EN 60947-5-1:2004

SLOVENSKI STANDARD
01-februar-2005
1DGRPHãþD
SIST EN 60947-5-1:2000
SIST EN 60947-5-1:2000/A1:2000
SIST EN 60947-5-1:2000/A12:2000
SIST EN 60947-5-1:2000/A2:2001
Nizkonapetostne stikalne in krmilne naprave - 5-1. del: Krmilne naprave in stikalni
elementi - Elektromehanske krmilne naprave (vsebuje popravka AC:2004 in
AC:2005)
Low-voltage switchgear and controlgear - Part 5-1: Control circuit devices and switching
elements - Electromechanical control circuit devices
Niederspannungsschaltgeräte -- Teil 5-1: Steuergeräte und Schaltelemente -
Elektromechanische Steuergeräte
Appareillage à basse tension -- Partie 5-1: Appareils et éléments de commutation pour
circuits de commande - Appareils électromécaniques pour circuits de commande
Ta slovenski standard je istoveten z: EN 60947-5-1:2004
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60947-5-1
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2004
ICS 29.120.40; 29.130.20 Supersedes EN 60947-5-1:1997 + A1:1999 + A12:1999 + A2:2000
Incorporates Corrigendum November 2004

English version
Low-voltage switchgear and controlgear
Part 5-1: Control circuit devices and switching elements –
Electromechanical control circuit devices
(IEC 60947-5-1:2003)
Appareillage à basse tension Niederspannungsschaltgeräte
Partie 5-1: Appareils et éléments Teil 5-1: Steuergeräte und Schaltelemente –
de commutation pour circuits Elektromechanische Steuergeräte
de commande – (IEC 60947-5-1:2003)
Appareils électromécaniques
pour circuits de commande
(CEI 60947-5-1:2003)
This European Standard was approved by CENELEC on 2004-05-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60947-5-1:2004 E
Foreword
The text of document 17B/1297/FDIS, future edition 3 of IEC 60947-5-1, prepared by SC 17B, Low-
voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 60947-5-1 on 2004-05-01.
This European Standard supersedes EN 60947-5-1:1997 + A1:1999 + A12:1999 + A2:2000.
This European Standard should be used in conjunction with EN 60947-1:1999.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-02-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-02-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive(s). See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.
The contents of the corrigendum of November 2004 have been included in this copy.
__________
Endorsement notice
The text of the International Standard IEC 60947-5-1:2003 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 60947-5-1:2004
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-441 1984 International Electrotechnical Vocabulary - -
(IEV)
Chapter 441: Switchgear, controlgear and
fuses
A1 2000 - -
IEC 60050-446 1983 Chapter 446: Electrical relays - -

IEC 60068-2-6 1995 Environmental testing EN 60068-2-6 1995
+ corr. March 1995 Part 2: Tests - Test Fc: Vibration
(sinusoidal)
IEC 60068-2-14 1984 Part 2: Tests - Test N: Change of
temperature
+ A1 1986 EN 60068-2-14 1999
IEC 60068-2-27 1987 Part 2: Tests - Test Ea and guidance: EN 60068-2-27 1993
Shock
IEC 60068-2-30 1980 Part 2: Tests - Test Db and guidance:
Damp heat, cyclic (12 + 12 hour cycle)
+ A1 1985 EN 60068-2-30 1999
IEC 60073 2002 Basic and safety principles for man- EN 60073 2002
machine interface, marking and
identification - Coding principles for
indicators and actuators
IEC 60112 2003 Method for the determination of the proof EN 60112 2003
and the comparative tracking indices of
solid insulating materials
IEC 60255 Series Electrical relays EN 60255 Series

IEC 60617 Series Graphical symbols for diagrams EN 60617 Series

1)
IEC 60947-1 1999 Low-voltage switchgear and controlgear EN 60947-1 1999
(mod) Part 1: General rules
A1 2000 A1 2000
A2 2001 A2 2001
1)
EN 60947-1:1999 is superseded by EN 60947-1:2004, which is based on IEC 60947-1:2004.

Publication Year Title EN/HD Year
IEC 60947-4-1 2000 Part 4-1: Contactors and motor-starters - EN 60947-4-1 2001
Electromechanical contactors and motor-
starters
IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
A1 1998 A1 1998
A2 2000 A2 2001
IEC 61000-4-3 2002 Part 4-3: Testing and measurement EN 61000-4-3 2002
techniques - Radiated, radio-frequency,
electromagnetic field immunity test

IEC 61000-4-4 1995 Part 4-4: Testing and measurement EN 61000-4-4 1995
techniques - Electrical fast transient/burst
immunity test
A1 2000 A1 2001
A2 2001 A2 2001
IEC 61000-4-5 1995 Part 4-5: Testing and measurement EN 61000-4-5 1995
techniques - Surge immunity test
A1 2000 A1 2001
IEC 61000-4-6 1996 Part 4-6: Testing and measurement EN 61000-4-6 1996
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
A1 2000 A1 2001
IEC 61000-4-8 1993 Part 4-8: Testing and measurement EN 61000-4-8 1993
techniques - Power frequency magnetic
field immunity test
A1 2000 A1 2001
IEC 61000-4-11 1994 Part 4-11: Testing and measurement EN 61000-4-11 1994
techniques - Voltage dips, short
interruptions and voltage variations
immunity tests
A1 2000 A1 2001
IEC 61000-4-13 2002 Part 4-13: Testing and measurement EN 61000-4-13 2002
techniques - Harmonics and
interharmonics including mains signalling
at a.c. power port, low frequency
immunity tests
IEC 61140 2001 Protection against electric shock - EN 61140 2002
Common aspects for installation and
equipment
CISPR 11 (mod) 1997 Industrial, scientific and medical (ISM) EN 55011 1998
radio-frequency equipment - Radio
disturbance characteristics - Limits and
methods of measurement
A1 1999 A1 1999
- 5 - EN 60947-5-1:2004
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant essential requirements as given in Article 4 of the EC Directive 89/336/EC.
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive[s] concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling
within the scope of this standard.
___________
Corrigendum to EN 60947-5-1:2004
English version
___________
NOTE This corrigendum includes and replaces the corrigendum November 2004.

Foreword
Replace dow by:
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-05-01
the two paragraphs following the implementation dates by:
Replace
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of EC Directive(s).
See Annex ZZ.
Annexes ZA and ZZ have been added by CENELEC.

the following Annex ZZ:
Add
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all relevant
essential requirements as given in Article 4 of the EC Directive 89/336/EC.
Compliance with this standard provides one means of conformity with the specified essential requirements of
the Directive[s] concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling within the
scope of this standard.
___________
July 2005
NORME CEI
INTERNATIONALE
IEC
60947-5-1
INTERNATIONAL
Troisième édition
STANDARD
Third edition
2003-11
Appareillage à basse tension –
Partie 5-1:
Appareils et éléments de commutation
pour circuits de commande –
Appareils électromécaniques pour circuits
de commande
Low-voltage switchgear and controlgear –
Part 5-1:
Control circuit devices and switching elements –
Electromechanical control circuit devices
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électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
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CODE PRIX
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Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60947-5-1 © IEC:2003 – 3 –
CONTENTS
FOREWORD . 9

1 General.13
1.1 Scope and object .13
1.2 Normative references.15
2 Definitions.19
2.1 Basic definitions.23
2.2 Control switches.23
2.3 Parts of control switches .29
2.4 Operation of control switches .33
3 Classification.39
3.1 Contact elements.39
3.2 Control switches.39
3.3 Control circuit devices.39
3.4 Time delay switching elements.39
3.5 Control switch mounting.41
4 Characteristics.41
4.1 Summary of characteristics.41
4.2 Type of control circuit device or switching element.41
4.3 Rated and limiting values for switching elements .43
4.4 Utilization categories for switching elements .47
4.5 Vacant.47
4.6 Vacant.47
4.7 Vacant.47
4.8 Vacant.47
4.9 Switching overvoltages.47
4.10 Electrically separated contact elements .47
4.11 Actuating quantities for pilot switches .47
4.12 Pilot switches having two or more contact elements.49
5 Product information.49
5.1 Nature of information.49
5.2 Marking.49
5.3 Instructions for installation, operation and maintenance .53
5.4 Additional information.53
6 Normal service, mounting and transport conditions .53
7 Constructional and performance requirements .55
7.1 Constructional requirements.55
7.2 Performance requirements.59
7.3 Electromagnetic compatibility (EMC).61
8 Tests.67
8.1 Kinds of test.67
8.2 Compliance with constructional requirements.69
8.3 Performance.69

60947-5-1 © IEC:2003 – 5 –
Annex A (normative) Electrical ratings based on utilization categories (see 3.1).95
Annex B (normative) Example of inductive test loads for d.c. contacts .99
Annex C (normative) Special tests – Durability tests .103
Annex D (normative) Clearances and creepage distances of control circuit devices .111
Annex E (normative) Items subject to agreement between manufacturer and user .117
Annex F (normative) Class II control circuit devices insulated by encapsulation
Requirements and tests .119
Annex G (normative) Additional requirements for control circuit devices with integrally
connected cables .127
Annex H (normative) Additional requirements for semiconductor switching elements
for control circuit devices .133
Annex J (normative) Special requirements for indicator lights and indicating towers.149
Annex K (normative) Special requirements for control switches with direct opening
action.161
Annex L (normative) Special requirements for mechanically linked contact elements .173

Figure 1 – Examples of the recommended method for drawing an operating diagram of
a rotary switch.41
Figure 2 – Operation of push-buttons .83
Figure 3 – Difference e between the over-travel of the actuator and that of the contact
element.85
Figure 4 – Examples of contact elements (schematic sketches) .87
Figure 5 – Test circuits for multi-pole control switches – Contacts of same polarity, not
electrically separated .89
Figure 6 – Test circuits for multi-pole control switches – Contacts of opposite polarity,
and electrically separated .89
Figure 7 – Load L details for test conditions requiring different values of make and
d
break current and/or power factor (time constant) .91
Figure 8 – Test circuit, conditional short-circuit current (see 8.3.4.2).93
Figure 9 – Current/time limits for d.c. test loads (see 8.3.3.5.3).93
Figure B.1 – Construction of load for d.c. contacts .101
Figure C.1 – Normal circuit (see C.3.2.1) .109
Figure C.2 – Simplified circuit (see C.3.2.1) .109
Figure F.1 – Insulation by encapsulation .121
Figure F.2 – Test apparatus .123
Figure H.1 – Relationship between U and U .135
e B
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) .139
Figure H.3 – Short-circuit testing (see H.8.6.1).141
Figure K.1 – Verification of robustness of the actuating system.171

60947-5-1 © IEC:2003 – 7 –
Figure L.1 – Example of representation of NO and NC contacts which are mechanically
linked and NC non-linked contact .175
Figure L.2 – Symbol for device containing mechanically linked contacts.175

Table 1 – Utilization categories for switching elements.47
Table 2 – Mounting hole diameter and dimensions of the key recess (if any).53
Table 3 – Preferred minimum distances between centres of mounting holes .55
Table 4 – Verification of making and breaking capacities of switching elements under
normal conditions corresponding to the utilization categories .63
Table 5 – Verification of making and breaking capacities of switching elements under
abnormal conditions corresponding to the utilization categories .65
Table A.1 – Examples of contact rating designation based on utilization categories .95
Table A.2 – Examples of semiconductors switching element ratings for 50 Hz and/or 60 Hz 97
Table A.3 – Examples of semiconductors switching element ratings for d.c. .97
Table B.1 – DC loads .101
Table C.1 – Making and breaking conditions for electrical durability .107
Table D.1 – Clearances and creepage distances.115
Table H.1 – Immunity tests.143

60947-5-1 © IEC:2003 – 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 non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60947-5-1 has been prepared by subcommittee 17B: Low-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
This third edition of IEC 60947-5-1 cancels and replaces the second edition, published in
1997, amendment 1 (1999) and amendment 2 (1999).
The document 17B/1297/FDIS, circulated to the National Committees as amendment 3, led to
the publication of this new edition.

60947-5-1 © IEC:2003 – 11 –
The text of this standard is based on the following documents:
FDIS Report on voting
17B/1297/FDIS 17B/1309/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 International Standard should be used in conjunction with IEC 60947-1.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be:
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
60947-5-1 © IEC:2003 – 13 –
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 note 2 of 4.3.1.1.
This standard applies to specific types of control circuit devices such as:
– manual control switches, for example pushbuttons, rotary switches, foot switches, etc.;
– electromagnetically operated control switches, either time-delayed or instantaneous, for
example contactor relays;
– pilot switches, for example pressure switches, temperature sensitive switches (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.
NOTE 1 A control circuit device includes (a) control switch(es) and associated devices such as (an) indicator
light(s).
NOTE 2 A control switch includes (a) switching element(s) and an actuating system.
NOTE 3 A switching element may 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.

60947-5-1 © IEC:2003 – 15 –
Contactor relays shall also meet 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 automatic electrical control
devices for household and similar purposes.
The colour requirements of indicator lights, pushbuttons, etc., are found in IEC 60073 and
also in publication 2 of the International 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 referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60050(441):1984, International Electrotechnical Vocabulary (IEV) – Chapter 441:
Switchgear, controlgear and fuses
Amendment 1 (2000)
IEC 60050(446):1983, International Electrotechnical Vocabulary (IEV) – Chapter 446:
Electrical relays
IEC 60068-2-6:1995, Environmental testing – Part 2: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-14:1984, Environmental testing – Part 2: Tests – Test N: Change of temperature
Amendment 1 (1986)
IEC 60068-2-27:1987, Environmental testing – Part 2: Tests – Test Ea and guidance: Shock
IEC 60068-2-30:1980, Environmental testing – Part 2: Tests – Test Db and guidance: Damp
heat, cyclic (12 + 12 hour cycle)
Amendment 1 (1985)
IEC 60073:2002, Basic and safety principles for man-machine interface, marking and
identification – Coding principles for indications and actuators

60947-5-1 © IEC:2003 – 17 –
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
IEC 60617 (all parts), Graphical symbols for diagrams
IEC 60947-1:1999, Low-voltage switchgear and controlgear – Part 1: General rules
Amendment 1 (2000)
Amendment 2 (2001)
IEC 60947-4-1:2000, Low-voltage switchgear and controlgear – Part 4-1: Contactors and
motor-starters – Electromechanical contactors and motor-starters
IEC 61000-4-2:1995, Electromagnetic compatibility (EMC) – Part 4-2: Testing and measure-
ment techniques – Electrostatic discharge immunity test
Amendment 1 (1998)
Amendment 2 (2000)
IEC 61000-4-3:2002, Electromagnetic compatibility (EMC) – Part 4-3: Testing and measure-
ment techniques – Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:1995, Electromagnetic compatibility (EMC) – Part 4: Testing and measurement
techniques – Section 4: Electrical fast transient/burst immunity test
Amendment 1 (2000)
Amendment 2 (2001)
IEC 61000-4-5:1995, Electromagnetic compatibility (EMC) – Part 4-5: Testing and measure-
ment techniques – Surge immunity tests
Amendment 1 (2000)
IEC 61000-4-6:1996, Electromagnetic compatibility (EMC) – Part 4-6: Testing and measure-
ment techniques – Immunity to conducted disturbances, induced by radio-frequency fields
Amendment 1 (2000)
IEC 61000-4-8:1993, Electromagnetic compatibility (EMC) – Part 4-8: Testing and measure-
ment techniques – Power frequency magnetic field immunity test
Amendment 1 (2000)
IEC 61000-4-11:1994, Electromagnetic compatibility (EMC) – Part 4-11: Testing and measure-
ment 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 measure-
ment techniques – Harmonics and interharmonics including mains signalling at a.c. power
port, low-frequency immunity tests
IEC 61140:2001, Protection against electric shock – Common aspects for installation and
equipment
CISPR 11:1997, Industrial, scientific and medical (ISM) radio-frequency equipment –
Electromagnetic disturbance characteristics – Limits and methods of measurement
Amendment 1 (1999)
60947-5-1 © IEC:2003 – 19 –
2 Definitions
For the purposes of this part of IEC 60947 the definitions of IEC 60947-1 and the following
additions 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

F
Fixed delay (of a contact element) . .2.4.1.3
Flush-button . .2.3.4.1
Foot-switch (pedal) . .2.2.2.21
Free push-button . .2.2.2.13

G
Guided push-button . .2.2.2.14

I
Illuminated push-button . .2.2.2.10
Independent (snap) action contact element . .2.3.3.8
Instantaneous contactor relay . .2.2.1.1

60947-5-1 © IEC:2003 – 21 –
J
Joy stick . .2.2.2.19

K
Key-operated push-button . .2.2.2.7
Key-operated rotary switch.2.2.2.16

L
Latched position . .2.4.3.5
Latched push-button . .2.2.2.5
Limited drive . .2.4.4.5
Limited movement rotary switch . .2.2.2.17
Locating mechanism (of a rotary switch) . .2.3.5
Locked position . .2.4.3.6
Locked push-button . .2.2.2.6

M
Make-contact element . . .2.3.3.3
Minimum actuating force (or moment) . .2.4.4.7
Minimum starting force (or moment) . .2.4.4.6
Mushroom button . .2.3.4.4

O
Operating diagram . .2.4.3.7
Operating value . .2.4.2.2
Over-travel of the actuator . .2.4.4.2
Over-travel of the contact element . .2.4.4.9

P
Pilot switches . .2.2.1
Position of rest . .2.4.3.2
Position switch . .2.2.1.3
Positive drive . .2.4.4.4
Pre-travel of the actuator . .2.4.4.1
Pre-travel of the contact element . .2.4.4.8
Programmer . .2.2.1.4
Pull-button . .2.2.2.2
Pulse (fleeting) contact element . .2.3.3.6
Push-button . .2.2.2.1
Push-pull button . .2.2.2.3

R
Recessed button . .2.3.4.2
Return value . .2.4.2.3
Rotary control switch . .2.2.2.15
Rotary button (selector switch) . .2.2.2.4

S
Semiconductor element . .2.3.2
Shrouded push-button . .2.2.2.12
Single gap contact element . .2.3.3.1
Switching element .
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