FprEN IEC 61008-2-1:2026/FprAA: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
• Publication Date: 04-Feb-2027
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• Technical Committee: CLC/TC 23E - Circuit breakers and similar devices for household and similar applications
• Drafting Committee: CLC/TC 23E/WG 01 - Maintenance of TC23E standards
• Current Stage: 5020 - Vote circulated - Formal Approval
• Start Date: 16-Oct-2026
• Due Date: 23-Apr-2027
• Completion Date: 16-Oct-2026
• Ref Project: oSIST prEN IEC 61008-2-1:2026/oprAA: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: FprEN 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
• Effective Date: 22-Jul-2025

FprEN IEC 61008-2-1:2026/FprAA:2026 is a CENELEC draft amendment for residual current operated circuit-breakers without integral overcurrent protection (RCCBs) for household and similar uses. It works with IEC 61008-1:2024 and adds requirements, test methods and test sequences for RCCBs classified according to 4.1.1, for use up to 440 V AC and 125 A and mainly for protection against shock hazard. Manufacturers, test laboratories and certification bodies use it to check conformity and prepare certification.

What does FprEN IEC 61008-2-1:2026/FprAA:2026 specify?

FprEN IEC 61008-2-1:2026/FprAA:2026 specifies the extra test and verification rules for RCCBs in the 4.1.1 classification. The amendment is built on IEC 61008-1:2024 and keeps the focus on operating behavior, climatic performance, sample planning and certification use.

The document is organized as a set of targeted changes to the parent standard:

Part of the document	What it covers
Clause 1	Scope wording for this RCCB class
9.9.1.1 and 9.15.1	Test circuit/procedure and general test conditions
9.Z1	Low ambient air temperature verification
Figure 2 and Figure Z6	Test circuit and low-temperature cycle
Annex A tables	Test sequences and sample numbers
Annex ZA	Normative references and European equivalents
Annex ZB	Special national conditions

The amendment stays within RCCBs without integral overcurrent protection. In practice, it is the document to use when you need the extra requirements for this RCCB class rather than the general RCCB rules alone.

What are the key requirements of FprEN IEC 61008-2-1:2026/FprAA:2026?

Product scope and operating checks

FprEN IEC 61008-2-1:2026/FprAA:2026 applies to RCCBs classified according to IEC 61008-1:2024, 4.1.1, for voltages up to 440 V AC, frequencies of 50 Hz, 60 Hz or 50/60 Hz, and currents up to 125 A. It is intended principally for protection against shock hazard.

Clauses 9.9.1.1 and 9.15.1 are modified, so the test circuit, the test procedure and the general test conditions in the parent standard are not used exactly as printed there. For a lab, this means the base test plan must be read together with these changes before any conformity testing starts.

Low-temperature verification

New Clause 9.Z1 adds a specific check for correct operation at low ambient air temperatures for RCCBs used between -25 °C and +40 °C. Enclosed types are tested in their enclosure, while unenclosed types are mounted in an individual IP55 enclosure and connected as for normal use.

The test cycles the RCCB through stabilization, cooling to -25 °C, holding at that temperature, and returning to +23 °C with humidity restored. The RCCB shall not trip during the cycles, and the measured break time during the cold-point current application shall stay within the limit referenced from prEN IEC 61008-1:2026. After the test, the unit must still be visually acceptable and must be switchable on at -25 °C without residual current.

For type A RCCBs, the amendment also requires a pulsating DC residual-current check after the AC test. That matters because it confirms behavior with both AC and pulsating DC fault currents at low temperature.

Sample planning and test sequences

Annex A is updated for test sequences and sample numbers. Table A.1 adds the new G0 and G1 sequences, and Tables A.2 and A.3 revise the numbers of samples for full and simplified test procedures. Table A.4 is also updated for RCCBs of different classifications according to IEC 61008-1:2024, 4.3.

In practice, this means certification work needs to be planned with the revised sample counts and the new low-temperature sequence in mind. The amendment also notes a case where extra samples may be used if the terminals on one sample are not enough for all terminal tests.

National conditions

Annex ZB records special national conditions. It states that type AC RCCBs are not permitted in Germany, and it preserves United Kingdom notes for Tables A.3 and A.4. For market access, this means the European text still has to be checked against national rules.

What terms does FprEN IEC 61008-2-1:2026/FprAA:2026 define?

• Residual current operated circuit-breaker without integral overcurrent protection (RCCB) - A device that disconnects on residual current and relies on separate overcurrent protection.
• Residual current - The current associated with a fault to earth that the RCCB detects.
• Type A - An RCCB type tested here with AC and pulsating DC residual currents.
• Type S - A selective RCCB type that is checked with the delayed/coordination-related test conditions used in the amendment.
• IP55 - The enclosure degree of protection used for the low-temperature test on unenclosed types.
• Trip-free mechanism - The operating behavior checked by the test circuit in Figure 2, so the device can trip correctly under test conditions.

Who uses FprEN IEC 61008-2-1:2026/FprAA:2026?

FprEN IEC 61008-2-1:2026/FprAA:2026 is used by RCCB manufacturers, test laboratories, certification bodies, and electrical product engineers. Quality managers use it to set up conformity tests and sample plans, while buyers and specifiers use it to confirm the device class, operating limits and national restrictions before procurement or market entry. It is most relevant where household and similar-use electrical protection devices are designed, tested or certified.

What changed in FprEN IEC 61008-2-1:2026/FprAA:2026 from the previous edition?

FprEN IEC 61008-2-1:2026/FprAA:2026 modifies prEN IEC 61008-2-1:2026. The foreword says it keeps only the essential common changes that already existed in EN 61008-2-1:1994 and its amendments and corrigenda.

The stated changes are:

• deletion of the last paragraph of 9.9.1.1
• deletion of the third paragraph of 9.15.1
• addition of Clause 9.Z1 for low ambient air temperature verification
• revision of Figure 2
• addition of Figure Z6 for the low-temperature cycle
• revision of Annex A tables for test sequences and sample numbers
• addition of Annex ZA and Annex ZB

Which standards are used with FprEN IEC 61008-2-1:2026/FprAA:2026?

• IEC 61008-1:2024 - The base standard that supplies the general rules and the main RCCB test framework.
• IEC 61543:2022 - Provides the electromagnetic compatibility requirements for household and similar-use residual current-operated protective devices.
• IEC 62873-2 - Provides vocabulary for residual current operated circuit-breakers and residual current devices.
• prEN IEC 61008-1:2026 - The European publication listed in Annex ZA for IEC 61008-1:2024.

What does the FprEN IEC 61008-2-1:2026/FprAA:2026 document contain?

FprEN IEC 61008-2-1:2026/FprAA:2026 contains revised test circuits, a new low-temperature test cycle, and updated sample-count tables for certification testing. It also provides the amended test sequences in Annex A, so users can plan full or simplified procedures against the correct sample numbers.

Figure 2 gives the test circuit for operating characteristics, trip-free mechanism and low-ambient-temperature behavior. Figure Z6 gives the temperature/humidity cycle used in Clause 9.Z1. Annex ZA maps international references to European publications, and Annex ZB records the national conditions that affect application in specific countries.

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
...