 2.3.4
Bouton affleurant ......................................................................................................... 2.3.4.1
Bouton «coup de poing» .............................................................................................. 2.3.4.4
Bouton dépassant ........................................................................................................ 2.3.4.3
Bouton «pousser-tirer» ................................................................................................ 2.2.2.3
Bouton-poussoir .......................................................................................................... 2.2.2.1
Bouton-poussoir à accrochage ..................................................................................... 2.2.2.5
Bouton-poussoir à action différée ................................................................................. 2.2.2.9
Bouton-poussoir à clef ................................................................................................. 2.2.2.7
Bouton-poussoir couvert ............................................................................................ 2.2.2.11
Bouton-poussoir à garde ............................................................................................ 2.2.2.12
Bouton-poussoir guidé ............................................................................................... 2.2.2.14