SIST EN IEC 60898-3:2025
(Main)Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 3: Circuit-breakers for DC operation (IEC 60898-3:2019)
Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 3: Circuit-breakers for DC operation (IEC 60898-3:2019)
This part of IEC 60898 applies to DC circuit-breakers, having a DC rated voltage not exceeding 440V, a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 10 000 A.
Elektrisches Installationsmaterial - Leitungsschutzschalter für Hausinstallationen und ähnliche Zwecke - Teil 3: Leitungsschutzschalter für Gleichstrom (DC) (IEC 60898-3:2019)
Petit appareillage électrique - disjoncteurs pour la protection contre les surintensités pour installations domestiques et analogues - Partie 3: Disjoncteurs pour le fonctionnement en courant continu (IEC 60898-3:2019)
IEC 60898-3:2019 La présente partie de l’IEC 60898 s'applique aux disjoncteurs à courant continu ayant une tension assignée en courant continu ne dépassant pas 440 V, un courant assigné ne dépassant pas 125 A et un pouvoir de coupure assigné ne dépassant pas 10 000 A.
Ces disjoncteurs sont destinés à la protection contre les surintensités des installations de câblage des bâtiments et autres applications analogues; ils sont conçus pour être utilisés par des personnes non averties et pour ne pas exiger de maintenance.
La présente version bilingue (2023-07) correspond à la version anglaise monolingue publiée en 2019-04.
La version française de cette norme n'a pas été soumise au vote.
Električni pribor - Odklopniki za nadtokovno zaščito za gospodinjske in podobne inštalacije - 3. del: Odklopniki za enosmerni tok (IEC 60898-3:2019)
Ta del standarda IEC 60898 se uporablja za enosmerne odklopnike z največjo nazivno enosmerno napetostjo 440 V, največjim nazivnim tokom 125 A in največjo nazivno kratkostično zmogljivostjo 10.000 A. Ti odklopniki so namenjeni za nadtokovno zaščito inštalacij stavb in podobnih inštalacij ter so zasnovani tako, da jih lahko uporabljajo nepoučene osebe in jih ni treba vzdrževati.
Odklopniki so namenjeni uporabi v okolju s stopnjo onesnaženja 2.
Primerni so za izolacijo.
Odklopniki v skladu s tem dokumentom so primerni za uporabo v sistemih TN in TT ter pod posebnimi pogoji v sistemih IT.
Ta dokument se uporablja tudi za odklopnike z več kot enim nazivnim tokom, če sredstvo za spreminjanje nazivnega toka ni na voljo med običajnim delovanjem in nazivnega toka ni mogoče spremeniti brez uporabe orodja.
Ta dokument se ne uporablja za:
– odklopnike, namenjene zaščiti motorjev;
– odklopnike, katerih nastavljeni tok je mogoče prilagoditi s sredstvi, ki so na voljo uporabniku.
Pri odklopnikih, katerih stopnja zaščite je višja od IP20 v skladu s standardom IEC 60529 in se uporabljajo na območjih, kjer prevladujejo zahtevne okoljske razmere (npr. prekomerna vlažnost, toplota ali hlad, nabiranje prahu), ter na nevarnih območjih (npr. kjer lahko pride do eksplozij), so morda potrebne posebne konstrukcije.
Za okolje z višjo stopnjo onesnaženja se uporabljajo ohišja, ki zagotavljajo ustrezno stopnjo zaščite.
Ta dokument se ne uporablja za odklopnike za izmenični tok, zajete v standardu IEC 60898-1.
Ta dokument se ne uporablja za odklopnike za izmenični in enosmerni tok, zajete v standardu IEC 60898-2.
Odklopniki v skladu s tem dokumentom so zelo odporni proti neželenemu odklopu, ne glede na to, ali ga povzročijo vklopni tokovi zaradi elektronske obremenitve ali preklapljanje v tokokrogu.
OPOMBA: Odklopnike, ki spadajo na področje uporabe tega dokumenta, je mogoče uporabljati tudi za zaščito pred električnim udarom v primeru napake, kar je odvisno od njihovih odklopnih lastnosti in lastnosti inštalacije. Merilo za uporabo za takšne namene je obravnavano v pravilih namestitve. Ta dokument vsebuje vse zahteve, ki so nujne za zagotovitev skladnosti z operativnimi lastnostmi, ki jih za te naprave zahtevajo tipski preskusi.
Vsebuje tudi podrobnosti glede preskusnih zahtev in metod preskušanja, ki so nujne za zagotovitev ponovljivosti rezultatov preskusov.
Smernice o koordiniranju med odklopnikom in drugo napravo za zaščito pred kratkim stikom (SCPD) v pogojih kratkega stika so podane v dodatku C. Rutinski preskusi, namenjeni odkrivanju nesprejemljivih odstopanj v materialu ali izdelavi v zvezi z varnostjo, so podani v dodatku G.
General Information
Relations
Overview
EN IEC 60898-3:2025 (adoption of IEC 60898-3:2019) specifies requirements for DC circuit‑breakers used for overcurrent protection in household and similar installations. The standard applies to circuit‑breakers with a DC rated voltage up to 440 V, a rated current up to 125 A, and a rated short‑circuit capacity up to 10 000 A. It is a Part 3 extension of the IEC 60898 series focused on circuit‑breakers for DC operation and is published by CENELEC/CLC as a European standard.
Key topics and technical requirements
EN IEC 60898-3:2025 covers design, performance and test requirements, including:
- Scope and classification: device types, pole counts, mounting and terminal types.
- Rated characteristics: rated DC voltage (≤ 440 V), rated current (≤ 125 A), rated short‑circuit capacity (≤ 10 000 A) and making/breaking capacities.
- Construction and safety: mechanical design, clearances and creepage distances, protection against electric shock, terminal requirements and non‑interchangeability.
- Electrical performance: tripping characteristics, conventional thermal and magnetic behaviour, performance at low DC currents and inrush conditions.
- Thermal and dielectric: temperature rise limits, dielectric strength, insulation coordination and impulse withstand.
- Short‑circuit and endurance tests: type test sequences, measurement of I²t and peak currents, mechanical/electrical endurance and verification after tests.
- Marking and documentation: product marking, rated values and installation information.
- Environmental and installation conditions: ambient temperature ranges, altitude, pollution degree and humidity resistance.
(These topics reflect the standard’s table of contents on tests, requirements and characteristics.)
Applications and who should use it
EN IEC 60898-3:2025 is essential for stakeholders involved with DC protection in residential, commercial and similar settings, including:
- Circuit‑breaker manufacturers designing products for DC systems (photovoltaics, battery storage, DC microgrids, EV charging interfaces).
- Test laboratories and certification bodies performing type and routine tests to demonstrate compliance.
- Electrical engineers and specifiers selecting protective devices for DC installations.
- Installers, inspectors and compliance officers ensuring safe installation and conformity with European requirements.
Related standards
- IEC/EN 60898 series (Part 1, Part 2) - general requirements for overcurrent protective devices.
- Other referenced IEC/EN standards on insulation, dielectric testing and installation practices (see EN IEC 60898-3 bibliographic notes).
EN IEC 60898-3:2025 provides the technical framework to ensure safe, reliable DC overcurrent protection for household and similar installations - a key reference for product design, testing and regulatory compliance.
Frequently Asked Questions
SIST EN IEC 60898-3:2025 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations - Part 3: Circuit-breakers for DC operation (IEC 60898-3:2019)". This standard covers: This part of IEC 60898 applies to DC circuit-breakers, having a DC rated voltage not exceeding 440V, a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 10 000 A.
This part of IEC 60898 applies to DC circuit-breakers, having a DC rated voltage not exceeding 440V, a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 10 000 A.
SIST EN IEC 60898-3:2025 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.
SIST EN IEC 60898-3:2025 has the following relationships with other standards: It is inter standard links to SIST EN IEC 60898-3:2025/A11:2025, SIST EN IEC 60898-3:2025/A1:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 60898-3:2025 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.
You can purchase SIST EN IEC 60898-3:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2025
Električni pribor - Odklopniki za nadtokovno zaščito za gospodinjske in podobne
inštalacije - 3. del: Odklopniki za enosmerni tok (IEC 60898-3:2019)
Electrical accessories - Circuit-breakers for overcurrent protection for household and
similar installations - Part 3: Circuit-breakers for DC operation (IEC 60898-3:2019)
Elektrisches Installationsmaterial - Leitungsschutzschalter für Hausinstallationen und
ähnliche Zwecke - Teil 3: Leitungsschutzschalter für Gleichstrom (DC) (IEC 60898-
3:2019)
Petit appareillage électrique - disjoncteurs pour la protection contre les surintensités pour
installations domestiques et analogues - Partie 3: Disjoncteurs pour le fonctionnement
en courant continu (IEC 60898-3:2019)
Ta slovenski standard je istoveten z: EN IEC 60898-3:2025
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 IEC 60898-3
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2025
ICS 29.120.50
English Version
Electrical accessories - Circuit-breakers for overcurrent
protection for household and similar installations - Part 3: Circuit-
breakers for DC operation
(IEC 60898-3:2019)
Petit appareillage électrique - disjoncteurs pour la protection Elektrisches Installationsmaterial - Leitungsschutzschalter
contre les surintensités pour installations domestiques et für Hausinstallationen und ähnliche Zwecke - Teil 3:
analogues - Partie 3: Disjoncteurs pour le fonctionnement Leitungsschutzschalter für Gleichstrom (DC)
en courant continu (IEC 60898-3:2019)
(IEC 60898-3:2019)
This European Standard was approved by CENELEC on 2025-02-03. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard 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 European Standard 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
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60898-3:2025 E
European foreword
This document (EN IEC 60898-3:2025) consists of the text of document IEC 60898-3:2019, prepared
by SC 23E "Circuit-breakers 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) 2026-03-31
implemented at national level by publication of an
identical national standard or by endorsement
• latest date by which the national standards (dow) 2028-03-31
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 is read in conjunction with EN IEC 60898-3:2025/A1:2025 and
This document has been prepared under a standardisation 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
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 60898-3:2019 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60038 NOTE Approved as EN 60038
IEC 60060-1:2010 NOTE Approved as EN 60060-1:2010 (not modified)
IEC 60112 NOTE Approved as EN IEC 60112
IEC 60364 series NOTE Approved as HD 60364 series
IEC 60364-4-41:2005 NOTE Approved as HD 60364-4-41:2017 +A11:2017
IEC 60664-3 NOTE Approved as EN 60664-3
IEC 60898-1:2015 NOTE Approved as EN 60898-1:2019 +A11:2024
IEC 60898-2:2016 NOTE Approved as EN 60898-2:2021
IEC 60998-1:2002 NOTE Approved as EN 60998-1:2004
IEC 60998-2-2:2002 NOTE Approved as EN 60998-2-2:2004
IEC 60999 series NOTE Approved as EN 60999 series
ISO 2039-2:1987 NOTE Approved as EN ISO 2039-2:1999 (not modified)
IEC 60898-3 ®
Edition 1.0 2019-04
INTERNATIONAL
STANDARD
Electrical accessories – Circuit-breakers for overcurrent protection for
household and similar installations –
Part 3: Circuit-breakers for DC operation
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.50 ISBN 978-2-8322-6676-2
– 2 – IEC 60898-3:2019 © IEC 2019
CONTENTS
FOREWORD . 9
1 Scope . 11
2 Normative references . 12
3 Terms and definitions . 12
3.1 Devices . 13
3.2 General terms . 13
3.3 Constructional elements . 15
3.4 Conditions of operation . 18
3.5 Characteristic quantities . 19
3.6 Definitions related to insulation co-ordination . 23
4 Classification . 25
4.1 General . 25
4.2 According to the number of poles . 25
4.3 According to the current direction through the poles. 25
4.4 According to the protection against external influences . 26
4.5 According to the method of mounting . 26
4.6 According to the methods of connection . 26
4.6.1 According to the fixation system . 26
4.6.2 According to the type of terminals . 26
4.7 According to the instantaneous tripping current (see 3.5.18) . 26
5 Characteristics of circuit-breakers. 26
5.1 List of characteristics . 26
5.2 Rated quantities . 27
5.2.1 Rated voltages . 27
5.2.2 Rated direct current (I ) . 27
n
5.2.3 Rated short-circuit capacity (I ) . 27
cn
5.2.4 Rated making and breaking capacity of an individual pole (I ) . 27
cn1
5.3 Standard and preferred values . 28
5.3.1 Preferred values of rated voltage . 28
5.3.2 Preferred values of rated current . 28
5.3.3 Values of rated short-circuit capacity . 28
5.3.4 Standard ranges of instantaneous tripping . 28
5.3.5 Standard value of rated impulse withstand voltage (U ) . 28
imp
6 Marking and other product information . 29
7 Standard conditions for operation in service . 30
7.1 General . 30
7.2 Ambient air temperature range . 30
7.3 Altitude . 31
7.4 Atmospheric conditions . 31
7.5 Conditions of installation . 31
7.6 Pollution degree . 31
8 Requirements for construction and operation . 31
8.1 Mechanical design . 31
8.1.1 General . 31
8.1.2 Mechanism . 31
8.1.3 Clearances and creepage distances (see Annex A) . 33
IEC 60898-3:2019 © IEC 2019 – 3 –
8.1.4 Screws, current-carrying parts and connections . 35
8.1.5 Terminals for external conductors . 36
8.1.6 Non-interchangeability . 38
8.1.7 Mechanical mounting of plug-in type circuit-breakers . 39
8.2 Protection against electric shock . 39
8.3 Dielectric properties and isolating capability . 39
8.3.1 General . 39
8.3.2 Dielectric properties . 40
8.3.3 Isolating capability . 40
8.3.4 Dielectric strength at rated impulse withstand voltage (U ) . 40
imp
8.4 Temperature rise . 40
8.4.1 Temperature rise limits . 40
8.4.2 Ambient air temperature . 40
8.5 Uninterrupted duty . 41
8.6 Automatic operation . 41
8.6.1 Standard time-current zone . 41
8.6.2 Conventional quantities . 42
8.6.3 Tripping characteristic . 42
8.7 Mechanical and electrical endurance . 42
8.8 Performance at short-circuit currents and at small DC currents . 43
8.9 Resistance to mechanical shock and impact . 43
8.10 Resistance to heat . 43
8.11 Resistance to abnormal heat and to fire . 43
8.12 Resistance to rusting . 43
8.13 Behaviour in case of making inrush current . 43
8.14 Power loss . 43
8.15 Requirement of small DC currents. 44
9 Tests . 44
9.1 Type tests and test sequences . 44
9.2 Test conditions . 45
9.3 Test of indelibility of marking . 46
9.4 Test of reliability of screws, current-carrying parts and connections . 46
9.5 Tests of reliability of screw-type terminals for external copper conductors. 47
9.6 Test of protection against electric shock . 49
9.7 Test of dielectric properties . 49
9.7.1 Resistance to humidity . 49
9.7.2 Insulation resistance of the main circuit . 50
9.7.3 Dielectric strength of the main circuit . 51
9.7.4 Insulation resistance and dielectric strength of auxiliary circuits. 51
9.7.5 Verification of impulse withstand voltages (across clearances and
across solid insulation) and of leakage current across open contacts . 52
9.8 Test of temperature rise and measurement of power loss . 55
9.8.1 Ambient air temperature . 55
9.8.2 Test procedure . 55
9.8.3 Measurement of the temperature of parts . 55
9.8.4 Temperature rise of a part . 55
9.8.5 Measurement of power loss . 55
9.9 28-day test . 56
9.10 Test of tripping characteristic . 56
– 4 – IEC 60898-3:2019 © IEC 2019
9.10.1 General . 56
9.10.2 Test of time-current characteristic . 56
9.10.3 Test of instantaneous tripping, of correct opening of the contacts and of
the trip-free function . 56
9.10.4 Test of effect of single-pole loading on the tripping characteristic of
multipole circuit-breakers . 57
9.10.5 Test of effect of ambient temperature on the tripping characteristic . 58
9.11 Verification of mechanical and electrical endurance . 58
9.11.1 General test conditions . 58
9.11.2 Test procedure . 58
9.11.3 Condition of the circuit-breaker after test . 59
9.12 Short-circuit tests . 59
9.12.1 General . 59
9.12.2 Values of test quantities . 60
9.12.3 Tolerances on test quantities . 60
9.12.4 Test circuit for short-circuit performance . 60
9.12.5 Time constant of the test circuits . 61
9.12.6 Measurement and verification of I t and of the peak current (I ) . 62
p
9.12.7 Calibration of the test circuit . 62
9.12.8 Interpretation of records . 62
9.12.9 Condition of the circuit-breaker for test . 62
9.12.10 Behaviour of the circuit-breaker during short-circuit tests . 64
9.12.11 Test procedure . 64
9.12.12 Verification of the circuit breaker after short circuit tests . 67
9.13 Mechanical stresses . 68
9.13.1 Mechanical shock . 68
9.13.2 Resistance to mechanical stresses and impact . 68
9.14 Test of resistance to heat . 71
9.15 Resistance to abnormal heat and to fire . 72
9.16 Test of resistance to rusting . 73
9.17 Verification of the behaviour in case of making inrush current . 73
9.17.1 General . 73
9.17.2 Values of the test quantities. 73
9.17.3 Limit deviations of the test quantities . 74
9.17.4 Test circuit for the determination of the withstand capacity against
making currents . 74
9.17.5 Testing for determination of the withstand capacity against making
currents . 75
Annex A (normative) Determination of clearances and creepage distances . 87
A.1 General . 87
A.2 Orientation and location of a creepage distance . 87
A.3 Creepage distances where more than one material is used . 87
A.4 Creepage distances split by floating conductive part . 87
A.5 Measurement of creepage distances and clearances . 87
Annex B (normative) Test sequences and number of samples necessary to prove
compliance with this document . 92
B.1 Test sequences . 92
B.2 Number of samples to be submitted for full test procedure and acceptance
criteria . 93
B.3 Number of samples to be submitted for simplified test procedure . 94
IEC 60898-3:2019 © IEC 2019 – 5 –
Annex C (informative) Co-ordination under short-circuit conditions between a circuit-
breaker and another short-circuit protective device (SCPD) associated in the same
circuit . 97
C.1 General . 97
C.2 Purpose . 97
C.3 General requirements for the co-ordination of a circuit-breaker with another
SCPD . 98
C.3.1 General consideration . 98
C.3.2 Take-over current . 98
C.3.3 Behaviour of C in association with another SCPD . 98
C.4 Type and characteristics of the associated SCPD . 98
C.5 Verification of selectivity . 99
C.6 Verification of back-up protection . 99
C.6.1 Determination of the take-over current . 99
C.6.2 Verification of back-up protection . 99
C.6.3 Tests for verification of back-up protection . 100
C.6.4 Results to be obtained . 101
Annex D (informative) Examples of terminals . 105
Annex E (informative) Correspondence between IEC and AWG copper conductors . 108
Annex F (normative) Arrangement for short-circuit test . 109
Annex G (normative) Routine tests . 112
G.1 General . 112
G.2 Tripping tests . 112
G.3 Verification of clearances between open contacts . 112
Annex H (normative) Particular requirements for circuit-breakers with screwless type
terminals for external copper conductors. 113
H.1 Scope . 113
H.2 Normative references . 113
H.3 Terms and definitions . 113
H.4 Classification . 114
H.5 Characteristics of circuit-breakers . 114
H.6 Marking and other product information . 114
H.7 Standard conditions for operation in service . 114
H.8 Requirements for construction and operation . 115
H.8.1 Connection or disconnection of conductors . 115
H.8.2 Dimensions of connectable conductors . 115
H.8.3 Connectable cross-sectional areas . 116
H.8.4 Insertion and disconnection of conductors . 116
H.8.5 Design and construction of terminals . 116
H.8.6 Resistance to ageing . 116
H.9 Tests . 116
H.9.1 Test of reliability of screwless terminals . 116
H.9.2 Tests of reliability of terminals for external conductors: mechanical
strength . 117
H.9.3 Cycling test. 118
H.10 Reference documents . 120
Annex I (normative) Particular requirements for circuit-breakers with flat quick-
connect terminations . 121
I.1 Scope . 121
– 6 – IEC 60898-3:2019 © IEC 2019
I.2 Normative references . 121
I.3 Terms and definitions . 121
I.4 Classification . 122
I.5 Characteristics of circuit-breakers . 122
I.6 Marking and other product information . 122
I.7 Standard conditions for operation in service . 122
I.8 Requirements for construction and operation . 122
I.8.1 Clearances and creepage distances (see Annex A) . 122
I.8.2 Terminals for external conductors . 123
I.9 Tests . 123
I.9.1 Mechanical overload-force . 123
Annex J (normative) Specific requirements for circuit-breakers with screw-type
terminals for external untreated aluminium conductors and with aluminium screw-type
terminals for use with copper or with aluminium conductors . 128
J.1 Scope . 128
J.2 Normative references . 128
J.3 Terms and definitions . 128
J.4 Classification . 129
J.5 Characteristics of circuit-breakers . 129
J.6 Marking and other product information . 129
J.7 Standard conditions for operation in service . 129
J.8 Constructional requirements . 130
J.9 Tests . 130
J.9.1 Test conditions . 132
J.9.2 Current cycling test . 132
J.10 Reference documents . 137
Bibliography . 138
Figure 1 – Thread forming tapping screw . 75
Figure 2 – Thread cutting tapping screw . 75
Figure 3 – Single-pole circuit-breaker or pole of multiple circuit breaker . 75
Figure 4 – Two-pole circuit-breaker with two protected poles . 76
Figure 5 – Three-pole circuit-breaker with two protected poles and non-polarized
protected M pole . 76
Figure 6 – Calibration of the test circuit in case of direct currents . 77
Figure 7 –Mechanical shock test apparatus (see 9.13.1) . 77
Figure 8 – Standard test finger (see 9.6) . 78
Figure 9 – Mechanical impact test apparatus (see 9.13.2) . 79
Figure 10 – Striking element for pendulum for mechanical impact test apparatus (see
9.13.2) . 80
Figure 11 – Mounting support for mechanical impact test (see 9.13.2) . 81
Figure 12 – Example of mounting for a rear fixed circuit-breaker for mechanical impact
test (see 9.13.2) . 82
Figure 13 – Example of mounting of a panel board type circuit-breaker for mechanical
impact test (see 9.13.2) . 83
Figure 14 – Application of force for mechanical test on a rail-mounted circuit-breaker
(see 9.13.2.4) . 84
Figure 15 – Ball-pressure test apparatus. 84
IEC 60898-3:2019 © IEC 2019 – 7 –
Figure 16 – Example of application of force for mechanical test on two-pole plug-in
circuit-breaker, the holding in position of which depends solely on the plug-in
connections (see 9.13.2.5) . 85
Figure 17 – Diagrammatic representation (see 9.15) . 86
Figure 18 – Impedance Z for test circuit in Figures 3, 4 and 5 for the simulation of
making currents . 86
Figure A.1 – Examples of methods of measuring creepage distances and clearances . 91
Figure C.1 – Overcurrent co-ordination between a circuit-breaker and a fuse or back-
up protection by a fuse – Operating characteristics . 102
Figure C.2 – Total selectivity between two circuit-breakers . 103
Figure C.3 – Back-up protection by a circuit-breaker – Operating characteristics . 104
Figure D.1 – Examples of pillar terminals . 105
Figure D.2 – Examples of screw terminals and stud terminals . 106
Figure D.3 – Examples of saddle terminals . 107
Figure D.4 – Examples of lug terminals . 107
Figure F.1 – Test arrangement . 110
Figure F.2 – Grid circuit . 111
Figure F.3 – Grid circuit . 111
Figure H.1 – Connecting samples . 118
Figure H.2 – Examples of screwless-type terminals . 120
Figure I.1 – Example of position of the thermocouple for measurement of the
temperature rise . 124
Figure I.2 – Dimensions of male tabs . 125
Figure I.3 – Dimensions of round dimple detents (see Figure I.2) . 126
Figure I.4 – Dimensions of rectangular dimple detents (see Figure I.2) . 126
Figure I.5 – Dimensions of hole detents . 126
Figure I.6 – Dimensions of female connectors . 127
Figure J.1 – General arrangement for the test . 136
Figure J.2 . 136
Figure J.3 . 137
Figure J.4 . 137
Figure J.5 . 137
Figure J.6 . 137
Table 1 – Preferred values of rated voltage and corresponding supply systems . 28
Table 2 – Ranges of instantaneous tripping . 28
Table 3 – Minimum clearances and creepage distances . 34
Table 4 – Connectable cross-sections of copper conductors for screw-type terminals . 37
Table 5 – Temperature rise values . 40
Table 6 – Time-current operating characteristics . 41
Table 7 – Maximum power loss per pole . 44
Table 8 – List of type tests . 44
Table 9 – Cross-sectional areas (S) of test copper conductors corresponding to the
rated currents . 46
Table 10 – Screw thread diameters and applied torques . 47
– 8 – IEC 60898-3:2019 © IEC 2019
Table 11 – Pulling forces . 48
Table 12 – Test voltage of auxiliary circuits . 52
Table 13 – Test voltage for verification of impulse withstand voltage . 54
Table 14 – Test voltage for verifying the suitability for isolation, referred to the rated
impulse withstand voltage of the circuit breakers and the altitude where the test is
carried out . 54
Table 15 – Applicability of tests . 60
Table 16 – Ratio k between service short-circuit capacity (I ) and rated short-circuit
cs
capacity (I ) . 66
cn
Table B.1 – Test sequences . 92
Table B.2 – Number of samples for full test procedure . 94
Table B.3 – Reduction of samples for series of circuit-breakers having different
numbers of poles . 95
Table B.4 – Test sequences for a series of circuit-breakers being of different
instantaneous tripping classifications . 96
Table H.1 – Connectable conductors . 115
Table H.2 – Cross-sections of copper conductors connectable to screwless-type
terminals . 116
Table H.3 – Pull forces . 117
Table I.1 – Informative table on colour code of female connectors in relationship with
the cross section of the conductor . 122
Table I.2 – Overload test forces . 123
Table I.3 – Dimensions of tabs . 124
Table I.4 – Dimensions of female connectors . 127
Table J.1 – Marking for terminals . 129
Table J.2 – Connectable cross-sections of aluminium conductors for screw-type
terminals . 130
Table J.3 – List of tests according to the material of conductors and terminals. 131
Table J.4 – Connectable conductors and their theoretical diameters . 131
Table J.5 – Cross sections (S) of aluminium test conductors corresponding to the rated
currents . 132
Table J.6 – Test conductor length . 133
Table J.7 – Equalizer and busbar dimensions . 133
Table J.8 – Test current as a function of rated current . 135
Table J.9 – Example of calculation for determining the average temperature deviation D . 135
IEC 60898-3:2019 © IEC 2019 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL ACCESSORIES – CIRCUIT-BREAKERS FOR
OVERCURRENT PROTECTION FOR HOUSEHOLD
AND SIMILAR INSTALLATIONS –
Part 3: Circuit-breakers for DC operation
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 Report
...
SIST EN IEC 60898-3:2025 표준은 DC 회로 차단기에 대한 포괄적인 규정을 제공하며, 이는 가정 및 유사 설치를 위한 과전류 보호 장치의 핵심 구성 요소로 자리 잡고 있습니다. 이 표준은 DC 정격 전압이 440V를 초과하지 않고, 정격 전류가 125A를 넘지 않으며, 정격 단락 용량이 10,000A를 초과하지 않는 회로 차단기에 적용됩니다. 이 표준의 주요 강점은 사용자의 안전성을 높이고, DC 회로에서의 전기적 위험을 최소화하는 데 중점을 두고 있다는 것입니다. 또한, 실험 결과를 바탕으로 한 구체적인 성능 기준은 소비자가 높은 품질의 전기 액세서리를 선택할 수 있도록 돕습니다. SIST EN IEC 60898-3:2025는 가정용 전기 설비에서 중요한 요소로, 현대의 전기 시스템에 필수적인 안정성과 신뢰성을 보장합니다. DC 적용 회로 차단기를 선택하는 데 있어 이 표준은 필수적이며, 그 의미는 점점 더 중요성이 커지고 있습니다. 따라서 이 표준은 전기 저항 안전성을 확보하고, 기술 발전에 부합할 수 있는 핵심적인 가이드라인을 제공합니다.
The standard SIST EN IEC 60898-3:2025 addresses critical safety and operational guidelines for electrical accessories, specifically focusing on circuit-breakers for overcurrent protection in household and similar installations that operate on direct current (DC). Encompassing essential criteria, this standard is applicable to DC circuit-breakers with a rated voltage not exceeding 440V, a rated current up to 125 A, and a rated short-circuit capacity limited to 10,000 A. One of the notable strengths of this standard lies in its rigorously defined scope, which ensures that all products conforming to these specifications meet high safety and performance benchmarks. The precise definitions related to voltage, current, and short-circuit capacity provide a robust framework for manufacturers and users, facilitating the design and implementation of reliable circuit-breakers for DC applications. The specialized focus on DC operation distinguishes this standard, addressing a critical segment of the market where traditional AC guidelines may not be fully applicable. Moreover, the relevance of SIST EN IEC 60898-3:2025 is underscored by the growing integration of DC systems in various applications, particularly in renewable energy sectors such as solar power and electric vehicles. As these technologies gain traction, the demand for appropriately rated circuit-breakers that can ensure safety and functionality in DC settings becomes increasingly vital. This standard plays an indispensable role in guiding the development and assessment of such electrical components, thereby enhancing the safety infrastructure of domestic and similar installations. In summary, the SIST EN IEC 60898-3:2025 standard not only establishes a critical framework for DC circuit-breakers but also addresses emerging trends in the electrical industry, reinforcing its significance and applicability in contemporary settings.
SIST EN IEC 60898-3:2025は、家庭用および類似の設置における過電流保護用の電気アクセサリに関する重要な標準の一部です。この文書は、直流（DC）回路遮断器に特化しており、直流定格電圧が最大440V、定格電流が125A以下、定格短絡電流容量が10,000A以下の場合に適用されます。この範囲は、DC運用の回路遮断器に対する明確な基準を提供し、特に家庭用や軽工業用途において安全で信頼性の高い電気設備を確保するための重要な要素となります。 この標準の強みは、設計者およびエンジニアに対して、直流回路遮断器の選定と取り扱いに関する具体的な指針を提示する点です。これにより、過電流保護のニーズに応じた適切な製品を選ぶことが可能となり、事故や故障を未然に防ぐための助けになります。また、安全性と性能の評価基準を明確にすることで、業界全体の透明性と共通理解を促進します。 SIST EN IEC 60898-3:2025は、近年の電気機器の進化や特に再生可能エネルギーシステムの普及に伴い、ますます関連性が高まっています。DC運用の重要性が高まる中で、この標準はエネルギー効率や安全性を向上させるための基盤を提供し、その結果、持続可能な技術の発展にも寄与しています。これは、家庭用および産業用の電気インフラにおける将来の課題に対して、適応可能であることを示しています。 このように、SIST EN IEC 60898-3:2025は、DC回路遮断器に特有の要件を満たすための強固なフレームワークを提供し、関連業界全体における安全性と品質の向上に寄与するものです。
La norme SIST EN IEC 60898-3:2025 s'inscrit dans un cadre technique essentiel, visant à réglementer les dispositifs de protection contre les surcharges pour les installations électriques domestiques et similaires. Cette partie de la norme IEC 60898 se concentre spécifiquement sur les disjoncteurs en courant continu, avec des spécifications claires concernant la tension assignée, le courant nominal et la capacité de court-circuit. Le champ d'application de cette norme est particulièrement pertinent pour les applications où la protection des circuits en courant continu est cruciale, notamment dans des environnements où des tensions ne dépassant pas 440 V et des courants allant jusqu'à 125 A sont requis. De plus, la capacité de court-circuit maximale standardisée à 10 000 A assure une protection adéquate contre les fluctuations de courant, renforçant ainsi la sécurité des installations électriques. Parmi les points forts de cette norme, on note son adaptabilité face aux exigences croissantes en matière de sécurité électrique dans les habitations modernes. En intégrant des critères précis pour les disjoncteurs en courant continu, elle répond à des enjeux contemporains, tels que l'usage accru des énergies renouvelables et l'électrification de divers systèmes domestiques. La pertinence de cette norme ne peut être sous-estimée, car elle constitue une référence indispensable pour les fabricants, les installateurs et les utilisateurs finaux. L'harmonisation des critères de performance et de sécurité contribue non seulement à la fiabilité des installations électriques, mais également à une meilleure conformité aux réglementations en vigueur. En somme, la norme SIST EN IEC 60898-3:2025 est un document fondamental qui assure la protection efficace des circuits électriques en courant continu dans les installations domestiques, avec des spécifications claires et adaptées aux besoins actuels.
Die Norm SIST EN IEC 60898-3:2025 behandelt die elektrischen Zubehörteile, insbesondere die Schutzschalter für Überstromschutz in Haushalten und ähnlichen Einrichtungen, mit dem Fokus auf Schaltgeräte für den Gleichstrombetrieb. Der Anwendungsbereich dieser Norm umfasst DC-Schutzschalter mit einer Nennspannung von maximal 440 V, einem Nennstrom bis zu 125 A und einer Nennkurzschlussleistung von bis zu 10 000 A. Ein herausragendes Merkmal dieser Norm ist die umfassende Definition der Anforderungen und Prüfmethoden, die für die Sicherheit und Verlässlichkeit von Schutzschaltern im Gleichstrombetrieb entscheidend sind. Dies trägt wesentlich zur Minimierung von Risiken in der Installation und dem Betrieb von elektrischen Anlagen bei, insbesondere in Anwendungen, die zunehmend auf erneuerbare Energien und Batteriespeichersysteme setzen. Die Norm zeigt ihre Stärke auch in der klaren Strukturierung der Prüfanforderungen, die eine konsistente Umsetzung durch Hersteller und Installateure gewährleistet. Die spezifischen Vorgaben zur Kennzeichnung und Dokumentation fördern die Transparenz und Nachvollziehbarkeit der Produkte im Markt. Dies stärkt das Vertrauen der Endverbraucher und Fachkräfte in die Qualität und Sicherheit der verwendeten elektrischen Zubehörteile. Durch die Fokussierung auf Gleichstromanwendungen bleibt die Norm SIST EN IEC 60898-3:2025 besonders relevant in Zeiten, in denen die Nachfrage nach DC-Systemen in photovoltaischen Anlagen und E-Mobilität kontinuierlich steigt. Der Standard stellt sicher, dass die Geräte den modernen Anforderungen an Effizienz und Sicherheit gerecht werden, und unterstützt somit die nachhaltige Entwicklung des Elektrizitätsmarktes. Die Norm ist eine wichtige Ressource für Fachleute und Unternehmen, die sich mit der Planung, dem Bau und der Wartung von elektrischen Anlagen befassen. Sie wird nicht nur den hohen Sicherheitsanforderungen gerecht, sondern fördert auch die Innovation im Bereich der elektrischen Schutzlösungen für Haushalte und ähnliche Anwendungen.
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