oSIST prEN IEC 61008-2-1:2026/oprAA:2026

• Abstract:

  IEC 61008-1:2024, Clause 1 is applicable except for the first paragraph, which is replaced by; the first paragraph below, and the last paragraph, which is replaced by the second paragraph; below:; This part of IEC 61008 applies to residual current operated circuit-breakers, without integral; overcurrent protection, for household and similar uses (hereafter referred to as RCCBs),; classified according to IEC 61008-1:2024, 4.1.1. RCCBs according to this document are; intended for voltages not exceeding 440 V AC with frequencies of 50 Hz, 60 Hz or 50/60 Hz; and currents not exceeding 125 A, intended principally for protection against shock hazard.; This document applies in conjunction with IEC 61008-1:2024. It specifies requirements, tests; and test sequences to verify compliance and is used for certification purposes.

• Status: Not Published
• Public Enquiry End Date: 27-Feb-2026
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• 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
• Ref Project: FprEN IEC 61008-2-1:2026/FprAA:2026 - Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) - Part 2-1: RCCBs according to classification 4.1.1

• Amends: oSIST prEN IEC 61008-2-1:2026 - Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) - Part 2-1: RCCBs according to classification 4.1.1 (IEC 61008-2-1:2024)
• Effective Date: 22-Jul-2025

oSIST prEN IEC 61008-2-1:2026/oprAA:2026 is a Slovenian draft amendment to the CENELEC work on residual current operated circuit-breakers without integral overcurrent protection (RCCBs). It applies with IEC 61008-1:2024 and adds or changes requirements, tests and test sequences for RCCBs classified according to 4.1.1, mainly for protection against shock hazard in household and similar uses.

What does oSIST prEN IEC 61008-2-1:2026/oprAA:2026 specify?

oSIST prEN IEC 61008-2-1:2026/oprAA:2026 specifies additional requirements for RCCBs intended for voltages not exceeding 440 V AC and currents not exceeding 125 A. The amendment is used in conjunction with IEC 61008-1:2024 and is written for certification use.

The document is organized as targeted changes to the base part:

• Clause 9.9.1.1
• Clause 9.15.1
• new subclause 9.Z1
• Figure 2
• new Figure Z6
• Annex A tables and sample counts
• Annex ZA and Annex ZB

Annex	What it covers
Annex ZA	Normative references to international publications and their European publications
Annex ZB	Special national conditions

What are the key requirements of oSIST prEN IEC 61008-2-1:2026/oprAA:2026?

The main technical content of oSIST prEN IEC 61008-2-1:2026/oprAA:2026 is the updated test regime for RCCBs of classification 4.1.1. In practice, it tells manufacturers and test laboratories how to prove operating behaviour, especially under low-temperature and certification test conditions.

• Operating range and purpose - The scope limits the covered RCCBs to 440 V AC, 50 Hz, 60 Hz or 50/60 Hz, and up to 125 A. That matters because it fixes the product range that can be assessed to this part.
• Clause 9.9.1.1 test circuit and procedure - The amendment deletes the last paragraph of this subclause. Users need to apply the revised test circuit and procedure exactly as amended, not the previous wording.
• Clause 9.15.1 general test conditions - The third paragraph is deleted. This changes the general conditions that support the verification tests.
• New 9.Z1 low ambient air temperature verification - RCCBs for use between -25 °C and +40 °C are tested in an enclosure, or in an individual IP55 enclosure for unenclosed types. The device is cycled through cold and humid conditions, must not trip during the cycles, and must still operate correctly at -25 °C. This is the core practical addition for products used in cold environments.
• Type A and type S checks in 9.Z1 - After the alternating current test, type A RCCBs are also checked with pulsating direct current (DC) residual current, and type S RCCBs use the higher selective test level described in the subclause. That matters because the amendment distinguishes normal operating behaviour from selective and type A behaviour.
• Figure 2 and Figure Z6 - Figure 2 is retitled to cover operating characteristics, trip-free mechanism and low-temperature behaviour, and Figure Z6 gives the low-temperature test cycle. These figures define the test setup and timing used by laboratories.
• Annex A test planning - Tables A.1 to A.4 are updated for test sequences and sample numbers in full and simplified procedures. This is what certification bodies use to decide how many samples are needed and which sequence each sample follows.
• Annex ZB special national conditions - Annex ZB makes some national conditions normative for named countries, including a restriction in Germany on type AC RCCBs. That matters for market access and national approval checks.

What terms does oSIST prEN IEC 61008-2-1:2026/oprAA:2026 define?

• RCCB - A residual current operated circuit-breaker without integral overcurrent protection for household and similar uses.
• Type A - An RCCB that is also tested with pulsating DC residual current in the low-temperature verification.
• Type S - A selective RCCB variant that uses the selective residual-current test level in 9.Z1.
• Rated residual operating current (IΔn) - The residual current value used as the test reference in the operating and sample-sequence tables.
• Full test procedure - The detailed Annex A certification route with defined sample numbers and test sequences.
• Simplified test procedure - The reduced Annex A route with its own sample numbers and sequence allocation.
• Special national condition - A country-specific requirement that remains normative where Annex ZB says it applies.

Who uses oSIST prEN IEC 61008-2-1:2026/oprAA:2026?

RCCB manufacturers use this document to design products and prepare certification samples. Test laboratories and certification bodies use it to run the specified operating, climatic and low-temperature checks. Quality managers, buyers and conformity assessment teams use it to confirm that a product matches the intended RCCB classification and the national conditions relevant to its market.

What changed in oSIST prEN IEC 61008-2-1:2026/oprAA:2026 from the previous edition?

oSIST prEN IEC 61008-2-1:2026/oprAA:2026 modifies prEN IEC 61008-2-1:2026. The stated changes are the deletion of text in 9.9.1.1 and 9.15.1, the addition of 9.Z1 and Figure Z6, the revision of Figure 2, updates to Annex A sample counts and test sequences, and the addition of Annex ZA and Annex ZB.

Which standards are used with oSIST prEN IEC 61008-2-1:2026/oprAA:2026?

Standard	What it contributes
IEC 61008-1:2024	Base general rules for RCCBs; Clause 1 of that part is applied with the replacements in this amendment
IEC 61543:2022	Electromagnetic compatibility for residual current-operated protective devices
IEC 62873-2	Vocabulary for residual current operated circuit-breakers and residual current devices
prEN IEC 61008-1:2026	European publication mapped in Annex ZA for the companion general-rules part

What does the oSIST prEN IEC 61008-2-1:2026/oprAA:2026 document contain?

The document contains revised test procedures, especially the new low-temperature verification in 9.Z1 and the matching test cycle in Figure Z6. It also contains updated certification planning in Annex A through the modified test sequences and sample numbers in Tables A.1 to A.4. Annex ZA gives the European publication mapping for the cited references, and Annex ZB lists special national conditions used for national application.

SLOVENSKI STANDARD
01-februar-2026
Odklopniki na preostali (residualni) tok brez vgrajene nadtokovne zaščite za
gospodinjsko in podobno rabo (RCCB's) - 2-1. del: Odklopniki na preostali
(residualni) tok brez vgrajene nadtokovne zaščite v skladu s klasifikacijo 4.1.1
Residual current operated circuit-breakers without integral overcurrent protection for
household and similar uses (RCCBs) - Part 2-1: RCCBs according to classification 4.1.1
Fehlerstrom-/Differenzstrom-Schutzschalter ohne eingebauten Überstromschutz für
Hausinstallationen und für ähnliche Anwendungen (RCCBs) - Teil 2-1: RCCBs nach
Klassifikation 4.1.1
Interrupteurs automatiques à courant différentiel résiduel sans dispositif de protection
contre les surintensités incorporé pour usages domestiques et analogiques (ID) - Partie
2-1: ID conformes à la classification en 4.1.1
Ta slovenski standard je istoveten z: prEN IEC 61008-2-1:2026/prAA:2026
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
oSIST prEN IEC 61008-2- en
1:2026/oprAA:2026
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD DRAFT
prEN IEC 61008-2-1:2026
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 2-1: RCCBs according to classification 4.1.1
Interrupteurs automatiques à courant différentiel résiduel Fehlerstrom-/Differenzstrom-Schutzschalter ohne
sans dispositif de protection contre les surintensités eingebauten Überstromschutz für Hausinstallationen und
incorporé pour usages domestiques et analogiques (ID) - für ähnliche Anwendungen (RCCBs) - Teil 2-1: RCCBs
Partie 2-1: ID conformes à la classification en 4.1.1 nach Klassifikation 4.1.1
This draft amendment prAA, if approved, will modify the European Standard prEN IEC 61008-2-1:2026; 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: 82332 Ref. No. prEN IEC 61008-2-1:2026/prAA:2026 E

prEN IEC 61008-2-1:2026/prAA:2026 (E)
Contents Page
European foreword . 3
1 Modification to 9.9.1.1, “Test circuit and test procedure” . 4
2 Modification to 9.15.1, “General test conditions” . 4
3 Addition of 9.Z1, “Verification of the correct operation at low ambient air temperatures for
RCCBs for use at temperatures between −25 °C and +40 °C” . 4
4 Modification to Figure 2, “Test circuit for the verification of operating characteristics, and
trip-free mechanism for RCCBs classified according to 4.1.1” . 5
5 Addition of Figure Z6, “Test cycle for low temperature test (9.Z1)”. 5
6 Modification to Table A.1, “Test sequences” . 5
7 Modification to Clause A.2, “Number of samples to be submitted for full test procedure” . 5
8 Modifications to Table A.2, “Number of samples for full test procedure” . 5
9 Modifications to Table A.3, “Number of samples for simplified test procedure” . 6
10 Modifications to Table A.4, “Test sequences for RCCBs of different classification
according to 4.3 of IEC 61008-1:2024” . 6
11 Addition of Annex ZA, “Normative references to international publications with their
corresponding European publications” . 6
12 Addition of Annex ZB, “Special National Conditions” . 7
prEN IEC 61008-2-1:2026/prAA:2026 (E)

European foreword
This document (prEN IEC 61008-2-1:2026/prAA:2026) has been prepared by CLC/TC 23E “Circuit breakers
and similar devices for household and similar applications”.
This document is currently submitted to the Enquiry.
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)
This document is read in conjunction with prEN IEC 61008-2-1:2026.
This document includes the following significant technical modifications with respect to prEN
IEC 61008-2-1:2026:
— Only the essential common changes existing in EN 61008-2-1:1994 and all of its amendments and
corrigenda (if any) are maintained in this document.
prEN IEC 61008-2-1:2026/prAA:2026 (E)
1 Modification to 9.9.1.1, “Test circuit and test procedure”
Delete the last paragraph.
2 Modification to 9.15.1, “General test conditions”
Delete the 3rd paragraph.
3 Addition of 9.Z1, “Verification of the correct operation at low ambient air
temperatures for RCCBs for use at temperatures between −25 °C and +40 °C”
Add the following subclause:
“9.Z1 Verification of the correct operation at low ambient air temperatures for RCCBs for use at
temperatures between −25 °C and +40 °C
Enclosed-type RCCBs are tested in their enclosure, unenclosed-type RCCBs are mounted in an individual
enclosure with a degree of protection IP55, and are connected as for normal use (see Figure 2).
No drain hole in the enclosure shall be opened for this test.
NOTE RCCBs tested in enclosures IP55
...