IEC 62626-1:2023

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
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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
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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.
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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
...