IEC 61095:2009

Electromechanical contactors for household and similar purposes

IEC 61095:2009 applies to electromechanical air break contactors for household and similar purposes provided with main contacts intended to be connected to circuits the rated voltage of which does not exceed 440 V a.c. (between phases) with rated operational currents less than or equal to 63 A for utilization category AC-7a and 32 A for utilization categories AC-7b and AC-7c, and rated conditional short-circuit current less than or equal to 6 kA. This second edition cancels and replaces the first edition published in 1992 and its Amendment 1 (2000), and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- deletion of switching overvoltages requirements,
- addition of a new utilization category AC-7c: switching of compensated electric discharge lamp control,
- measuring of Uimp required, but the marking is not required if Uimp equal to 4 kV,
- improvement regarding marking concerning direction of movement,
- improvement of dielectric properties,
- test of resistance to humidity referred to IEC 60068-2-78 instead of IEC 60068-2-3,
- 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.

Contacteurs électromécaniques pour usages domestiques et analogues

La CEI 61095:2009 est applicable aux contacteurs électromécaniques à air pour usages domestiques et analogues dont les contacts principaux sont destinés à être reliés à des circuits dont la tension assignée ne dépasse pas 440 V en courant alternatif (entre phases) et dont les courants assignés d'emploi sont inférieurs ou égaux à 63 A pour la catégorie d'emploi AC-7a et à 32 A pour les catégories d'emploi AC-7b et AC-7c, et le courant assigné de court-circuit conditionnel est inférieur ou égal à 6 kA. Cette deuxième édition annule et remplace la première édition parue en 1992 et son Amendement 1 (2000). Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- suppression des exigences concernant les surtensions de manoeuvre,
- ajout de la nouvelle catégorie d'utilisation AC-7c: commande de lampes à décharge électrique avec compensation,
- exigence de mesure de Uimp,
- amélioration concernant le marquage,
- test de résistance à l'humidité basée sur CEI 60068-2-78,
- amendement au Tableau B.1,
- suppression du Tableau F.2,
- ajout de la nouvelle Annexe H (normative): degrés,
- ajout de la nouvelle Annexe I (normative).

General Information

• Status: Published
• Publication Date: 04-Feb-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.120.99 - Other electrical accessories
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: SC 121A - Low-voltage switchgear and controlgear

Relations

• Revises: IEC 61095:1992 - Electromechanical contactors for household and similar purposes
• Effective Date: 05-Sep-2023
• Revises: IEC 61095:1992/AMD1:2000 - Amendment 1 - Electromechanical contactors for household and similar purposes
• Effective Date: 05-Sep-2023
• Revised: IEC 61095:2023 - Electromechanical contactors for household and similar purposes
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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

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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 978-2-88910-411-6
– 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

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 marki
...