EN 60898-1:2019/A1:2024
(Amendment)Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 1: Circuit-breakers for a.c. operation
Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 1: Circuit-breakers for a.c. operation
This part of IEC 60898 applies to a.c. air-break circuit-breakers for operation at 50 Hz, 60 Hz or 50/60 Hz, having a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 25 000 A.
Elektrisches Installationsmaterial - Leitungsschutzschalter für Hausinstallationen und ähnliche Zwecke - Teil 1: Leitungsschutzschalter für Wechselstrom (AC)
Petit appareillage électrique - Disjoncteurs pour la protection contre les surintensités pour installations domestiques et analogues - Partie 1: Disjoncteurs pour le fonctionnement en courant alternatif
Le contenu du corrigendum de mars 2020 a été pris en considération dans cet exemplaire.
Električni pribor - Odklopniki za nadtokovno zaščito za gospodinjske in podobne inštalacije - 1. del: Odklopniki za izmenični tok - Dopolnilo A1 (IEC 60898-1:2015/AMD1:2019)
General Information
Relations
Overview
EN 60898-1:2019/A1:2024 (CLC adoption of IEC 60898-1:2015/AMD1:2019) is a European amendment for circuit‑breakers for overcurrent protection used in household and similar installations. It applies to a.c. air‑break circuit‑breakers for 50 Hz, 60 Hz or 50/60 Hz systems with a rated voltage up to 440 V (between phases), rated current up to 125 A, and rated short‑circuit capacity up to 25 000 A. The amendment updates technical requirements, tests and normative references and was approved by CENELEC in April 2024.
Key topics and requirements
- Scope and exclusions: Covers AC operation only; DC circuit‑breakers are excluded (IEC 60898‑3 covers DC).
- Electrical ratings: Limits on rated voltage, rated current and rated short‑circuit capacity define the product class covered by the standard.
- Environmental design: Specifies design for pollution degree 2 and overvoltage category III; notes additional requirements for harsher environments.
- Insulation and clearance: Updated requirements for clearances, creepage distances and solid insulation (see Table 4 in the standard). References IEC 60664‑3 for protection by coating, potting or moulding.
- Type and routine tests: Introduces and defines type test and routine test requirements to verify design and individual device compliance.
- Marking and documentation: Adds manufacturer information requirements (e.g., rail indication for rail‑mounted devices).
- Construction and mounting: Clarifies requirements for terminals (including screwless types), retention of plug‑in devices and component mounting.
- EMC considerations: States that circuit‑breakers are not sensitive to normal electromagnetic disturbances (no immunity tests required) and addresses emissions during switching operations.
- Normative references: Adds IEC 60664‑3 and other cross‑references to harmonize insulation and pollution protection rules.
Practical applications
- Product design and development of domestic/consumer circuit‑breakers
- Test laboratories performing type and routine testing for certification
- Manufacturers preparing technical documentation, markings and conformity evidence
- Electrical specifiers and procurement teams selecting circuit‑breakers for residential and light commercial installations
- Regulatory and compliance teams ensuring alignment with CENELEC/CENELEC implementation dates
Who uses this standard
- Circuit‑breaker manufacturers and component designers
- Test and certification bodies (CE/EN conformity)
- Electrical engineers, installers and consulting firms
- Standards committees and national electrotechnical bodies
Related standards
- IEC 60898‑1 (base international standard)
- IEC 60898‑3 (DC circuit‑breakers)
- IEC 60664‑1 / IEC 60664‑3 (insulation coordination; use of coatings/potting for pollution protection)
Keywords: EN 60898‑1:2019/A1:2024, circuit‑breakers, overcurrent protection, household installations, AC operation, clearances, creepage distances, IEC 60664‑3, type test, routine test, CENELEC.
Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2024
Električni pribor - Odklopniki za nadtokovno zaščito za gospodinjske in podobne
inštalacije - 1. del: Odklopniki za izmenični tok - Dopolnilo A1 (IEC 60898-
1:2015/AMD1:2019)
Electrical accessories - Circuit-breakers for overcurrent protection for household and
similar installations - Part 1: Circuit-breakers for a.c. operation (IEC 60898-
1:2015/AMD1:2019)
Elektrisches Installationsmaterial - Leitungsschutzschalter für Hausinstallationen und
ähnliche Zwecke - Teil 1: Leitungsschutzschalter für Wechselstrom (AC)
Petit appareillage électrique - Disjoncteurs pour la protection contre les surintensités
pour installations domestiques et analogues - Partie 1: Disjoncteurs pour le
fonctionnement en courant alternatif
Ta slovenski standard je istoveten z: EN 60898-1:2019/A1:2024
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 60898-1:2019/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM July 2024
ICS 29.120.50
English Version
Electrical accessories - Circuit-breakers for overcurrent
protection for household and similar installations - Part 1: Circuit-
breakers for a.c. operation
(IEC 60898-1:2015/AMD1:2019)
Petit appareillage électrique - Disjoncteurs pour la Elektrisches Installationsmaterial - Leitungsschutzschalter
protection contre les surintensités pour installations für Hausinstallationen und ähnliche Zwecke - Teil 1:
domestiques et analogues - Partie 1: Disjoncteurs pour le Leitungsschutzschalter für Wechselstrom (AC)
fonctionnement en courant alternatif (IEC 60898-1:2015/AMD1:2019)
(IEC 60898-1:2015/AMD1:2019)
This amendment A1 modifies the European Standard EN 60898-1:2019; it was approved by CENELEC on 2024-04-22. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60898-1:2019/A1:2024 E
European foreword
This document (EN 60898-1:2019/A1:2024) consists of the text of document
IEC 60898-1:2015/AMD1:2019, prepared by IEC/SC 23E, “Circuitbreakers and similar equipment for
household use”, of IEC/TC 23 " Electrical accessories".
The following dates are fixed:
• latest date by which this document has to be (dop) 2025-04-22
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) 2027-04-22
conflicting with this document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
For the relationship with EU Legislation, see informative Annex ZZ, which is an integral part of
EN 60898-1:2019/A11:2024.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website
Endorsement notice
The text of the International Standard IEC 60898-1:2015/AMD1:2019 was approved by CENELEC as a
European Standard without any modification.
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 60898-1:2015/AMD1:2019 – 3 –
© 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 60898-1:2015/AMD1:2019 – 5 –
© 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 60898-1:2015/AMD1:2019 – 7 –
© 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 creepage distance requirements, appropriate information will
be provided for installation purposes.
NOTE 1 The values given for 400 V are also valid for 440 V.
NOTE 2 The parts of the neutral path, if any, are considered to be live parts.
a
For auxiliary and control contacts the values are given in the relevant standard.
b
The values are doubled if clearances and creepage distances between live parts of the device and the metallic
screen or the surface on which the circuit-breaker is mounted are not dependent on the design of the circuit-
breaker only, so that they can be reduced when the circuit-breaker is mounted in the most unfavourable
condition.
c
Including a metal foil in contact with the surfaces of insulating material which are accessible after installation for
normal use. The foil is pushed into corners, grooves, etc., by means of a straight unjointed test finger according
to 9.6 (see Figure 8).
d
See IEC 60112.
e
Interpolation is allowed in determining creepage distances corresponding to voltage values intermediate to those
listed as working voltage. When interpolating, linear interpolation shall be used and values shall be rounded to
the same number of digits as the values taken from the tables. For determination of creepage distances, see
Annex B.
f
Creepage distances cannot be less than the associated clearances.
g
To cover all different voltages including ELV in an auxiliary contact.
h
For material group IIIb (100 V ≤ CTI < 175 V) the values for material group IIIa multiplied by 1,6 apply.
i
For working voltages up to and including 25 V, reference may be made to IEC 60664-1.
j
The clearance and creepage distances between the metal parts within the arc chamber may be less than 1 mm,
provided that the sum of distances is greater than specified in item 1 of Table 4.
8.1.3.1 Clearances
Compliance as regards item 1 in Table 4 is checked by measurement and by the tests of
9.7.5.4.
The test is carried out with samples not submitted to the humidity treatment described in
9.7.1.
Compliance as regards items 2 and 4 in Table 4 is checked by measurement and, if the
clearances are reduced, by the tests of 9.7.5.2.
The clearances of items 2 and 4 (except for accessible surfaces after installation, see note)
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, compliance as regards
items 2 and 4 is always checked by the test of 9.7.5.2.
NOTE An accessible surface after installation means any surface accessible by the user when the circuit-breaker
is installed according to the manufacturer's instructions. The test finger can be applied to determine whether a
surface is accessible or not.
Compliance as regards item 3 in Table 4 is checked by measurement.
8.1.3.2 Creepage distances
Compliance as regards items 1, 2, 3 and 4 of Table 4 is checked by measurement.
NOTE All measurements required in 8.1.3 are carried out in Test sequence A on one sample. Tests according to
9.7.2 to 9.7.5 are carried out in Test sequence B on three samples.
8.1.3.3 Solid insulation
Compliance is checked by the tests according to 9.7.2, 9.7.3, 9.7.4 and 9.7.5, as applicable.
– 8 – IEC 60898-1:2015/AMD1:2019
© IEC 2019
8.1.4.4
Replace in the last paragraph "parts of electronic devices" by "electronic components,
including printed circuit board".
Add at the end of the subclause "Compliance is checked by inspection in accordance with the
manufacturer's declaration.".
8.1.5.1
Replace in the last paragraph "in the standard" by "in this document".
8.1.5.12
Replace "of the tapping screw type" by "the thread cutting type".
Add at the end of the subclause "Compliance is checked by inspection.".
8.1.7.1 General
Replace "the holding in position of which" by "the retention of which".
8.1.7.2 Plug-in type circuit-breakers, the holding in position of which does not depend
solely on their plug-in connection(s)
Replace in the title "the holding in position of which" by "the retention of which".
8.1.7.3 Plug-in type circuit-breakers, the holding in position of which depends solely
on their plug-in connection(s)
Replace in the title "the holding in position of which" by "the retention of which".
Add the following new subclauses:
8.14 Electromagnetic immunity
Circuit-breakers for overcurrent protection for household and similar installations are not
sensitive to normal electromagnetic disturbances and therefore no immunity tests are
required.
8.15 Electromagnetic emission
Electromagnetic disturbances can only be generated by circuit-breakers for overcurrent
protection for household and similar installations during occasional switching or automatic
breaking operations. The duration of the disturbances is of the order of milliseconds.
The frequency, the level and the consequences of these emissions are considered as part of
the normal electromagnetic environment of low-voltage installations. Therefore the
requirements for electromagnetic emissions are deemed to be satisfied and no verification is
necessary.
9.2 Test conditions
Add, after the sixth paragraph, the following text:
"The tightening torques to be applied to the terminal screws are two-thirds of those specified
in Table 11."
and delete the same sentence before Table 10.
IEC 60898-1:2015/AMD1:2019 – 9 –
© IEC 2019
9.3 Test of indelibility of marking
Add after the first paragraph:
Alternately the following solvent could be used: n-hexane 95 % (Chemical Abstracts Service
Registry Number CAS RN: 110-54-3).
NOTE n-hexane 95 % (Chemical Abstracts Service Registry Number CAS RN: 110-54-3) is available from a
variety of chemical suppliers as a high-pressure liquid chromatography (HPLC) solvent.
Only the mandatory markings of Clause 6 are subjected to this test.
Add in the second paragraph the word "laser" after "moulding,".
9.4 Test of reliability of screws, current-carrying parts and connections
Delete the last two paragraphs of the subclause.
9.5.1
Replace in the second paragraph "These last tests" by "The tests of 9.4 and 9.5".
9.5.2
Replace in the second and third paragraphs "terminal" by "terminals".
9.5.3
Replace in the third paragraph "severed wires" by "severed strands".
Replace the existing 9.7 by the following new 9.7.
9.7 Test of dielectric properties
9.7.1 Resistance to humidity
9.7.1.1 Preparation of the circuit-breaker for test
Parts which can be removed without the aid of a tool are removed and subjected to the
humidity treatment with the main part; spring lids are kept open during this treatment.
Inlet openings, if any, are left open; if knock-outs are provided, one of them is opened.
9.7.1.2 Test conditions
The humidity treatment is carried out in a humidity cabinet containing air with a relative
humidity maintained between 91 % and 95 %.
The temperature of the air in which the sample is placed is maintained within ±1 °C of any
convenient value T between 20 °C and 30 °C.
Before being placed in the humidity cabinet, the sample is brought to a temperature between
T °C and T °C +4 °C.
9.7.1.3 Test procedure
The sample is kept in the cabinet for 48 h.
– 10 – IEC 60898-1:2015/AMD1:2019
© IEC 2019
NOTE A relative humidity between 91 % and 95 % can be obtained by placing in the humidity cabinet a saturated
solution of sodium sulphate (Na SO ) or potassium nitrate (KNO ) in water having a sufficiently large contact
2 4 3
surface with the air.
In order to achieve the specified conditions within the cabinet, it is necessary to ensure
constant circulation of the air within and, in general, to use a cabinet which is thermally
insulated.
9.7.1.4 Condition of the circuit-breaker after the test
After this treatment, the sample shall show no damage within the meaning of this document
and shall withstand the tests of 9.7.2, 9.7.3, 9.7.4, and 9.7.5.2.
9.7.2 Insulation resistance of the main circuit
The circuit-breaker having been treated as specified in 9.7.1 is then removed from the
cabinet.
After an interval between 30 min and 60 min following this treatment, the insulation resistance
+100
is measured 5 s after application of a DC voltage of approximately V, in the following
order:
a) with the circuit-breaker in the open position, between each pair of the terminals which are
electrically connected together when the circuit-breaker is in the closed position, in turn on
each pole;
b) with the circuit-breaker in the closed position, in turn between each pole and the other
poles connected together, electronic components connected between current paths being
disconnected for the test;
c) with the circuit-breaker in the closed position, between all poles connected together and
the frame, including a metal foil or part in contact with the outer surface of the housing of
insulating material but with the terminal areas kept completely free to avoid flashover
between terminals and the metal foil;
d) for circuit-breakers with a metal enclosure having an internal lining of insulating material,
between the frame and a metal foil in contact with the inner surface of the lining of
insulating material including bushings and similar devices.
The measurements in items a), b) and c) are carried out after having connected all auxiliary
circuits to the frame.
The term "frame" includes:
– all accessible metal parts and a metal foil in contact with the surfaces of insulating
material which are accessible after installation as for normal use;
– the surface on which the base of the circuit-breaker is mounted, covered, if necessary,
with a metal foil;
– screws and other devices for fixing the base to its support;
– screws for fixing covers which have to be removed when mounting the circuit-breaker;
– metal parts of operating means referred to in 8.2.
If the circuit-breaker is provided with a terminal intended for the interconnection of protective
conductors, this terminal is connected to the frame.
For the measurements according to items b), c) and d), the metal foil is applied in such a way
that the sealing compound, if any, is effectively tested.
The insulation resistance shall be not less than
IEC 60898-1:2015/AMD1:2019 – 11 –
© IEC 2019
– 2 MΩ for the measurements according to items a) and b);
– 5 MΩ for the other measurements.
9.7.3 Dielectric strength of the main circuit
After the circuit-breaker has passed the tests of 9.7.2, the test voltage specified is applied for
1 min between the parts indicated in 9.7.2, with electronic components, if any, being
disconnected for the test.
The test voltage shall have a practically sinusoidal waveform, and a frequency between 45 Hz
and 65 Hz.
The source of the test voltage shall be capable of supplying a short-circuit current of at least
0,2 A.
No overcurrent tripping device of the transformer shall operate when the current in the output
circuit is lower than 100 mA.
The values of the test voltage shall be as follows:
– 2 000 V for items a) to c) of 9.7.2;
– 2 500 V for item d) of 9.7.2.
Initially, not more than half the voltage specified in the list above is applied, then it is raised to
the full value within 5 s.
No flashover or breakdown shall occur during the test.
Glow discharges without drop in the voltage are neglected.
9.7.4 Insulation resistance and dielectric strength of auxiliary circuits
Insulation resistance and dielectric strength shall be verified according to the following a), b)
and c).
a) The measurement of the insulation resistance and the dielectric strength tests for the
auxiliary circuits are carried out immediately after the measurement of the insulation
resistance and the dielectric strength tests for the main circuit, under the conditions given
in b) and c) below.
Where electronic components connected to the main circuit in normal service are used,
the temporary connections for test shall be made so that, during the tests, there is no
voltage between the incoming and outgoing sides of the components.
b) The measurements of the insulation resistance are carried out:
– between the auxiliary circuits connected to each other and to the frame;
– between each part of an auxiliary circuit which can be separated from the other parts
in normal service and all the other parts connected together.
+100
For both tests listed under b), a test voltage of 500 V is applied. After this voltage has
been applied for 1 min the insulation resistance shall be not less than 2 MΩ.
c) A substantially sinusoidal voltage at rated frequency is applied for 1 min between the parts
listed under b).
The voltage values to be applied are specified in Table 13.
– 12 – IEC 60898-1:2015/AMD1:2019
© IEC 2019
Table 13 – Test voltage of auxiliary circuits
Rated voltage of Test voltage
auxiliary circuits
(AC or DC)
V V
Greater than Up to and including
0 30 600
30 50 1 000
50 110 1 500
110 250 2 000
250 500 2 500
At the beginning of the test the voltage shall not exceed half the value specified. It is then
increased steadily to the full value within 5 s.
During the test, there shall be no flashover or perforation.
NOTE 1 Discharges which do not correspond to a voltage drop are disregarded.
NOTE 2 In the case of circuit-breakers in which the auxiliary circuit is not accessible for verification of the
requirements given in b), the tests can be made on samples specially prepared by the manufacturer or according to
the manufacturer's instructions.
9.7.5 Verification of impulse withstand voltages (across clearances and across solid
insulation) and of leakage current across open contacts
9.7.5.1 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 impu
...
Frequently Asked Questions
EN 60898-1:2019/A1:2024 is a amendment published by CLC. Its full title is "Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 1: Circuit-breakers for a.c. operation". This standard covers: This part of IEC 60898 applies to a.c. air-break circuit-breakers for operation at 50 Hz, 60 Hz or 50/60 Hz, having a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 25 000 A.
This part of IEC 60898 applies to a.c. air-break circuit-breakers for operation at 50 Hz, 60 Hz or 50/60 Hz, having a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 25 000 A.
EN 60898-1:2019/A1:2024 is classified under the following ICS (International Classification for Standards) categories: 29.120.50 - Fuses and other overcurrent protection devices. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 60898-1:2019/A1:2024 has the following relationships with other standards: It is inter standard links to EN 60898-1:2019, EN 60898-1:2019/A11:2024. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 60898-1:2019/A1:2024 is associated with the following European legislation: EU Directives/Regulations: 2014/35/EU; Standardization Mandates: M/511. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
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