SIST EN 62019:2000
(Main)Electrical accessories - Circuit-breakers and similar equipment for household use - Auxiliary contact units
Electrical accessories - Circuit-breakers and similar equipment for household use - Auxiliary contact units
This International Standard applies to auxiliary contact units associated (or intended to be
associated) with circuit-breakers for overcurrent protection, and with residual current operated
circuit-breakers with or without integral overcurrent protection for household and similar
installations, having a rated voltage not exceeding 440 V a.c. and 250 V d.c., and a rated
current not exceeding 10 A.
NOTE 1 – These requirements may also be used as guidance for auxiliary contacts units intended to be assembled
with other switching devices for household and similar installations.
NOTE 2 – It is recommended that the advice of the manufacturer be sought concerning any application with low
level energy appliances (low level values of current and/or voltage.) For low-energy contacts, specific
recommendations are given in IEC 60947-5-4.
The object of this standard is to state
a) the characteristics of the auxiliary contact units;
b) their 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 auxiliary contact units with respect to
1) environmental conditions, including those of enclosed equipment;
2) dielectric properties;
3) terminals;
4) safety of use.
Elektrisches Installationsmaterial - Schutzschalter und ähnliche Geräte für Hausinstallationen - Hilfsschalter
Petit appareillage électrique - Disjoncteurs et appareillage similaire pour usages domestiques - Blocs de contacts auxiliaires
S'applique aux blocs de contacts auxiliaires associés (ou destinés à être associés) aux disjoncteurs pour la protection contre les surintensités et aux dispositifs de coupure à courant différentiel résiduel avec ou sans protection contre les surintensités incorporée pour installations domestiques et analogues, ayant une tension assignée qui ne dépasse pas 440 V en courant alternatif et 250 V en courant continu, et un courant assigné qui ne dépasse pas 10 A.
Electrical accessories - Circuit-breakers and similar equipment for household use - Auxiliary contact units (IEC 62019:1999)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 62019:2000
01-april-2000
Electrical accessories - Circuit-breakers and similar equipment for household use
- Auxiliary contact units (IEC 62019:1999)
Electrical accessories - Circuit-breakers and similar equipment for household use -
Auxiliary contact units
Elektrisches Installationsmaterial - Schutzschalter und ähnliche Geräte für
Hausinstallationen - Hilfsschalter
Petit appareillage électrique - Disjoncteurs et appareillage similaire pour usages
domestiques - Blocs de contacts auxiliaires
Ta slovenski standard je istoveten z: EN 62019:1999
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
SIST EN 62019:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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NORME CEI
INTERNATIONALE IEC
62019
INTERNATIONAL
Première édition
STANDARD
First edition
1999-02
Petit appareillage électrique –
Disjoncteurs et appareillage similaire
pour usages domestiques – Blocs de contacts
auxiliaires
Electrical accessories –
Circuit-breakers and similar equipment
for household use – Auxiliary contact units
IEC 1999 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photo-copie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
CODE PRIX
Commission Electrotechnique Internationale
V
PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue
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62019 © IEC:1999 – 3 –
CONTENTS
Page
FOREWORD . 5
Clause
1 Scope and object . 7
2 Normative references.7
3 Definitions.9
4 Classification.11
5 Characteristics.11
5.1 Type of auxiliary contact unit . 11
5.2 Rated values of auxiliary contacts . 13
5.3 Performance under normal and abnormal load conditions . 13
5.4 Utilization categories of auxiliary contacts. 15
5.5 Electrically separated contact elements . 15
6 Marking and other information . 15
6.1 Marking.15
6.2 Terminal identification.17
6.3 Instructions for installation and operation. 17
7 Standard conditions for operation in service. 17
8 Requirements for construction and operation . 17
8.1 Constructional requirements.17
8.2 Performance requirements.23
8.3 Test device of the auxiliary contact unit . 23
8.4 Correct operation of the main switching device . 25
8.5 Electromagnetic compatibility.25
9 Tests.25
9.1 Kinds of test. 25
9.2 Verification of compliance with constructional requirements . 25
9.3 Performance.27
9.4 Tests of creepage distances and clearances for electronic circuits. 35
9.5 Requirements for capacitors and specific resistors and inductors used in
electronic circuits . 39
Annex A (normative) Determination of clearances and creepage distances. 53
Annex B (informative) Contact rating based on utilization categories . 59
Annex C (informative) Example of inductive loads for tests of d.c. contacts . 61
Annex D (informative) Bibliography . 67
Figures. 43
Table 1 – Utilization categories for auxiliary contacts . 15
Table 2 – Clearances and creepage distances . 21
Table 3 – Additional test sequences for auxiliary contact units already fully tested together
with one kind of main switching device. 27
Table 4 – Verification of making and breaking capacities of auxiliary contact
units under normal conditions corresponding to the utilization categories. 31
Table 5 – Verification of making and breaking capacities of auxiliary contact units
under abnormal conditions corresponding to the utilization categories . 33
Table 6 – Maximum permissible temperatures under abnormal conditions . 41
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62019 © IEC:1999 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL ACCESSORIES –
CIRCUIT-BREAKERS AND SIMILAR EQUIPMENT
FOR HOUSEHOLD USE –
AUXILIARY CONTACT UNITS
FOREWORD
1) The IEC (International Electrotechnical Commission) is a world-wide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62019 has been prepared by subcommittee 23E: Circuit-breakers
and similar equipment for household use, of IEC technical committee 23: Electrical accessories.
The text of this standard is based on the following documents:
FDIS Report on voting
23E/363/FDIS 23E/366/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.
Annex A forms an integral part of this standard.
Annexes B, C and D are for information only.
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62019 © IEC:1999 – 7 –
ELECTRICAL ACCESSORIES –
CIRCUIT-BREAKERS AND SIMILAR EQUIPMENT
FOR HOUSEHOLD USE –
AUXILIARY CONTACT UNITS
1 Scope and object
This International Standard applies to auxiliary contact units associated (or intended to be
associated) with circuit-breakers for overcurrent protection, and with residual current operated
circuit-breakers with or without integral overcurrent protection for household and similar
installations, having a rated voltage not exceeding 440 V a.c. and 250 V d.c., and a rated
current not exceeding 10 A.
NOTE 1 – These requirements may also be used as guidance for auxiliary contacts units intended to be assembled
with other switching devices for household and similar installations.
NOTE 2 – It is recommended that the advice of the manufacturer be sought concerning any application with low
level energy appliances (low level values of current and/or voltage.) For low-energy contacts, specific
recommendations are given in IEC 60947-5-4.
The object of this standard is to state
a) the characteristics of the auxiliary contact units;
b) their 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 auxiliary contact units with respect to
1) environmental conditions, including those of enclosed equipment;
2) dielectric properties;
3) terminals;
4) safety of use.
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this International Standard. For dated references, subsequent
amendments to, or revisions of, any of these publications do not apply. However, parties to
agreements based on this International Standard are encouraged to investigate the possibility
of applying the most recent editions of the normative documents indicated below. For undated
references, the latest edition of the normative document referred to applies. Members of IEC
and ISO maintain registers of currently valid International Standards.
IEC 60050(441):1984, International Electrotechnical Vocabulary (IEV) – Chapter 441: Switchgear,
controlgear and fuses
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62019 © IEC:1999 – 9 –
IEC 60065:1998, Audio, video and similar apparatus – Safety requirements
IEC 60249-2 (all specifications), Base materials for printed circuits – Part 2: Specifications
IEC 60384-14:1993, Fixed capacitors for uses in electronic equipment – Part 14. Sectional
specification: Fixed capacitors for electromagnetic interference suppression and connection to
the supply mains
IEC 60617 (all parts), Graphical symbols for diagrams
IEC 60664-3:1992, Insulation coordination for equipment within low-voltage systems – Part 3:
Use of coating to achieve insulation coordination of printed board assemblies
IEC 60898:1995, Electrical accessories – Circuit-breakers for overcurrent protection for
household and similar installations
IEC 60998-2-2:1991, Connecting devices for low voltage circuits for household and similar
purposes – Part 2-2: Particular requirements for connecting devices as separate entities with
screwless-type clamping units
IEC 60947-5-1:1997, Low-voltage switchgear and controlgear – Part 5: Control circuit devices
and switching elements – Section one: Electromechanical control circuit devices
IEC 60947-5-4:1996, Low-voltage switchgear and controlgear – Part 5: Control circuit devices
and switching elements – Section 4: Methods of assessing the performance of low-energy
contacts. Special tests
IEC 61008-1:1996, Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses (RCCBs) – Part 1: General rules
IEC 61009-1:1996, Residual current operated circuit-breakers with integral overcurrent
protection for household and similar uses (RCBOs) – Part 1: General rules
IEC 61210:1993, Connecting devices – Flat quick-connect terminations for electrical copper
conductors – Safety requirements
ISO 306:1994, Plastics – Thermoplastic materials – Determination of Vicat softening temperature
(VST)
3 Definitions
For the purpose of this International Standard, the following definitions apply.
3.1
auxiliary contact
contact included in an auxiliary circuit and mechanically operated by the switching device
[IEV 441-15-10]
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62019 © IEC:1999 – 11 –
3.2
auxiliary contact unit
unit containing one or more control and/or auxiliary contacts mechanically operated by a main
switching device
NOTE – The main switching device may be a circuit-breaker, RCCB, RCBO, switch, etc.
3.3
contact element (of an auxiliary contact)
structural part, fixed and movable, conducting or insulating, of an auxiliary contact necessary to
close and open one single conducting path of the auxiliary contact unit [IEV 441-15-10, modified]
NOTE – The contact element and the actuating system may form an indivisible unit, but frequently one or more
contact elements may be combined with one or more actuating system(s).
3.4
mini-gap contact element
contact element having a distance between contacts in the open position between 1,2 mm and
3 mm
4 Classification
Contact elements may be classified as follows.
4.1 According to the utilization categories (see table 1 of 5.4)
4.2 According to the electrical ratings based on utilization categories (see table 4)
4.3 According to one of the following constructions (see figure 1)
4.3.1 Form A – Single-gap make-contact element
4.3.2 Form B – Single-gap break-contact element
4.3.3 Form C – Single-gap make-break three terminal change-over contact element
4.3.4 Other types (see note 1)
4.4 According to the suitablility for PELV and SELV circuits
NOTE 1 – Other types are described in figure 1. (See also clause 3 and figure 4 of IEC 60947-5-1).
NOTE 2 – Distinction is made between make before break (overlap) change-over contact elements where the two
circuits are both closed for a part of the travel of the moving contacts from one position to the other, and break
before make (non-overlap) change-over contact elements where the two circuits are both open for a part of the
travel of the moving contacts from one position to the other. Unless otherwise stated, change-over contact elements
are break before make.
5 Characteristics
5.1 Type of auxiliary contact unit
For the type of auxiliary contact unit, the following shall be stated:
a) number of poles;
b) kind of current: a.c. and/or d.c.;
c) method of operation: indirectly by means of the main switching device.
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62019 © IEC:1999 – 13 –
5.2 Rated values of auxiliary contacts
The rated values of auxiliary contacts shall be stated in accordance with 5.2.1 to 5.2.3.
5.2.1 Rated voltages
An auxiliary contact is defined by the following rated voltages.
5.2.1.1 Rated operational voltage (U )
e
A rated operational voltage of an auxiliary contact is a value of voltage which, combined with a
rated operational current, determines the application of the auxiliary contact unit and to which
the relevant tests and the utilization categories are referred.
5.2.1.2 Rated insulation voltage (U )
i
The rated insulation voltage of an auxiliary contact unit is the voltage value to which dielectric
test voltage and creepage distances are referred. In no case shall the maximum value of the
rated operational voltage exceed that of the rated insulation voltage.
5.2.2 Rated operational current (I )
e
The rated operational current(s) of an auxiliary contact is (are) stated by the manufacturer and
take(s) into account the relevant values of the rated operational voltage and the rated
frequency, the kind of current, and the utilization category.
5.2.3 Rated frequency
The supply frequency for which an auxiliary contact is designed and to which the other
characteristic values correspond.
NOTE – The same auxiliary contact may be rated for both a.c. and d.c and be assigned a number or a range of
rated frequencies.
5.3 Performance under normal and abnormal load conditions
5.3.1 Making and breaking capacities under normal conditions
An auxiliary contact shall comply with the requirements given in table 4 corresponding to the
assigned utilization category under normal conditions.
NOTE – For an auxiliary contact to which a utilization category is assigned, it is not necessary to specify separately
a making and breaking capacity.
5.3.2 Making and breaking capacities under abnormal conditions
An auxiliary contact shall comply with the requirements given in table 5 corresponding to the
assigned utilization category under abnormal conditions.
NOTE – Abnormal conditions may be due, for example, to a blocked open electromagnet or a blocked motor.
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62019 © IEC:1999 – 15 –
5.3.3 Rated conditional short-circuit current
The rated conditional short-circuit current of an auxiliary contact is the value of prospective
current stated by the manufacturer which the auxiliary contact, protected by a short-circuit
protective device (SCPD) specified by the manufacturer, can withstand satisfactorily for the
operating time of the SCPD under the specified short-circuit conditions.
5.4 Utilization categories of auxiliary contacts
The standardized utilization categories are given in table 1.
Table 1 – Utilization categories for auxiliary contacts
Kind of current Typical application
Category
Alternating current AC-12 Control of resistive loads
AC-13 Control of solid state loads with transformer isolation
AC-14 Control of small electromagnetic loads (≤ 72 VA)
AC-15
Control of electromagnetic loads (> 72 VA)
Direct current DC-12 Control of resistive loads
DC-13 Control of electromagnets
DC-14 Control of electromagnetic loads having economy resistors
in circuit
Examples of contact ratings according to utilization categories are given in annex B.
5.5 Electrically separated contact elements
The manufacturer shall state whether or not the contact elements of an auxiliary contact unit are
electrically separated.
NOTE – Electrically separated contact elements (see IEV 441-15-24) are contact elements belonging to the same
auxiliary contact unit, but are adequately insulated from each other so that they can be connected into electrically
separated circuits (for example, downstream of an isolating transformer, with SELV or PELV supply).
6 Marking and other information
6.1 Marking
Auxiliary contact units shall be marked with
a) manufacturer's name or trade mark;
b) catalogue number.
Furthermore, the following indications shall either be marked on the device or given in the
manufacturer's instruction sheet:
c) utilization category, for example AC-14;
d) rated operational voltage(s) (U );
e
e) rated operational current(s) (I );
e
f) rated insulation voltage (U ), if higher than the rated operational voltage (U );
i e
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62019 © IEC:1999 – 17 –
g) rated conditional short-circuit current, if less than 1 000 A;
h) type and maximum ratings of short-circuit protective device;
i) rated frequency (or frequencies) (see 5.2.3), if different from 50/60 Hz;
j) symbol "m" for mini-gap construction, if applicable;
k) wiring diagram, unless the correct mode of connection is evident;
l) degree of protection, if different from IP20;
m) kind of change-over element, if applicable: make before break (overlap) or break before
make (non-overlap).
Marking on the device shall be indelible and easily legible, and shall not be placed on screws
and removable washers.
6.2 Terminal identification
Terminals shall be clearly and permanently identified in accordance with IEC 60445.
The protective earth terminal shall be identified by the symbol .
6.3 Instructions for installation and operation
The manufacturer shall specify in his literature the conditions, if any, for installation and
operation of the auxiliary contact unit.
The manufacturer shall declare in his literature the range of operational currents according to
the range of operational voltages.
7 Standard conditions for operation in service
The relevant clause of the standard of the main switching device applies, for example
a) clause 7 of IEC 60898 for circuit-breakers;
b) clause 7 of IEC 61008-1 for RCCBs;
c) clause 7 of IEC 61009-1 for RCBOs.
8 Requirements for construction and operation
8.1 Constructional requirements
8.1.1 Screws, current-carrying parts and connections
The relevant subclause of the standard of the main switching device applies, for example
a) 8.1.4 of IEC 60898 for circuit-breakers;
b) 8.1.4 of IEC 61008-1 for RCCBs;
c) 8.1.4 of IEC 61009-1 for RCBOs.
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8.1.2 Terminals for external conductors
The relevant subclause of the standard of the main switching device applies, for example
a) 8.1.5 of IEC 60898 for circuit-breakers;
b) 8.1.5 of IEC 61008-1 for RCCBs;
c) 8.1.5 of IEC 61009-1 for RCBOs.
Screwless terminals and quick-connect terminations may also be used. They are checked
according to IEC 60998-2-2 and IEC 61210 respectively.
8.1.3 Clearances and creepage distances (see annex A)
Clearances and creepage distances, with the exception of 8.1.4, shall not be less than the
values shown in table 2 on the device mounted as in normal use.
8.1.4 Clearances and creepage distances for electronic circuits connected between
active conductors or between active conductors and the earth
For electronic circuits connected between active conductors, or between active conductors and
the earth circuit when the contacts are in the closed position, the verification of the clearances
and creepage distances is replaced by the tests of 9.4 and 9.5.
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62019 © IEC:1999 – 21 –
Table 2 – Clearances and creepage distances
h)
Minimum creepage distances
Minimum clearances
mm
Description Group IIIa** Group II** Group I**
mm (175 V < CTI ≤ 400 V) (400 V < CTI ≤ 600 V) (600 V < CTI)
e)
Rated voltage Working voltage
120 V 230 V 400 V >25 V 120 V 250 V 400 V >25 V 120 V 250 V 400 V >25 V 120 V 250 V 400 V
d)
≤ 50 V ≤ 50 V ≤ 50 V
1 Between live parts 1,5* 3,0* 3,0 1,2 1,5 3,0 4,0 0,9 1,5 3,0 3,0 0,6 1,5 3,0 3,0
which are separated when
the auxiliary contact is in
the open position
2 Between live parts of 1,5 3,0 3,0
different polarity***
3 Between circuits 3,0 6,0 8,0 3,0 6,0 8,0 3,0 6,0 8,0 3,0 6,0 8,0
supplied from different
sources, one of which
c)
being PELV or SELV
g)
Rated voltage
d) d) d)
120 V 230 V 400 V 120 V 230 V 400 V 120 V 230 V 400 V
4 Between live parts and 1,5 3,0 3,0 1,5 3 4 1,5 3 4 1,5 3 4
– accessible surfaces of
operating means
– surface on which the
auxiliary contact unit is
a)
mounted
– screws or other means
for fixing the auxiliary
a)
contact unit
a)
– metal covers or boxes
– other accessible metal
b)
parts
5 Between metal parts of
the mechanism and
b)
– accessible metal parts
– screws or other means
for fixing the auxiliary
contact unit
* This value is reduced to 1,2 mm for live parts of switches of mini-gap construction, which are moved during the separation of the contacts.
** See IEC 60112.
***Not applicable to electronic circuits connected between active conductors. For electronic circuits permanently connected between active
conductors, the measurements of clearances and creepage distances are only carried out at the external terminals. The other measurements are
replaced by the tests of 9.4 and 9.5.
a)
The values are doubled if clearances and creepage distances between live parts of the device and the metallic screen or the surface on which the
auxiliary is mounted are not ensured by the design of the auxiliary unit only, so that when the auxiliary is mounted in the most unfavourable condition
such distances may be not sufficient.
b)
Including a metal foil in contact with the surfaces of insulating material which are accessible after installation as for normal use. The foil is pushed
into corners, grooves, etc., by means of the standard test finger.
c)
Including main circuits of the main switching device (for example: circuit-breaker, RCCB).
d)
These values cover also the rated voltages 220 V and 240 V.
e)
These minimum creepage distances are equal to the minimum associated clearances except for rated voltages less than or equal to 50 V, where
the minimum clearance is 0,2 mm. Interpolation is allowed for creepage distances corresponding to voltage values intermediate to those listed as
working voltage.
g)
Creepage distances cannot be less than the associated clearances.
h)
See annex A for the determination of creepage distances.
NOTE 1 – Dimensioning rules for solid insulation are under consideration
NOTE 2 – The values given for 230 V are also valid for 250 V, the values given for 400 V are also valid for 440 V.
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8.2 Performance requirements
8.2.1 Temperature rise
The corresponding subclause of the standard of the main switching device applies, for example:
a) 8.4 and annex C of IEC 60898 for circuit-breakers;
b) 8.4 of IEC 61008-1 for RCCBs;
c) 8.4 of IEC 61009-1 for RCBOs.
For certification purposes, the auxiliary contact unit is submitted associated with the main
switching device having the highest rated current of each fundamental design (for example as
defined in C.3.1 of IEC 60898) The test currents are applied at the same time to the auxiliary
contact unit and to the main switching device.
Compliance is checked by the tests of 9.3.3.
8.2.2 Dielectric properties
The corresponding subclause of the standard of the main switching device applies, for example:
a) 8.3 of IEC 60898 for circuit-breakers;
b) 8.3 of IEC 61008-1 for RCCBs;
c) 8.3 of IEC 61009-1 for RCBOs.
Compliance is checked by the tests of 9.3.4.
8.2.3 Ability to make, carry and break currents under normal
and abnormal load conditions
The auxiliary contact shall be capable of making and breaking the load and overload currents
given in tables 4 and 5 according to its utilization category shown in table 1.
Compliance is checked by the tests of 9.3.6.
8.2.4 Conditional short-circuit current
The auxiliary contact shall withstand the stresses resulting from short-circuit currents.
Compliance is checked by the tests of 9.3.7.
8.3 Test device of the auxiliary contact unit
Auxiliary contact units may be provided with a test device and the contacts to check the correct
performance of the auxiliary contact. It is not intended to be used for operating the auxiliary
contact in service. The test device and the contacts shall return automatically to the initial state
after operation.
Compliance is checked by inspection.
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62019 © IEC:1999 – 25 –
8.4 Correct operation of the main switching device
The main switching device shall operate correctly when equipped with the auxiliary contact unit.
Compliance is checked by the test 9.3.5.
8.5 Electromagnetic compatibility
Auxiliary contact units not containing electronic circuits are not sensitive to electromagnetic
disturbances and do not generate electromagnetic emission, except during switching or
automatic breaking operation of the main switching device. Therefore, they need not be
subjected to EMC verification. Auxiliary contact units containing electronic circuits are tested
according to IEC 61867.
9 Tests
9.1 Kinds of test
9.1.1 General
If the auxiliary contact unit is submitted for certification associated with its main switching
device, the tests are carried out on the whole assembly. If the auxiliary contact unit is submitted
separately for certification, the tests are made by assembling the auxiliary contact unit with the
switching device having the highest rated current, and b
...
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