EN 61008-1:2012/A1:2014

SLOVENSKI STANDARD
01-december-2014
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Residual current operated circuit-breakers without integral overcurrent protection for
household and similar uses (RCCBs) -- Part 1: General rules (IEC 61008-
1:2010/A1:2012 , modified)
Fehlerstrom-/Differenzstrom-Schutzschalter ohne eingebauten Überstromschutz
(RCCBs) für Hausinstallationen und für ähnliche Anwendungen -- Teil 1: Allgemeine
Anforderungen (IEC 61008-1:2010/A1:2012 , modifiziert)
Interrupteurs automatiques à courant différentiel résiduel sans dispositif de protection
contre les surintensités incorporé pour usages domestiques et analogues (ID) -- Partie 1:
Règles générales (CEI 61008-1:2010/A1:2012 , modifiée)
Ta slovenski standard je istoveten z: EN 61008-1:2012/A1:2014
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 61008-1:2012/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 29.120.50
English Version
Residual current operated circuit-breakers without integral
overcurrent protection for household and similar uses (RCCBs) -
Part 1: General rules
(IEC 61008-1:2010/A1:2012 , modified)
Interrupteurs automatiques à courant différentiel résiduel Fehlerstrom-/Differenzstrom-Schutzschalter ohne
sans dispositif de protection contre les surintensités eingebauten Überstromschutz (RCCBs) für
incorporé pour usages domestiques et analogues (ID) - Hausinstallationen und für ähnliche Anwendungen - Teil 1:
Partie 1: Règles générales Allgemeine Anforderungen
(CEI 61008-1:2010/A1:2012 , modifiée) (IEC 61008-1:2010/A1:2012 , modifiziert)
This amendment A1 modifies the European Standard EN 61008-1:2012; it was approved by CENELEC on 2014-08-04. CENELEC
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment 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 CEN-CENELEC Management Centre has the same status
as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61008-1:2012/A1:2014 E

Contents Page
Foreword .3
Common modifications .4

– 3 – EN 61008-1:2012/A1:2014
Foreword
This document (EN 61008-1:2012/A1:2014) consists of the text of IEC 61008-1:2010/A1:2012 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 CLC/TC 23E "Circuit breakers and similar devices for
household and similar applications".
The following dates are fixed:
– latest date by which this document has to be implemented at (dop) 2015-08-04
national level by publication of an identical national standard or
by endorsement
– latest date by which the national standards conflicting with this (dow) 2017-08-04
document have to be withdrawn
Clauses, subclauses, notes, tables, figures and annexes which are additional to those in
IEC 61008-1:2010/A1:2012 are prefixed “Z”.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.

This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for
Use within Certain Voltage Limits (LVD - 2006/95/EC).
This document has been prepared under a mandate given to CENELEC by the European Commission and
the European Free Trade Association, and supports essential requirements of EU Directive(s).
Endorsement notice
The text of the International Standard IEC 61008-1:2010/A1:2012 was approved by CENELEC as a
European Standard with agreed common modifications.

Common modifications
Item Clause Common modifications
1. 1
Replace
“Delete Note 5 and replace it by the following paragraph and new Note 5”
by
“Replace the paragraph beginning by “For RCCBs incorporated…” by the following
paragraph and add a new Note 5:””
Delete “the requirements of IEC 60884-1 or” in the new paragraph.
Add “for socket-outlets” between “national requirements” and “of the country”.
2. 2
Delete the modifications to Clause 2.
3. 4.11 Delete the last dash and Note 3.
Add after common modifications on 4.11:
"Delete subclause 4.Z1.
Renumber subclause “4.Z2 According to the range of ambient air temperature” by
“4.Z1 According to the range of ambient air temperature”."
4. Table 1 Delete the modification to Table 1.
5. Table 3 Delete the modifications to Table 3.
6. 6
Replace
“Replace the contents of item k) by the following:”
by
“Replace the contents of item k) in Table Z3 by the following:”
7. 6 Replace
“Replace in the twelfth paragraph after Note 1, the word “circuit” by “conductor””
by
“Replace in the eleventh paragraph of 6.Z1, the word “circuit” by “conductor””
8. 6 Replace
“Add the following text at the end of Clause 6:”
by
“Add the following text at the end of Clause 6.Z1:”
9. 8.1.3 Delete “before 9.7.1” in the new Note 1.
10. 8.1.3 Delete “Delete, in this table, point 5 in the first column and the existing Note 3.”
Table 5
11. 8.1.4.4
Replace
“In the subclause, replace the existing text by the following:”
by
“In the subclause, replace the existing text before the note by the following:”

– 5 – EN 61008-1:2012/A1:2014
Item Clause Common modifications
12. 8.1.5.1 Replace
“Delete the second paragraph and the note in this subclause.”
by
"Insert a second paragraph:
In this standard, only terminals for copper conductors are considered."
13. 8.1.5.1 Replace
“Annex J, K or L”
by
“Annex J or K”
14. 8.1.5.2 Replace
“or terminals for external untreated aluminium conductors and with aluminium screw-
type terminals for use with copper or with aluminium conductors according to
Annex L.”
by
“VOID”
15. 8.1.5.2 Delete “NOTE Information on AWG is given in Annex ID.”
Table 6
16. 9.1.1 After “Delete, in this table, the dashed item “– Resistance of the insulation against an
Table 9 impulse voltage””, add a new paragraph:
"Add, in this table, at the end of the existing list, in the second column, the following
subclause corresponding to “Behaviour at low ambient air temperatures of RCCBs
classified for use in the range of –25 °C to +40 °C”:
9.Z1"
17. 9.5.1 Delete “NOTE Information on AWG is given in Annex ID.”
18. 9.7.7.2
Delete twice “(or path)”
19. 9.7.7.4.1 Delete the two following rows:
Table 22
Single-phase system
with mid-point earthed
3,5 3,5 3,4 3,2 3,0
a)
120/240
Single phase system
6,2 6,0 5,8 5,6 5,0
b)
120/240 240
Replace
“Three-phase systems 230/400”
by
“Single-phase systems 230 or 400
Three-phase systems 400 or 230/400”
a) b)
Delete the two footnotes and .
20. 9.7.7.4.3
Delete twice “(or path)”
Item Clause Common modifications
21. 9.7.7.5 In the paragraph after Note 1, replace
“50 Hz/60 Hz”
by
“50 Hz”
22. 9.7.7.5
Delete “(or path)” in the first dashed item.
23. 9.7.7.5 Replace the last sentence of the paragraph after Note 4 by
“One test only is made, on one pole taken at random, with measurement of break
time: the latter shall not exceed the value specified in Table 1 at l .”
∆n
24. 9.7.7.5 Delete the last paragraph “This test is not applied to devices with solid neutral.”
25. 9.11.2.1 a)
In the first modification, replace
“Figures 8, 9, 10, 11 and 12”
by
“Figures 7 and 12”
26. 9.11.2.1 a) Delete the modification “Replace, in the existing eighth paragraph of item a), the
words “The additional impedance Z ” by “The additional impedance Z ””.
3 1
27. 9.11.2.1 a) Delete the modification “Replace, in the fifth paragraph after the existing Note 3, the
words “resistor R ” by “resistor R ”.
1 2
28. 9.11.2.1 e) Replace
"Replace, in the second paragraph of item e), the words “the current sensor O ” by
“the current sensor”."
by
"Replace, in the second paragraph of item e), the words “the current sensor I , I , I ,
1 2 3
I ” by “the current sensor”."
29. 9.11.2.1 e)
Delete the modification “Replace, in the third paragraph of item e), the word “Z ” by
“Z ”.”
30. 9.11.2.3
Replace in the last modification
“fifth paragraph”
by
“fourth paragraph”
31. 9.14 Replace
“From the fifth to the ninth paragraph”
by
“From the sixth to the tenth paragraph”.
32. 9.19.1 Delete the modification to 9.19.1.
33. 9.25
Replace
"Add before Figure 1 the following new subclause:”
by
“Add before 9.Z1 the following new subclause:“

– 7 – EN 61008-1:2012/A1:2014
Item Clause Common modifications
34. Before In the first line of the modification, replace
Figure 7
“to 12”
by
“and 12”
35. Figure 8
Replace
“Figure 8 – Test circuit for the verification of the rated making and breaking capacity
and of the coordination with a SCPD of a single-pole RCCB with two current paths
(9.11)
Replace Figure 8 by the following:”
by
“Figure 8 – Void
Reintroduce Figure 8 as follows:”
36. Figure 9 Replace
“Figure 9 – Test circuit for the verification of the rated making and breaking capacity
and of the coordination with a SCPD of a two-pole RCCB, in case of a single-phase
circuit (9.11)
Replace Figure 9 by the following:”
by
“Figure 9 – Void
Reintroduce Figure 9 as follows:”
37. Annex A
Replace the test sequence G of the new Table A.1 by
Table A.1
G 9.22.1 Reliability (climatic tests)
G 9.Z1 Verification of correct operation at
low ambient air temperature of
RCCBs operating at temperatures
between -25 °C and + 40 °C
38. Annex A
Replace
Table A.2
“In Table A.2, replace A by A .
In Table A.2, add a new row after the new A containing the following:
A 3 2 3
”
by
“In Table A.2, replace A by the following:
A 1 1 -
A 3 2 3
f
and delete footnote ”
39. Annex J
Replace
“Add the following new Annex J:”
by
“Replace Annex J by the following:”

Item Clause Common modifications
40. Annex J In the first paragraph, replace
J.1
“with screwless terminals”
by
“with universal screwless terminals”
41. Annex J
Replace Note 1 by
J.1
“NOTE 1  Non-universal terminals are subject to special national conditions.”
42. Annex J Delete Note 1 to entry in Definition J.3.3.
J.3.3
43. Annex J
Replace
J.6
“Non-universal terminals:”
by
“Non-universal terminals (if accepted by Special National Conditions):”
44. Annex J Replace Table J.1 by
J.8.2
Table J.1 – Connectable conductors
Table J.1
Connectable conductors and their theoretical diameter
Rigid Flexible
Solid Stranded
2 2
mm ∅ mm ∅ mm mm ∅ mm
1,0 1,2 1,4 1,0 1,5
1,5 1,5 1,7 1,5 1,8
2,5 1,9 2,2 2,5 2,3
4,0 2,4 2,7 4,0 2,9
NOTE Diameters of the largest rigid and flexible conductors are based on Table C.1 of
IEC 60228:2004.
45. Annex J Delete the last four references (ASTM B172-01a, ICEA S-19-81 / NEMA WC3,
J.10
ICEA S-66-524 / NEMA WC7 and ICEA S-68-516 / NEMA WC8).
46. Annex K
Delete Note 1.
K.1
47. Annex K At the end of the second paragraph, delete “(AWG equal to or greater than 12).”
K.1
48. Annex K Delete Note 1.
K.8.2.2
49. Annex L
Delete Annex L.
– 9 – EN 61008-1:2012/A1:2014
Item Clause Common modifications
50. Annex ZA Add the following new modifications:
"Annex ZA (normative) Normative references to international publications with
their corresponding European publications
Delete the reference to IEC 60051.
Add the following new references to the existing list:
Publication Year Title EN/HD Year
IEC 60228 2004 Conductors of insulated cables EN 60228 2005
+ corr. May 2005
IEC 60664-3 - Insulation coordination for equipment EN 60664-3 -
within low-voltage systems
Part 3: Use of coating, potting or
moulding for protection against pollution
Replace the reference to IEC 61543 by the following:
IEC 61543 1995 Residual current-operated protective EN 61543 1995
- - devices (RCDs) for household and + corr. December 1997
+ A1 (mod) 2004 similar use - Electromagnetic + A11 2003
- - compatibility + corr. May 2004
+ A2 2005 + A2 2006
- - + A12 2005
"
51. Annex ZXX Add a new modification
Annex ZXX (informative) List of clauses that require retesting
Replace the contents of Annex ZXX by:
“Based on EN 61008-1:2012, the following tests and/or requirements have been
technically modified and may require retesting or inspection as applicable:
− 9.5 Test of reliability of screw-type terminals for external copper conductors
− 9.7.7.5 Verification of the behaviour of components bridging the basic insulation
− 9.14 Test of resistance to abnormal heat and to fire”
52. Bibliography Replace
“IEC 60664-5”
by
“EN 60664-5”
Replace
“IEC 60695-2-11:2000”
by
“EN 60695-2-11:2001"
IEC 61008-1 ®
Edition 3.0 2012-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Residual current operated circuit-breakers without integral overcurrent

protection for household and similar uses (RCCBs) –

Part 1: General rules
Interrupteurs automatiques à courant différentiel résiduel sans dispositif de

protection contre les surintensités incorporé pour usages domestiques et

analogues (ID) –
Partie 1: Règles générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XA
CODE PRIX
ICS 29.120.50 ISBN 978-2-83220-018-6

– 2 – 61008-1 Amend.1 © IEC:2012
FOREWORD
This amendment has been prepared by subcommittee 23E: Circuit-breakers and similar
equipment for household use, of IEC technical committee 23: Electrical accessories.
The text of this amendment is based on the following documents:
FDIS Report on voting
23E/740/FDIS 23E/744/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
1 Scope
Delete Note 5 and replace it by the following paragraph and new Note 5:
For RCCBs incorporated in, or intended only for association with socket-outlets, the
requirements of this standard may be used, as far as applicable, in conjunction with the
requirements of IEC 60884-1 or the national requirements of the country where the product is
placed on the market.
NOTE 5 RCCBs incorporated in, or intended only for association with socket-outlets, can either meet IEC 62640
or this standard.
2 Normative references
Delete the reference to IEC 60051.
Add to the existing list, the following new references:
IEC 60228:2004, Conductors of insulated cables
IEC 60664-3, Insulation coordination for equipment within low-voltage systems - Part 3: Use
of coating, potting or moulding for protection against pollution
Replace the reference to IEC 61543:1995 by the following new reference:
IEC 61543:1995, Residual current-operated protective devices (RCDs) for household and
similar use – Electromagnetic compatibility

61008-1 Amend.1 © IEC:2012 – 3 –
Amendment 1(2004)
Amendment 2 (2005)
4.10 According to the method of connection
In this subclause, replace the existing text and note by the following:
– RCCBs, the electrical connections of which are not associated with the mechanical
mounting;
– RCCBs, the electrical connections of which are associated with the mechanical mounting.
NOTE Examples of this type are:
– plug-in type;
– bolt-on type;
– screw-in type.
Some RCCBs may be of the plug-in type or bolt-on type on the line side only, the load terminals being usually
suitable for wiring connection.
Add the following new subclause:
4.11 According to the type of terminals:
– RCCBs with screw-type terminals for external copper conductors;
– RCCBs with screwless type terminals for external copper conductors;
NOTE 1 The requirements for RCCBs equipped with this type of terminals are given in Annex J.
– RCCBs with flat quick-connect terminals for external copper conductors;
NOTE 2 The requirements for RCCBs equipped with these types of terminals are given in Annex K.
– RCCBs with screw-type terminals for external aluminium conductors;
NOTE 3 The requirements for RCCBs equipped with these types of terminals are under consideration.
Table 1 – Limit values of break time and non-actuating time for alternating residual
currents (r.m.s values) for type AC and A RCCB
Replace, in this Table, the word “non-operating” by “non-actuating”.
Table 3 – Rated impulse withstand voltage as a function of the nominal voltage of the
installation
Replace, in Note 2, "see Table 15" by "see Table 22".
Replace, in table footnote a), "(see Tables 5 and 15)" by "(see Tables 5 and 22)".
6 Marking and other product information
Replace the contents of item k) by the following:
k) the position of use, if necessary;
Replace in the twelfth paragraph after Note 1, the word “circuit” by “conductor”
Add the following text at the end of Clause 6:
For universal terminals (for rigid-solid, rigid-stranded and flexible conductors):
– no marking.
– 4 – 61008-1 Amend.1 © IEC:2012
For non-universal terminals:
– terminals declared for rigid-solid conductors only shall be marked by the letters “s” or
"sol";
– terminals declared for rigid (solid and stranded) conductors only shall be marked by the
letter "r".
The markings should appear on the RCCB or, if the space available is not sufficient, on the
smallest package unit or in technical information.
8.1.3 Clearances and creepage distances (see Annex B)
Replace the existing text of this subclause by the following:
The minimum required clearances and creepage distances are given in Table 5 which is
based on the RCCB being designed for operating in an environment with pollution degree 2.
Compliance for item 1 in Table 5 is checked by measurement and by the test of 9.7.7.4.1 and
9.7.7.4.2. The test is carried out with samples not submitted to the humidity treatment
described in 9.7.1.
The clearances of items 2, 4 and 5 may be reduced provided that the measured clearances
are not shorter than the minimum allowed in IEC 60664-1 for homogenous field conditions.
In this case, after the humidity treatment described in 9.7.1, compliance for items 2, 4 and 5
and arrangements of 9.7.2 items b), c), d) and e) is checked in the following order:
– Tests according to 9.7.2 to 9.7.6 as applicable,
– Test according to 9.7.7.2 is applied with test voltages given in Table 16 with test
arrangements of 9.7.2 items b), c), d), e).
If measurement does not show any reduced clearance, test in 9.7.7.2 is not applied.
Compliance for item 3 in Table 5 is checked by measurement.
NOTE 1 All measurements required in 8.1.3 are carried out in Test sequence A on one sample and the tests of
9.7.7.2 are carried out before 9.7.1 on three samples of Test sequence B.
Parts of PCBs connected to the live parts protected against pollution by the use of a type 2
protection according to IEC 60664-3 are exempt from this verification.
The insulating materials are classified into material groups on the basis of their comparative
tracking index (CTI) according to 4.8.1 of IEC 60664-1:2007.
NOTE 2 Information on the requirements for design of solid insulation and appropriate testing is provided in
IEC 60664-1:2007, 5.3 and 6.1.3.
NOTE 3 For clearances on printed wiring material, the following Note 3 Table F.2 in 60664-1:2007 can be used:
“For printed wiring material, the values for pollution degree 1 apply except that the value shall not be less than
0,04 mm, as specified in Table F.4.” For creepage distances on printed wiring material, distances in Table F.4 in
60664-1:2007 can be used if protected with a coating meeting IEC 60664-3 requirements and tests.
NOTE 4 The dimensioning of clearances and creepage distances for spacings equal to or less than 2 mm for
printed wiring board may be optimised under certain conditions in case of use of IEC 60664-5. Only humidity levels
HL2 and HL3 are considered.
Table 5 – Minimum clearances and creepage distances
Delete, in this table, point 5 in the first column and the existing Note 3.
e
by the following text:
Replace, in this table, the last sentence of the existing footnote

61008-1 Amend.1 © IEC:2012 – 5 –
When interpolating, linear interpolation shall be used and values shall be rounded to the same number of digits as
the values picked up from the tables. For determination of creepage distances, see Annex B.
8.1.4.4
In the subclause, replace the existing text by the following:
Current-carrying parts including parts intended for protective conductors, if any, shall be
made of a metal having, under the conditions occurring in the equipment, mechanical
strength, electrical conductivity and resistance to corrosion adequate for their intended use.
Examples of suitable materials are given below:
– copper;
– an alloy containing at least 58 % copper for parts worked cold, or at least 50 % copper for
other parts;
– other metal or suitably coated metal, no less resistant to corrosion than copper and having
mechanical properties no less suitable.
Replace the existing note of this subclause by the following text:
In case of using ferrous alloys or suitably coated ferrous alloys, compliance to resistance to
corrosion is checked by a test of resistance to rusting (9.25).
This correction applies to the French text only.

8.1.5.1
Delete the second paragraph and the note in this subclause.
Replace the contents of the last paragraph by the following:
Compliance is checked by inspection, by the tests of 9.5 for screw-type terminals, by specific
tests for plug-in or bolt-on RCCBs included in the standard, or by the tests of Annex J, K or L,
as relevant for the type of connection.
8.1.5.2
Replace the existing text and Table 6 by the following:
RCCBs shall be provided with:
– either terminals which shall allow the connection of copper conductors having nominal
cross sectional areas as shown in Table 6;
NOTE Examples of possible designs of screw-type terminals are given in Annex IC.
– or terminals for external untreated aluminium conductors and with aluminium screw-type
terminals for use with copper or with aluminium conductors according to Annex L.
Compliance is checked by inspection, by measurement and by fitting, in turn, one conductor
of the smallest and one of the largest cross-sectional area as specified.

– 6 – 61008-1 Amend.1 © IEC:2012
Table 6 – Connectable cross-sections of copper conductors for screw-type terminals
b
a) )
Rated current Range of nominal cross-section to be clamped
A mm
c
Rigid (solid or stranded )
Greater than Up to and including Flexible conductors
conductors
– 13 1 to 2,5 1 to 2,5
13 16 1 to 4 1 to 4
16 25 1,5 to 6 1,5 to 6
25 32 2,5 to 10 2,5 to 6
32 50 4 to 16 4 to 10
50 80 10 to 25 10 to 16
80 100 16 to 35 16 to 25
100 125 25 to 50 25 to 35
NOTE Information on AWG is given in Annex ID.
a)
A range of RCCBs having the same fundamental design and having the same design and construction of
terminals, the terminals are fitted with copper conductors of the smallest cross-section for the minimum rated
current and largest cross-section for the maximum rated current, as specified, solid and stranded, as
applicable.
b)
It is required that, for current ratings up to and including 50 A, terminals be designed to clamp solid
conductors as well as rigid stranded conductors. Nevertheless, it is permitted that terminals for conductors
2 2
having cross-sections from 1 mm up to 6 mm be designed to clamp solid conductors only.
c)
2 2
Rigid stranded conductors shall be used for conductors having cross-sections from 1,5 mm up to 50 mm
and shall be in compliance with class 2 of IEC 60228, related to stranded conductors for single-core.

8.3 Dielectric properties and isolating capability
Delete, in the last paragraph, the words “and 9.20”
Table 9 – List of type tests
Replace, in this table, the dashed item “Limiting values of the non-operating current under
overcurrent conditions” by the following new dashed item:
– Verification of limiting value of the non-operating current under overcurrent conditions
Delete, in this table, the dashed item “– Resistance of the insulation against an impulse
voltage”.
Add, in this table, at the end of the existing list, the following dashed item:
– Resistance to rusting
Add, in this table, at the end of the existing list, in the second column, the following subclause
corresponding to “Resistance to rusting”:
9.25
9.5 Test of reliability of terminals for external conductors
Replace the title of this subclause by the following:
9.5 Tests of reliability of screw-type terminals for external copper conductors
9.5.1
Replace the contents of this subclause by the following text:

61008-1 Amend.1 © IEC:2012 – 7 –
The terminals are fitted with copper conductors of the same type (solid, stranded or flexible)
of the smallest and largest cross-sections specified in Table 6.
The terminal shall be suitable for all types of conductors: rigid (solid or stranded) and flexible,
unless otherwise specified by the manufacturer.
Terminals shall be tested with the minimum and maximum cross-section of each type of
conductors on new terminals as follows:
– tests for solid conductors shall use conductors having cross-sections from 1 mm up to
6 mm , as applicable;
– tests for stranded conductors shall use conductors having cross-sections from 1,5 mm up
to 50 mm , as applicable;
– tests for flexible conductors shall use conductors having cross-sections from 1 mm up to
35 mm , as applicable.
NOTE Information on AWG is given in Annex ID.
The conductor is inserted into a new terminal for the minimum distance prescribed or, where
no distance is prescribed, until it just projects from the far side, and in the position most likely
to assist the wire to escape.
The clamping screws are then tightened with a torque equal to two-thirds of that shown in the
appropriate column of Table 11.
Each conductor is then subjected to a pull of the value, in newtons, shown in Table 12,
according to the relevant cross-section of the tested conductor.
The pull is applied without jerks, for 1 min, in the direction of the axis of the conductor space.
When it is necessary, the tested values, for the different cross-sections with the relevant
pulling force, shall be clearly indicated in the test report.
Table 12 – Pulling forces
Replace this table by the following new Table 12:

Cross-section of the 1 up to
Above 4 up Above 6 up Above 10 up Above 16 up
conductor inserted in the and
to and to and to and to and
terminal including
including 6 including 10 including 16 including 50
mm 4
Pull
50 60 80 90 100
N
9.5.3
Replace the first sentence of this subclause by the following:
The terminals are fitted with the largest cross-section area specified in Table 6, for stranded
and/or flexible copper conductor.
Delete Table 13
This correction applies to the French text only.

– 8 – 61008-1 Amend.1 © IEC:2012
This correction applies to the French text only.
9.7.1.4 Condition of the RCCB after the test
Replace the existing text by the following:
After this treatment, the sample shall show no damage within the meaning of this standard
and shall withstand the tests of 9.7.2, 9.7.3, 9.7.4, 9.7.6 and 9.7.7.2 (if applicable).
9.7.7.1 Verification of impulse withstand voltage across the open contacts
(suitability for isolation)
Replace the existing title and text of this subclause by the following:
9.7.7.1 General testing procedure for the impulse withstand voltage tests
The impulses are given by a generator producing positive and negative impulses having a
front time of 1,2 μs, and a time to half-value of 50 μs, the tolerances being as follows:
± 5 % for the peak value;
± 30 % for the front time;
± 20 % for the time to half-value.
For each test, five positive impulses and five negative impulses are applied. The interval
between consecutive impulses being at least 1 s for impulses of the same polarity and being
at least 10 s for impulses of the opposite polarity.
When performing the impulse voltage test on complete RCCB, the attenuation or amplification
of the test voltage shall be taken into account. It needs to be assured that the required value
of the test voltage is applied across the terminals of the equipment under test.
The internal impedance of the test apparatus shall have a nominal value not higher than 500
Ω.
NOTE 1 In 9.7.7.2, for the verification of clearances within the basic insulation, on complete RCCB, a very low
impedance of the generator is needed for the test. For this purpose, a hybrid generator with a virtual impedance of
2 Ω is appropriate if internal components are not disconnected before testing. However, in any case, a
measurement of the correct test voltage directly at the clearance is needed.
The shape of the impulses is adjusted with the RCCB under test connected to the impulse
generator. For this purpose, appropriate voltage dividers and voltage sensors shall be used. It
is recommended to disconnect surge protective components before testing.
NOTE 2 For RCCBs with incorporated surge arresters that cannot be disconnected, the shape of the impulses is
adjusted without connection of the RCCB to the impulse generator.
Small oscillations in the impulses are allowed, provided that their amplitude near the peak of
the impulse is less than 5 % of the peak value.
For oscillations on the first half of the front, amplitudes up to 10 % of the peak value are
allowed.
There shall be no disruptive discharge (sparkover, flashover or puncture) during the tests.
NOTE 3 It is recommended that an oscilloscope be used to observe the impulse voltage in order to detect
disruptive discharge.
9.7.7.2 Verification of impulse withstand voltage for the parts not tested in 9.7.7.1
Replace the existing title and text of this subclause by the following:

61008-1 Amend.1 © IEC:2012 – 9 –
9.7.7.2 Verification of clearances with the impulse withstand voltage
If the measurement of clearances of items 2 and 4 of Table 5 and arrangements given in 9.7.2
b), c) d) and e) shows a reduction of the required length this test applies. This test is carried
out immediately after the measurement of the insulation resistance in 9.7.4.
NOTE The measurement of the clearances can be replaced by this test.
The test is carried out on a RCCB fixed on a metal support and being in the closed position.
The test impulse voltage values shall be chosen in Table 16 in accordance with the rated
impulse withstand voltage of the RCCB as given in Table 3. These values are corrected for
barometric pressure and/or altitude at which the tests are carried out, according to Table 16.
A first series of tests is made applying the impulse voltage between:
– the phase pole(s) and the neutral pole (or path) connected together,
– and the metal support connected to the terminal(s) intended for the protective
conductor(s), if any.
A second series of tests is made applying the impulse voltage between:
– the phase pole(s), connected together,
– and the neutral pole (or path) of the RCCB, as applicable.
A third series of tests is made applying the impulse voltage between arrangements given in
9.7.2 b), c), d) and e) and not tested during the two first sequences described here above.
There shall be no disruptive discharge. If, however, only one such disruptive discharge
occurs, ten additional impulses having the same polarity as that which caused the disruptive
discharge are applied, the connections being the same as those with which the failure
occurred.
No further disruptive discharge shall occur.
Table 16 − Test voltage for verification of impulse withstand voltage for the parts not
tested in 9.7.7.1
Replace the title of this table by the following:
Table 16 − Test voltage for verification of impulse withstand voltage
9.7.7.3 Verification of leakage currents across open contacts (suitability for isolation)
Replace the first paragraph of this subclause by the following text:
Each pole of a RCCB having been submitted to one of the applicable tests of 9.11.2.2,
9.11.2.3, 9.11.2.4a), 9.11.2.4b) 9.11.2.4c) is supplied at a voltage 1,1 times its rated
operational voltage, the RCCB being in the open position.
Add the following new subclauses 9.7.7.4, 9.7.7.4.1, 9.7.7.4.2, 9.7.7.4.3 and 9.7.7.5:
9.7.7.4 Verification of resistance of the insulation of open contacts and basic
insulation against an impulse voltage in normal conditions
9.7.7.4.1 General
These tests are not preceded by the humidity treatment described in 9.7.1.

– 10 – 61008-1 Amend.1 © IEC:2012
NOTE The tests in 9.7.7.4, as stated in requirements of 8.1.3, will be carried out before 9.7.1 on three samples of
Test sequence B.
The test impulse voltage values shall be chosen from Table 22, in accordance with the rated
voltage of the installation for which the RCCB is intended to be used as given in Table 3.
These values are corrected for barometric pressure and/or altitude at which the tests are
carried out, according to Table 22.
Table 22 – Test voltage for verifying the suitability for isolation,
referred to the rated impulse withstand voltage of the RCCB
and the altitude where the test is carried out
Nominal voltage of the Test voltages at corresponding altitude
installation
U a.c. peak
1,2/50
V
kV
Sea level 200 m 500 m 1 000 m 2 000 m
Single-phase system
3,5 3,5 3,4 3,2 3,0
with mid-point earthed
a)
120/240
Single phase system
6,2 6,0 5,8 5,6 5,0
b)
120/240 240
Three-phase systems
6,2 6,0 5,8 5,6 5,0
230/400
a)
For installation practice in Japan.
b)
For installation practice in North American countries.

9.7.7.4.2 RCCB in opened position
The series of tests is carried out on a RCCB fixed on a metal support as in normal use.
The impulses are applied between:
– the line terminals connected together,
– and the load terminals connected together with the contacts in the open position.
There shall be no disruptive discharges during the test.
9.7.7.4.3 RCCB in closed position
The series of tests is carried out on a RCCB fixed on a metal support, wired as in normal use
and being in closed position.
All components bridging the basic insulation have to be disconnected.
NOTE If necessary, separate samples can be prepared by the manufacturer.
A first series of tests is made, the impulses being applied between:
– the phase pole(s) and the neutral pole (or path) connected together,
– and, the metal support connected to the terminal(s) intended for the protective
conductor(s), if any.
A second series of tests is made, the impulses being applied between:
– the phase pole(s), connected together
– and the neutral pole (or path) of the RCCB.

61008-1 Amend.1 © IEC:2012 – 11 –
There shall be no disruptive discharge. If, however, only one such disruptive discharge
occurs, ten additional impulses having the same polarity as that which caused the disruptive
discharge are applied, the connections being the same as those with which the failure
occurred.
No further disruptive discharge shall occur.
Afterwards, a new sample is tested according to 9.7.7.5.
9.7.7.5 Verification of the behaviour of components bridging the basic insulation
A new RCCB sample is tested in order to check that components bridging the basic insulation
would not reduce safety with respect to short term temporary overvoltages.
NOTE 1 Afterward, it is necessary to ensure that components, bridging the basic insulation and having been
disconnected during the impulse voltage test for testing the basic insulation, would not impair the behaviour or the
safety of the basic insulation of the equipment during normal use.
The test voltage has a frequency of 50 Hz/60 Hz. In accordance with IEC 60364-4-44:2007,
Table 44.A.2, and to IEC 60664-1, the r.m.s. value of the test voltage for the basic insulation
is 1 200 V + Uo . Uo being the nominal voltage value between line and neutral.
NOTE 2 This test is performed only on RCBOs, where components bridging the basic insulation have been
disconnected during the impulse voltage test of 9.7.7.4.3.
NOTE 3 As an example, for an RCCB having a rated voltage of U = 250 V, the value of the a.c. test voltage for
basic insulation is 1 200 V + 250 V, thus the r.m.s. test voltage is 1 450 V.
The voltage is applied during 5 s between:
– the phase pole(s) and the neutral pole (or path) connected together,
– and the metal support connected to the terminal(s) intended for the protective
conductor(s), if any.
The equipment is then visually inspected; no component bridging the basic insulation should
show a visible alteration.
NOTE 4 It is accepted to replace a fuse before connecting the equipment to the mains. If a fuse protecting a
surge arrester has blown, it is accepted to replace the surge arrester too.
Then, the equipment is connected to the mains in accordance with the manufacturer’s
instruction. Under the condition of 9.9.2.3, the RCCB shall trip with a test current of 1,25 I .
Δn
One test only is made on one pole, taken at random, without measurement of break time.
This test is not applied to devices with solid neutral.
9.9.1 Test circuit
Replace the last three paragraphs of this subclause by the following:
The instruments for the measurement of the residual current shall show (or permit to
determine) the true r.m.s. value.
NOTE The information for instrument measurement is available at the following CTL webserver:
http://www.iecee.org/ctl/sheet/pdf/CTL%20DSH%20251B%20Beijing%202009_05_15.pdf
For RCCBs having more than one rated frequency, the tests shall be carried out at the lowest
and highest frequency, except for test in 9.9.3 (Verification of the correct operation with load
at the reference temperature), where verification is performed at only one frequency.

– 12 – 61008-1 Amend.1 © IEC:2012
9.11.2.1 General conditions for test
a) Test circuit
Replace, in the existing item a) of this subclause, the words “Figures 8, 9, 10, 11 and 12” by
“Figures 7, 8 and 9”.
Replace the second paragraph of the existing item a) of this subclause by the following text:
The supply S feeds a circuit including impedance Z, the SCPD (if any) (see 3.4.8), the RCCB
under test (D), and the additional impedance Z1 and / or Z2, as applicable.
Replace, in the fourth paragraph of item a), the first sentence by the following text:
The reactors L shall be preferably air-cored.
This correction applies to the French text only.
Replace the contents of the fifth paragraph of item a) by the following text:
Since the transient recovery voltage characteristics of test circuits including large air-cored
reactors are not representative of normal service conditions, the air-cored reactor in any
phase shall be shunted by a resistor R taking approximately 0,6 % of the current through the
reactor (see Figure 9). This resistor may be omitted if agreed by the manufacturer.
Add the following text between the existing fifth and sixth paragraphs of item a):
If iron-core reactors are used, the iron-core power losses of these reactors shall not exceed
the losses that would be absorbed by the resistors connected in parallel with the air-cored
reactors.
Replace, in the existing sixth paragraph of item a) the words “the resistors R and reactors L
are inserted” by “the impedance L is inserted”.
Replace, in the existing seventh paragraph of item a), the words “the resistors R” by “the
impedance Z”.
Replace, in the existing eighth paragraph of item a), the words “The additional impedance Z
3”
The additional impedance Z
by “ 1”.
Add the words “under test” at the end of the existing Note 2.
Replace, in the fifth paragraph after the existing Note 3, the words “resistor R ” by “resistor
R ”.
Replace the existing sixth and seventh paragraphs after Note 3, before the two dashed items,
by the following text:
The voltage sensors are connected:
Replace, in the second paragraph of item e), the words “the resistors R and the reactors L are
adjusted” by “the impedance Z are adjusted”.
Replace, in the second paragraph of item e), the words “the current sensor O ”
...