IEC 61008-2-1:2024

IEC 61008-2-1 ®
Edition 2.0 2024-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses (RCCBs) –
Part 2-1: RCCBs according to classification 4.1.1
Interrupteurs automatiques à courant différentiel résiduel sans dispositif de
protection contre les surintensités incorporé pour usages domestiques et
analogiques (ID) –
Partie 2-1: ID conformes à la classification en 4.1.1
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IEC 61008-2-1 ®
Edition 2.0 2024-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses (RCCBs) –
Part 2-1: RCCBs according to classification 4.1.1
Interrupteurs automatiques à courant différentiel résiduel sans dispositif de
protection contre les surintensités incorporé pour usages domestiques et
analogiques (ID) –
Partie 2-1: ID conformes à la classification en 4.1.1
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8327-0008-2
– 2 – IEC 61008-2-1:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Classification . 7
4.1 According to the supply conditions . 7
4.1.1 RCCB operating correctly on the occurrence of residual current . 7
5 Characteristics of RCCBs . 7
6 Marking and other product information . 7
7 Standard conditions for operation in service and for installation . 7
8 Requirements for construction and operation . 7
9 Tests . 7
9.1 General . 7
9.8 Test of temperature-rise . 7
9.8.2 Test procedure . 7
9.9 Verification of the operating characteristics . 8
9.9.1 Verification of the operating characteristics under residual current
conditions . 8
9.15 Verification of the trip-free mechanism . 11
9.15.1 General test conditions . 11
9.15.2 Test procedure . 11
9.18 Verification of the behaviour of RCCBs in the event of overcurrent in the
main circuit . 11
9.19 Verification of the behaviour of RCCBs in event of current surges caused by
impulse voltages . 11
9.19.1 Current surge test for all RCCBs (0,5 µs / 100 kHz ring wave test) . 11
9.19.2 Verification of the behaviour at surge currents up to 3 000 A (8/20 µs
surge current test) . 12
9.20 Verification of reliability . 12
9.20.2 Test with temperature of 40 °C . 12
9.21 Verification of withstand against ageing . 12
9.22 Electromagnetic compatibility (EMC) . 12
Annex A (normative) Test sequence and number of samples to be submitted for
certification purposes . 16
A.1 Test sequences . 16
A.2 Number of samples to be submitted for full test procedure . 17
A.3 Number of samples to be submitted for simplified test procedures in the
case if submitting simultaneously a range of RCCBs of the same
fundamental design . 18
Annex D (normative) Routine tests . 22
D.3 Dielectric strength test . 22
Bibliography . 23

Figure 2 – Test circuit for the verification of operating characteristics and trip-free
mechanism for RCCBs classified according to 4.1.1 . 13
Figure 3 – Test circuit for the verification of the correct operation in the case of
residual pulsating direct currents for RCCBs classified according to 4.1.1 . 14

Figure 4 – Test circuit for the verification of the correct operation in the case of
residual pulsating direct currents in the presence of a standing smooth direct current of
0,006 A for RCCBs classified according to 4.1.1 . 15

Table A.1 – Test sequences . 16
Table A.2 – Number of samples for full test procedure . 18
Table A.3 – Number of samples for simplified test procedure . 19
Table A.4 – Test sequences for RCCBs of different classification according to 4.3 of
IEC 61008-1:2024 . 21

– 4 – IEC 61008-2-1:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS
WITHOUT INTEGRAL OVERCURRENT PROTECTION
FOR HOUSEHOLD AND SIMILAR USES (RCCBs) –

Part 2-1: RCCBs according to classification 4.1.1

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
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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 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 61008-2-1 has been prepared by subcommittee 23E: Circuit-breakers and similar
equipment for household use, of IEC technical committee 23: Electrical accessories. It is an
International Standard.
This second edition cancels and replaces the first edition published in 1990. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– harmonization of all clauses between the IEC 61008, IEC 61009 and IEC 60755 series using
blocks and modules approach;
– harmonization of all tables and figures between the IEC 61008, IEC 61009 and IEC 60755
series;
– terms and definitions are now referred to IEC 62873-2;
– modification of 4.1 for classification according to supply conditions;
– specific tests for operating characteristics (9.9) of RCCB according to classification 4.1.1;
– specific test conditions for temperature-rise (9.8), verification of trip-free (9.15), surge
current tests (9.19), reliability (9.20) and ageing (9.21).
The text of this International Standard is based on the following documents:
Draft Report on voting
23E/1369/FDIS 23E/1386/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 International Standard is to be used in conjunction with IEC 61008-1:2024.
Where this document states "addition", "deletion" or "replacement", the corresponding
requirement, test specification or explanatory material in IEC 61008-1:2024 is adapted
accordingly.
Where this document defines a new subclause, this subclause number starts at 100 (for
example an additional definition in this document would read 3.100).
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 61008 series, published under the general title Residual current
operated circuit-breakers without integral overcurrent protection for household and similar uses
(RCCBs), 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.
– 6 – IEC 61008-2-1:2024 © IEC 2024
RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS
WITHOUT INTEGRAL OVERCURRENT PROTECTION
FOR HOUSEHOLD AND SIMILAR USES (RCCBs) –

Part 2-1: RCCBs according to classification 4.1.1

1 Scope
IEC 61008-1:2024, Clause 1 is applicable except for the first paragraph, which is replaced by
the first paragraph below, and the last paragraph, which is replaced by the second paragraph
below:
This part of IEC 61008 applies to residual current operated circuit-breakers, without integral
overcurrent protection, for household and similar uses (hereafter referred to as RCCBs),
classified according to IEC 61008-1:2024, 4.1.1. RCCBs according to this document are
intended for voltages not exceeding 440 V AC with frequencies of 50 Hz, 60 Hz or 50/60 Hz
and currents not exceeding 125 A, intended principally for protection against shock hazard.
This document applies in conjunction with IEC 61008-1:2024. It specifies requirements, tests
and test sequences to verify compliance and is used for certification purposes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
IEC 61008-1:2024, Residual current operated circuit-breakers without integral overcurrent
protection for household and similar uses (RCCBs) – Part 1: General rules
IEC 61543:2022, Residual current-operated protective devices (RCDs) for household and
similar use – Electromagnetic compatibility
IEC 62873-2, Residual current operated circuit-breakers for household and similar use – Part 2:
Residual current devices (RCDs) – Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62873-2 and in
IEC 61008-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/

4 Classification
IEC 61008-1:2024, Clause 4 applies with the following modifications (deletion of 4.1.2, 4.1.3,
4.1.4, 4.1.5 and 4.1.6):
4.1 According to the supply conditions
4.1.1 RCCB operating correctly on the occurrence of residual current
• within the voltage range 1,1 U and zero volt; and
e
• with any number of supply conductors connected.
The RCCB does not open automatically in the event of loss of supply.
5 Characteristics of RCCBs
IEC 61008-1:2024, Clause 5 applies.
6 Marking and other product information
IEC 61008-1:2024, Clause 6 applies.
7 Standard conditions for operation in service and for installation
IEC 61008-1:2024, Clause 7 applies.
8 Requirements for construction and operation
IEC 61008-1:2024, Clause 8 applies.
9 Tests
IEC 61008-1:2024, Clause 9 applies with the following modifications.
9.1 General
IEC 61008-1:2024, 9.1 applies with the following modification:
Replace the third paragraph by:
The test sequences and the number of samples to be submitted are stated in Annex A.
9.8 Test of temperature-rise
9.8.2 Test procedure
IEC 61008-1:2024, 9.8.2 applies with the following addition:
The test is performed at any convenient voltage.

– 8 – IEC 61008-2-1:2024 © IEC 2024
9.9 Verification of the operating characteristics
9.9.1 Verification of the operating characteristics under residual current conditions
9.9.1.1 Test circuit and test procedure
The RCCB is installed as for normal use.
The test circuit shall be of negligible inductance. For tests according to 9.9.1.2, the test circuit
shall correspond to Figure 2. For tests according to 9.9.1.3, the test circuit shall correspond to
Figure 3 or Figure 4, as applicable.
The instruments for the measurement of the residual current shall display (or allow to determine)
the true RMS value.
Unless otherwise specified in this document, the tests are performed with no load at the ambient
air temperature of 20 °C ± 5 °C.
The RCCB shall perform the tests of 9.9.1.2 and 9.9.1.3, as applicable.
Each test is performed by applying the residual current to one pole only, taken at random, with
five measurements, unless otherwise specified in this document. The other poles shall not be
connected to the supply, unless otherwise specified in this document.
For RCCBs having more than one rated frequency, the tests shall be carried out at the lowest
and highest frequency, except for the test in 9.9.1.2.5 where verification is performed at one
frequency only.
For RCCBs having multiple settings of residual operating current, the tests shall be carried out
for each setting.
9.9.1.2 Tests for all RCCBs
9.9.1.2.1 Verification of correct operation in the case of a steady increase of the
residual current
The switch S and the RCCB being in the closed position, the residual current is steadily
increased, starting from a value not higher than 0,2 I , trying to attain the value of I within
Δn Δn
30 s. The test shall be performed five times, the tripping current being measured each time.
All five measured values shall be situated between I and I .
Δno Δn
9.9.1.2.2 Verification of correct operation on closing on a residual current
The test circuit being calibrated at the value of the rated residual operating current I and the
Δn
switch S being closed, the RCCB is closed to simulate service conditions as closely as
possible.
The break time is measured five times. No measurement shall exceed the limiting value
specified for I in IEC 61008-1:2024, Table 11, according to the type of RCCB.
Δn
9.9.1.2.3 Verification of correct operation in the case of sudden appearance of
residual current
1) All types
The test circuit being successively calibrated at each of the values of residual current
specified in IEC 61008-1:2024, Table 11, the RCCB being in the closed position, the test
current is suddenly established by closing the switch S .
The RCCB shall trip during each test.
Five measurements of the break time are carried out at each value of residual current.
No value shall exceed the relevant specified limiting value given in IEC 61008-1:2024,
Table 11.
2) Additional test for type S
The test circuit being successively calibrated at each of the values of residual current
specified in IEC 61008-1:2024, Table 11, the RCCB being in the closed position, the
residual current is suddenly established by closing the switch S for periods corresponding
to the relevant minimum non-actuating times, with a tolerance of %.
−5
Each application of residual current shall be separated from the previous one by an interval
of at least 1 min.
The RCCB shall not trip during any of the tests.
9.9.1.2.4 Verification of correct operation in the case of sudden appearance of
residual currents between 5 I and 500 A
Δn
The test circuit is calibrated successively to the following values of the residual current:
5 A, 10 A, 20 A, 50 A, 100 A and 200 A.
The RCCB being in the closed position, the residual current is suddenly established by closing
the switch S .
The RCCB shall trip during each test. The break time shall not exceed the times given in
IEC 61008-1:2024, Table 11.
The test is carried out once for each value of residual current on one pole only, taken at random.
9.9.1.2.5 Verification of correct operation with load
The tests of 9.9.1.2.2 and 9.9.1.2.3 are repeated, the pole under test and one other pole of the
RCCB being loaded with rated current, at any convenient voltage.
This test is not intended to reach thermal steady-state conditions.
NOTE The loading with rated current is not shown in Figure 2.
9.9.1.2.6 Tests at the temperature limits
The RCCB shall perform the tests specified in 9.9.1.2.3 under the following conditions,
successively:
1) ambient air temperature: −5 °C, off-load, the residual current being connected to one current
path only;
2) ambient air temperature: +40 °C, the RCCB having been previously loaded with the rated
current, at any convenient voltage, until it attains thermal steady-state conditions.

– 10 – IEC 61008-2-1:2024 © IEC 2024
Preheating may be carried out at any convenient voltage at either 50 Hz or 60 Hz but auxiliary
circuits shall be supplied at rated voltage, or loaded with rated current, as applicable.
In practice, these conditions are reached when the variation of temperature-rise does not
exceed 1 K per hour.
For the tripping tests in 2), the flow of rated current may be interrupted, provided that the total
interruption period does not exceed 30 s. As soon as the sum of interruption periods exceeds
30 s, the RCCB shall be loaded again with rated current for 5 min before next tripping time
measurement.
9.9.1.3 Additional verification of correct operation for RCCBs of type A
9.9.1.3.1 Verification of correct operation in the case of a continuous rise of
residual pulsating direct current
The test shall be performed according to Figure 3.
The switches S and the RCCB shall be closed. The relevant thyristor shall be controlled in
such a manner that current delay angles α of 0°, 90° and 135° are obtained. Each pole of the
RCCB shall be tested twice at each of the current delay angles, in position I as well as in
position II of the switch S .
For each test, the current shall be steadily increased at an approximate rate of 1,4 I /
Δn
30 amperes per second for RCCBs with I > 0,01 A, and at an approximate rate of 2 I /
Δn Δn
30 amperes per second for RCCBs with I ≤ 0,01 A, starting from zero. The tripping current
Δn
shall be in accordance with IEC 61008-1:2024, Table 14.
9.9.1.3.2 Verification of correct operation in the case of suddenly appearing residual
pulsating direct currents
The RCCB shall be tested according to Figure 3.
The circuit being successively calibrated at the values specified hereafter and the RCCB being
in the closed position, the residual current is suddenly established by closing the switch S .
The test is carried out at each value of residual current specified in IEC 61008-1:2024, Table 12,
according to the type of RCCB.
Two measurements of the break time are made at each value of residual current, at a current
delay angle α = 0° with the switch S in position I for the first measurement and in position II
for the second measurement.
No value shall exceed the specified limiting values.
9.9.1.3.3 Verification of correct operation with load
The tests of 9.9.1.3.1 are repeated, the pole under test and one other pole of the RCCB being
loaded with the rated current, at any convenient voltage.
For this test, it is not intended to reach thermal steady-state conditions.
NOTE The loading with rated current is not shown in Figure 3.

9.9.1.3.4 Verification of correct operation in the case of residual pulsating direct
currents superimposed by a smooth direct current of 0,006 A
The RCCB shall be tested according to Figure 4 with a half-wave rectified residual current
(current delay angle α = 0°) superimposed by a smooth direct current of 0,006 A of same
polarity.
Each pole of the RCCB is tested in turn, twice at each of positions I and II.
For each test, the current shall be steadily increased at an approximate rate of 1,4 I /
Δn
30 amperes per second for RCCBs with I > 0,01 A, and at an approximate rate of 2 I /
Δn Δn
30 amperes per second for RCCBs with I ≤ 0,01 A, starting from zero. The tripping current
Δn
shall be in accordance with the upper limit of IEC 61008-1:2024, Table 14.
9.15 Verification of the trip-free mechanism
9.15.1 General test conditions
The RCCB is mounted and wired as in normal use and supplied under the conditions of 9.9.1.1.
The RCCB is tested in a substantially non-inductive circuit, the diagram of which is shown in
Figure 2.
For RCCBs having multiple settings, the test is carried out for each setting.
If the RCCB is fitted with more than one operating means, the trip-free operation is verified for
all operating means.
9.15.2 Test procedure
A residual current equal to 1,5 I is passed by closing the switch S , the RCCB having been
Δn 1
closed and the operating means being held in the closed position. The RCCB shall trip.
This test is then repeated by moving the operating means of the RCCB slowly over a period of
approximately 1 s to a position where the current starts to flow. Tripping shall occur without
further movement of the operating means.
Both tests are carried out three times, at least once on each pole intended to be connected to
a phase.
9.18 Verification of the behaviour of RCCBs in the event of overcurrent in the main
circuit
IEC 61008-1:2024, 9.18 applies with the following addition before the first paragraph:
The test is performed at any convenient voltage.
9.19 Verification of the behaviour of RCCBs in event of current surges caused by
impulse voltages
9.19.1 Current surge test for all RCCBs (0,5 µs / 100 kHz ring wave test)
IEC 61008-1:2024, 9.19.1 applies with the following addition:
The test is performed without the RCCB being connected to the supply voltage.

– 12 – IEC 61008-2-1:2024 © IEC 2024
9.19.2 Verification of the behaviour at surge currents up to 3 000 A (8/20 µs surge
current test)
9.19.2.1 Test conditions
IEC 61008-1:2024, 9.19.2.1 applies with the following addition:
The test is performed without the RCCB being connected to the supply voltage.
9.20 Verification of reliability
9.20.1.3 Test procedure
IEC 61008-1:2024, 9.20.1.3 applies with the following addition after b) 1):
The RCCBs shall be in the closed position and not supplied.
9.20.2 Test with temperature of 40 °C
IEC 61008-1:2024, 9.20.2 applies with the following addition:
The test is performed at any convenient voltage.
9.21 Verification of withstand against ageing
IEC 61008-1:2024, 9.21 applies with the following addition:
The test is performed at any convenient voltage.
9.22 Electromagnetic compatibility (EMC)
RCCBs shall be tested according to the test sequences H, I and J listed in Annex A.
The test T1 of IEC 61543 does not apply.

Key
S Voltage source
A Ammeter
S Single-pole switch
D RCCB under test
R Variable resistor
Figure 2 – Test circuit for the verification of operating characteristics and trip-free
mechanism for RCCBs classified according to 4.1.1

– 14 – IEC 61008-2-1:2024 © IEC 2024

Key
S Voltage source
A Ammeter (measuring RMS values)
D RCCB under test
D Thyristors
i
R Variable resistor
S Single-pole switch
S Two-way switch
Figure 3 – Test circuit for the verification of the correct operation in the case of residual
pulsating direct currents for RCCBs classified according to 4.1.1

Key
S Voltage source
A Ammeter (measuring RMS values)
D RCCB under test
D Thyristors
i
R , R Variable resistors
1 2
S Single-pole switch
S Two-way switch
Figure 4 – Test circuit for the verification of the correct operation in the case
of residual pulsating direct currents in the presence of a standing smooth direct
current of 0,006 A for RCCBs classified according to 4.1.1

– 16 – IEC 61008-2-1:2024 © IEC 2024
Annex A
(normative)
Test sequence and number of samples to be submitted
for certification purposes
A.1 Test sequences
To verify compliance with the requirements of this document, the tests are carried out according
to Table A.1 where the tests in each sequence are carried out in the order indicated.
Table A.1 – Test sequences
a
Test sequence Test (or inspection)
Clause or subclause
A 6 Marking and other product information
8.1.1 General
8.1.2 Mechanism
9.3 Indelibility of marking
8.1.3 Clearances, creepage distances and solid insulation (external
parts only)
9.15 Verification of the trip-free mechanism
9.4 Test of reliability of screws, current-carrying parts and
connections
9.5 Reliability of terminals for external conductors
9.6 Protection against electric shock
9.13 Resistance to heat
8.1.3 Clearances and creepage distances (internal parts)
9.23 Resistance to rusting
A 9.24 Verification of the behaviour of the RCCB under temporary
overvoltage (TOV) conditions
9.14 Resistance to abnormal heat and to fire
B 9.7.7.3 Verification of resistance of the insulation of open contacts
against an impulse voltage (suitability for isolation)
9.7.1 Resistance to humidity
9.7.2 Insulation resistance of the main circuit
9.7.3 Dielectric strength of the main circuit
9.7.4 Insulation resistance and dielectric strength of auxiliary circuits
9.7.7.2 Verification of clearances with the impulse withstand voltage
9.7.5 Secondary circuit of detection transformers
9.7.6 Capability of control circuits connected to the main circuits, etc.
9.8 Temperature-rise
9.20.2 Reliability at 40 °C
9.21 Ageing of electronic components
C 9.10 Mechanical and electrical endurance
___________
1 The term "certification" denotes either a declaration of conformity by the manufacturer, or a third party
certification, e.g. by an independent testing station.

a
Test sequence Test (or inspection)
Clause or subclause
D D 9.9.1 Residual operating characteristics
D 9.19 Verification of the behaviour of RCCBs in the event of current
surges caused by impulse voltages
9.11.2.3 a) b) Performance at I
Δm
9.16 Test device
9.12 Resistance to mechanical shock and impact
9.18 Verification of the behaviour of RCCBs in the event of
overcurrent in the main circuit
D 9.11.2.3 c) Verification of the suitability of RCCBs for use in IT systems
E 9.11.2.4 a) Coordination at I
nc
9.11.2.2 Performance at I
m
F 9.11.2.4 b) Coordination at I
m
9.11.2.4 c) Coordination at I
Δc
G 9.20.1 Reliability (climatic test)
H IEC 61543:2022, Table 1, Surges
T 5a and T 5b
I IEC 61543:2022, Table 1, Conducted disturbances induced by radio-frequency fields
T 3
IEC 61543:2022, Table 1, Radiated radio-frequency electromagnetic field
T 6
IEC 61543:2022, Table 1, Fast transients (bursts)
T 4
J IEC 61543:2022, Table 1, Conducted, common mode disturbances in the frequency range
T 7 0 Hz to 150 kHz
IEC 61543:2022, Table 1, Electrostatic discharges
T 8
a
Unless otherwise specified, clauses and subclauses refer to IEC 61008-1:2024.

A.2 Number of samples to be submitted for full test procedure
If only one type of RCCB, of one current rating and of one residual current tripping rating is
submitted for test, the number of samples to be submitted to the different test series are those
indicated in Table A.2 where also the minimum performance criteria are indicated.
If all samples submitted according to the second column of Table A.2 pass the tests, compliance
with this document is met. If the minimum number given in the third column only pass the tests,
additional samples as shown in the fourth column shall be tested and all shall then satisfactorily
complete the test sequence.
For RCCBs having only one rated current but more than one residual operating current, two
separate sets of samples shall be submitted to each test sequence, one adjusted to the highest
residual operating current, the other adjusted to the lowest residual operating current.

– 18 – IEC 61008-2-1:2024 © IEC 2024
Table A.2 – Number of samples for full test procedure
Minimum number Number of samples
a
Number of samples
Test sequence
b c
of accepted samples for repeated tests
A 1 1 –
A 3 2 3
B 3 2 3
C 3 2 3
d
D +D 3 3
0 1
d
D 3 3
d
E 3 3
d
F 3 3
G 3 2 3
e
3 2 3
H
e
I 3 2 3
e
J 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 manufacturing
or assembly defects which are not representative of the design.
c
In the case of repeated tests, all samples are required to pass the tests.
d
Permanent arcing or flashover between poles or between poles and frame shall not occur in any sample during
tests of IEC 61008-1:2024, 9.11.2.2, 9.11.2.3, 9.11.2.4.
e
At the manufacturer's request, the same set of samples may be subjected to more than one of these test
sequences.
A.3 Number of samples to be submitted for simplified test procedures in the
case if submitting simultaneously a range of RCCBs of the same
fundamental design
A.3.1 If a range of RCCBs of the same fundamental design, or additions to such a range of
RCCBs are submitted for certification, the number of samples to be tested may be reduced
according to Table A.3.
NOTE For the purposes of this Annex A, the “same fundamental design” covers a range of RCCBs having a series
of rated current (I ), a series of rated residual operating currents (I ) and/or different number of poles.
n Δn
RCCBs can be considered to be of the same fundamental design if all of the following
conditions are met:
1) they have the same basic design, in particular according to the supply conditions (4.1);
2) the residual current operating means have identical tripping mechanisms and identical
relays or solenoids except for the variations permitted in c) and d) below;
3) the materials, finish and dimensions of the internal current carrying parts are identical other
than the variations detailed in a) below;
4) the terminals are of similar design (see b) below);
5) the contact size, material, configuration and method of attachment are identical;
6) the manual operating mechanism, materials and physical characteristics are identical;
7) the moulding and insulating materials are identical;

8) the method, materials and construction of the extinction device are identical;
9) the basic design of the residual current sensing device is identical, for a given type of
characteristic other than the variations permitted in c) below;
10) the basic design of the residual current tripping device is identical except for the variations
permitted in d) below;
11) the basic design of the test device is identical except for the variations permitted in e) below.
The following variations are permitted provided that the RCCBs comply in all other respects
with the requirements detailed in the numbered list above:
a) cross-sectional area of the internal current carrying connections, and lengths of the toroid
connections;
b) size of terminals;
c) number of turns and cross-sectional area of the windings and the size and material of the
core of the differential transformer;
d) the sensitivity of the relay and/or the associated electronic circuit, if any;
e) the ohmic value of the means to produce the maximum ampere turns necessary to conform
to the tests of IEC 61008-1:2024, 9.16. The circuit may be connected across phases or
phase to neutral.
A.3.2 For RCCBs having the same classification according to the supply conditions (4.1),
the behaviour in the presence of DC components and the same classification according to
time-delay, having different current rating and rated residual operating current, the number of
samples to be tested may be reduced, according to Table A.3.
Table A.3 – Number of samples for simplified test procedure
a, g
Test
Number of samples according to number of poles
sequence
b, c d, f, i e
Two poles Three poles Four poles
A 1 max. rating I 1 max. rating I 1 max. rating I
1 n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
A 3 max. rating I 3 max. rating I 3 max. rating I
2 n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
B 3 max. rating I 3 max. rating I 3 max. rating I
n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
C 3 max. rating I 3 max. rating I 3 max. rating I
n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
D + D 3 max. rating I 3 max. rating I 3 max. rating I
0 1 n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
D 1 for all other ratings of I
0 Δn
D 3 max. rating I 3 max. rating I 3 max. rating I
2 n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
E 3 max. rating I 3 max. rating I 3 max. rating I
n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
– 20 – IEC 61008-2-1:2024 © IEC 2024
a, g
Test
Number of samples according to number of poles
sequence
b, c d, f, i e
Two poles Three poles Four poles
F 3 max. rating I 3 max. rating I 3 max. rating I
n n n
min. rating I min. rating I min. rating I
Δn Δn Δn
3 min. rating I 3 min. rating I 3 min. rating I
n n n
max. rating I max. rating I max. rati
...