prEN IEC 61095:2022
(Main)Electromechanical contactors for household and similar purposes
Electromechanical contactors for household and similar purposes
Elektromechanische Schütze für Hausinstallationen und ähnliche Zwecke
Contacteurs électromécaniques pour usages domestiques et analogues
Elektromehanski kontaktorji za gospodinjstva in podobne namene
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 61095:2022
01-oktober-2022
Elektromehanski kontaktorji za gospodinjstva in podobne namene
Electromechanical contactors for household and similar purposes
Elektromechanische Schütze für Hausinstallationen und ähnliche Zwecke
Contacteurs électromécaniques pour usages domestiques et analogues
Ta slovenski standard je istoveten z: prEN IEC 61095:2022
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
oSIST prEN IEC 61095:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN IEC 61095:2022
121A/505/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61095 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-07-15 2022-10-07
SUPERSEDES DOCUMENTS:
121A/475/CD, 121A/490A/CC
IEC SC 121A : LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR
SECRETARIAT: SECRETARY:
France Mr Michaël LAHEURTE
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
SC 23B,SC 23E,TC 34
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel votingThe attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.TITLE:
Electromechanical contactors for household and similar purposes
PROPOSED STABILITY DATE: 2026
NOTE FROM TC/SC OFFICERS:
SC121A Officers support circulation of CDV for project IEC 61095 ED3.
Copyright © 2022 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for
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oSIST prEN IEC 61095:2022
IEC CDV 61095 © IEC 2022 2 121A/505/CDV
1 CONTENTS
2 FOREWORD ........................................................................................................................... 8
3 INTRODUCTION ................................................................................................................... 10
4 1 Scope ............................................................................................................................ 11
5 2 Normative references .................................................................................................... 11
6 3 Terms and definitions .................................................................................................... 13
7 3.1 General terms ....................................................................................................... 13
8 3.2 Switching devices ................................................................................................. 15
9 3.3 Parts of switching devices ..................................................................................... 17
10 3.4 Operation of switching devices .............................................................................. 21
11 3.5 Characteristic quantities ....................................................................................... 22
12 4 Classification ................................................................................................................. 27
13 5 Characteristics of contactors ......................................................................................... 27
14 5.1 Summary of characteristics ................................................................................... 27
15 5.2 Type of contactor .................................................................................................. 27
16 5.2.1 Number of poles ............................................................................................ 27
17 5.2.2 Method of control ........................................................................................... 27
18 5.3 Rated and limiting values for main circuits ............................................................ 27
19 5.3.1 General ......................................................................................................... 27
20 5.3.2 Rated voltages .............................................................................................. 27
21 5.3.3 Currents or powers ........................................................................................ 28
22 5.3.4 Rated frequency ............................................................................................ 29
23 5.3.5 Rated duties .................................................................................................. 29
24 5.3.6 Normal load and overload characteristics ...................................................... 30
25 5.3.7 Rated conditional short-circuit current............................................................ 31
26 5.4 Utilization category ............................................................................................... 31
27 5.4.1 General ......................................................................................................... 31
28 5.4.2 Assignment of utilization categories based on the results of tests .................. 31
29 5.5 Control circuits ...................................................................................................... 32
30 5.6 Auxiliary circuits .................................................................................................... 32
31 5.7 Co-ordination with short-circuit protective devices................................................. 32
32 6 Product information ....................................................................................................... 32
33 6.1 Nature of information ............................................................................................ 32
34 6.1.1 Identification .................................................................................................. 33
35 6.1.2 Characteristics, basic rated values and utilization .......................................... 33
36 6.2 Marking ................................................................................................................. 33
37 6.3 Instructions for installation, operation and maintenance ........................................ 34
38 7 Normal service, mounting and transport conditions ........................................................ 35
39 7.1 Normal service conditions ..................................................................................... 35
40 7.1.1 Ambient air temperature ................................................................................ 35
41 7.1.2 Altitude .......................................................................................................... 35
42 7.1.3 Atmospheric conditions .................................................................................. 35
43 7.1.4 Normal electromagnetic environmental conditions ......................................... 36
44 7.2 Conditions during transport and storage ................................................................ 36
45 7.3 Mounting ............................................................................................................... 36
46 8 Constructional and performance requirements ............................................................... 36
47 8.1 Constructional requirements ................................................................................. 36
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48 8.1.1 General ......................................................................................................... 36
49 8.1.2 Materials ....................................................................................................... 37
50 8.1.3 Strength of screws or nuts other than those on terminals which are51 intended to be operated during installation or maintenance ........................... 38
52 8.1.4 Vacant ........................................................................................................... 38
53 8.1.5 Actuator ......................................................................................................... 38
54 8.1.6 Indication of the OFF and ON positions ......................................................... 39
55 8.1.7 Terminals ...................................................................................................... 39
56 8.1.8 Additional requirements for contactors provided with a neutral pole ............... 41
57 8.1.9 Provisions for earthing ................................................................................... 41
58 8.1.10 Enclosures .................................................................................................... 42
59 8.1.11 Degrees of protection of enclosed contactors ................................................ 43
60 8.1.12 Resistance to impact ..................................................................................... 43
61 8.1.13 Durability of markings .................................................................................... 43
62 8.1.14 Fault and abnormal conditions ....................................................................... 44
63 8.2 Performance requirements .................................................................................... 44
64 8.2.1 Operating conditions ...................................................................................... 44
65 8.2.2 Temperature-rise ........................................................................................... 45
66 8.2.3 Dielectric properties ....................................................................................... 48
67 8.2.4 Normal load and overload performance requirements .................................... 50
68 8.2.5 Co-ordination with short-circuit protective devices ......................................... 53
69 8.3 EMC Electromagnetic compatibility ....................................................................... 53
70 8.3.1 General ......................................................................................................... 53
71 8.3.2 Immunity ........................................................................................................ 53
72 8.3.3 Emission ........................................................................................................ 53
73 8.4 Embedded software .............................................................................................. 54
74 9 Tests ............................................................................................................................. 54
75 9.1 Types of test ......................................................................................................... 54
76 9.1.1 General ......................................................................................................... 54
77 9.1.2 Type tests...................................................................................................... 54
78 9.1.3 Routine tests ................................................................................................. 55
79 9.1.4 Sampling tests for clearance verification ........................................................ 55
80 9.2 Compliance with constructional requirements ........................................................ 55
81 9.2.1 General ......................................................................................................... 55
82 9.2.2 Materials ....................................................................................................... 55
83 9.2.3 Test on screws or nuts other than those on terminals which are84 intended to be operated during installation or maintenance ........................... 58
85 9.2.4 Verification of the degrees of protection of enclosed contactors ..................... 58
86 9.2.5 Mechanical properties of terminals ................................................................ 58
87 9.2.6 Test of resistance to impact ........................................................................... 64
88 9.2.7 Test of durability of marking........................................................................... 66
89 9.2.8 Breakdown of components ............................................................................. 66
90 9.3 Compliance with performance requirements .......................................................... 67
91 9.3.1 Test sequences ............................................................................................. 67
92 9.3.2 General test conditions .................................................................................. 67
93 9.3.3 Performance under no load, normal load and overload conditions.................. 69
94 9.3.4 Performance under short-circuit conditions .................................................... 84
95 9.3.5 Overload current withstand capability ............................................................ 88
96 9.3.6 Routine tests ................................................................................................. 89
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97 9.4 Tests for EMC ....................................................................................................... 89
98 9.4.1 General ......................................................................................................... 89
99 9.4.2 Immunity ........................................................................................................ 89
100 9.4.3 Emission ........................................................................................................ 90
101 Annex A (normative) Terminal marking and distinctive number .......................................... 113
102 A.1 General ............................................................................................................... 113
103 A.2 Terminal marking of impedances (alphanumerical) .............................................. 113
104 A.2.1 Coils ............................................................................................................ 113
105 A.2.2 Electromagnetic releases............................................................................. 113
106 A.2.3 Interlocking electromagnets ......................................................................... 114
107 A.2.4 Indicating light devices ................................................................................ 114
108 A.3 Terminal marking of contact elements for contactors with two positions109 (numerical) ......................................................................................................... 114
110 A.3.1 Contact elements for main circuits (main contact elements) ......................... 114
111 A.3.2 Contact elements for auxiliary circuit (auxiliary contact elements) ................ 115
112 A.4 Distinctive number .............................................................................................. 116
113 Annex B (normative) Test sequences and number of samples ........................................... 118
114 B.1 Test sequences .................................................................................................. 118
115 B.2 Number of samples ............................................................................................. 118
116 Annex C (normative) Description of a method for adjusting the load circuit ........................ 120
117 Annex D (normative) Determination of short-circuit power-factor ........................................ 122
118 D.1 General ............................................................................................................... 122
119 D.2 Method I – Determination from DC component .................................................... 122
120 D.3 Method II – Determination with pilot generator .................................................... 123
121 Annex E (normative) Measurement of creepage distances and clearances ........................ 124
122 E.1 Basic principles ................................................................................................... 124
123 E.2 Use of ribs .......................................................................................................... 124
124 Annex F (normative) Correlation between the nominal voltage of the supply system
125 and the rated impulse withstand voltage of a contactor ................................................ 129
126 Annex G (normative) Hot wire ignition test ......................................................................... 131
127 Annex H (normative) Degrees of protection of enclosed contactor ..................................... 133
128 H.0 Guide to the use of Annex H ............................................................................... 133
129 H.1 Scope and object ................................................................................................ 133
130 H.3 Terms and definitions.......................................................................................... 133
131 H.4 Designation......................................................................................................... 133
132 H.5 Degrees of protection against access to hazardous parts and against ingress
133 of solid foreign objects indicated by the first characteristic numeral .................... 133
134 H.6 Degrees of protection against ingress of water indicated by the second135 characteristic numeral ......................................................................................... 134
136 H.7 Degrees of protection against access to hazardous parts indicated by the137 additional letter ................................................................................................... 134
138 H.8 Supplementary letters ......................................................................................... 134
139 H.9 Examples of designations with IP Code............................................................... 134
140 H.10 Marking ............................................................................................................... 134
141 H.11 General requirements for tests ............................................................................ 134
142 H.11.1 Subclause 11.1 of IEC 60529 applies. ......................................................... 134
143 H.11.2 Subclause 11.2 of IEC 60529 applies with the following additions. ............... 134
144 H.11.3 Subclause 11.3 of IEC 60529 applies with the following addition: ................ 135
145 H.11.4 Subclause 11.4 of IEC 60529 applies. ......................................................... 135
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146 H.11.5 Where an empty enclosure is used as a component of an enclosed
147 device, 11.5 of IEC 60529 applies. .............................................................. 135
148 H.12 Tests for protection against access to hazardous parts indicated by the first
149 characteristic numeral ......................................................................................... 135
150 H.13 Tests for protection against ingress of solid foreign objects indicated by the
151 first characteristic numeral .................................................................................. 135
152 H.13.4 Dust test for first characteristic numerals 5 and 6 ........................................ 135
153 H.14 Tests for protection against water indicated by second characteristic154 numeral .............................................................................................................. 136
155 H.14.1 Subclause 14.1 of IEC 60529 applies. ......................................................... 136
156 H.14.2 Subclause 14.2 of IEC 60529 applies. ......................................................... 136
157 H.14.3 Subclause 14.3 of IEC 60529 applies with the following addition: ................ 136
158 H.15 Tests for protection against access to hazardous parts indicated by159 additional letter ................................................................................................... 136
160 Annex I (normative) Requirements and tests for equipment with protective separation ....... 137
161 I.1 General ............................................................................................................... 137
162 I.2 Terms and definitions.......................................................................................... 137
163 I.3 Requirements ..................................................................................................... 138
164 I.3.1 General ....................................................................................................... 138
165 I.3.2 Dielectric requirements ................................................................................ 139
166 I.3.3 Construction requirements ........................................................................... 139
167 I.4 Tests .................................................................................................................. 139
168 I.4.1 General ....................................................................................................... 139
169 I.4.2 Dielectric tests ............................................................................................. 139
170 I.4.3 Examples of constructional measures .......................................................... 140
171172 Figure 1 – Thread-forming tapping screw .............................................................................. 92
173 Figure 2 – Thread-cutting tapping screw ............................................................................... 92
174 Figure 3 – Ball-pressure test apparatus (see 9.2.2.3.1) ......................................................... 92
175 Figure 4 – Test equipment for flexion test (see 9.2.5.3) ........................................................ 93
176 Figure 5 – Gauges of form A and form B (see 9.2.5.5) .......................................................... 93
177 Figure 6 – Pendulum for mechanical impact test apparatus (striking element) (see
178 9.2.6.2.1) .............................................................................................................................. 94
179 Figure 7 – Mounting support for sample, for mechanical impact test (see 9.2.6.2.1) .............. 95
180 Figure 8 – Pendulum hammer test apparatus (see 9.2.6.2.1) ................................................ 96
181 Figure 9 – Sphere test apparatus (see 9.2.6.2.2) .................................................................. 96
182 Figure 10 – Jointed test finger (according to IEC 60529) ....................................................... 97
183 Figure 11 – Diagram of the test circuit for the verification of making and breaking
184 capacities of a single-pole contactor on single-phase AC ...................................................... 98
185 Figure 12 – Diagram of the test circuit for the verification of making and breaking
186 capacities of a two-pole contactor on single-phase AC .......................................................... 99
187 Figure 13 – Diagram of the test circuit for the verification of making and breaking
188 capacities of a three-pole contactor .................................................................................... 100
189 Figure 14 – Diagram of the test circuit for the verification of making and breaking
190 capacities of a four-pole contactor ...................................................................................... 101
191 Figure 15 – Schematic illustration of the recovery voltage across contacts of the first
192 phase to clear (see 9.3.3.5.2, e)) under ideal conditions ..................................................... 102
193 Figure 16 – Diagram of a load circuit adjustment method .................................................... 103
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194 Figure 17 – Diagram of the test circuit for the verification of short-circuit making and
195 breaking capacities of a single-pole contactor on single-phase AC ..................................... 104
196 Figure 18 – Diagram of the test circuit for the verification of short-circuit making and
197 breaking capacities of a two-pole contactor on single-phase AC ......................................... 105
198 Figure 19 – Diagram of the test circuit for the verification of short-circuit making and
199 breaking capacities of a three-pole contactor ...................................................................... 106
200 Figure 20 – Diagram of the test circuit for the verification of short-circuit making and
201 breaking capacities of a four-pole contactor ........................................................................ 107
202 Figure 21 – Example of short-circuit making and breaking test record in the case of a
203 single-pole contactor on single-phase AC ........................................................................... 108
204 Figure 22 – Diagram of the test circuit for making and breaking verification for
205 utilization category AC-7c ................................................................................................... 109
206 Figure 23 – Example of Screwless-type clamping units ....................................................... 110
207 Figure 24 – Voltage drop measurement at contact point of the clamping terminal ............... 111
208 Figure 25 - Connecting samples for ageing test for screwless-type clamping units .............. 111
209 Figure 26 – Diagram of the test circuit for making and breaking verification for
210 utilization category AC-7d ................................................................................................... 112
211 Figure C.1 – Determination of the actual value of the factor ............................................. 121
212 Figure E.1 – Measurement of ribs ....................................................................................... 124
213 Figure E.2 – Creepage distance example 1 ......................................................................... 125
214 Figure E.3 – Creepage distance example 2 ......................................................................... 125
215 Figure E.4 – Creepage distance example 3 ......................................................................... 125
216 Figure E.5 – Creepage distance example 4 ......................................................................... 126
217 Figure E.6 – Creepage distance example 5 ......................................................................... 126
218 Figure E.7 – Creepage distance example 6 ......................................................................... 126
219 Figure E.8 – Creepage distance example 7 ......................................................................... 127
220 Figure E.9 – Creepage distance example 8 ......................................................................... 127
221 Figure E.10 – Creepage distance example 9 ....................................................................... 127
222 Figure E.11 – Creepage distance example 10 ..................................................................... 128
223 Figure E.12 – Creepage distance example 11 ..................................................................... 128
224 Figure G.1 – Test fixture for hot wire ignition test ................................................................ 131
225 Figure I.1 – Example of application with component connected between separated
226 circuits ................................................................................................................................ 141
227228 Table 1 – Utilization categories ............................................................................................. 32
229 Table 2 – Standard cross-sections of round copper conductors............................................. 41
230 Table 3 – Temperature-rise limits for insulated coils in air ..................................................... 46
231 Table 4 – Temperature-rise limits of terminals ...................................................................... 46
232 Table 5 – Temperature-rise limits of accessible parts.................................
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