IEC 60364-4-41:2005

Low-voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock

IEC 60364-4-41:2005 Specifies essential requirements regarding protection against electric shock of persons and livestock. It deals also with the application and co-ordination of these requirements in relation to external influences. Requirements are also given for the application of additional protection in certain cases.

Installations électriques à basse tension - Partie 4-41: Protection pour assurer la sécurité - Protection contre les chocs électriques

IEC 60364-4-41:2005 Spécifie des exigences essentielles relatives à la protection contre les chocs électriques des personnes et des animaux domestiques. Elle traite de l'application et de la coordination de ces exigences en liaison avec les conditions des influences externes. Les exigences relatives à la protection complémentaire sont données dans certains cas.

General Information

• Status: Published
• Publication Date: 14-Dec-2005
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 13.260 - Protection against electric shock. Live working
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: TC 64 - Electrical installations and protection against electric shock
• Current Stage: PPUB - Publication issued
• Start Date: 28-Feb-2006
• Completion Date: 15-Dec-2005

Relations

• Amended By: IEC 60364-4-41:2005/AMD1:2017 - Amendment 1 - Low voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock
• Effective Date: 05-Sep-2023
• Revises: IEC 60364-4-41:2001 - Electrical installations of buildings - Part 4-41: Protection for safety - Protection against electric shock
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 60364-4-41
Fifth edition
2005-12
GROUP SAFETY PUBLICATION
Low-voltage electrical installations –
Part 4-41:
Protection for safety –
Protection against electric shock

This English-language version is derived from the original
bilingual publication by leaving out all French-language
pages. Missing page numbers correspond to the French-
language pages.
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.

Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,

edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the

base publication incorporating amendment 1 and the base publication incorporating

amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to
search by a variety of criteria including text searches, technical committees
and date of publication. On-line information is also available on recently issued
publications, withdrawn and replaced publications, as well as corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/online_news/ justpub)
is also available by email. Please contact the Customer Service Centre (see
below) for further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:

Email: [e-mail]
Tel: [phone]
Fax: [phone]
INTERNATIONAL IEC
STANDARD 60364-4-41
Fifth edition
2005-12
GROUP SAFETY PUBLICATION
Low-voltage electrical installations –
Part 4-41:
Protection for safety –
Protection against electric shock

© IEC 2005 Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,
including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
V
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

60364-4-41  IEC:2005 – 3 –
CONTENTS
FOREWORD.5

410 Introduction .9

410.1 Scope .11

410.2 Normative references .11

410.3 General requirements .13

411 Protective measure: automatic disconnection of supply .15

411.1 General .15
411.2 Requirements for basic protection .17
411.3 Requirements for fault protection .17
411.4 TN systems.21
411.5 TT systems.23
411.6 IT systems.25
411.7 Functional extra-low voltage (FELV) .29
412 Protective measure: double or reinforced insulation.31
412.1 General .31
412.2 Requirements for basic protection and fault protection (protection against
indirect contact).33
413 Protective measure: electrical separation .37
413.1 General .37
413.2 Requirements for basic protection .37
413.3 Requirements for fault protection .37
414 Protective measure: extra-low-voltage provided by SELV and PELV.39
414.1 General .39
414.2 Requirements for basic protection and fault protection .39
414.3 Sources for SELV and PELV.41
414.4 Requirements for SELV and PELV circuits.41
415 Additional protection.43
415.1 Additional protection: residual current protective devices (RCDs) .45
415.2 Additional protection: supplementary protective equipotential bonding.45

Annex A (normative) Provisions for basic protection (protection against direct contact) .47

Annex B (normative) Obstacles and placing out of reach .51
Annex C (normative) Protective measures for application only when the installation is
controlled or under the supervision of skilled or instructed persons.55
Annex D (informative) Correspondence between IEC 60364-4-41(2001) and the present
standard.…. .61

Bibliography.65

Figure B.1 – Zone of arm's reach .53

Table 41.1 – Maximum disconnection times .19
Table D.1 – Correspondence between IEC 60364-4-41:2001 and the present standard .61

60364-4-41  IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 4-41: Protection for safety –

Protection against electric shock

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60364-4-41 has been prepared by IEC technical committee 64:
Electrical installations and protection against electric shock.
This fifth edition cancels and replaces the fourth edition, published in 2001, and constitutes a
technical revision.
The main changes with respect to the previous edition are listed below:
– adoption of IEC 61140 terminology;
– layout rationalized on basis of complete protective measures (i.e. appropriate practical
combinations of protective provision in normal service (direct contact protection) and
protective provision in case of a fault (indirect contact protection);

60364-4-41  IEC:2005 – 7 –
– requirements of 471 and 481, which were included in the fourth edition have been

rationalized
– disconnection requirements for TT systems clarified;

– IT systems considered more fully;

– requirements in certain cases for additional protection of socket-outlets by means of a

30 mA RCD, where the protective measure is automatic disconnection of supply.

The text of this standard is based on the following documents:

FDIS Report on voting
64/1489/FDIS 64/1500/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
It has the status of a group safety publication in accordance with IEC Guide 104.
The Part 4 series comprises the following parts under the general title Low-voltage electrical
installations:
Part 4-41: Protection for safety – Protection against electric shock
Part 4-42: Protection for safety – Protection against thermal effects
Part 4-43: Protection for safety – Protection against overcurrent
Part 4-44: Protection for safety – Protection against voltage disturbances and electromagnetic
disturbances
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
60364-4-41  IEC:2005 – 9 –
410 Introduction
This Part 4-41 of IEC 60364 deals with protection against electric shock as applied to

electrical installations. It is based on IEC 61140 which is a basic safety standard that applies

to the protection of persons and livestock. IEC 61140 is intended to give fundamental

principles and requirements that are common to electrical installations and equipment or are

necessary for their co-ordination.

The fundamental rule of protection against electric shock, according to IEC 61140, is that

hazardous-live-parts must not be accessible and accessible conductive parts must not be

hazardous live, neither under normal conditions nor under single fault conditions.
According to 4.2 of IEC 61140, protection under normal conditions is provided by basic
protective provisions and protection under single fault conditions is provided by fault
protective provisions. Alternatively, protection against electric shock is provided by an
enhanced protective provision, which provides protection under normal conditions and under
single fault conditions.
This standard has the status of a group safety publication (GSP) for protection against electric
shock.
In the fourth
...

NORME CEI
INTERNATIONALE 60364-4-41
Cinquième édition
2005-12
PUBLICATION GROUPÉE DE SÉCURITÉ
Installations électriques à basse tension –
Partie 4-41:
Protection pour assurer la sécurité –
Protection contre les chocs électriques

Cette version française découle de la publication d’origine
bilingue dont les pages anglaises ont été supprimées.
Les numéros de page manquants sont ceux des pages
supprimées.
Numéro de référence
CEI 60364-4-41:2005(F)
Numérotation des publications
Depuis le 1er janvier 1997, les publications de la CEI sont numérotées à partir de

60000. Ainsi, la CEI 34-1 devient la CEI 60034-1.

Editions consolidées
Les versions consolidées de certaines publications de la CEI incorporant les

amendements sont disponibles. Par exemple, les numéros d’édition 1.0, 1.1 et 1.2

indiquent respectivement la publication de base, la publication de base incorporant

l’amendement 1, et la publication de base incorporant les amendements 1 et 2

Informations supplémentaires sur les publications de la CEI
Le contenu technique des publications de la CEI est constamment revu par la CEI
afin qu'il reflète l'état actuel de la technique. Des renseignements relatifs à cette
publication, y compris sa validité, sont disponibles dans le Catalogue des
publications de la CEI (voir ci-dessous) en plus des nouvelles éditions, amende-
ments et corrigenda. Des informations sur les sujets à l’étude et l’avancement des
travaux entrepris par le comité d’études qui a élaboré cette publication, ainsi que la
liste des publications parues, sont également disponibles par l’intermédiaire de:
• Site web de la CEI (www.iec.ch)
• Catalogue des publications de la CEI
Le catalogue en ligne sur le site web de la CEI (www.iec.ch/searchpub) vous permet
de faire des recherches en utilisant de nombreux critères, comprenant des
recherches textuelles, par comité d’études ou date de publication. Des informations
en ligne sont également disponibles sur les nouvelles publications, les publications
remplacées ou retirées, ainsi que sur les corrigenda.
• IEC Just Published
Ce résumé des dernières publications parues (www.iec.ch/online_news/justpub)
est aussi disponible par courrier électronique. Veuillez prendre contact avec le
Service client (voir ci-dessous) pour plus d’informations.
• Service clients
Si vous avez des questions au sujet de cette publication ou avez besoin de
renseignements supplémentaires, prenez contact avec le Service clients:
Email: [e-mail]
Tél: [phone]
Fax: [phone]
NORME CEI
INTERNATIONALE 60364-4-41
Cinquième édition
2005-12
PUBLICATION GROUPÉE DE SÉCURITÉ
Installations électriques à basse tension –
Partie 4-41:
Protection pour assurer la sécurité –
Protection contre les chocs électriques

© IEC 2005 Droits de reproduction réservés
Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun
procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
CODE PRIX
V
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur

– 2 – 60364-4-41  CEI:2005
SOMMAIRE
AVANT-PROPOS.4

410 Introduction .8

410.1 Domaine d’application .10

410.2 Références normatives.10

410.3 Exigences générales .12

411 Mesure de protection: coupure automatique de l’alimentation.14

411.1 Généralités.14
411.2 Exigences pour la protection principale .16
411.3 Exigences pour la protection en cas de défaut.16
411.4Schéma TN.20
411.5 Schéma TT.22
411.6 Schéma IT.24
411.7 Très basse tension fonctionnelle (TBTF) .28
412 Mesure de protection: isolation double ou renforcée.30
412.1 Généralités.30
412.2 Exigences pour la protection principale et pour la protection en cas de défaut .32
413 Mesure de protection: séparation électrique .36
413.1 Généralités.36
413.2 Exigences pour la protection principale .36
413.3 Exigences pour la protection en cas de défaut.36
414 Protection par très basse tension (TBTS et TBTP).38
414.1 Généralités.38
414.2 Exigences pour la protection principale et pour la protection en cas de défaut .38
414.3 Sources pour TBTS et TBTP .40
414.4 Exigences pour les circuits TBTS et TBTP.40
415 Protection complémentaire .42
415.1 Protection complémentaire par dispositifs à courant différentiel-résiduel .44
415.2 Protection complémentaire: liaison équipotentielle supplémentaire.44

Annexe A (normative) Dispositions pour la protection principale .46
Annexe B (normative) Obstacles et mise hors de portée .50
Annexe C (normative) Mesures de protection dans des installations sous condition de
surveillance par des personnes qualifiées.54
Annexe D (informative) Correspondance entre la CEI 60364-4-41:2001 et la présente
norme .60

Bibliographie.64

Figure B.1 – Volume d'accessibilité.52

Tableau 41.1 – Temps de coupure maximaux .18
Tableau D.1 – Correspondance entre la CEI 60364-4-41:2001 et la présente norme.60

– 4 – 60364-4-41  CEI:2005
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE

____________
INSTALLATIONS ÉLECTRIQUES À BASSE TENSION –

Partie 4-41: Protection pour assurer la sécurité –

Protection contre les chocs électriques

AVANT-PROPOS
1) La Commission Electrotechnique Internationale (CEI) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de la CEI"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec la CEI, participent
également aux travaux. La CEI collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de la CEI
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de la CEI se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de la CEI. Tous les efforts raisonnables sont entrepris afin que la CEI
s'assure de l'exactitude du contenu technique de ses publications; la CEI ne peut pas être tenue responsable
de l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de la CEI s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de la CEI dans leurs publications
nationales et régionales. Toutes divergences entre toutes Publications de la CEI et toutes publications
nationales ou régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) La CEI n’a prévu aucune procédure de marquage valant indication d’approbation et n'engage pas sa
responsabilité pour les équipements déclarés conformes à une de ses Publications.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à la CEI, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de la CEI, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de la CEI ou de
toute autre Publication de la CEI, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de la CEI peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.

La Norme internationale CEI 60364-4-41 a été établie par le comité d'études 64 de la CEI:
Installations électriques et protection contre les chocs électriques.
Cette cinquième édition annule et remplace la quatrième édition publiée en 2001 et constitue
une révision technique.
Les principaux changements par rapport à l’édition précédente sont listés ci-dessous:
– adoption de la terminologie de la CEI 61140;
– présentation se fondant sur les mesures complètes de protection (par exemple
associations pratiques de dispositions de protection en fonctionnement normal (protection
contre les contacts directs) et dispositions de protection en cas de défaut (protection
contre les contacts indirects);

– 6 – 60364-4-41  CEI:2005
– exigences revues de 471 et de 481 inclus dans la quatrième édition;

– exigences de coupure en schéma TT clarifiées;

– schéma IT reconsidéré;
– exigences dans certains cas de protection complémentaire des socles de prise de courant

par DDR 30 mA si la mesure de protection par coupure automatique de l’alimentation est

requise.
Le texte de cette norme est issu des documents suivants:

FDIS Rapport de vote
64/1489/FDIS 64/1500/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette norme.
Cette publication a été rédigée selon les Directives ISO/CEI, Partie 2.
Elle a le statut de publication groupée de sécurité en accord avec le Guide CEI 104.
La série de la Partie 4 comprend les parties suivantes sous le titre général Installations
électriques à basse tension:
Partie 4-41: Protection pour assurer la sécurité – Protection contre les chocs électriques
Partie 4-42: Protection pour assurer la sécurité – Protection contre les effets thermiques
Partie 4-43: Protection pour assurer la sécurité – Protection contre les surintensités
Partie 4-44: Protection pour assurer la sécurité – Protection contre les perturbations de
tension et les perturbations électromagnétiques
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant la date de
maintenance indiquée sur le site web de la CEI sous "http://webstore.iec.ch" dans les
données relatives à la publication recherchée. A cette date, la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.
– 8 – 60364-4-41  CEI:2005
410 Introduction
La présente Partie 4-41 de la CEI 60364 traite de la protection contre les chocs électriques

dans les installations électriques. Elle se fonde sur la CEI 61140 qui est une norme

fondamentale de sécurité applicable à la protection des personnes et des animaux

domestiques. La CEI
...

COR1:2018  IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
IEC 60364-4-41 IEC 60364-4-41
Edition 5.1  2017-03 Édition 5.1  2017-03

Low voltage electrical installations – Installations électriques à basse tension –

Part 4-41: Protection for safety – Partie 4-41: Protection pour ass
...

IEC 60364-4-41
Edition 5.0 2005-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ
Low-voltage electrical installations –
Part 4-41: Protection for safety – Protection against electric shock

Installations électriques à basse tension –
Partie 4-41: Protection pour assurer la sécurité – Protection contre les chocs
électriques
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
ƒ Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
ƒ IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
ƒ Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
ƒ Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
ƒ Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
ƒ Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
ƒ Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
ƒ Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: [e-mail]
Tél.: [phone]
Fax: [phone]
IEC 60364-4-41
Edition 5.0 2005-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ
Low-voltage electrical installations –
Part 4-41: Protection for safety – Protection against electric shock

Installations électriques à basse tension –
Partie 4-41: Protection pour assurer la sécurité – Protection contre les chocs
électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 13.260; 91.140.50 ISBN 2-8318-8383-0

– 2 – 60364-4-41 © IEC:2005
CONTENTS
FOREWORD.3

410 Introduction .5
410.1 Scope .6
410.2 Normative references .6
410.3 General requirements .7
411 Protective measure: automatic disconnection of supply .8
411.1 General .8
411.2 Requirements for basic protection .9
411.3 Requirements for fault protection .9
411.4 TN systems.11
411.5 TT systems.12
411.6 IT systems.13
411.7 Functional extra-low voltage (FELV) .15
412 Protective measure: double or reinforced insulation.16
412.1 General .16
412.2 Requirements for basic protection and fault protection (protection against
indirect contact).17
413 Protective measure: electrical separation .19
413.1 General .19
413.2 Requirements for basic protection .19
413.3 Requirements for fault protection .19
414 Protective measure: extra-low-voltage provided by SELV and PELV.20
414.1 General .20
414.2 Requirements for basic protection and fault protection .20
414.3 Sources for SELV and PELV.21
414.4 Requirements for SELV and PELV circuits.21
415 Additional protection.22
415.1 Additional protection: residual current protective devices (RCDs) .23
415.2 Additional protection: supplementary protective equipotential bonding.23

Annex A (normative) Provisions for basic protection (protection against direct contact) .24
Annex B (normative) Obstacles and placing out of reach .26
Annex C (normative) Protective measures for application only when the installation is
controlled or under the supervision of skilled or instructed persons.28
Annex D (informative) Correspondence between IEC 60364-4-41(2001) and the present
standard.…. .61

Bibliography.

Figure B.1 – Zone of arm's reach .27

Table 41.1 – Maximum disconnection times .10
Table D.1 – Correspondence between IEC 60364-4-41:2001 and the present standard .61

60364-4-41 © IEC:2005 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 4-41: Protection for safety –
Protection against electric shock

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60364-4-41 has been prepared by IEC technical committee 64:
Electrical installations and protection against electric shock.
This fifth edition cancels and replaces the fourth edition, published in 2001, and constitutes a
technical revision.
The main changes with respect to the previous edition are listed below:
– adoption of IEC 61140 terminology;
– layout rationalized on basis of complete protective measures (i.e. appropriate practical
combinations of protective provision in normal service (direct contact protection) and
protective provision in case of a fault (indirect contact protection);

– 4 – 60364-4-41 © IEC:2005
– requirements of 471 and 481, which were included in the fourth edition have been
rationalized
– disconnection requirements for TT systems clarified;
– IT systems considered more fully;
– requirements in certain cases for additional protection of socket-outlets by means of a
30 mA RCD, where the protective measure is automatic disconnection of supply.
The text of this standard is based on the following documents:
FDIS Report on voting
64/1489/FDIS 64/1500/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
It has the status of a group safety publication in accordance wit
...

IEC 60364-4-41 ®
Edition 5.1 2017-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Low-voltage electrical installations –
Part 4-41: Protection for safety – Protection against electric shock

Installations électriques à basse tension –
Partie 4-41: Protection pour assurer la sécurité – Protection contre les chocs
électriques
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient 20 000 termes et définitions en anglais
Spécifications techniques, Rapports techniques et autres
et en français, ainsi que les termes équivalents dans 16
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC
65 000 entrées terminologiques électrotechniques, en anglais
en utilisant différents critères (numéro de référence, texte,
et en français, extraites des articles Termes et Définitions des
comité d’études,…). Elle donne aussi des informations sur les
publications IEC parues depuis 2002. Plus certaines entrées
projets et les publications remplacées ou retirées.
antérieures extraites des publications des CE 37, 77, 86 et

CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Restez informé sur les nouvelles publications IEC. Just Service Clients - webstore.iec.ch/csc
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 60364-4-41 ®
Edition 5.1 2017-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Low-voltage electrical installations –

Part 4-41: Protection for safety – Protection against electric shock

Installations électriques à basse tension –

Partie 4-41: Protection pour assurer la sécurité – Protection contre les chocs

électriques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.260; 91.140.50 ISBN 978-2-8322-4126-4

IEC 60364-4-41 ®
Edition 5.1 2017-03
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Low-voltage electrical installations –
Part 4-41: Protection for safety – Protection against electric shock

Installations électriques à basse tension –
Partie 4-41: Protection pour assurer la sécurité – Protection contre les chocs
électriques
– 2 – IEC 60364-4-41:2005+AMD1:2017 CSV
 IEC 2017
CONTENTS
FOREWORD . 3
410 Introduction . 5
410.1 Scope . 6
410.2 Normative references . 6
410.3 General requirements . 7
411 Protective measure: automatic disconnection of supply . 8
411.1 General . 8
411.2 Requirements for basic protection . 8
411.3 Requirements for fault protection . 9
411.4 TN system . 11
411.5 TT system. 13
411.6 IT system . 14
411.7 Functional extra-low voltage (FELV) . 16
412 Protective measure: double or reinforced insulation . 17
412.1 General . 17
412.2 Requirements for basic protection and fault protection . 18
413 Protective measure: electrical separation . 20
413.1 General . 20
413.2 Requirements for basic protection . 20
413.3 Requirements for fault protection . 20
414 Protective measure: extra-low-voltage provided by SELV and PELV . 21
414.1 General . 21
414.2 Requirements for basic protection and fault protection . 21
414.3 Sources for SELV and PELV . 22
414.4 Requirements for SELV and PELV circuits . 22
415 Additional protection . 23
415.1 Additional protection: residual current protective devices (RCDs) . 23
415.2 Additional protection: supplementary protective equipotential bonding . 23
Annex A (normative) Provisions for basic protection . 25
Annex B (normative) Obstacles and placing out of reach . 27
Annex C (normative) Protective measures for application only when the installation is
controlled or under the supervision of skilled or instructed persons . 29
Annex D (informative) Correspondence between IEC 60364-4-41:2001 and the present
standard .
Annex D (normative) Provisions where automatic disconnection according to 411.3.2
is not feasible . 34
Annex E (informative) List of notes concerning certain countries . 35
Bibliography . 39

Figure B.1 – Zone of arm's reach . 28

Table 41.1 – Maximum disconnection times . 10
Table D.1 – Correspondence between IEC 60364-4-41:2001 and the present standard .

 IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –
Part 4-41: Protection for safety –
Protection against electric shock
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carrie
...