SIST EN 61095:2009

SLOVENSKI STANDARD
SIST EN 61095:2009
01-maj-2009
1DGRPHãþD
SIST EN 61095:1995
SIST EN 61095:1995/A1:2002
Elektromehanski kontaktorji za gospodinjske in podobne namene (IEC 61095:2009)
Electromechanical contactors for household and similar purposes (IEC 61095:2009)
Elektromechanische Schütze für Hausinstallationen und ähnliche Zwecke (IEC
61095:2009)
Contacteurs électromécaniques pour usages domestiques et analogues (CEI
61095:2009)
Ta slovenski standard je istoveten z: EN 61095:2009
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
SIST EN 61095:2009 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61095:2009

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SIST EN 61095:2009

EUROPEAN STANDARD
EN 61095

NORME EUROPÉENNE
March 2009
EUROPÄISCHE NORM

ICS 29.120.99; 29.130.20 Supersedes EN 61095:1993 + A1:2000


English version


Electromechanical contactors
for household and similar purposes
(IEC 61095:2009)


Contacteurs électromécaniques pour Elektromechanische Schütze für
usages domestiques et analogues Hausinstallationen und ähnliche Zwecke
(CEI 61095:2009) (IEC 61095:2009)




This European Standard was approved by CENELEC on 2009-03-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

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

Central Secretariat: avenue Marnix 17, B - 1000 Brussels


© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61095:2009 E

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SIST EN 61095:2009
EN 61095:2009 - 2 -
Foreword
The text of document 17B/1640/FDIS, future edition 2 of IEC 61095, prepared by SC 17B, Low-voltage
switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, in conjunction with SC 23E,
Circuit-breakers and similar equipment for household use, of IEC TC 23, Electrical accessories, was
submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61095 on
2009-03-01.
This European Standard supersedes EN 61095:1993 + corrigendum March 1993 + A1:2000 +
corrigendum April 2001.
EN 61095:2009 includes the following significant technical changes with respect to EN 61095:1993:
– deletion of switching overvoltages requirements;
– addition of a new utilization category AC-7c: switching of compensated electric discharge lamp control;
– measuring of U required, but the marking is not required if U equal to 4 kV;
imp imp
– improvement regarding marking concerning direction of movement;
– improvement of dielectric properties;
– test of resistance to humidity referred to EN 60068-2-78 instead of HD 323.2.3 S2;
– amendment to Table B.1 regarding test sequences;
– deletion of Table F.2 regarding the correspondence between the nominal voltage of the supply system
and the contactor rated impulse withstand voltage;
– addition of a new Annex H (normative): degrees of protection of enclosed contactor;
– addition of a new Annex I (normative): requirements and tests for equipment with protective
separation.
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) 2009-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-03-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 61095:2009 was approved by CENELEC as a European
Standard without any modification.
__________

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SIST EN 61095:2009
- 3 - EN 61095:2009
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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 60028 1925 International standard of resistance - -
for copper


IEC 60050-151 2001 International Electrotechnical Vocabulary - -
(IEV) -
Part 151: Electrical and magnetic devices


IEC 60050-441 1984 International Electrotechnical Vocabulary - -
A1 2000 (IEV) -
Chapter 441: Switchgear, controlgear and
fuses


IEC 60050-604 1987 International Electrotechnical Vocabulary - -
A1 1998 (IEV) -
Chapter 604: Generation, transmission and
distribution of electricity - Operation


IEC 60050-826 2004 International Electrotechnical Vocabulary - -
(IEV) -
Part 826: Electrical installations


IEC 60068-2-78 2001 Environmental testing - EN 60068-2-78 2001
Part 2-78: Tests - Test Cab: Damp heat,
steady state


IEC 60073 2002 Basic and safety principles for man-machine EN 60073 2002
interface, marking and identification - Coding
principles for indicators and actuators


IEC 60085 2007 Electrical insulation - Thermal evaluation and EN 60085 2008
designation


IEC 60099-1 (mod) 1991 Surge arresters - EN 60099-1 1994
A1 1999 Part 1: Non-linear resistor type gapped surge A1 1999
arresters for a.c. systems


IEC 60112 2003 Method for the determination of the proof and EN 60112 2003
the comparative tracking indices of solid
insulating materials


IEC 60216 Series Electrical insulating materials - Properties of EN 60216 Series
thermal endurance


IEC 60364-4-44 2007 Low voltage electrical installations - - -
Part 4-44: Protection for safety - Protection
against voltage disturbances and
electromagnetic disturbances


IEC 60417 Data- Graphical symbols for use on equipment - -
base

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SIST EN 61095:2009
EN 61095:2009 - 4 -
Publication Year Title EN/HD Year

IEC 60445 (mod) 2006 Basic and safety principles for man-machine EN 60445 2007
interface, marking and identification -
Identification of equipment terminals and
conductor terminations


IEC 60447 2004 Basic and safety principles for man-machine EN 60447 2004
interface, marking and identification -
Actuating principles


IEC 60529 1989 Degrees of protection provided by enclosures EN 60529 1991
  (IP Code) + corr. May 1993
A1 1999 A1 2000


IEC 60664-1 2007 Insulation coordination for equipment within EN 60664-1 2007
low-voltage systems -
Part 1: Principles, requirements and tests


IEC 60695-2-10 2000 Fire hazard testing - EN 60695-2-10 2001
Part 2-10: Glowing/hot-wire based test
methods - Glow-wire apparatus and common
test procedure


IEC 60695-2-11 2000 Fire hazard testing - EN 60695-2-11 2001
Part 2-11: Glowing/hot-wire based test
methods - Glow-wire flammability test method
for end-products


IEC 60695-11-10 1999 Fire hazard testing - EN 60695-11-10 1999
A1 2003 Part 11-10: Test flames - 50 W horizontal A1 2003
and vertical flame test methods


IEC 60947-1 2007 Low-voltage switchgear and controlgear - EN 60947-1 2007
Part 1: General rules


IEC 60947-4-1 2000 Low-voltage switchgear and controlgear - EN 60947-4-1 2001
A1 2002 Part 4-1: Contactors and motor-starters - A1 2002
A2 2005 Electromechanical contactors and motor- A2 2005
starters


IEC 60947-5-1 2003 Low-voltage switchgear and controlgear - EN 60947-5-1 2004
Part 5-1: Control circuit devices and switching + corr. July 2005
elements - Electromechanical control circuit
devices


IEC 61140 2001 Protection against electric shock - Common EN 61140 2002
A1 (mod) 2004 aspects for installation and equipment A1 2006


IEC 61180 Series High-voltage test techniques for low-voltage EN 61180 Series
equipment


ISO 2039-2 1987 Plastics - Determination of hardness - EN ISO 2039-2 1999
Part 2: Rockwell hardness


ISO 7000 2004 Graphical symbols for use on equipment - - -
Index and synopsis

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SIST EN 61095:2009
IEC 61095
®
Edition 2.0 2009-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Electromechanical contactors for household and similar purposes

Contacteurs électromécaniques pour usages domestiques et analogues

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XF
CODE PRIX
ICS 29.120.99; 29.130.20 ISBN 2-8318-1026-2
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61095:2009
– 2 – 61095 © IEC:2009
CONTENTS
FOREWORD.6
INTRODUCTION.8
1 Scope.9
2 Normative references .9
3 Terms and definitions .11
3.1 General terms .11
3.2 Switching devices.13
3.3 Parts of switching devices .15
3.4 Operation of switching devices .18
3.5 Characteristic quantities .19
4 Classification.24
5 Characteristics of contactors .24
5.1 Summary of characteristics .24
5.2 Type of contactor .24
5.2.1 Number of poles .24
5.2.2 Method of control.24
5.3 Rated and limiting values for main circuits.24
5.3.1 General .24
5.3.2 Rated voltages .24
5.3.3 Currents or powers .25
5.3.4 Rated frequency .26
5.3.5 Rated duties .26
5.3.6 Normal load and overload characteristics .27
5.3.7 Rated conditional short-circuit current .28
5.4 Utilization category.28
5.4.1 General .28
5.4.2 Assignment of utilization categories based on the results of tests.28
5.5 Control circuits .29
5.6 Auxiliary circuits .29
5.7 Co-ordination with short-circuit protective devices .29
6 Product information .29
6.1 Nature of information.29
6.1.1 Identification.29
6.1.2 Characteristics, basic rated values and utilization.30
6.2 Marking .30
6.3 Instructions for installation, operation and maintenance .31
7 Normal service, mounting and transport conditions.31
7.1 Normal service conditions .31
7.1.1 Ambient air temperature .31
7.1.2 Altitude.32
7.1.3 Atmospheric conditions.32
7.1.4 Normal electromagnetic environmental conditions .33
7.2 Conditions during transport and storage .33
7.3 Mounting .33
8 Constructional and performance requirements.33
8.1 Constructional requirements.33

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SIST EN 61095:2009
61095 © IEC:2009 – 3 –
8.1.1 General .33
8.1.2 Materials .33
8.1.3 Strength of screws or nuts other than those on terminals which are
intended to be operated during installation or maintenance .34
8.1.4 Vacant.35
8.1.5 Actuator.35
8.1.6 Indication of the OFF and ON positions .35
8.1.7 Terminals .36
8.1.8 Additional requirements for contactors provided with a neutral pole.37
8.1.9 Provisions for earthing.37
8.1.10 Enclosures .38
8.1.11 Degrees of protection of enclosed contactors .39
8.1.12 Resistance to impact .39
8.1.13 Durability of markings .39
8.2 Performance requirements .40
8.2.1 Operating conditions.40
8.2.2 Temperature-rise .40
8.2.3 Dielectric properties.43
8.2.4 Normal load and overload performance requirements .45
8.2.5 Co-ordination with short-circuit protective devices .47
8.3 Electromagnetic compatibility .47
8.3.1 Immunity .47
8.3.2 Emission .47
9 Tests .48
9.1 Types of test .48
9.1.1 General .48
9.1.2 Type tests .48
9.1.3 Routine tests .48
9.1.4 Sampling tests for clearance verification.49
9.2 Compliance with constructional requirements .49
9.2.1 General .49
9.2.2 Materials .49
9.2.3 Test on screws or nuts other than those on terminals which are
intended to be operated during installation or maintenance .52
9.2.4 Verification of the degrees of protection of enclosed contactors.52
9.2.5 Mechanical properties of terminals .52
9.2.6 Test of resistance to impact.55
9.2.7 Test of durability of marking .57
9.3 Compliance with performance requirements .58
9.3.1 Test sequences .58
9.3.2 General test conditions.58
9.3.3 Performance under no load, normal load and overload conditions .60
9.3.4 Performance under short-circuit conditions .71
9.3.5 Overload current withstand capability .76
9.3.6 Routine tests .76
Annex A (normative) Terminal marking and distinctive number .95
Annex B (normative) Test sequences and number of samples . 100
Annex C (normative) Description of a method for adjusting the load circuit . 102
Annex D (normative) Determination of short-circuit power-factor. 104

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SIST EN 61095:2009
– 4 – 61095 © IEC:2009
Annex E (normative) Measurement of creepage distances and clearances . 106
Annex F (normative) Correlation between the nominal voltage of the supply system
and the rated impulse withstand voltage of a contactor .111
Annex G (normative) Hot wire ignition test .113
Annex H (normative) Degrees of protection of enclosed contactor . 115
Annex I (normative) Requirements and tests for equipment with protective separation. 122

Figure 1 – Thread-forming tapping screw .77
Figure 2 – Thread-cutting tapping screw .77
Figure 3 – Ball-pressure test apparatus (see 9.2.2.3.1).77
Figure 4 – Test equipment for flexion test (see 9.2.5.3) .78
Figure 5 – Gauges of form A and form B (see 9.2.5.5) .78
Figure 6 – Pendulum for mechanical impact test apparatus (striking element) (see
9.2.6.2.1) .79
Figure 7 – Mounting support for sample, for mechanical impact test (see 9.2.6.2.1).80
Figure 8 – Pendulum hammer test apparatus (see 9.2.6.2.1) .81
Figure 9 – Sphere test apparatus (see 9.2.6.2.2) .81
Figure 10 – Jointed test finger (according to IEC 60529).82
Figure 11 – Diagram of the test circuit for the verification of making and breaking
capacities of a single-pole contactor on single-phase a.c.83
Figure 12 – Diagram of the test circuit for the verification of making and breaking
capacities of a two-pole contactor on single-phase a.c.84
Figure 13 – Diagram of the test circuit for the verification of making and breaking
capacities of a three-pole contactor .85
Figure 14 – Diagram of the test circuit for the verification of making and breaking
capacities of a four-pole contactor .86
Figure 15 – Schematic illustration of the recovery voltage across contacts of the first
phase to clear (see 9.3.3.5.2, e)) under ideal conditions .87
Figure 16 – Diagram of a load circuit adjustment method .88
Figure 17 – Diagram of the test circuit for the verification of short-circuit making and
breaking capacities of a single-pole contactor on single-phase a.c. .89
Figure 18 – Diagram of the test circuit for the verification of short-circuit making and
breaking capacities of a two-pole contactor on single-phase a.c. .90
Figure 19 – Diagram of the test circuit for the verification of short-circuit making and
breaking capacities of a three-pole contactor .91
Figure 20 – Diagram of the test circuit for the verification of short-circuit making and
breaking capacities of a four-pole contactor.92
Figure 21 – Example of short-circuit making and breaking test record in the case of a
single-pole contactor on single-phase a.c. .93
Figure 22 – Diagram of the test circuit for making and breaking verification for
utilization category AC-7c .94
Figure C.1 – Determination of the actual value of the factor γ .103
Figure E.1 – Measurement of ribs .106
Figure E.2 – Creepage distance example 1.107
Figure E.3 – Creepage distance example 2.107
Figure E.4 – Creepage distance example 3.107
Figure E.5 – Creepage distance example 4.108

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SIST EN 61095:2009
61095 © IEC:2009 – 5 –
Figure E.6 – Creepage distance example 5.108
Figure E.7 – Creepage distance example 6.108
Figure E.8 – Creepage distance example 7.109
Figure E.9 – Creepage distance example 8.109
Figure E.10 – Creepage distance example 9. 109
Figure E.11 – Creepage distance example 10 . 110
Figure E.12 – Creepage distance example 11 . 110
Figure G.1 – Test fixture for hot wire ignition test.113
Figure H.1 – IP Codes .119
Figure I.1 – Example of application with component connected between separated
circuits.126

Table 1 – Utilization categories .29
Table 2 – Standard cross-sections of round copper conductors.37
Table 3 – Temperature-rise limits for insulated coils in air.40
Table 4 – Temperature-rise limits of terminals .41
Table 5 – Temperature-rise limits of accessible parts.41
Table 6 – Intermittent duty test cycle data.42
Table 7 – Making and breaking capacities. Making and breaking conditions
corresponding to the utilization categories .45
Table 8 – Relationship between current broken I and off-time for the verification of
c
rated making and breaking capacities .46
Table 9 – Conventional operational performance. Making and breaking conditions
corresponding to the utilization categories .46
Table 10 – Overload current withstand requirements .47
Table 11 – Tightening torques for the verification of the mechanical strength of screw-
type terminals .53
Table 12 – Test values for flexion and pull-out tests for round copper conductors .54
Table 13 – Maximum conductor cross-sections and corresponding gauges .55
Table 14 – Tolerances on test quantities.59
Table 15 – Test copper conductors .62
Table 16 – Impulse test voltages and corresponding altitudes.66
Table 17 – Minimum clearances in air .67
Table 18 – Minimum creepage distances .67
Table 19 – Dielectric test voltage co
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