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IEC 60898-1
Edition 2.0 2019-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Electrical accessories – Circuit-breakers for overcurrent protection
for household and similar installations –
Part 1: Circuit-breakers for a.c. operation
Petit appareillage électrique – Disjoncteurs pour la protection
contre les surintensités pour installations domestiques et analogues –
Partie 1: Disjoncteurs pour le fonctionnement en courant alternatif
IEC 60898-1:2015-03/AMD1:2019-12(en-fr)
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IEC 60898-1
Edition 2.0 2019-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Electrical accessories – Circuit-breakers for overcurrent protection
for household and similar installations –
Part 1: Circuit-breakers for a.c. operation
Petit appareillage électrique – Disjoncteurs pour la protection
contre les surintensités pour installations domestiques et analogues –
Partie 1: Disjoncteurs pour le fonctionnement en courant alternatif
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-7634-1
– 2 – IEC 60898-1:2015/AMD1:2019
© IEC 2019
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/1156/FDIS 23E/1157/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 website 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• withdrawn,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.
___________
FOREWORD
Add the following paragraph after the sentence "This publication has been drafted in
accordance with the ISO/IEC Directives, Part 2":
The following differing practices of a less permanent nature exist in the countries indicated
below.
– Annex J, Clause J.1: Upper limit of current for use of screwless terminals is 16 A (CZ, DK,
NL and CH; upper limit of current for use of screwless terminals is 30 A (Japan).
– J.3.3: Only universal screwless-type terminals are accepted (AT, BE, CN, DK, DE, ES, FR,
IT, PT, SE and CH).
1 Scope
Replace in the third paragraph "for not being maintained" with "do not require maintenance".
Add, at the end of the fourth paragraph, after "pollution degree 2", the following text "and
overvoltage category III".
Add, after the second paragraph, the following note:
NOTE 1 Additional requirements are necessary for circuit-breakers used in locations having more severe
overvoltage conditions.
© IEC 2019
Add, after the fourth paragraph, the following text:
For an environment with a higher pollution degree, enclosures giving the appropriate degree
of protection are used.
Add, after the tenth paragraph, the following text:
This document does not apply to circuit-breakers for DC operation that are covered by
IEC 60898-3.
Delete paragraph 13: "For an environment […] should be used.".
Renumber the existing note in paragraph 14 "NOTE 2".
2 Normative references
Add the following reference to Clause 2:
IEC 60664-3, Insulation coordination for equipment within low-voltage systems – Part 3: Use
of coating, potting or moulding for protection against pollution
3 Terms and definitions
3.2.13
Replace "operation sequence" by "operating sequence".
Insert the following new terms and definitions:
3.2.15
type test
test of one or more devices made to a certain design to show that the design meets certain
requirements
[SOURCE: IEC 60050-411:1996, 411-53-01, modified – "machines" and "specifications" have
been replaced by "devices" and "requirements", respectively.]
3.2.16
routine test
test to which each individual device is subjected during or after manufacture to ascertain
whether it complies with certain criteria
[SOURCE: IEC 60050-411:1996, 411-53-02, modified – "machine" has been replaced with
"device".]
3.5.14.2
Replace the source text by the following:
[SOURCE: IEC 60947-2:2016, 2.17.1, modified – "in series" has been added.]
3.5.16
Replace, in the definition, "to trip" by "to operate".
– 4 – IEC 60898-1:2015/AMD1:2019
© IEC 2019
5.1 List of characteristics
Replace list items:
– range of instantaneous tripping current (see 4.5 and 5.3.5);
– I²t classification (see 4.6).
with the following:
– range of instantaneous tripping current (see 4.6 and 5.3.5);
– I²t classification (see 4.7).
5.2.4 Rated short-circuit capacity (I )
cn
Replace the reference to "Table 17" in the note, by "Table 18".
5.3.1 Preferred values of rated voltage
Table 1 – Preferred values of rated voltage
Delete NOTE 1 in Table 1 and renumber the other notes accordingly.
5.3.6 Standard values of rated impulse withstand voltage (U )
imp
Replace Table 3 by the following new Table 3:
Table 3 – Rated impulse withstand voltage as a function
of the nominal voltage of the installation
Nominal voltage of the installation
Rated impulse withstand voltage
Single-phase system with mid-
U
Three-phase systems
imp
point earthed
kV
V
V
a b
2,5 120/240
a c
4 230/400 120/240, 240
NOTE 1 For test voltages to check the insulation, see Table 14.
NOTE 2 For test voltages to check the isolation distance across open contacts, see Table 15.
a
The values 3 kV and 5 kV, respectively, are used for verifying the isolating distances across open contacts at
the altitude of 2 000 m (see Table 15).
b
For installation practice in Japan.
c
For installation practice in North American countries.
© IEC 2019
6 Marking and other product information
Add the following new paragraph after NOTE 3:
For rail-mounted circuit-breakers, appropriate rail(s) shall be indicated in the manufacturer's
documentation.
8 Requirements for construction and operation
8.1.3 Clearances and creepage distances (see Annex B)
Replace 8.1.3 by the following new 8.1.3:
8.1.3 Clearances, creepage distances and solid insulation
The minimum required clearances and creepage distances are given in Table 4 which is
based on the circuit-breaker being designed for operating in an environment with pollution
degree 2.
Parts of PCBs connected to live parts and protected against pollution by the use of a type 2
protection according to IEC 60664-3 are exempted from this verification.
The insulating materials are classified into material groups on the basis of their comparative
tracking index (CTI) according to IEC 60664-1.
NOTE 1 The comparative tracking index (CTI) is declared by the manufacturer on the basis of tests carried out on
the insulating material.
NOTE 2 Information on the requirements for design of solid insulation is provided in IEC 60664-1.
For clearances on printed wiring material, footnote 3 in Table F.2 of IEC 60664-1:2007
applies. For creepage distances on printed wiring material, the distances from Table F.4 of
IEC 60664-1:2007 for pollution degree 1 can be applied only if protected with a coating
meeting IEC 60664-3 requirements and tests.
– 6 – IEC 60898-1:2015/AMD1:2019
© IEC 2019
Table 4 – Minimum clearances and creepage distances
e, f
Minimum clearances Minimum creepage distances
mm mm
h
Group IIIa Group II Group I
d
(175 V ≤ CTI < (400 V ≤ CTI < (600 V ≤ CTI)
d d
400 V) 600 V)
e
Rated voltage Working voltage
V V
U
imp
2,5 kV 4 kV 4 kV
Description/item
120/ 120/ 230/ > 25 120 250 400 > 25 120 250 400 > 25 120 250 400
i i i
240 240 400 ≤ 50 ≤ 50 ≤ 50
120 240 230
1. Between live parts
which are
separated when
2,0 4,0 4,0 1,2 2,0 4,0 4,0 0,9 2,0 4,0 4,0 0,6 2,0 4,0 4,0
the main contacts
are in the open
a, j
position
2. Between live parts
of different 1,5 3,0 3,0 1,2 1,5 3,0 4,0 0,9 1,5 3,0 3,0 0,6 1,5 3,0 3,0
a
polarity
3. Between circuits
supplied from
different sources,
3,0 6,0 8,0 3,0 6,0 8,0 3,0 6,0 8,0 3,0 6,0 8,0
one of which
being PELV or
g
SELV
Rated voltage
V
120/ 230/ 120/ 230/ 120/ 230/
240 400 240 400 240 400
4. Between live parts
and
– accessible
surfaces of
operating
means
– screws or other
means for fixing
1,5 3,0 3,0 1,5 4,0 1,5 3,0 1,5 3,0
covers which
have to be
removed when
mounting the
circuit-breaker
– surface on
which the
circuit-breaker
b
is mounted
– screws or other
means for fixing
the circuit-
breaker
– metal covers or
b
boxes
– other
accessible
c
metal parts
– metal frames
supporting
flush-type
circuit-breakers
© IEC 2019
Care should be taken to provide adequate clearances and creepage distances between live parts of different
polarity of circuit-breakers, for example of the plug-in type mounted close to one another. If the surfaces adjacent
to the circuit-breaker do not meet the clearance and creepa
...