EN 62423:2009

SLOVENSKI STANDARD
01-december-2009
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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) (IEC
62423:2007, modified)
Typ B Fehlerstsrom-/Differenzstrom-Schutzschalter mit und ohne eingebautem
Überstromschutz für Hausinstallationen und für ähnliche Anwendungen (Typ B RCCBs
und Typ B RCBOs) (IEC 62423:2007, modifiziert)
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) (CEI 62423:2007, modifiée)
Ta slovenski standard je istoveten z: EN 62423:2009
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 62423
NORME EUROPÉENNE
October 2009
EUROPÄISCHE NORM
ICS 29.120; 29.120.50
English version
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)
(IEC 62423:2007, modified)
Interrupteurs automatiques  Typ B Fehlerstsrom-/Differenzstrom-
à courant différentiel résiduel de Type B Schutzschalter mit und ohne eingebautem
avec et sans protection contre Überstromschutz für Hausinstallationen
les surintensités incorporée und für ähnliche Anwendungen
pour usages domestiques et analogues (Typ B RCCBs und Typ B RCBOs)
(ID et DD de Type B) (IEC 62423:2007, modifiziert)
(CEI 62423:2007, modifiée)
This European Standard was approved by CENELEC on 2009-07-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62423:2009 E
Foreword
The text of the International Standard IEC 62423:2007, prepared by SC 23E, Circuit-breakers and
similar equipment for household use, of IEC TC 23, Electrical accessories, together with the common
modifications prepared by the Technical Committee CENELEC TC 23E, Circuit breakers and similar
devices for household and similar applications, was submitted to the Unique Acceptance Procedure
and was approved by CENELEC as EN 62423 on 2009-07-01.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-07-01
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive 2004/108/EC. See Annex ZZ.
Clauses, subclauses, notes, tables and figures which are additional to those in IEC 62423 are
prefixed “Z”.
Annexes ZA, ZB and ZZ have been added by CENELEC.
__________
- 3 - EN 62423:2009
Endorsement notice
The text of the International Standard IEC 62423:2007 was approved by CENELEC as a European
Standard with agreed common modifications as given below.
COMMON MODIFICATIONS
Contents Add:
9.Z1 Electromagnetic compatibility (EMC)
Annex ZA Normative references to international publications
with their corresponding European publications
Annex ZB Special national conditions
Annex ZZ Coverage of Essential Requirements of EC Directives
Table Z1 Tests to be applied for EMC
Table A.Z1
Table A.Z2 Number of samples for full test procedure
Table A.Z3 Number of samples for simplified test procedure
Table B.Z1
Table B.Z2 Number of samples for full test procedure
Table B.Z3 Number of samples for simplified test procedure
1 Scope
Replace the first two paragraphs by the following new paragraphs:
The scope of EN 61008-1 and EN 61008-2-1 or EN 61009-1 and EN 61009-2-1 applies.
This standard specifies requirements and tests for type B RCDs. Requirements and
tests given in this standard are in addition to the requirements of type A residual current
devices according to EN 61008-2-1 or EN 61009-2-1. Type B RCCBs and type B RCBOs
are able to provide protection in case of alternating residual sinusoidal currents up to
1 000 Hz, pulsating direct residual currents and smooth direct residual currents in case
of three phase supply.
Delete the fifth paragraph.
Replace note 2 by the following new note:

NOTE 2 Requirements for 2 poles devices are under consideration.
5 Characteristics
5.3 Delete the value "60 Hz" three times: in the title of 5.3, in the title of Table 2 and in
note 4 of Table 2.
9 Tests
9.2 Delete the third paragraph.

9.Z1 Add the new following subclause:
9.Z1 Electromagnetic compatibility (EMC)
EMC tests shall be performed according to EN 61543 as follows:
– Tests listed in the following table are covered by EN 61008-1 or EN 61009-1 as
applicable and have not to be repeated:
Table Z1 – Tests to be applied for EMC
Reference to Tables 4
Electromagnetic phenomena Tests of EN 61008-1 Tests of EN 61009-1
and 5 of EN 61543
T 1.3 Voltage amplitude variations 9.9.5 and 9.17 9.9.1.5 and 9.17
T 1.4 Voltage unbalance 9.9.5 and 9.17 9.9.1.5 and 9.17
T 1.5 Power frequency variations 9.2 9.2
T 1.8 Magnetic fields 9.11 and 9.18 9.12 and 9.18
T 2.4 Current oscillatory transients 9.19 9.19

– The remaining tests in Tables 4, 5 and 6 of EN 61543 shall be done according to

the test sequences Z1, Z2 and Z3 listed in Annex A or B of this standard.
For devices containing a continuously operating oscillator, the test of EN 55014 (series)
shall be carried out on the samples prior to the tests of EN 61543.
Annex A Number of samples to be submitted and test sequences to be applied
for verification of conformity for type B RCCBs
Modify the note before A.1 into a requirement.

Table A.1 Replace the second column heading by the following:
Tests according to EN 61008-1 and EN 61008-2-1
Delete in sequence D the row referred to 9.17.
a
Modify footnote reference into *.
Add the following new test sequences D and H:

D 9.11.2.3 c) Verification of the suitability in IT system
H 9.24 Verification of correct operation at low ambient air
temperature of RCCBs for use in the range of -25 °C
to +40 °C
a
Replace footnote by the following new footnote *:

* An additional test according to 9.21.1.1 shall be made with a supply voltage of 1,1 U . Only the lower
n
limits of the tripping currents are verified.
Delete the last sentence after Table A.1.

- 5 - EN 62423:2009
Add the following new Tables A.Z1, A.Z2 and A.Z3.

Table A.Z1
Test Tests according to EN 61543 Test (or Inspection)
sequence
Harmonics, interharmonics
EN 61543 Table 4 – T1.1
EN 61543 Table 4 – T1.2 Signalling voltage
a
Z1
EN 61543 Table 5 – T2.3 Conducted unidirectional transients of the ms

and µs time scale
EN 61543 Table 5 – T2.1 and T2.5 Conducted oscillatory voltages or currents
Z2
EN 61543 Table 5 – T2.2 Conducted unidirectional transients of the ns
time scale (burst)
EN 61543 Table 5 – T2.6 Conducted common mode disturbances in the
frequency range lower than 150 kHz
Z3
EN 61543 Table 6 – T3.1 Electrostatic discharges
a
For devices containing a continuously operating oscillator, the test of EN 55014 series shall be carried out
on the samples prior to the tests of this sequence.

Table A.Z2 – Number of samples for full test procedure

Test sequence Number of samples Minimum number of Maximum number of
samples which shall samples for repeated
a b c
pass the tests tests
A 1 1 –
B 3 2 3
d
C 3 2 3
d
D 3 2 3
D2 3 2 3
d
E 3 2 3
d
F 3 2 3
d
F 3 2 3
G 3 2 3
H 3 2 3
e
Z1 3 2 3
e
Z2 3 2 3
e
Z3 3 2 3
a
In total a maximum of three test sequences may be repeated.
b
It is assumed that a sample which has not passed a test has not met the requirements due to
workmanship or assembly defects which are not representative of the design.
c
In the case of repeated tests, all test results must be acceptable.
d
Except for tests of 9.12.10, 9.12.11.2, 9.12.11.3, 9.12.11.4, and 9.12.13, as appropriate, which all
samples shall pass.
e
On request of the manufacturer the same set of samples may be subjected to more than one of these test
sequences.
Table A.Z3 – Number of samples for simplified test procedure
a
Test Number of samples according to number of poles
sequence
b c
2 poles 3 poles 4 poles
max. rating I max. rating I max. rating I
n n n
A 1 1 1
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
B 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
C 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
D0 + D1 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
for all other ratings
D 1
of I
∆n
max. rating I max. rating I max. rating I
n n n
D 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
E 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
F
min. rating I min. rating I min. rating I
d n d n d n
3 3 3
max. rating I max. rating I max. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
G
min. rating I min. rating I min. rating I
d n d n d n
3 3 3
max. rating I max. rating I max. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
H
min. rating I min. rating I min. rating I
d n d n d n
3 3 3
max. rating I max. rating I max. rating I
∆n ∆n ∆n
any rating I any rating I any rating I
e n n n
Z1 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
any rating I any rating I any rating I
e n n n
Z2 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
e any rating I any rating I any rating I
n n n
Z3 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
a
If a test is to be repeated according to the minimum performance criteria of A.2, a new set of samples is
used for the relevant test. In the repeated test all test results must be acceptable.
b
If only 3-pole or 4-pole RCCBs are submitted, this column shall also apply to a set of samples with the
smallest number of poles.
c
This column is omitted when 4-pole RCCBs have been tested.
d
If only one value of I is submitted, these sets of samples are not required.
∆n
e
If a range of RCCBs of the same fundamental design are submitted, only the samples with the maximum
number of poles need to be tested.

- 7 - EN 62423:2009
Annex B Number of samples to be submitted and test sequences to be applied
for verification of conformity for type B RCCOs
Modify the note before B.1 into a requirement.
Table B.1 Replace the second column heading by the following:
Tests according to EN 61009-1 and EN 61009-2-1
Replace the test sequences C and C by the following:
1 2
9.10 Mechanical and electrical endurance
-- 9.3 Verification of the RCD after test sequence
C
9.12.11.2.Z1 Performance at reduced short-circuit currents

(and 9.12.12) (Verification of the RCBO after short-circuit tests)
9.12.11.2.Z2 Short-circuit test for verifying the suitability of RCBOs
C  for use in IT systems
(and 9.12.12) (Verification of the RCBO after short-circuit tests)

Delete in sequence D the rows referred to 9.17 and 9.12.13.

a
Modify footnote reference into *.

a
Replace footnote by the following new footnote *:

* An additional test according to 9.21.1.1 shall be made with a supply voltage of 1,1 Un. Only the lower
limits of the tripping currents are verified.
Delete the last sentence after Table B.1.

Add the following new Tables B.Z1, B.Z2 and B.Z3.

Table B.Z1
Test Tests according to EN 61543 Test (or Inspection)
sequence
Harmonics, interharmonics
EN 61543 Table 4 – T1.1
a EN 61543 Table 4 – T1.2 Signalling voltage
Z1
EN 61543 Table 5 – T2.3 Conducted unidirectional transients of the ms

and µs time scale
EN 61543 Table 5 – T2.1 and T2.5 Conducted oscillatory voltages or currents
Z2
EN 61543 Table 5 – T2.2 Conducted unidirectional transients of the ns
time scale (burst)
EN 61543 Table 5 – T2.6 Conducted common mode disturbances in the
frequency range lower than 150 kHz
Z3
EN 61543 Table 6 – T3.1 Electrostatic discharges
a
For devices containing a continuously operating oscillator, the test of EN 55014 series shall be carried out
on the samples prior to the tests of this sequence.

Table B.Z2 – Number of samples for full test procedure
Test sequence Number of samples Minimum number of Maximum number of
samples which shall samples for repeated
a b c
pass the tests tests
A 1 1 –
B 3 2 3
d
C 3 2 3
d
C 3 2 3
d
D + D 3 2 3
0 1
d
E + E 3 2 3
0 1
d
F 3 2 3
d
F 3 2 3
d
F 3 2 3
G 3 2 3
d
H 3 2 3
e
Z1 3 2 3
e
Z2 3 2 3
e
Z3 3 2 3
a
In total a maximum of three test sequences may be repeated.
b
It is assumed that a sample which has not passed a test has not met the requirements due to
workmanship or assembly defects which are not representative of the design.
c
In the case of repeated tests, all test results must be acceptable.
d
Except for tests of 9.12.10, 9.12.11.2, 9.12.11.3, 9.12.11.4, and 9.12.13, as appropriate, which all
samples shall pass.
e
On request of the manufacturer the same set of samples may be subjected to more than one of these test
sequences.
- 9 - EN 62423:2009
Table B.Z3 – Number of samples for simplified test procedure
a
Test Number of samples according to number of poles
sequence
b c d
2 poles 3 poles 4 poles
max. rating I max. rating I max. rating I
n n n
A 1 1 1
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
B 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
C 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
C For 2 protected poles: 1 max. rating I 1 max. rating I
2 n n
min. rating I min. rating I
∆n ∆n
max. rating I
n
min. rating I
∆n
For 1 protected pole:
max. rating I
n
min. rating I
∆n
max. rating I max. rating I max. rating I
n n n
D + D 3 3 3
0 1
min. rating I min. rating I min. rating I
∆n ∆n ∆n
for all other ratings
D 1
of I with max. I
∆n n
max. rating I max. rating I max. rating I
n n n
E + E 3 3 3
0 1
min. rating I min. rating I min. rating I
∆n ∆n ∆n
for all other ratings
E 1
of I with min. I
n ∆n
max. rating I max. rating I max. rating I
n n n
3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
F
min. rating I min. rating I min. rating I
e n e n e n
3 3 3
max. rating I max. rating I max. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
F
min. rating I min. rating I min. rating I
e n e n e n
3 3 3
max. rating I max. rating I max. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
f n f n f n
F 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
G 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
max. rating I max. rating I max. rating I
n n n
3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
H
e min. rating I e min. rating I e min. rating I
n n n
3 3 3
max. rating I max. rating I max. rating I
∆n ∆n ∆n
any rating I any rating I any rating I
f n n n
Z1 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
any rating I any rating I any rating I
f n n n
Z2 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
any rating I any rating I any rating I
f n n n
Z3 3 3 3
min. rating I min. rating I min. rating I
∆n ∆n ∆n
a
If a test is to be repeated according to the minimum performance criteria of A.2, a new set of samples is
used for the relevant test.
b
In the repeated test all test results must be acceptable.
c
Apply also to 2 pole RCBOs with 1 protected pole.
d
Also applicable to 4-pole RCBOs with 3 protected poles.
e
This column is omitted when 4-pole RCBOs have been tested. If only one value of l is submitted, these
∆n
samples are not required.
f
Only on the maximum number of poles.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
CISPR 14 series Electromagnetic compatibility - Requirements for EN 55014 series
household appliances, electric tools and similar
apparatus
1)
IEC/TS 60479-1 - Effects of current on human beings and livestock - - -
Part 1: General aspects
IEC 60479-2 - Effects of current passing through the human body - - -
Part 2: Special aspects
IEC 61008-1 (mod) 1996 Residual current operated circuit-breakers without
+ A1 2002 integral overcurrent protection for household and EN 61008-1 2004
A2 2006 similar uses (RCCB's) - - -

Part 1: General rules A11 2007
A12 2009
IEC 61008-2-1 1990 Residual current operated circuit-breakers without EN 61008-2-1 1994
integral overcurrent protection for household and A11 1998
similar uses (RCCB's) - + corr. March 1999
Part 2-1: Applicability of the general rules to RCCB's
functionally independent of line voltage
IEC 61009-1 (mod) 1996 Residual current operated circuit-breakers with
+ A1 2002 integral overcurrent protection for household and
+ corr. May 2003 similar uses (RCBO's) - EN 61009-1 2004
A2 2006 Part 1: General rules - -
+ corr. July 2006
A11 2008
A12 2009
A13 2009
IEC 61009-2-1 1991 Residual current operated circuit-breakers with EN 61009-2-1 1994
integral overcurrent protection for household and + A11 1998
similar uses (RCBO's) - + corr. March 1999
Part 2-1: Applicability of the general rules to RCBO's
functionally independent of line voltage
IEC 61543 1995 Residual current-operated protective devices (RCDs) EN 61543 1995
for household and similar use - Electromagnetic + corr. Dec. 1997
compatibility + A11 2003
+ corr. May 2004
+ A12 2005
———————
1)
Undated reference.
- 11 - EN 62423:2009
Annex ZB
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a
long period, e.g. climatic conditions, electrical earthing conditions.
NOTE  If it affects harmonization, it forms part of the European Standard.
For the countries in which the relevant special national conditions apply these provisions are
normative, for other countries they are informative.
Clause Special national condition
Denmark
9.1 In accordance to the requirement of this standard multi-pole RCDs shall be able to operate
down to a supply voltage of 85 V a.c. (phase – neutral).
In accordance to the requirement of this Standard multi-pole RCDs shall be able to operate
when used for single phase circuits.

Germany
9.1
Multi-pole RCDs shall be able to operate down to a supply voltage of 50 V AC. This applies
also to RCDs which are used for single phase circuits. Therefore the tests shall be carried out
at 50 V instead of 0,85 U .
n
Ireland, the Netherlands and the United Kingdom
Modify note 2 to read:
NOTE 2  Additional requirements for 1 pole devices for use in TN-S or TN-C-S systems and 2 pole devices (L-L) for
use between phases are under consideration.
3.2
Replace 3.2 by:
3.2
type B residual current devices
residual current devices for which tripping is ensured as for type A according to IEC 61008-1
or IEC 61009-1, as applicable, and in addition for the following residual currents:
3.2.1
type B residual current device with 3 or 4 poles
residual current device for which tripping is ensured as for type A according to IEC 61008-1 or
IEC 61009-1, as applicable, and in addition
– for residual sinusoidal alternating currents up to 1 000 Hz,
– for residual pulsating direct currents,
– for residual alternating currents superimposed on a smooth direct current,
– for residual pulsating direct currents superimposed on a smooth direct current,
– for residual pulsating rectified d.c. which results from two or more phases,
– for residual smooth direct currents,
independent of polarity and independent of whether the residual current appears suddenly or
is slowly increased
Clause Special national condition

Ireland, the Netherlands and the United Kingdom (continued)

3.2.2
type BC residual current device with 2 poles
residual current devices for which tripping is ensured as for RCD type A according to
IEC 61008-1 or IEC 61009-1, as applicable, and in addition
– for residual sinusoidal alternating currents up to 1 000 Hz,
– for residual pulsating direct currents,
– for residual alternating currents superimposed on a smooth direct current,
– for residual pulsating rectified d.c which results from 2 phases,
– for residual d.c currents that may result from inverter circuits.
NOTE  The above 5th dash refers to fault conditions in micro generators, such as fuel cells or PV systems, being
connected through an inverter to the electrical installation connected in turn to another supply source (in general the
public supply system)
5.1
Add to the last dash: "for 3 and 4 pole residual current devices only".
Add the following new dash
– for residual direct currents originating from invertors connected to the supply system.

Add the following new subclause
5.4 Standard values of break time and non-actuating time for general type 2 pole BC type
RCDs in case of residual pulsating direct currents which may result from an inverter
circuit connected to the supply system.
Table 3 – Standard values of non-operating current and break times for general
type 2-pole BC type RCDs in case of residual pulsating direct currents which may result
from an inverter circuit connected to the supply system
Standard values of break time (s) at a residual current composed by a
smooth dc current and a half wave rectified sinusoidal current having
opposite polarity
I I I I
∆ 1 ∆ 2 ∆ 3 ∆ 4
Smooth residual current + 1,5 I + 3 I + 6 I + 15 I
∆n ∆n ∆n ∆n
Half wave sinusoidal - 1,125 I - 2,25 I - 4,5 I - 11,25 I
∆n ∆n ∆n ∆n
residual current
a
(peak value)
Break time Non- tripping 0,3 0,15 0,04
a
The peak value should be measured using an oscilloscope.

- 13 - EN 62423:2009
Clause Special national condition

Ireland, the Netherlands and the United Kingdom (continued)
8.1.4
Add after the first paragraph:
This test is not applicable for 2 pole devices
8.1.5
Add after the first paragraph:
This test is not applicable for 2 pole devices
8.1.6
Add after the first paragraph:
This test is not applicable for 2 pole devices

Add the following new subclause
8.1.7 Residual pulsating direct currents originating from a single phase inverter

circuit connected to the supply system.
2 pole type BC RCDs shall operate in response to a steady increase of residual pulsating
direct currents resulting from an inverter connected to the supply system within the limits of
the composed residual current according to Table 3 between the values I and I .
∆ 1 ∆ 2
2 pole type BC RCDs shall operate in response to a sudden appearance of residual pulsating
direct currents resulting from an inverter connected to the supply system within the time limits
specified in Table 3 for the currents I , I and ≥ I .
∆ 2 ∆ 3 ∆ 4
9.1.6
Replace the subclause title by the following:
9.1.6 Verification of the correct operation of 3 and 4 pole type B RCDs in case of

residual smooth direct current
Add the following new subclause
9.1.7 Verification of the correct operation of 2 pole type BC RCDs in case of residual
direct currents when protecting a single phase inverter circuit connected to the
supply.
The RCD is connected as shown in Figure ZB.1 and supplied with rated voltage.

9.1.7.1  Slowly rising residual pulsating current
The test circuit being connected to line and neutral terminal or if applicable to the line
terminals, the RCD and test switch S being closed.
The test currents I and I are set to 0,2 x the values as given for the tripping current I .
1 2 ∆ 2
Current I is increased to the value 0,3 x the value of the smooth residual current applicable
for I followed by increasing the half wave pulsating residual current to 0,3 times the value as
∆ 2
given for I
∆ 2
Subsequently the currents are further increased in steps to 0,4 times, 0,5 times, 0,6 times etc
of the residual operating current I .
∆ 2
The RCD shall not trip before the current reaches the value I and shall trip before this current
∆1
exceeds the value I
∆ 2
Clause Special national condition

Ireland, the Netherlands and the United Kingdom (continued)

9.1.7.2  Suddenly appearing residual pulsating current
The supply and load terminals of the RCD are inter-connected using suitable means and the
currents I and I are set in turn to the values as applicable for I , I and I , respectively,
1 2 ∆2  ∆3 ∆ 4
as given in Table 3.
Test switch S is opened, the RCD is closed, and the calibration connections removed.
Test switch S is then closed. The residual currents start to flow when S is closed.
1 1
The break time is measured for each value and shall not exceed the specified break times
given in Table 3. This test is repeated 3 times for each of the residual current values.
9.3 Modify this subclause as follows:
9.3 Verification of RCD after test sequences

2 pole BC type RCD shall trip within 0,3 s with the composite residual test current I as
∆2
specified in Table 2.
3 and 4 pole type B RCD shall trip with a test current of 2,5 I with smooth direct current.
∆n
One test only is made without measurement of break time.

- 15 - EN 62423:2009
Clause Special national condition
Ireland, the Netherlands and the United Kingdom (continued)

Components
A  ammeters
S and S1  all-pole switch
RCD  2-pole RCD under test
Figure ZB.1 – Test circuit for the verification of correct operation of 2 pole type BC RCD
for protection of single phase inverter circuit connected to a supply L-N

Clause Special national condition

Ireland, the Netherlands and the United Kingdom (continued)
Annex A
Replace Sequence D in Table A.1 by the following:
Test Tests Additional tests
sequence according to according to this
IEC 61008-1 standard
Test (or inspection)
D D 9.1.6.1 Verification of correct operation of 3 and 4
pole type B RCCB in case of residual
smooth direct current without load for
ratings of I not tested in D
∆n 1
9.1.7 Verification of correct operation of 2 pole
type BC RCCB in case of residual currents
when protecting a single phase inverter
circuit connected to the supply

Annex B
Replace Sequence D in Table B.1 by the following:
Test Tests Additional tests
sequence according to according to this
IEC 61009-1 standard
Test (or inspection)
D D0 9.1.6.1 Verification of correct operation of 3 and 4
pole type B RCBO in case of residual
smooth direct current without load for
not tested in D
ratings of I∆n 1
9.1.7 Verification of correct operation of 2 pole
type BC RCBO in case of residual currents
when protecting a single phase inverter
circuit connected to the supply

rd
Annex C Add at the beginning of the 3 paragraph: “In case of 3 or 4 pole RCD”.
rd
Add after the 3 paragraph the following new paragraph
In case of a 2 pole RCD, a pulsating residual current being composed of a smooth d.c.
current having the value I and a half wave pulsating residual current with power frequency
and having the peak value of – 0,75 I is passed through one pole. The type BC RCCB or
type BC RCBO, as applicable, shall not trip at a current less or equal to the value specified
for I and shall trip at the current I within the time specified in Table 3.
∆n1 ∆n2
__________
- 17 - EN 62423:2009
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant essential requirements as given in Annex I of the EC Directive 2004/108/EC.
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling
within the scope of this standard.
__________
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
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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
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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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62423 has been prepared by subcommittee 23E: Circuit-breakers
and similar equipment for household use, of IEC technical committee 23: Electrical
accessories.
This International Standard is to be read in conjunction with the following standards:
IEC 61008-1:1996, Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses (RCCB
...