IEC 62626-1:2023

Low-voltage switchgear and controlgear enclosed equipment - Part 1: Additional requirements for enclosed switch-disconnectors in accordance with IEC 60947-3 - Isolation of electrical equipment during repair and maintenance work in specific applications

IEC 62626-1:2023 applies to enclosed switches-disconnectors with rated voltages up to 1 000 V AC for repair and maintenance work or cleaning work in load circuits. Devices within the scope of this document are switch-disconnectors in accordance with IEC 60947-3 with specific additional requirements. Enclosed switch-disconnectors in this document are suitable for isolation in accordance with the IEC 60947 series and are not equipped with means for remote control or automatic switching to avoid unexpected or accidental start. These devices are not used for operational switching, for example quick start and stop, jogging. This second edition cancels and replaces the first edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) update of this document based on IEC 60947-1:2020.

Appareillage à basse tension sous enveloppe - Partie 1: Exigences supplémentaires relatives aux interrupteurs‑sectionneurs sous enveloppe conformes à l’IEC 60947-3 - Isolation du matériel électrique lors des travaux de réparation et de maintenance dans des applications spécifiques

L’IEC 62626-1:2023 s'applique aux interrupteurs-sectionneurs sous enveloppe ayant une tension assignée inférieure ou égale à 1 000 V en courant alternatif, pour les travaux de réparation et de maintenance ou pour les opérations de nettoyage de circuits de charge. Les appareils relevant du domaine d'application du présent document sont les interrupteurs‑sectionneurs conformes à l’IEC 60947-3 avec des exigences supplémentaires. Les interrupteurs-sectionneurs sous enveloppe conformes au présent document conviennent à une isolation conforme à la série IEC 60947 et ne sont pas équipés de dispositif de commande à distance ou de commutation automatique, en vue d’éviter des démarrages intempestifs ou accidentels. Ces appareils ne sont pas utilisés pour une commande fonctionnelle, par exemple un démarrage et un arrêt rapides ou un fonctionnement par à-coups.
Cette deuxième édition annule et remplace la première édition parue en 2014. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) mise à jour du présent document fondée sur l’IEC 60947-1:2020.

General Information

• Status: Published
• Publication Date: 06-Nov-2023
• ICS: 29.120.40 - Switches
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: SC 121A - Low-voltage switchgear and controlgear
• Drafting Committee: MT 6 - TC 121/SC 121A/MT 6
• Current Stage: PPUB - Publication issued
• Start Date: 08-Dec-2023
• Completion Date: 07-Nov-2023

Relations

• Revises: IEC 62626-1:2014 - 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
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62626-1 ®
Edition 2.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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
Additional requirements for enclosed switch-disconnectors in accordance with
IEC 60947-3 – Isolation of electrical equipment during repair and maintenance
work in specific applications
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.

IEC Secretariat Tel.: [phone]
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CH-1211 Geneva 20 www.iec.ch
Switzerland
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
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IEC 62626-1 ®
Edition 2.0 2023-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
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
Additional requirements for enclosed switch-disconnectors in accordance with
IEC 60947-3 – Isolation of electrical equipment during repair and maintenance
work in specific applications
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.40, 29.130.20 ISBN 978-2-8322-7829-1
– 2 – IEC 62626-1:2023 RLV © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 2
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Classification . 8
5 Characteristics . 8
6 Product information . 8
6.1 Nature of information . 8
6.2 Markings . 8
6.2.1 Front-marking . 8
6.2.2 Additional marking . 8
7 Normal service, mounting and transport conditions Void . 9
8 Constructional and performance requirements . 9
8.1 Constructional requirements . 9
8.1.1 General . 9
8.1.2 Locking . 9
8.1.3 Environmental influences . 9
8.1.4 Mechanical strength. 9
8.1.5 Degree of protection . 10
8.1.6 Operation/actuation . 10
8.2 Performance requirements . 10
8.2.1 General . 10
8.2.2 Switching capacity . 10
9 Tests . 10
9.1 General . 10
9.2 Type tests . 10
Bibliography . 12

Figure 1 – Symbol for marking in accordance with this document . 8

Table 1 – Requirements and tests for devices . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
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
Additional requirements for enclosed switch-disconnectors in accordance
with IEC 60947-3 – Isolation of electrical equipment during repair and
maintenance work in specific applications

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 carried out by independent certification bodies.
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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 62626-1:2014. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
– 4 – IEC 62626-1:2023 RLV © IEC 2023
IEC 62626-1 has been prepared by subcommittee SC121A: Low-voltage switchgear and
controlgear, of IEC technical committee 121: Switchgear and controlgear and their assemblies
for low voltage. It is an International Standard.
This second edition cancels and replaces the first edition published in 2014. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) update of this document based on IEC 60947-1:2020.
The text of this International Standard is based on the following documents:
Draft Report on voting
121A/569/FDIS 121A/581/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62626 series, published under the general title Low-voltage
switchgear and controlgear enclosed equipment, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

INTRODUCTION
Enclosed switch-disconnectors covered by this part of IEC 62626 are intended for use in various
applications, to provide isolation of electrical equipment, especially motor circuits, during repair,
cleaning and maintenance works.
Such enclosed switch-disconnectors are sometimes known as “maintenance switches”, or
“safety switches”. The name “safety switch” is also used for safety related position switches,
inspection switches and switches for other applications, which are not covered by this
document.
This part of IEC 62626 specifies additional requirements for enclosed switch-disconnectors in
accordance with IEC 60947-3 to provide isolation of electrical equipment during repair and
maintenance work.
Enclosed switch-disconnectors in accordance with this document are mounted close to the
equipment which has
...

IEC 62626-1 ®
Edition 2.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear enclosed equipment –
Part 1: Additional requirements for enclosed switch-disconnectors in
accordance with IEC 60947-3 – Isolation of electrical equipment during repair
and maintenance work in specific applications

Appareillage à basse tension sous enveloppe –
Partie 1: Exigences supplémentaires relatives aux interrupteurs‑sectionneurs
sous enveloppe conformes à l’IEC 60947-3 – Isolation du matériel électrique lors
des travaux de réparation et de maintenance dans des applications spécifiques
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
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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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 corrigendum or an amendment might have been published.

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details all new publications released. Available online and once
and French, with equivalent terms in 19 additional languages.
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IEC 62626-1 ®
Edition 2.0 2023-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear enclosed equipment –

Part 1: Additional requirements for enclosed switch-disconnectors in

accordance with IEC 60947-3 – Isolation of electrical equipment during repair

and maintenance work in specific applications

Appareillage à basse tension sous enveloppe –

Partie 1: Exigences supplémentaires relatives aux interrupteurs‑sectionneurs

sous enveloppe conformes à l’IEC 60947-3 – Isolation du matériel électrique lors

des travaux de réparation et de maintenance dans des applications spécifiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.40, 29.130.20 ISBN 978-2-8322-7782-9

– 2 – IEC 62626-1:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Classification . 7
5 Characteristics . 8
6 Product information . 8
6.1 Nature of information . 8
6.2 Markings . 8
6.2.1 Front-marking . 8
6.2.2 Additional marking . 8
7 Void . 9
8 Constructional and performance requirements . 9
8.1 Constructional requirements . 9
8.1.1 General . 9
8.1.2 Locking . 9
8.1.3 Environmental influences . 9
8.1.4 Mechanical strength. 9
8.1.5 Degree of protection . 9
8.1.6 Operation/actuation . 9
8.2 Performance requirements . 9
8.2.1 General . 9
8.2.2 Switching capacity . 9
9 Tests . 9
9.1 General . 9
9.2 Type tests . 10
Bibliography . 11

Figure 1 – Symbol for marking in accordance with this document . 8

Table 1 – Requirements and tests for devices . 10

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR
ENCLOSED EQUIPMENT –
Part 1: Additional requirements for enclosed switch-disconnectors in
accordance with IEC 60947-3 – Isolation of electrical equipment during
repair and maintenance work in specific applications

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 carried out by independent certification bodies.
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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 62626-1 has been prepared by subcommittee SC121A: Low-voltage switchgear and
controlgear, of IEC technical committee 121: Switchgear and controlgear and their assemblies
for low voltage. It is an International Standard.
This second edition cancels and replaces the first edition published in 2014. This edition
constitute
...