IEC 61009-2-2:2024
(Main)Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 2-2: RCBOs according to classification 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6
Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 2-2: RCBOs according to classification 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6
IEC 61009-2-2:2024 applies to residual current operated circuit-breakers, with integral overcurrent protection, for household and similar uses (hereafter referred to as RCBOs), classified according to IEC 61009-1:2024, 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6. RCBOs 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 and rated short‑circuit capacities not exceeding 25 000 A for operation at 50 Hz or 60 Hz.
This second edition cancels and replaces the first edition published in 1991. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) harmonization of all clauses between the IEC 61008, IEC 61009 and IEC 60755 series using blocks and modules approach;
b) harmonization of all tables and figures between the IEC 61008, IEC 61009 and IEC 60755 series;
c) terms and definitions are now referred to IEC 62873-2;
d) modification of 4.1 for classification according to supply conditions;
e) modification of Clause 6 for markings of RCBOs with a functional earth (FE);
f) specific tests for operating characteristics of RCBO according to classifications 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6;
g) specific test conditions for dielectric properties (9.7), temperature-rise (9.8), electrical and mechanical endurance (9.10), short-circuit tests (9.11), verification of trip-free (9.15), behaviour in the event of loss of the supply voltage (9.17), surge current tests (9.19), reliability (9.20), ageing (9.21) and temporary overvoltage TOV (9.24);
h) additional tests for RCBOs with a terminal connected to the FE: Connecting capacity of FE terminal (9.200); Limitation of standing current in the FE (9.201).
Interrupteurs automatiques à courant différentiel résiduel avec protection contre les surintensités incorporée pour installations domestiques et analogues (DD) - Partie 2-2: DD conformes aux 4.1.2, 4.1.3, 4.1.4, 4.1.5 et 4.1.6
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IEC 61009-2-2 ®
Edition 2.0 2024-11
INTERNATIONAL
STANDARD
Residual current operated circuit-breakers with integral overcurrent protection
for household and similar uses (RCBOs) –
Part 2-2: RCBOs according to classification 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6
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IEC 61009-2-2 ®
Edition 2.0 2024-11
INTERNATIONAL
STANDARD
Residual current operated circuit-breakers with integral overcurrent protection
for household and similar uses (RCBOs) –
Part 2-2: RCBOs according to classification 4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.50 ISBN 978-2-8327-0013-6
– 2 – IEC 61009-2-2:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 Classification . 7
4.1 According to the supply conditions . 7
5 Characteristics of RCBOs . 8
5.1 Summary of characteristics . 8
5.2 Rated quantities and other characteristics . 8
5.3 Standard and preferred values . 8
6 Marking and other product information . 8
6.200 Marking of RCBOs classified according to 4.1.3 . 8
6.201 Marking of RCBOs classified according to 4.1.5 and 4.1.6 . 9
7 Standard conditions for operation in service and for installation . 9
8 Requirements for construction and operation . 9
8.12 Requirements for RCBOs in the event of loss of supply . 10
8.17 Resistance to temporary overvoltages (TOV) . 10
8.200 Standing current in the FE under normal conditions . 11
8.201 Standing current in the FE in the case of RCBO supplied from just one
phase and FE . 11
9 Tests . 11
9.1 General . 11
9.7 Test of dielectric properties . 11
9.8 Test of temperature-rise . 12
9.9 Verification of the operating characteristics . 13
9.10 Verification of mechanical and electrical endurance . 17
9.11 Short-circuit tests . 18
9.15 Verification of the trip-free mechanism . 18
9.17 Verification of the behaviour of RCBOs in the event of loss of the supply
voltage . 19
9.18 Void . 20
9.19 Verification of the behaviour of RCBOs in the event of current surges caused
by impulse voltages . 20
9.20 Verification of reliability . 21
9.21 Verification of withstand against ageing . 21
9.22 Electromagnetic compatibility (EMC) . 21
9.24 Verification of the behaviour of the RCBO under temporary overvoltage
(TOV) condition. 21
9.200 Test of the maximum connecting capacity of FE terminal . 22
9.201 Verification of the limitation of the standing current in the FE . 22
Annex A (normative) Test sequence and number of samples to be submitted for
certification purposes . 32
A.1 Test sequences . 32
A.2 Number of samples to be submitted for full test procedure . 34
A.3 Number of samples to be submitted for simplified test procedures if
submitting simultaneously a range of RCBOs of the same fundamental
design . 35
Annex D (normative) Routine tests . 38
D.3 Dielectric strength test . 38
Bibliography . 39
Figure 22 – Example for test circuit for verification of ageing of electronic components . 24
Figure 26 – Gauges of Form A and Form B . 24
Figure 28 – Test circuit for the verification of operating characteristics and trip-free
mechanism for RCBO classified according to 4.1.2 to 4.1.6 . 25
Figure 29 – Test circuit for the verification of the correct operation in the event of
residual pulsating direct currents . 26
Figure 30 – Test circuit for the verification of the correct operation in the event of
residual pulsating direct currents in the presence of a standing smooth direct current of
0,006 A . 27
Figure 31 – Test circuit for verification of the standing current in the FE . 28
Figure 33 – Typical diagram for all short circuit tests except for 9.11.11.1 for RCBOs
according to 4.1.3 . 30
Figure 34 – Typical diagram for short circuit tests according to 9.11.11.1 for RCBOs
according to 4.1.3 . 31
Table 33 – Requirements for RCBOs classified according to 4.1.2 to 4.1.6 . 23
Table 200 – Gauges for the verification of the rated connecting capacity of the
FE terminal . 23
Table 201 – Additional withstand values and duration of temporary overvoltages for
RCBOs classified according to 4.1.3 . 23
Table A.1 – Test sequences . 32
Table A.2 – Number of samples for full test procedure . 34
Table A.3 – Number of samples for simplified test procedure . 36
Table A.4 – Test sequences for RCBOs having different instantaneous tripping
currents . 37
Table A.5 – Test sequences for RCBOs of different classification according to
IEC 61009-1:2024, 4.3 . 37
– 4 – IEC 61009-2-2:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
RESIDUAL CURRENT OPERATED CIRCUIT-BREAKERS
WITH INTEGRAL OVERCURRENT PROTECTION
FOR HOUSEHOLD AND SIMILAR USES (RCBOs) –
Part 2-2: RCBOs according to classification
4.1.2, 4.1.3, 4.1.4, 4.1.5 and 4.1.6
FOREWORD
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