prEN IEC 60947-2:2022

SLOVENSKI STANDARD
oSIST prEN IEC 60947-2:2022
01-september-2022
Nizkonapetostne stikalne in krmilne naprave - 2. del: Odklopniki
Low-voltage switchgear and controlgear - Part 2: Circuit-breakers
Niederspannungsschaltgeräte - Teil 2: Leistungsschalter
Appareillage à basse tension - Partie 2: Disjoncteurs
Ta slovenski standard je istoveten z: prEN IEC 60947-2:2022
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
oSIST prEN IEC 60947-2:2022 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 60947-2:2022

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oSIST prEN IEC 60947-2:2022
121A/482/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60947-2 ED6
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-06-03 2022-08-26
SUPERSEDES DOCUMENTS:
121A/437/CD, 121A/449B/CC

IEC SC 121A : LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR
SECRETARIAT: SECRETARY:
France Mr Michaël LAHEURTE
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

SC 23E
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:
Low-voltage switchgear and controlgear - Part 2: Circuit-breakers

PROPOSED STABILITY DATE: 2026

NOTE FROM TC/SC OFFICERS:
SC121A Officers support circulation of CDV for project IEC 60947-2 ED6.
Secretary Note: NC experts are kindly requested to refer their comments to line numbers.

Copyright © 2022 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 60947-2:2022
IEC CDV 60947-2 © IEC 2022 2 121A/482/CDV

1 CONTENTS
2 FOREWORD . 16
3 1 Scope . 18
4 2 Normative references . 19
5 3 Terms and definitions . 20
6 4 Classification . 24
7 4.1 According to their selectivity category, A or B (see 5.4) . 24
8 4.2 According to the method of controlling the operating mechanism: . 24
9 4.3 According to the provision for maintenance: . 24
10 4.4 According to the method of installation:. 24
11 4.5 According to the degree of protection provided by the enclosure (see 8.1.12
12 of IEC 60947-1:2020) . 24
13 5 Characteristics of circuit-breakers. 24
14 5.1 Summary of characteristics . 24
15 5.2 Type of circuit-breaker . 24
16 5.3 Rated and limiting values of the main circuit . 24
17 5.3.1 General. 24
18 5.3.2 Rated voltages . 25
19 5.3.3 Currents.
...