oSIST prEN IEC 61008-1:2026/oprAA:2026
(Amendment)Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) - Part 1: General rules
- Abstract
This document gives general requirements and tests for residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (hereafter referred to as RCCBs), for rated operational voltages not exceeding 440 V AC, with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A, intended principally for protection against shock hazard.
RCCBs are intended to provide fault protection (previously referred to as protection against indirect contact), the exposed conductive parts of the installation being connected to an appropriate earth electrode. They are also intended to be used to provide protection against fire hazards due to a persistent earth fault current.
RCCBs having a rated residual operating current not exceeding 30 mA are used for fault protection and additional protection in the case of failure of the protective provisions against electric shock.
This document applies to RCCBs performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value.
RCCBs are intended to be operated by ordinary or uninstructed persons and designed not to require maintenance.
The requirements of this document apply for standard conditions (see 7.1). Additional requirements can be necessary for RCCBs used in locations which have severe environmental conditions. RCCBs within the scope of this document are intended for use in an environment with pollution degree 2 (see 7.3) and overvoltage category III.
RCCBs are suitable for isolation.
Special precautions (e.g. surge protective devices) can be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines, see IEC 60364-4-44 and IEC 60364-5-53).
RCCBs are suitable for use in IT systems.
RCCBs of the general type are resistant to current surges, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover.
RCCBs of type S are considered to be sufficiently resistant against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs.
Particular requirements are necessary for RCCBs intended to be used at frequencies other than 50 Hz or 60 Hz.
For RCCBs incorporated in, or intended for association with socket-outlets only, the requirements of this document can 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.
This document does not apply to:
– RCCBs the current setting of which is adjustable without a tool;
– RCCBs including batteries.
This document is not intended to be used alone; it is intended to be used in conjunction with the relevant product standard, IEC 61008-2-1 or IEC 61008-2-2.
- Status
- Not Published
- Public Enquiry End Date
- 27-Feb-2026
- Technical Committee
- EPR - Electrical accessories
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 18-Dec-2025
- Due Date
- 07-May-2026
- Completion Date
- 10-Apr-2026
oSIST prEN IEC 61008-1:2026/oprAA:2026 is a CENELEC draft amendment to the European standard for residual current operated circuit-breakers without integral overcurrent protection (RCCBs) for household and similar uses. It updates the general rules, tests, marking, and annexes for RCCBs used up to 440 V AC and 125 A, and it is read together with prEN IEC 61008-1:2026.
What does oSIST prEN IEC 61008-1:2026/oprAA:2026 specify?
oSIST prEN IEC 61008-1:2026/oprAA:2026 specifies changes to the general rules and test methods for RCCBs. The amendment keeps the focus on devices intended mainly for protection against shock hazard, fault protection, and fire hazards due to persistent earth fault current.
The scope covered by the base document still applies: RCCBs are intended for ordinary or uninstructed persons, are designed not to require maintenance, and are used in standard conditions, pollution degree 2, and overvoltage category III. The standard also covers suitability for isolation and use in IT systems.
When RCCBs are associated with socket-outlets only, the standard can be used together with IEC 60884-1 or with the national requirements of the market where the product is placed on the market.
| Annex | What it covers |
|---|---|
| Annex A | Test sequence and number of samples for certification purposes |
| Annex C | Arrangement for detecting ionized gases during short-circuit tests |
| Annex D | Routine tests |
| Annex I | Void |
| Annex ZA | Normative references to international publications with corresponding European publications |
| Annex ZB | Special national conditions |
| Annex ZC | A-deviations |
| Annex ZD | Void |
| Annex ZE | Clauses that require retesting |
What are the key requirements of oSIST prEN IEC 61008-1:2026/oprAA:2026?
oSIST prEN IEC 61008-1:2026/oprAA:2026 mainly changes classification, marking, construction, and verification rules. For a buyer, designer, or test engineer, the practical effect is that plug-in RCCBs, low-temperature variants, and several test limits now have explicit requirements.
Scope, application limits, and product type changes
Clause 1 is modified so that the document continues to cover RCCBs up to 440 V AC, 50 Hz, 60 Hz, or 50/60 Hz, and up to 125 A. It also keeps the application to protection against electric shock, fault protection, and fire hazards.
The amendment updates the treatment of adjustable residual operating current settings and keeps the exclusion for RCCBs including batteries. It also adds the note that the document is intended to be used with IEC 61008-2-1, and the companion part IEC 61008-2-2 remains relevant for other classifications.
Clause 3 adds two definitions that matter in practice:
- plug-in RCCB
- plug-in terminal
These additions are important because plug-in products now have explicit mechanical and test requirements.
Temperature ranges and product classification
Clause 4 adds classification by ambient air temperature range. The standard ranges are −5 °C to +40 °C and −25 °C to +40 °C.
Clause 5 adds the same ambient temperature ranges to the summary of characteristics. This matters because manufacturers and specifiers must state which temperature range the RCCB is designed for, and marking must match that choice.
Clause 5 also updates standard values for key ratings, including the standard value of rated impulse withstand voltage (Uimp) and the standard values of rated residual operating current (IΔn). In practice, this ties the product declaration and the test program to fixed rating values.
Marking and product information
Clause 6 adds standard marking rules for plug-in RCCBs. The base for plug-in RCCBs must be marked with the rated current or maximum rated current and the trade mark.
The amendment also allows additional marking for other standards or extra requirements, but only if the related standard is clearly identified next to the marking and kept separate from the standard marking. That matters for products sold under more than one scheme, because the markings must not be mixed in a way that confuses users or inspectors.
Table 1 is updated to include marking for ambient temperature range, extra performance marking, and information linked to grid distance "a" where relevant. For RCCBs for use at −25 °C to +40 °C, the product is marked with the snowflake symbol where applicable.
Mechanical construction and low-temperature behaviour
Clause 8 adds mechanical mounting requirements for plug-in RCCBs. If the holding position depends only on plug-in connections, the device has to pass the relevant mounting test.
A new subclause also requires RCCBs intended for −25 °C to +40 °C to operate reliably at low temperatures. This is a practical design point for enclosures, plastics, contacts, and latching parts.
Clause 8.11 changes the test device requirements by setting limits for the ampere-turns produced during operation of the test device. The values differ for 30 mA devices and for other residual operating currents, so the test has to be matched to the device rating.
Verification and test procedures
Clause 9 updates several test procedures and acceptance conditions. Among the most important changes are the impulse withstand checks, the verification of suitability for isolation, and the tests for behaviour in IT systems.
The amendment also changes the test sequence for plug-in RCCBs. For products whose holding in position depends solely on their plug-in connection, the mechanical test applies a 20 N force for 1 minute, and the device must remain secure and undamaged.
Several clauses now require the break time to be checked on one randomly selected pole after certain tests, and the measured break time must stay within the limit in Table 11 at IΔn. In practice, that means the device has to retain its operating performance after the stress test, not just pass the initial type test.
What terms does oSIST prEN IEC 61008-1:2026/oprAA:2026 define?
- Residual current operated circuit-breaker without integral overcurrent protection (RCCB) - A device that detects residual current, compares it with its operating value, and opens the protected circuit when the residual current exceeds that value.
- Plug-in RCCB - An RCCB with one or more plug-in terminals, designed for use with appropriate means for the plug-in connection.
- Plug-in terminal - A terminal whose connection and disconnection can be made without moving the conductors of the corresponding circuit.
- Rated residual operating current (IΔn) - The residual current value used to characterize when the RCCB should trip.
- Rated impulse withstand voltage (Uimp) - The standard impulse voltage used to verify insulation coordination and clearance performance.
- Rated conditional short-circuit current (Icn) - The short-circuit current rating used in coordination checks with the protective device.
- Type S - An RCCB type considered sufficiently resistant to unwanted tripping under surge conditions, even if a flashover and follow-on current occur.
Who uses oSIST prEN IEC 61008-1:2026/oprAA:2026?
oSIST prEN IEC 61008-1:2026/oprAA:2026 is used by RCCB manufacturers, test laboratories, certification bodies, and electrical product specifiers. They use it to design devices, choose ratings and markings, run type tests and routine tests, and decide whether a product is suitable for household and similar installations, including plug-in versions and low-temperature applications.
What changed in oSIST prEN IEC 61008-1:2026/oprAA:2026 from the previous edition?
oSIST prEN IEC 61008-1:2026/oprAA:2026 modifies prEN IEC 61008-1:2026 and keeps only the essential common changes carried over from EN 61008-1:2012 and its amendments and corrigenda.
The main technical changes stated in the amendment are:
- new definitions for plug-in RCCB and plug-in terminal
- new ambient air temperature ranges, including −25 °C to +40 °C
- updated marking rules for plug-in RCCBs and low-temperature products
- updated test-device limits and several test procedures
- added mechanical tests for plug-in RCCBs
- deletion of the former clause on screw-type terminals for aluminium conductors
- Annex I made void
- updates to Annex A, Annex C, Annex D, Annex ZA, Annex ZB, Annex ZC, and Annex ZE
Which standards are used with oSIST prEN IEC 61008-1:2026/oprAA:2026?
| Standard | What it contributes |
|---|---|
| IEC 61008-2-1 | Companion part for RCCBs according to classification 4.1.1 |
| IEC 61008-2-2 | Companion part for RCCBs according to classifications 4.1.2 to 4.1.6 |
| IEC 60884-1 | Used with RCCBs intended for association with socket-outlets only, where applicable |
| IEC 60060-2 | High-voltage test measuring systems |
| IEC 60068-2-30 | Damp heat, cyclic environmental test |
| IEC 60068-3-4 | Support and guidance for damp heat testing |
| IEC 60228 | Conductors of insulated cables |
| IEC 60417 | Graphical symbols used on equipment |
| IEC 60529 | Degrees of protection provided by enclosures |
| IEC 60664-1 | Insulation coordination principles, requirements, and tests |
| IEC 60664-3 | Use of coating, potting, or moulding for protection against pollution |
| IEC 60695-2-10 | Glow-wire test apparatus and common procedure |
| IEC 61032 | Probes for verification of protection by enclosures |
| IEC 62873-2 | Vocabulary for residual current devices |
| IEC 62873-3-1 | Requirements for screwless-type terminals for external copper conductors |
| IEC 62873-3-2 | Requirements for flat quick-connect terminations |
What does the oSIST prEN IEC 61008-1:2026/oprAA:2026 document contain?
oSIST prEN IEC 61008-1:2026/oprAA:2026 contains the updated text for the Introduction, Clauses 1, 2, 3, 4, 5, 6, 8, 9, and 19, plus changes to Tables 1, 11, 19, 23, 36, 46, and 47. It also adds Figure Z5 for the mechanical test on a two-pole plug-in RCCB.
The document includes the certification sample sequence in Annex A, the ionized-gas test arrangement in Annex C, routine tests in Annex D, and the retesting list in Annex ZE. Annex ZA gives the European publication mapping for the normative references, while Annex ZB and Annex ZC cover national conditions and A-deviations.
Relations
- Effective Date
- 22-Jul-2025
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Frequently Asked Questions
oSIST prEN IEC 61008-1:2026/oprAA:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) - Part 1: General rules". This standard covers: This document gives general requirements and tests for residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (hereafter referred to as RCCBs), for rated operational voltages not exceeding 440 V AC, with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A, intended principally for protection against shock hazard. RCCBs are intended to provide fault protection (previously referred to as protection against indirect contact), the exposed conductive parts of the installation being connected to an appropriate earth electrode. They are also intended to be used to provide protection against fire hazards due to a persistent earth fault current. RCCBs having a rated residual operating current not exceeding 30 mA are used for fault protection and additional protection in the case of failure of the protective provisions against electric shock. This document applies to RCCBs performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value. RCCBs are intended to be operated by ordinary or uninstructed persons and designed not to require maintenance. The requirements of this document apply for standard conditions (see 7.1). Additional requirements can be necessary for RCCBs used in locations which have severe environmental conditions. RCCBs within the scope of this document are intended for use in an environment with pollution degree 2 (see 7.3) and overvoltage category III. RCCBs are suitable for isolation. Special precautions (e.g. surge protective devices) can be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines, see IEC 60364-4-44 and IEC 60364-5-53). RCCBs are suitable for use in IT systems. RCCBs of the general type are resistant to current surges, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover. RCCBs of type S are considered to be sufficiently resistant against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs. Particular requirements are necessary for RCCBs intended to be used at frequencies other than 50 Hz or 60 Hz. For RCCBs incorporated in, or intended for association with socket-outlets only, the requirements of this document can 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. This document does not apply to: – RCCBs the current setting of which is adjustable without a tool; – RCCBs including batteries. This document is not intended to be used alone; it is intended to be used in conjunction with the relevant product standard, IEC 61008-2-1 or IEC 61008-2-2.
This document gives general requirements and tests for residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (hereafter referred to as RCCBs), for rated operational voltages not exceeding 440 V AC, with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A, intended principally for protection against shock hazard. RCCBs are intended to provide fault protection (previously referred to as protection against indirect contact), the exposed conductive parts of the installation being connected to an appropriate earth electrode. They are also intended to be used to provide protection against fire hazards due to a persistent earth fault current. RCCBs having a rated residual operating current not exceeding 30 mA are used for fault protection and additional protection in the case of failure of the protective provisions against electric shock. This document applies to RCCBs performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value. RCCBs are intended to be operated by ordinary or uninstructed persons and designed not to require maintenance. The requirements of this document apply for standard conditions (see 7.1). Additional requirements can be necessary for RCCBs used in locations which have severe environmental conditions. RCCBs within the scope of this document are intended for use in an environment with pollution degree 2 (see 7.3) and overvoltage category III. RCCBs are suitable for isolation. Special precautions (e.g. surge protective devices) can be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines, see IEC 60364-4-44 and IEC 60364-5-53). RCCBs are suitable for use in IT systems. RCCBs of the general type are resistant to current surges, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover. RCCBs of type S are considered to be sufficiently resistant against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs. Particular requirements are necessary for RCCBs intended to be used at frequencies other than 50 Hz or 60 Hz. For RCCBs incorporated in, or intended for association with socket-outlets only, the requirements of this document can 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. This document does not apply to: – RCCBs the current setting of which is adjustable without a tool; – RCCBs including batteries. This document is not intended to be used alone; it is intended to be used in conjunction with the relevant product standard, IEC 61008-2-1 or IEC 61008-2-2.
oSIST prEN IEC 61008-1:2026/oprAA:2026 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.
oSIST prEN IEC 61008-1:2026/oprAA:2026 has the following relationships with other standards: It is inter standard links to oSIST prEN IEC 61008-1:2026. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
oSIST prEN IEC 61008-1:2026/oprAA:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-februar-2026
Odklopniki na preostali (residualni) tok brez vgrajene nadtokovne zaščite za
gospodinjsko in podobno rabo (RCCB's) - 1. del: Splošna pravila
Residual current operated circuit-breakers without integral overcurrent protection for
household and similar uses (RCCBs) - Part 1: General rules
Fehlerstrom-/Differenzstrom-Schutzschalter ohne eingebauten Überstromschutz
(RCCBs) für Hausinstallationen und für ähnliche Anwendungen - Teil 1: Allgemeine
Anforderungen
Interrupteurs automatiques à courant différentiel résiduel sans dispositif de protection
contre les surintensités incorporé pour usages domestiques et analogues (ID) - Partie 1:
Règles générales
Ta slovenski standard je istoveten z: prEN IEC 61008-1:2026/prAA:2026
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
oSIST prEN IEC 61008- en
1:2026/oprAA:2026
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD DRAFT
prEN IEC 61008-1:2026
NORME EUROPÉENNE
EUROPÄISCHE NORM
prAA
January 2026
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
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
This draft amendment prAA, if approved, will modify the European Standard prEN IEC 61008-1:2026; it is submitted to CENELEC members
for enquiry.
Deadline for CENELEC: 2026-04-24.
It has been drawn up by CLC/TC 23E.
If this draft becomes an amendment, 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.
This draft amendment was established by CENELEC 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
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
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 82331 Ref. No. prEN IEC 61008-1:2026/prAA:2026 E
prEN IEC 61008-1:2026/prAA:2026 (E)
14 Contents Page
15 European foreword . 5
16 1 Modification to the Introduction . 6
17 2 Modifications to Clause 1, “Scope” . 6
18 3 Modification to Clause 2, “Normative references” . 6
19 4 Modification to Clause 3, “Terms and definitions” . 6
20 5 Modification to 4.1.2, “RCCB with 2 or 4 current paths operating correctly on the
21 occurrence of residual current within the voltage range of 1,1 U and 85 V” . 6
e
22 6 Modification to 4.2, “According to the possibility of adjusting the residual operating
23 current” . 6
24 7 Deletion of 4.8.4, “RCCB with screw-type terminals for aluminium conductors” . 7
25 8 Modifications to 4.9, “According to the number of poles and current paths” . 7
26 9 Addition of 4.Z1, “According to the range of ambient air temperature” . 7
27 10 Modification to 5.1, “Summary of characteristics” . 7
28 11 Modification to 5.2.1.3, “Rated impulse withstand voltage (U )” . 7
imp
29 12 Modification to 5.2.5, “Rated residual operating current (I )” . 7
Δn
30 13 Modifications to 5.3.3, “Standard values of rated residual operating current (I )” . 7
Δn
31 14 Modification to 5.3.6, “Standard values of rated impulse withstand voltage (U )” . 7
imp
32 15 Modifications to 5.3.7.1, “Standard limit values of break time and non-actuating time for
33 alternating residual currents (RMS values) of type AC and A” . 7
34 16 Modification to 5.3.12, “Standard and preferred values of the rated conditional short-
35 circuit current (I )” . 7
nc
36 17 Addition of 5.3.Z1, “Standard ranges of ambient air temperature” . 8
37 18 Modifications to Clause 6, “Marking and other product information” . 8
38 19 Modifications to 8.1.1, “General” . 8
39 20 Modification to 8.1.2, “Mechanism” . 8
40 21 Modifications to 8.1.5, “Terminals for external conductors” . 9
41 22 Addition of 8.1.Z1, “Mechanical mounting of plug-in RCCBs” . 9
42 23 Modifications to 8.11, “Test device” . 9
43 24 Addition of 8.Z1, “Behaviour of RCCBs at low ambient air temperatures” . 9
44 25 Modification to 9.1, “General” . 9
45 26 Modification to 9.2, “Test conditions” . 9
46 27 Modification to 9.4, “Test of reliability of screws, current-carrying parts and connections” . 10
47 28 Modification to 9.5, “Test of reliability of screw-type terminals for external copper
48 conductors”. 10
49 29 Modification to 9.7.7.2, “Verification of clearances with the impulse withstand voltage” . 10
50 30 Modification to 9.7.7.3, “Verification of resistance of the insulation of open contacts
51 against an impulse voltage (suitability for isolation)” . 10
prEN IEC 61008-1:2026/prAA:2026 (E)
52 31 Modification to 9.8.2, “Test procedure” . 10
53 32 Modification to 9.10.2, “Test procedure” . 10
54 33 Modification to 9.10.3, “Condition of the RCCB after test” . 10
55 34 Modification to 9.11.2.1, “General conditions for test” . 10
56 35 Modifications to 9.11.2.1 a), “Test circuit” . 10
57 36 Modification to 9.11.2.1 b), “Tolerances on test quantities” . 11
58 37 Modification to 9.11.2.1 d), “Power frequency recovery voltage” . 11
59 38 Modification to 9.11.2.1 f), “Condition of the RCCB for test” . 11
60 39 Modification to 9.11.2.1 f) 1), “Test in free air” . 11
61 40 Modification to 9.11.2.1 h), “Behaviour of the RCCB during tests” . 11
62 41 Modification to 9.11.2.1 i), “Condition of the RCCB after tests” . 11
63 42 Modification to 9.11.2.3 c), “Verification of the suitability in IT systems” . 11
64 43 Modification to 9.12.2.1, “General” . 12
65 44 Modification to 9.12.2.3, “Test for RCCBs intended to be mounted on a rail” . 12
66 45 Addition of 9.12.2.4, “Test for plug-in RCCBs” . 12
67 46 Modification to 9.13.1, “Test on complete RCCBs” . 12
68 47 Modification to 9.16, “Verification of the operation of the test device at the limits of rated
69 operational voltage” . 12
70 48 Modification to 9.18, “Verification of the behaviour of RCCBs in the event of overcurrent
71 in the main circuit” . 13
72 49 Modification to 9.20.1.3, “Test procedure” . 13
73 50 Modifications to 9.20.1.5, “Final verification” . 13
74 51 Modifications to 9.20.2, “Test with temperature of 40 °C” . 13
75 52 Modifications to 9.21, “Verification of withstand against ageing” . 13
76 53 Modification to 9.24.3, “Additional tests for RCCBs with a terminal intended to be
77 connected to the PE” . 13
78 54 Modifications to Table 1, “Marking” . 13
79 55 Modifications to Table 11, “Standard limit values of break time and non-actuating time for
80 alternating residual currents (RMS values) for type AC and A” . 14
81 56 Modification to Clause 19, “Rated impulse withstand voltage as a function of the nominal
82 voltage of the installation” . 14
83 57 Modification to Table 23, “Test voltage for verifying the suitability for isolation, with
84 reference to the rated impulse withstand voltage of the RCCB and the altitude where the
85 test is carried out” . 14
86 58 Modifications to Table 36, “Minimum values of I t and I ” . 14
p
87 59 Modification to Table 46, “Standard values of rated operational voltage” . 14
88 60 Modification to Table 47, “Values of influencing quantities” . 14
89 61 Modification to 9.24.4 “Verification after the tests” . 14
90 62 Addition of Figure Z5, “Example of application of force for mechanical test on two-pole
91 plug-in RCCB, the holding in position of which depends solely on the plug-in
92 connections (9.12.2.4)” . 15
93 63 Modification to Annex A, “Test sequence and number of samples to be submitted for
94 certification purposes” . 15
prEN IEC 61008-1:2026/prAA:2026 (E)
95 64 Modification to Annex C, “Arrangement for the detection of the emission of ionized gases
96 during short-circuit tests” . 15
97 65 Modification to Annex D, “Routine tests” . 15
98 66 Modification to Annex I, “Correspondence between ISO and AWG copper conductors” . 16
99 67 Addition of Annex ZA, “Normative references to international publications with their
100 corresponding European publications” . 16
101 68 Addition of Annex ZB, “Special national condition” . 17
102 69 Addition of Annex ZC, “A-deviations” . 19
103 70 Addition of Annex ZD, “void” . 21
104 71 Addition of Annex ZE, “List of clauses that require retesting” . 21
prEN IEC 61008-1:2026/prAA:2026 (E)
105 European foreword
106 This document (prEN IEC 61008-1:2026/prAA:2026) has been prepared by CLC/TC 23E “Circuit breakers and
107 similar devices for household and similar applications”.
108 This document is currently submitted to the Enquiry.
109 The following dates are proposed:
• latest date by which the existence of this (doa) dav + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dav + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dav + 60 months (to
conflicting with this document have to be be confirmed or
withdrawn modified when voting)
110 This document is read in conjunction with prEN IEC 61008-1:2026.
111 This document includes the following significant technical modifications with respect to
112 prEN IEC 61008-1:2026:
113 — Only the essential common changes existing in EN 61008-1:2012 and all of its amendments and
114 corrigenda (if any) are maintained in this document.
prEN IEC 61008-1:2026/prAA:2026 (E)
116 1 Modification to the Introduction
117 Replace list item 2) with the following:
118 “2) IEC 61008-2-1, Residual current operated circuit-breakers without integral overcurrent protection for
119 household and similar uses (RCCBs) – Part 2-1: RCCBs according to classification 4.1.1.”
120 2 Modifications to Clause 1, “Scope”
121 Delete the second sentence of the 6th paragraph “Additional requirements can be necessary for RCCBs used
122 in locations which have severe environmental conditions”.
123 Add in the 6th paragraph, after “RCCB within the scope of this document are intended for use in an
124 environment with pollution degree 2 (see 7.3)”, the following: “and overvoltage category III”.
125 Delete in the third paragraph after note 6: “, with the exception of those with an uninterrupted neutral,”.
126 Delete Note 11.
127 Delete in the penultimate paragraph in the 1st list item “without a tool”.
128 Replace the last paragraph with the following:
129 “This document is not intended to be used alone; it is intended to be used in conjunction with IEC 61008-2-1.”
130 3 Modification to Clause 2, “Normative references”
131 Delete the following reference:
132 IEC 62873-3-3, Residual current operated circuit-breakers for household and similar use – Part 3-3: Specific
133 requirements for devices with screw-type terminals for external untreated aluminium conductors and with
134 aluminium screw-type terminals for use with copper or with aluminium conductors
135 4 Modification to Clause 3, “Terms and definitions”
136 Add the following term entries:
137 “3.Z1
138 plug-in RCCB
139 RCCB having one or more plug-in terminals (3.Z2) and designed for use with appropriate means for the plug-
140 in connection
141 3.Z2
142 plug-in terminal
143 terminal the electrical connection and disconnection of which can be made without displacing the conductors
144 of the corresponding circuit
145 Note 1 to entry: The connection is made without the use of a tool and is provided by the resilience of the fixed and/or
146 moving parts and/or by springs.”
147 5 Modification to 4.1.2, “RCCB with 2 or 4 current paths operating correctly on the
148 occurrence of residual current within the voltage range of 1,1 U and 85 V”
e
149 Delete Note 1.
150 6 Modification to 4.2, “According to the possibility of adjusting the residual
151 operating current”
152 Replace the title with “Void” and delete the text.
prEN IEC 61008-1:2026/prAA:2026 (E)
153 7 Deletion of 4.8.4, “RCCB with screw-type terminals for aluminium conductors”
154 Delete 4.8.4, including the note.
155 8 Modifications to 4.9, “According to the number of poles and current paths”
156 Delete 4.9.1, including the note.
157 Delete 4.9.4, including the note.
158 Renumber accordingly.
159 9 Addition of 4.Z1, “According to the range of ambient air temperature”
160 Add the following subclause:
161 “4.Z1 According to the range of ambient air temperature
162 — RCCBs for use at ambient air temperatures between −5 °C and +40 °C;
163 — RCCBs for use at ambient air temperatures between −25 °C and +40 °C.”
164 10 Modification to 5.1, “Summary of characteristics”
165 Add the following item to the list of characteristics:
166 “— ranges of ambient air temperature (see 5.3.Z1)”
167 11 Modification to 5.2.1.3, “Rated impulse withstand voltage (Uimp)”
168 Replace “Table 19” with “5.3.6”.
169 12 Modification to 5.2.5, “Rated residual operating current (IΔn)”
170 Delete the second paragraph.
171 13 Modifications to 5.3.3, “Standard values of rated residual operating current (IΔn)”
172 Add “1 A” to the standard values.
173 Delete the note.
174 14 Modification to 5.3.6, “Standard values of rated impulse withstand voltage (Uimp)”
175 Replace the text of 5.3.6 with the following:
176 “The standard value of the rated impulse voltage is 4 kV.”
177 15 Modifications to 5.3.7.1, “Standard limit values of break time and non-actuating
178 time for alternating residual currents (RMS values) of type AC and A”
179 Delete the note.
180 16 Modification to 5.3.12, “Standard and preferred values of the rated conditional
181 short-circuit current (I )”
nc
182 Delete the note.
prEN IEC 61008-1:2026/prAA:2026 (E)
183 17 Addition of 5.3.Z1, “Standard ranges of ambient air temperature”
184 Add the following subclause:
185 “5.3.Z1 Standard ranges of ambient air temperature
186 The standard ranges of ambient air temperature are:
187 — −5 °C to +40 °C
188 — −25 °C to +40 °C.”
189 18 Modifications to Clause 6, “Marking and other product information”
190 Add after the title of Clause 6 the following subclause title:
191 “6.Z1 Standard marking”
192 Delete the note.
193 Add after the paragraph that starts with “The marking of non-universal terminals …” the following:
194 “The base for plug-in RCCBs shall be marked with the following:
195 — rated current or maximum rated current;
196 — trade mark.”
197 Add the following subclause:
198 “6.Z2 Additional marking
199 Additional marking to other standards (EN or IEC or other) or additional requirements are allowed under the
200 following conditions:
201 — the RCCB shall comply with all the requirements of the additional standard;
202 — the relevant standard to which the additional marking refers shall be indicated adjacent to this marking
203 and shall be clearly differentiated or separated from the standard marking according to 6.Z1.
204 Compliance is checked by inspection and by carrying out all the test sequences required by the relevant
205 standard. Equivalent or less severe test sequences do not need to be repeated.”
206 19 Modifications to 8.1.1, “General”
207 Delete in the third paragraph “other than those specifically intended for changing the setting of the residual
208 operating current or of the time delay”.
209 Delete the first sentence of fourth paragraph “Changing from …a tool”.
210 Delete Note 1.
211 Delete the sentence after Note 1.
212 Delete Note 4.
213 Renumber the notes accordingly.
214 20 Modification to 8.1.2, “Mechanism”
215 Delete the note.
prEN IEC 61008-1:2026/prAA:2026 (E)
216 21 Modifications to 8.1.5, “Terminals for external conductors”
217 Replace in the last paragraph of 8.1.5.1 “IEC 62873-3-1, IEC 62873-3-2, and IEC 62873-3-3, as relevant for
218 the type of connection” with “IEC 62873-3-1 and IEC 62873-3-2, as relevant for the type of connection”.
219 Delete in 8.1.5.2 the last list item “— terminals for untreated aluminium conductors …”.
220 22 Addition of 8.1.Z1, “Mechanical mounting of plug-in RCCBs”
221 Add the following subclause:
222 “8.1.Z1 Mechanical mounting of plug-in RCCBs
223 8.1.Z1.1 General
224 The mechanical mounting of plug-in RCCBs shall be reliable and have adequate stability in accordance with
225 8.1.Z1.2 and 8.1.Z1.3.
226 8.1.Z1.2 Plug-in RCCBs, the holding in position of which does not depend solely on their plug-in
227 connection(s)
228 Compliance of the mechanical mounting is checked by the relevant tests of 9.12.
229 8.1.Z1.3 Plug-in RCCBs, the holding in position of which depends solely on their plug-in connection(s)
230 Compliance of the mechanical mounting is checked by the relevant tests of 9.12.”
231 23 Modifications to 8.11, “Test device”
232 Replace the 2nd paragraph with the following:
233 “For RCCBs with rated residual current of 30 mA the ampere-turns produced when operating the test device
234 of an RCCB, supplied at rated voltage or at the highest value of the voltage range, if applicable, shall not
235 exceed 1,66 times the ampere-turns produced, when a residual current equal to I is passed through one of
Δn
236 the poles of the RCCB.
237 For RCCBs with rated residual currents other than 30 mA theThe ampere-turns produced when operating the
238 test device of an RCCB supplied at rated operational voltage or at the highest value of the voltage range, if
239 applicable, shall not exceed 2,5 times the ampere-turns produ
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