IEC 62423:2007

INTERNATIONAL IEC
STANDARD
CEI
NORME
First edition
INTERNATIONALE
Première édition
2007-05
Type B residual current operated circuit-breakers
with and without integral overcurrent protection
for household and similar uses (Type B RCCBs
and Type B RCBOs)
Interrupteurs automatiques à courant différentiel
résiduel de Type B avec et sans protection contre
les surintensités incorporée pour usages
domestiques et analogues (ID et DD de Type B)

Reference number
Numéro de référence
IEC/CEI 62423:2007
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INTERNATIONAL IEC
STANDARD
CEI
NORME
First edition
INTERNATIONALE
Première édition
2007-05
Type B residual current operated circuit-breakers
with and without integral overcurrent protection
for household and similar uses (Type B RCCBs
and Type B RCBOs)
Interrupteurs automatiques à courant différentiel
résiduel de Type B avec et sans protection contre
les surintensités incorporée pour usages
domestiques et analogues (ID et DD de Type B)

PRICE CODE
U
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
Pour prix, voir catalogue en vigueur

– 2 – 62423 © IEC:2007
CONTENTS
FOREWORD.4

INTRODUCTION.6

1 Scope.7

2 Normative references .7

3 Terms and definitions .8

4 Classification.8

5 Characteristics .8
5.1 Type B residual current device .8
5.2 Standard values of break time and non-actuating time for residual direct
currents which result from rectifying circuits and for residual smooth direct
current .9
5.3 Standard values of tripping current according to frequencies which differ
from the rated frequency 50/60 Hz .9
6 Marking and other product information.10
7 Standard conditions for operation in service and for installation.10
8 Conditions for construction and operation.10
8.1 Operation in response to the type of residual current.10
8.1.1 Residual sinusoidal alternating currents up to 1 000 Hz.10
8.1.2 Residual alternating current superimposed on a residual smooth
direct current .10
8.1.3 Residual pulsating direct current superimposed on a smooth direct
current.10
8.1.4 Residual pulsating direct currents which may result from rectifying
circuits supplied from two phases .11
8.1.5 Residual pulsating direct currents which may result from rectifying
circuits supplied from three phases .11
8.1.6 Residual smooth direct current .11
9 Tests .11
9.1 Verification of the operating characteristic at the reference temperature
(20 ± 5) °C .11
9.1.1 Verification of the correct operation in case of residual sinusoidal
alternating currents up to 1 000 Hz.12
9.1.2 Verification of the correct operation in the case of a residual
alternating current superimposed on a residual smooth direct current.12
9.1.3 Verification of the correct operation in the case of a residual
pulsating direct current superimposed on a residual smooth direct
current.12
9.1.4 Verification of the correct operation in case of residual direct currents
which may result from rectifying circuits supplied from two phases .13
9.1.5 Verification of the correct operation in case of residual direct currents
which may result from rectifying circuits supplied from three phases .13
9.1.6 Verification of the correct operation in case of residual smooth direct
current.13
9.2 Tests at the temperature limits .14
9.3 Verification of the RCD after test sequences .14

62423 © IEC:2007 – 3 –
Annex A (normative) Number of samples to be submitted and test sequences to be

applied for verification of conformity for type B RCCBs .21

Annex B (normative) Number of samples to be submitted and test sequences to be

applied for verification of conformity for type B RCBOs .23

Annex C (normative) Routine tests.25

Bibliography.26

Table 1 – Standard values of break time and non-actuating time for residual direct
currents which result from rectifying circuits and for residual smooth direct current.9
Table 2 – Residual non-operating and operating current according to frequencies
which differ from the rated frequency 50/60 Hz .9
Table A.1 – Test sequences for type B RCCBs .21
Table B.1 – Test sequences for type B RCBOs .23

Figure 1 – Test circuit for the verification of correct operation in case of residual
sinusoidal alternating current up to 1 000 Hz .15
Figure 2 – Test circuit for the verification of correct operation in case of a residual
alternating current superimposed on a smooth direct current .16
Figure 3 – Test circuit for the verification of correct operation in case of a residual
pulsating direct current superimposed on a smooth direct current .17
Figure 4a – Test circuit for the verification of the correct operation in case of residual
pulsating direct currents which may result from rectifying circuits supplied from two
phases.18
Figure 4b – Test circuit for the verification of the correct operation in case of residual
pulsating direct currents which may result from rectifying circuits supplied from three
phases.19
Figure 4 – Test circuit for the verification of the correct operation in case of residual
pulsating direct currents which may result from rectifying circuits supplied from two or
three phases.19
Figure 5 – Verification of the correct operation in case of a residual smooth direct

current .20

– 4 – 62423 © IEC:2007
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
TYPE B RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS

WITH AND WITHOUT INTEGRAL OVERCURRENT PROTECTION

FOR HOUSEHOLD AND SIMILAR USES

(TYPE B RCCBs AND TYPE B RCBOs)

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,
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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 acc
...