HD 60364-5-537:2016

SLOVENSKI STANDARD
01-januar-2017
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SIST HD 384.5.537 S2:2002
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Low voltage electrical installations - Part 5-53: Selection and erection of electrical
equipment - Switchgear and controlgear - Clause 537: Isolation and switching
Errichten von Niederspannungsanlagen - Teil 5: Auswahl und Errichtung elektrischer
Betriebsmittel - Kapitel 53: Schaltgeräte und Steuergeräte - Abschnitt 537: Geräte zum
Trennen und Schalten
Installations électriques basse tension - Partie 5-53: Choix et mise en œuvre des
matériels - Appareillage - Article 537: Sectionnement et coupure
Ta slovenski standard je istoveten z: HD 60364-5-537:2016
ICS:
29.130.01 Stikalne in krmilne naprave Switchgear and controlgear
na splošno in general
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT HD 60364-5-537

DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
November 2016
ICS 29.120.50; 91.140.50 Supersedes HD 384.5.537 S2:1998
English Version
Low-voltage electrical installations -
Part 5-53: Selection and erection of electrical equipment -
Devices for protection, isolation, switching, control and
monitoring - Clause 537: Isolation and switching
Installations électriques basse tension -  Errichten von Niederspannungsanlagen -
Partie 5-53: Choix et mise en œuvre des matériels - Teil 5-53: Auswahl und Errichtung elektrischer
Appareillage - Article 537: Sectionnement et coupure Betriebsmittel - Schaltgeräte und Steuergeräte -
Abschnitt 537: Geräte zum Trennen und Schalten
This Harmonization Document was approved by CENELEC on 2016-07-04. CENELEC members are bound to comply with the
CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on application to the CEN-
CENELEC Management Centre or to any CENELEC member.
This Harmonization Document exists in three official versions (English, French, German).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. HD 60364-5-537:2016 E

Contents Page
European foreword .3
537 Devices for isolation and switching .4
537.0 Introduction .4
537.0.1 Scope .4
537.0.2 Normative references .4
537.1 General .6
537.2 Devices for isolation .6
537.3 Devices for switching .7
537.3.1 Functional switching and control devices .7
537.3.2 Switching-off devices for mechanical maintenance .7
537.3.3 Devices for emergency switching off .8
537.4 Firefighter’s switches.8
Annex A (normative) Devices for isolation and switching .9
Annex B (informative)  Firefighter’s switches . 11
Annex C (normative)  Special national conditions . 12
Annex D (informative)  A-deviations . 16

European foreword
This document (HD 60364-5-537:2016) was prepared by CLC/TC 64 “Electrical installations and
protection against electric shock”.
The following dates are fixed:
— latest date by which the document has to be implemented (dop) 2017-05-11
at national level by publication of an identical national
standard or by endorsement
— latest date by which the national standards conflicting with (dow) 2019-11-11
the document have to be withdrawn
This document supersedes HD 384.5.537 S2:1998.
edition: the contents of this document has been adapted to give requirements on implementation of
the measures provided in HD 60364-4-46:2016 and requirements for proper functioning, in terms of
selection and erection of electrical equipment for isolation and switching. Another significant technical
change is the introduction of Annex A.
NOTE Complementarily, the text of HD 60364-4-46:2016 has been revised so that it only includes general
requirements on measures for isolation and switching to provide for the safety of persons, livestock and property.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
537 Devices for isolation and switching
537.0 Introduction
537.0.1 Scope
This part of HD 60364 deals with general requirements for isolation and switching and with the
requirements for selection and erection of the devices provided to fulfil such functions.
537.0.2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 60269 / HD 60269 / CLC/TR 60269 series, Low-voltage fuses (IEC 60269 series)
EN 60309 (series), Plugs, socket-outlets and couplers for industrial purposes (IEC 60309 series)
EN 60669-1, Switches for household and similar fixed-electrical installations – Part 1: General
requirements (IEC 60669-1)
EN 60669-2-1, Switches for household and similar fixed electrical installations – Part 2-1: Particular
requirements – Electronic switches (IEC 60669-2-1)
EN 60669-2-2, Switches for household and similar fixed electrical installations – Part 2-2: Particular
requirements – Electromagnetic remote-control switches (RCS) (IEC 60669-2-2)
EN 60669-2-3, Switches for household and similar fixed electrical installations – Part 2-3: Particular
requirements – Time delay switches (TDS) (IEC 60669-2-3)
EN 60669-2-4, Switches for household and similar fixed electrical installations – Part 2-4: Particular
requirements – Isolating switches (IEC 60669-2-4)
EN 60669-2-5, Switches for household and similar fixed electrical installations – Part 2-5: Particular
requirements – Switches and related accessories for use in home and building electronic systems
(HBES) (IEC 60669-2-5)
EN 60669-2-6, Switches for household and similar fixed electrical installations – Part 2-6: Particular
requirements – Fireman's switches for exterior and interior signs and luminaires (IEC 60669-2-6)
EN 60898-1, Electrical accessories – Circuit breakers for overcurrent protection for household and
similar installations – Part 1: Circuit-breakers for a.c. operation (IEC 60898-1)
EN 60898-2, Electrical accessories – Circuit breakers for overcurrent protection for household and
similar installations – Part 2: Circuit-breakers for a.c. and d.c. operation (IEC 60898-2)
EN 60947-2, Low-voltage switchgear and controlgear – Part 2: Circuit-breakers (IEC 60947-2)
EN 60947-3, Low-voltage switchgear and controlgear – Part 3: Switches, disconnectors, switch-
disconnectors and fuse-combination units (IEC 60947-3)
EN 60947-4-1, Low-voltage switchgear and controlgear – Part 4-1: Contactors and motor-starters –
Electromechanical contactors and motor-starters (IEC 60947-4-1)
EN 60947-4-2, Low-voltage switchgear and controlgear – Part 4-2: Contactors and motor-starters –
AC semiconductor motor controllers and starters (IEC 60947-4-2)
EN 60947-4-3, Low-voltage switchgear and controlgear – Part 4-3: Contactors and motor-starters –
AC semiconductor controllers and contactors for non-motor loads (IEC 60947-4-3)
EN 60947-5-1, Low-voltage switchgear and controlgear – Part 5-1: Control circuit devices and
switching elements – Electromechanical control circuit devices (IEC 60947-5-1)
EN 60947-6-1, Low-voltage switchgear and controlgear – Part 6-1: Multiple function equipment –
Transfer switching equipment (IEC 60947-6-1)
EN 60947-6-2, Low-voltage switchgear and controlgear – Part 6-2: Multiple function equipment –
Control and protective switching devices (or equipment) (CPS) (IEC 60947-6-2)
EN 60947-7-1, Low-voltage switchgear and controlgear – Part 7-1: Ancillary equipment – Terminal
blocks for copper conductors (IEC 60947-7-1)
EN 61008-2-1, Residual current operated circuit-breakers without integral overcurrent protection for
household and similar uses (RCCB's) – Part 2-1: Applicability of the general rules to RCCB's
functionally independent of line voltage (IEC 61008-2-1)
EN 61009-2-1, Residual current operated circuit-breakers with integral overcurrent protection for
household and similar uses (RCBO's) – Part 2-1: Applicability of the general rules to RCBO's
functionally independent of line voltage (IEC 61009-2-1)
EN 61095, Electromechanical contactors for household and similar purposes (IEC 61095)
EN 61984:2009, Connectors – Safety requirements and tests (IEC 61984:2008)
EN 61995 (series), Devices for the connection of luminaires for household and similar purposes
(IEC 61995 series)
EN 62423, Type F and type B residual current operated circuit-breakers with and without integral
overcurrent protection for household and similar uses (IEC 62423)
EN 62606, General requirements for arc fault detection devices (IEC 62606)
EN 62626-1, Low-voltage switchgear and controlgear enclosed equipment – Part 1: Enclosed switch-
disconnectors outside the scope of IEC 60947-3 to provide isolation during repair and maintenance
work (IEC 62626-1)
HD 60364-4-46:2016, Low-voltage electrical installations – Part 4-46: Protection for safety – Isolation
and switching
IEC 60417, Graphical symbols for use on equipment
IEC 60884 (series), Plugs and socket-outlets for household and similar purposes
IEC 60906 (series), IEC system of plugs and socket-outlets for household and similar purposes
537.1 General
537.1.1 Any device for isolation and switching according to Clauses 462 to 465 of
HD 60364-4-46:2016 shall comply with the relevant requirements included in this clause.
In certain instances, additional requirements may be necessary for combined functions.
NOTE 1 Table A.1 summarizes the functions provided by the devices for isolation and switching, together with
indication of the relevant product standards.
NOTE 2 For some applications such as motor control, the switching device needs to withstand the inrush
current.
537.1.2 Where an installation or an item of equipment or enclosure contains live parts connected to
more than one supply, a durable warning notice shall be placed in such a position that any person
before gaining access to live parts, will be warned of the need to isolate those parts from the various
supplies unless an interlocking arrangement is provided to ensure that all the circuits concerned are
isolated.
537.1.3 Plugs and socket-outlets, connectors and devices for connection of luminaires may be used
for providing the isolation and switching functions in accordance with Annex A.
The isolation and switching functions are provided by the disconnection of the plug from the outlet or
connector from the inlet as applicable.
537.2 Devices for isolation
537.2.1 Devices for isolation shall be devices for which the isolation function is explicitly recognized
by the relevant product standard.
The devices providing isolation function shall be selected in accordance with Annex A.
537.2.2 Semiconductor devices shall not be used as isolating devices.
537.2.3 Devices suitable for isolation shall be selected according to the requirements that are based
on the overvoltage categories applicable at their point of installation.
Devices for isolation shall be designed for over voltage category III or IV except the plug of a plug and
socket-outlet combination identified in Table A.1 as suitable for isolation.
NOTE Examples of overvoltage categories for devices are given in HD 60364–4-443.
Devices used for isolation shall comply with 537.2.4 to 537.2.8.
537.2.4 Devices for isolation shall
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