FprEN IEC 60309-4:2021

Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 4: Switched socket-outlets and connectors, with or without interlock

IEC 60309-4:2021 applies to self-contained products primarily intended for industrial use, either indoors or outdoors that combine the following items within a single enclosure: – a fixed or portable socket-outlet according to IEC 60309-1 or IEC 60309-2 with a rated operating voltage not exceeding 1 000 V DC or 1 000 V AC with a frequency not exceeding 500 Hz and a rated current not exceeding 800 A; – a switching device. This second edition cancels and replaces the first edition published in 2006 and Amendment 1:2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – updated in order to take into account the technical revisions to IEC 60309-1 and to IEC 60309-2. This document is to be read in conjunction with IEC 60309-1:2021 and with IEC 60309‑2:2021.

Stecker, ortsfeste oder ortsveränderliche Steckdosen und Gerätestecker für industrielle Anwendungen - Teil 4 : Abschaltbare Steckdosen mit oder ohne Verriegelung

Prises de courant pour usages industriels - Partie 4: Prises de courant et prises mobiles avec interrupteur, avec ou sans dispositif de verrouillage

L’IEC 60309-4:2021 s’applique aux ensembles indépendants destinés principalement à un usage industriel, à l’intérieur ou à l’extérieur, qui combinent dans une même enveloppe les éléments suivants: - un socle fixe de prise de courant ou une prise mobile conforme à l’IEC 60309-1 ou l’IEC 60309-2 présentant une tension nominale d’emploi ne dépassant pas 1 000 V en courant continu ou 1 000 V en courant alternatif (avec une fréquence ne dépassant pas 500 Hz) et un courant nominal ne dépassant pas 800 A; - un interrupteur. Cette deuxième édition annule et remplace la première édition publiée en 2006 et son Amendement 1:2012. Elle constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: - mise à jour afin de prendre en compte les révisions techniques apportées à l’IEC 60309-1 et à l’IEC 60309-2. Le présent document doit être lu conjointement avec l’IEC 60309-1:2021 et l’IEC 60309‑2:2021.

Vtiči, fiksne ali prenosne vtičnice in vtičnice za industrijsko rabo - 4. del: Vtičnice in konektorji s stikalom in z zaklepom ali brez njega

General Information

• Status: Not Published
• ICS: 29.120.30 - Plugs, socket-outlets, couplers
• Technical Committee: CLC/TC 23H - Plugs, Socket-outlets and Couplers for industrial and similar applications, and for Electric Vehicles
• Drafting Committee: IEC/SC 23H - IEC_SC_23H
• Current Stage: 5099 - Project ratified - Proceed to publication phase
• Due Date: 08-Sep-2021
• Completion Date: 08-Sep-2021
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: kSIST FprEN IEC 60309-4:2021 - Plugs, fixed or portable socket- outlets and appliance inlets for industrial purposes - Part 4: Switched socket-outlets and connectors with or without interlock

RELATIONS

• Revised: EN 60309-4:2007 - Plugs, socket-outlets and couplers for industrial purposes - Part 4: Switched socket-outlets and connectors with or without interlock
• Effective Date: 13-Nov-2017
• Revised: EN 60309-4:2007/A1:2012 - Plugs, socket-outlets and couplers for industrial purposes - Part 4: Switched socket-outlets and connectors with or without interlock
• Effective Date: 13-Nov-2017

Standards Content (sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60309-4:2019
01-november-2019

Vtiči, fiksne ali prenosne vtičnice in vtičnice za industrijsko rabo - 4. del: Vtičnice

in konektorji s stikalom in z zaklepom ali brez njega

Plugs, fixed or portable socket- outlets and appliance inlets for industrial purposes - Part

4: Switched socket-outlets and connectors with or without interlock

Stecker, Steckdosen und Kupplungen für industrielle Anwendungen - Teil 4: Abschaltbare

Steckdosen und Kupplungen mit oder ohne Verriegelung

Prises de courant pour usages industriels - Partie 4: Prises de courant et prises mobiles

avec interrupteur, avec ou sans dispositif de verrouillage
Ta slovenski standard je istoveten z: prEN IEC 60309-4:2019
ICS:
29.120.30 Vtiči, vtičnice, spojke Plugs, socket-outlets,
couplers
oSIST prEN IEC 60309-4:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 60309-4:2019
23H/458/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60309-4 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2019-08-09 2019-11-01
SUPERSEDES DOCUMENTS:
23H/433/CD,23H/454/CC

IEC SC 23H : PLUGS, SOCKET-OUTLETS AND COUPLERS FOR INDUSTRIAL AND SIMILAR APPLICATIONS, AND FOR ELECTRIC

VEHICLES
SECRETARIAT: SECRETARY:
France Mr Bertrand Doignon
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
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 voting
The 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:

Plugs, fixed or portable socket-outlets and appliance inlets for industrial purposes - Part 4:

Switched socket-outlets and connectors, with or without interlock
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:

Copyright © 2019 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 any other purpose without permission in writing from IEC.
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oSIST prEN IEC 60309-4:2019
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1 CONTENTS

2 FOREWORD ........................................................................................................................... 3

3 INTRODUCTION ..................................................................................................................... 5

4 1 Scope ............................................................................................................................... 6

5 2 Normative references ....................................................................................................... 6

6 3 Terms and definitions ....................................................................................................... 7

7 4 General ............................................................................................................................ 8

8 5 Standard ratings ............................................................................................................... 8

9 6 Classification .................................................................................................................... 9

10 7 Marking ............................................................................................................................ 9

11 8 Dimensions .................................................................................................................... 11

12 9 Protection against electric shock .................................................................................... 11

13 10 Provision for earthing ..................................................................................................... 12

14 11 Terminals ....................................................................................................................... 12

15 12 Interlocks ....................................................................................................................... 12

16 12 Interlocks, switches and their components ....................................................................... 12

17 13 Resistance to ageing of rubber and thermoplastic material ............................................. 18

18 14 General construction ...................................................................................................... 18

19 15 Construction of fixed socket-outlets ................................................................................ 18

20 16 Construction of plugs and portable socket-outlets ........................................................... 18

21 17 Construction of appliance inlets ...................................................................................... 18

22 18 Degrees of protection ..................................................................................................... 18

23 19 Insulation resistance and dielectric strength ................................................................... 18

24 20 Breaking capacity ........................................................................................................... 18

25 21 Normal operation ............................................................................................................ 18

26 22 Temperature rise ............................................................................................................ 19

27 23 Flexible cable and their connection ................................................................................. 20

28 24 Mechanical strength ....................................................................................................... 20

29 25 Screws, current-carrying parts and connections .............................................................. 21

30 26 Creepage distances, clearances and distances through sealing compound .................... 22

31 27 Resistance to heat, to fire and to tracking ....................................................................... 22

32 28 Corrosion and resistance to rusting ................................................................................ 22

33 29 Conditional short-circuit current withstand test ............................................................... 22

34 30 Electromagnetic compatibility ......................................................................................... 22

36 Figure 401 – Example of apparatus for checking the withdrawal force ................................... 15

37 Figure 402 – Actuator applied force F ................................................................................... 21

39 Table 401 − Withdrawal force with respect to ratings ............................................................ 15

40 Table 402 – Actuator test force F .......................................................................................... 21

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43 INTERNATIONAL ELECTROTECHNICAL COMMISSION
44 ____________
46 PLUGS, FIXED OR PORTABLE SOCKET-OUTLETS AND
47 APPLIANCE INLETS FOR INDUSTRIAL PURPOSES –
49 Part 4: Switched socket-outlets
50 with or without interlock
54 FOREWORD

55 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

56 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

57 international co-operation on all questions concerning standardization in the electrical and electronic fields. To

58 this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

59 Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

60 Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested

61 in the subject dealt with may participate in this preparatory work. International, governmental and non-

62 governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

63 with the International Organization for Standardization (ISO) in accordance with conditions determined by

64 agreement between the two organizations.

65 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

66 consensus of opinion on the relevant subjects since each technical committee has representation from all

67 interested IEC National Committees.

68 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

69 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

70 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

71 misinterpretation by any end user.

72 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

73 transparently to the maximum extent possible in their national and regional publications. Any divergence

74 between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

75 the latter.

76 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

77 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

78 services carried out by independent certification bodies.

79 6) All users should ensure that they have the latest edition of this publication.

80 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

81 members of its technical committees and IEC National Committees for any personal injury, property damage or

82 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

83 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

84 Publications.

85 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

86 indispensable for the correct application of this publication.

87 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

88 patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

89 This new edition of IEC 60309-4 has been edited according to the current IEC/ISO Directives

90 Part 2 and to be in-line with the latest version (2020) of IEC 60309-1 and IEC 60309-2. It

91 bears the edition number 3.
92 The text of this International Standard is based on the following documents:
FDIS Report on voting
23H/---/FDIS 23H/---/RVD

94 International Standard IEC 60309-4 has been prepared by subcommittee 23H: Plugs and

95 socket-outlets for industrial purposes, of IEC technical committee 23: Electrical accessories.

96 This standard is to be read in conjunction with IEC 60309-1 (2020) and IEC 60309-2 (2020).

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97 Part 1 comprises clauses of a general character and the subsequent parts of the series deal

98 with particular types.

99 The clauses of the subsequent parts supplement or modify the corresponding clauses in Part 1.

100 Where the text of subsequent parts indicates an "addition" to or a "replacement" of the relevant

101 requirement, test specification or explanation of Part 1, these changes are made to the relevant

102 text of Part 1, which then becomes part of the standard. Where no change is necessary, the

103 words "This clause of Part 1 is applicable" are used.

104 Clauses, subclauses, figures, tables and notes which are additional to those in Part 1 are

105 numbered starting from 401.

106 The IEC 60309 series, under the general title Plugs, fixed or portable socket-outlets and

107 appliance inlets for industrial purposes comprises the following parts:
108 Part 1: General requirements

109 Part 2: Dimensional compatibility requirements for pin and contact-tube accessories

110 Part 4: Switched socket-outlets with or without interlock

111 The committee has decided that the contents of the base publication and its amendments will

112 remain unchanged until the stability date indicated on the IEC web site under

113 "http://webstore.iec.ch" in the data related to the specific publication. At this date, the

114 publication will be
115 • reconfirmed,
116 • withdrawn,
117 • replaced by a revised edition, or
118 • amended.
119
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120 INTRODUCTION
121

122 A list of all the parts in the IEC 60309 series, under the general title Plugs, fixed or portable

123 socket-outlets, and appliance inlets, can be found on the IEC website.

124 Subsequent parts of IEC 60309 deal with the requirements of particular types of accessories.

125 The clauses of these particular requirements supplement or modify the corresponding clauses

126 in the preceding Parts.
127 In this standard, the following print types are used:
128 • requirements proper: in roman type;
129 • test specifications: in italic type;
130 • notes: in smaller roman type.
131
132
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133 PLUGS, FIXED OR PORTABLE SOCKET-OUTLETS AND
134 APPLIANCE INLETS FOR INDUSTRIAL PURPOSES –
135
136 Part 4: Switched socket-outlets,
137 with or without interlock
138
139
140 1 Scope
141 Clause 1 of IEC 60309-1:2020 or IEC 60309-2:2020 applies as follows:
142 Replacement of the first paragraph by the following text:

143 This part of IEC 60309 applies to self-contained products primarily intended for industrial use,

144 either indoors or outdoors that combine the following items within a single enclosure:

145 - a fixed or portable socket-outlet according to IEC 60309-1 or IEC 60309-2 with a rated

146 operating voltage not exceeding 1 000 V DC or 1000 V AC not exceeding 500 Hz and

147 a rated current not exceeding 800 A,
148 - a switching device,
149 These products may incorporate an interlock and/or protective devices.

150 These accessories are intended to be installed by instructed persons (IEV 195-04-02) or

151 skilled persons (IEV 195-04-01) only.
152 2 Normative references
153 Clause 2 of IEC 60309-1:2020 applies except as follows:
154 Additional normative references:

155 IEC 60073, Basic and safety principles for man-machine interface, marking and identification -

156 Coding principles for indicators and actuators
157 IEC 60417-DB: , Graphical symbols for use on equipment
158 IEC 60617-DB , Graphical Symbols for diagrams
159 IEC 60947-1, Low-voltage switchgear and controlgear – Part 1: General rules

160 IEC 60947-4-1, Low-voltage switchgear and controlgear – Part 4-1: Contactors and motor-

161 starters – Electromechanical contactors and motor-starters

162 IEC 60947-5-1, Low-voltage switchgear and controlgear – Part 5-1: Control circuit devices

163 and switching elements – Electromechanical control circuit devices

164 IEC 61032, Protection of persons and equipment by enclosures – Probes for verification

165 IEC 61058-1, Switches for appliances – Part 1: General requirements
—————————
“DB” refers to the IEC on-line database.
“DB” refers to the IEC on-line database.
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166 3 Terms and definitions
167 Clause 3 of IEC 60309-1:2020 or IEC 60309-2:2020 applies except as follows:
168 Terms and definitions 3.6 to 3.9 do not apply.
169 Addition of the following terms and definitions:
170 3.401
171 switched socket-outlet

172 product containing in a single enclosure a switching device and a fixed or portable socket-

173 outlet, intended to be used in combination. It can be either interlocked or non-interlocked

174 3.402
175 interlocked socket-outlet
176 fixed or portable socket-outlet associated with an interlock
177 3.403
178 switching device

179 device designated to make or break the current in one or more electric circuits

180 [SOURCE IEV 441-14-01]
181 3.403.1
182 mechanical switching device

183 switching device designed to close and open one or more electric circuits by means of

184 separable contacts
185 [SOURCE IEV 441-14-02]
186 3.403.1.1
187 switch (mechanical)

188 mechanical switching device capable of making, carrying and breaking currents under normal

189 circuit conditions, which may include specified operating overload conditions and also

190 carrying, for a specified time, currents under specified abnormal circuit conditions such as

191 those of short-circuit
192 [SOURCE IEV 441-14-10]

193 NOTE 1 to entry A switch may be capable of making, but not breaking short-circuit currents.

194 3.403.1.1.1
195 switch-disconnector

196 switch, which in the open position complies with the requirements specified for the isolating

197 function

198 [SOURCE IEV 441-14-12 modified: This definition differs from IEV 441-14-05 by referring to

199 isolating function instead of the requirements specified for a disconnector.”]

200 3.403.1.2
201 contactor

202 mechanical switching device having only one position of rest, operated otherwise than by

203 hand, capable of making, carrying and breaking currents under normal circuit conditions,

204 including operating overload conditions
205 [SOURCE IEV 441-14-33]
206 3.403.2
207 associated switching device
208 separate switching device which can be replaced independently
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209 3.403.3
210 integral switching device

211 switching device constructed as a part of a fixed or portable socket-outlet covered by this

212 standard, where neither the switching device nor the socket-outlet can be replaced

213 independently
214 3.404
215 isolation (isolating function)

216 function intended to cut off the supply from all or a discrete section of the installation, by

217 separating the installation or section from every source of electrical energy for reasons of

218 safety (see IEC 60947-1 and IEC 61140 )
219 3.405
220 utilization category

221 〈switching device〉 combination of specified requirements related to the conditions in which the

222 switching device fulfils its purpose, selected to represent a characteristic group of practical

223 applications

224 NOTE The specified requirements may concern e.g. the values of making capacities (if applicable), breaking

225 capacities and other characteristics, the associated circuits under the relevant conditions of use and behaviour.

226 [SOURCE IEV 441-17-19, modified: deletion of “or the fuse”]
227 3.406
228 control circuit device

229 electrical device intended for the controlling, signalling, interlocking, etc. of switchgear and

230 controlgear (see IEC 60947-1, 2.1.1)
231 3.407
232 latching device

233 part of the interlock mechanism provided to hold a plug or appliance-inlet in the socket-outlet

234 4 General
235 Clause 4 of IEC 60309-1:2020 or IEC 60309-2:2020 applies except as follows:
236 Additional subclauses :

237 4.401 Components incorporated or integrated in products (e.g. flexible cable, current cut-

238 outs, thermal cut-outs, safety transformers, switches, fuses, residual current devices, lamp

239 holders and connecting devices) shall comply with the relevant standards as far as they

240 reasonably apply.
241 5 Standard ratings

242 Clause 5 of IEC 60309-1:2020 applies for products incorporating socket-outlets according to

243 IEC 60309-1

244 Clause 5 IEC 60309-2:2020 applies with the following addition for products incorporating

245 socket-outlets according to IEC 60309-2:
246 Add at the end of clause 5.201 the following:

247 For switched socket-outlet with or without interlock according to 6.1.401, the whole unit can

248 have a different degree of protection but not lower than IP44 (see also 8.1).

—————————

IEC 61140, Protection against electric shock – Common aspects for installation and equipment

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249 6 Classification
250 Clause 6 of IEC 60309-1:2020 or IEC 60309-2:2020 applies except as follows:
251 6.1.1 Replacement:
252 According to purpose: fixed socket-outlets, portable socket-outlets
253 6.1.5 Not applicable
254 Additional subclauses:
255 6.1.401 According to switching devices and interlock facilities:
256 – products with a switching device and without an interlock;
257 – products with a switching device and with an interlock.
258 6.1.402 According to the operation of the interlock/switching device
259 – manually;
260 – automatically (electrically and/or electronically);
261 – combination of the above.

262 NOTE 1 Inserting the plug is not considered a manual operation of the interlock/switching device.

263 6.1.403 According to the mechanical switching device
264 – switch;
265 – switch-disconnector;
266 – contactor;
267 – other devices with suitable switch rating.
268 6.1.404 According to suitability for isolation of the switching device
269 – suitable for isolation;
270 – not suitable for isolation.
271 6.1.405 According to whether the interlock system has a latching device
272 – with latching device (mechanical interlock);
273 – without latching device (electrical interlock).
274 6.1.406 According to the presence of a protective device
275 – with protective device;
276 – without protective device.
277 7 Marking
278 Clause 7 of IEC 60309-1:2020 or IEC 60309-2:2020 applies except as follows:
279 7.1 Addition:

280 – indication of the open and closed position of the switching device for products with

281 isolating function according to 6.1.404;
282 – indication of the type of switching device.
283 7.2 Addition:
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Open position and/or
OFF
IEC 60417-5008
Closed position and/or
IEC 60417-5007
a)b)
Switch or
a)b)
Switch-disconnector
a)b)
Contactor
Other devices According to their relevant standard
a) Graphical symbol may appear in a vertical or horizontal orientation

b) in absence of symbols for marking on equipment, symbols for diagrams according

to IEC 60617-7 are used
284
285 7.4 Not applicable.
286 7.5 Replacement:
287 The neutral terminal, if any, shall be marked N.

288 The earth terminal, if any, shall be marked (preferred) IEC 60417-5019 (2006-08) or

289 IEC 60417-5017 (2006-08).

290 The relationship between the terminals for the supply cable and load terminals/load contacts

291 shall be made clear, if necessary, by means of a diagram or instruction.

292 Additional marking to indicate neutral terminal and/or earthing terminal may be used as

293 follows:
294 - letter W and/or white colour for neutral
295 - letter G and/or green colour for earthing

296 The terminals for pilot conductors are not required to be marked. In the case they are marked

297 it is recommended to use the marking P or PILOT
298 Compliance is checked by inspection.
299 7.6 Replacement of the first sentence by the following text:

300 7.6 Marking on the outside of the enclosure shall be indelible and easily legible.

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301 Additional subclauses :

302 7.401 The position (open or closed) of the switching device shall be unambiguous and

303 clearly indicated.

304 The actuator of a mechanical switching device may be used to indicate the position of the

305 contacts.

306 For mechanical switching devices operated by means of two push-buttons, only the push-

307 button designated for the opening operation shall be red or marked with the symbol “O“.

308 The colours of other push-buttons, illuminated push-buttons and indicator lights shall be in

309 accordance with IEC 60073.

310 7.402 The marking of the type of switching device shall be on a place which is visible after

311 installation of the products, on the outside of enclosure or on the lid, if any, if the latter cannot

312 be removed without the aid of a tool.
313 8 Dimensions

314 Clause 8 of IEC 60309-1:2020 applies for products incorporating socket-outlets according to

315 IEC 60309-1

316 Clause 8 IEC 60309-2:2020 applies with the following addition for products incorporating

317 socket-outlets according to IEC 60309-2:
318 8.1 Add after the first paragraph the following:

319 Switched socket-outlets, according to 6.1.401 with degree of protection higher than IP44 and

320 different from IP67 shall use socket-outlets that comply with construction as stated in

321 standard sheet 2-I (continuation 2) or 2-III (continuation 2) or 2-VIII (continuation 2) (see

322 6.1.2).
323 9 Protection against electric shock

324 Replacement of Clause 9 of IEC 60309-1:2020 or IEC 60309-2:2020 by the following:

325 9.1 The enclosure shall be designed so that live parts are not accessible when in normal use

326 and when parts which can be removed without the aid of a tool have been removed.

327 Compliance is checked by inspection and, if necessary, by the tests from 9.1.1 to 9.1.3.

328 9.1.1 The standard test finger according to IEC 61032 Probe B is applied with a force of 10

329 N ± 1 N in every possible position. An electrical indicator with a voltage not less than 40 V

330 and not more than 50 V is used to show contact with the relevant part.

331 9.1.2 For elastomeric or thermoplastic enclosures, the following test is made at an ambient

332 temperature of 35 °C ± 2 °C, the products being at this temperature.

333 During this test, the parts of elastomeric or thermoplastic material of the products are

334 subjected for 1 min to a force of 75 N, applied through the tip of a straight unjointed test finger

335 of the same dimensions as the standard test finger. This finger, with an electrical indicator as

336 described above, is applied to all places where yielding of the insulating material could impair

337 the safety of the product.

338 During this test, the product shall not deform to such an extent that live parts become

339 accessible.
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+0,1
340 9.1.3 The test probe D of IEC 61032 is applied with a force of 1 N.
341 This test does not apply to the components fitted to the product.

342 The test wire is provided with an electrical indicator, with a voltage not less than 40 V and not

343 more than 50 V, to show contact with relevant part.

344 The protection is satisfactory if the wire cannot enter the enclosure, or if it enters, it does not

345 touch live parts inside the enclosure.

346 9.2 Parts providing protection against electric shock shall have adequate mechanical

347 strength and shall be reliably secured by means of screws or in a similar reliable manner so

348 that they will not loosen in normal use.
349 Compliance is checked by inspection and by the tests of Clauses 24 and 25.

350 9.3 Knobs, operating levers, push-buttons, rockers and the like, for operating switches in

351 switched socket-outlets shall be of insulating material, unless their accessible metal parts are

352 separated from the metal parts of the mechanism by double insulation or reinforced insulation,

353 or they are reliably connected to earth.
354 Compliance is checked by inspection and by the tests of Clauses 19 and 22.
355 10 Provision for earthing
356 Clause 10 of IEC 60309-1:2020 or IEC 60309-2:2020 applies except as follows:
357 10.1 Replacement of the first paragraph by the following:

358 Products with earthing contact shall be provided with an earthing terminal. Metal-clad fixed

359 products with an internal earthing terminal can, in addition, be provided with an external

360 earthing terminal, which, except for flush type products, shall be visible from the outside.

361 The earthing terminal of the socket-outlet may be used provided it is easily accessible.

362 11 Terminals
363 Clause 11 of IEC 60309-1:2020 or IEC 60309-2:2020 applies.
364 12 Interlocks
365 Replacement of Clause 1
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