EN 61811-1:2015/A2:2026
(Amendment)Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
General Information
- Abstract
- Status
- Published
- Publication Date
- 10-Sep-2026
- Technical Committee
- CLC/SR 94 - All-or-nothing electrical relays
- Current Stage
- 6060 - Document made available - Publishing
- Start Date
- 11-Sep-2026
- Due Date
- 18-Dec-2026
- Completion Date
- 11-Sep-2026
Overview
EN 61811-1:2015/A2:2026 is the CLC-adopted European standard amendment that provides generic and blank detail specifications for electromechanical telecom elementary relays of assessed quality. It aligns with IEC 61811-1 and updates essential requirements for design, testing, and classification of relays commonly used in telecommunications, control, and other electronic systems. This amendment focuses on updates to relay types, dielectric and impulse test voltages, and specification layout, reinforcing reliability and interoperability across various applications.
Key Topics
Relay Types and Construction:
- Introduction of Type 5 relays with two change-over contacts and compact base dimensions (9.1 mm × 4.9 mm max.).
- Detailed classification of relay construction, contact configuration, and mounting options (through-hole and surface mount).
Dielectric and Impulse Test Requirements:
- Revised tables prescribing dielectric test voltages for different relay types to ensure electrical insulation integrity.
- Updated impulse test voltage levels and pulse shapes, providing guidance for evaluating relay withstand capability under surge conditions.
Specification and Documentation:
- Standardized layout for relay detail specifications, improving consistency and readability.
- Expanded example front pages, including layout for new relay types and clarification of mandatory elements.
Contact and Environmental Data:
- Conditions for rated contact voltages and currents, suitable for telecom and industrial control scenarios.
- Environmental and climatic criteria according to IEC 60068-1, defining operational and storage temperature limits for assessed quality.
Applications
This standard is vital for organizations engaged in the design, manufacturing, and quality assurance of electromechanical relays used in:
- Telecommunication Systems: Ensures relays meet rigorous quality and reliability levels required for switching and signalling functions in exchange equipment and network infrastructure.
- Industrial Automation: Covers relays applied in control panels, process automation, and safety circuits, supporting both traditional mounting and advanced surface-mount technologies.
- Electronic Equipment: Provides a basis for relay selection and specification in PCB assemblies for instrumentation, control, and protection.
- Other Sectors: Applicable wherever relays of assessed quality are needed, including transportation, building automation, and other critical applications demanding standardized performance.
By adhering to EN 61811-1:2015/A2:2026, manufacturers and system integrators can guarantee compatibility, electrical safety, and longevity in demanding environments.
Related Standards
The following standards complement or are referenced within EN 61811-1:2015/A2:2026:
- IEC 61810 Series: General requirements for electromechanical elementary relays, including performance and safety aspects.
- IEC 61811-1: The foundational generic and blank detail specification for telecom elementary relays.
- IEC 60068-1: Environmental testing to classify relays by climatic category.
- IEC 61810-2 and IEC 61810-7: Further relay specification and product qualification details.
These standards provide a comprehensive framework for the assessment, performance, and interchangeability of relays in the global marketplace.
Keywords: electromechanical relays, telecom relays, relay quality, detail specifications, dielectric test, impulse test, CLC standards, IEC 61811-1, electronic component standards, relay type 5, relay testing, environmental standards, telecom relay applications, relay standardization.
Relations
- Effective Date
- 04-Nov-2025
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Frequently Asked Questions
EN 61811-1:2015/A2:2026 is a draft published by CLC. Its full title is "Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification". This standard covers: Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
EN 61811-1:2015/A2:2026 is classified under the following ICS (International Classification for Standards) categories: 29.120.70 - Relays. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 61811-1:2015/A2:2026 has the following relationships with other standards: It is inter standard links to EN 61811-1:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 61811-1:2015/A2:2026 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
Elektromehanski telekomunikacijski stikalni releji ocenjene kakovosti - 1. del:
Rodovna specifikacija in okvirna podrobna specifikacija - Dopolnilo A2
Amendment 2 - Electromechanical telecom elementary relays of assessed quality - Part
1: Generic specification and blank detail specification
Elektromechanische Telekom-Elementarrelais mit bewerteter Qualität - Teil 1:
Fachgrundspezifikation und Bauartspezifikation
Amendement 2 - Relais télécom électromagnétiques élémentaires soumis au régime
d'assurance qualité - Partie 1: Spécification générique et spécification particulière cadre
Ta slovenski standard je istoveten z: EN 61811-1:2015/prA2:2025
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
94/1175/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61811-1/AMD2 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-11-28 2026-02-20
SUPERSEDES DOCUMENTS:
94/1173/RR
IEC TC 94 : ELECTRICAL RELAYS
SECRETARIAT: SECRETARY:
Austria Mr Bernhard Spalt
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
THE CENELEC MEMBERS ARE INVITED TO VOTE THROUGH
THE CENELEC ONLINE VOTING SYSTEM.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the
final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Amendment 2 - Electromechanical telecom elementary relays of assessed quality - Part 1:
Generic specification and blank detail specification
PROPOSED STABILITY DATE: 2027
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
IEC CDV 61811-1/AMD2 © IEC 2025
1 INTERNATIONAL ELECTROTECHNICAL COMMISSION
2 __________
4 IEC 61811-1
5 Edition 2.0 2015-01
7 Electromechanical telecom elementary relays of assessed quality –
9 Part 1: Generic specification and blank detail specification
14 3 Terms and definitions
16 3.5 Relay construction types
17 Add 3.5.6 after 3.5.5
19 3.5.6
20 type 5
21 two change-over contacts, 9,1 mm×4,9 mm (max.) base
24 Annex B Characteristic values of the relay
26 Table B.1 - Dielectric test voltages
27 Replace the existing table by the following new table:
29 Table B.1 – Dielectric test voltages
Dielectric test
Va.c. min.
Type 0 Type 1 Type 2 Type 3 Type 4 type 5
Opened contact circuits 500 750 500 750 750 750
Between adjacent contact circuits 500 750 750 750 750 1 000
Coil to contact circuits 1 000 1 000 1 000 1 000 1 500 1 500
Between separated windings (if
applicable)
33 Table B.2 - Impulse test voltages
34 Replace the existing table by the following new table:
36 Table B.2 – Impulse test voltages
Impulse voltage test
V min. – pulse shape
Type 0 Type 1 Type 2 Type 3 Type 4 type 5
750V - 1 000V - 750V - 1 000V - 1 000V - 1 500V -
Opened contact circuits
10/700μs 10/700μs 10/700μs 10/700μs 10/700μs 10/700μs
750V - 1 000V - 1 000V - 1 000V - 1 500V - 1 500V -
Between adjacent contact circuits
10/700μs 10/700μs 10/700μs 10/700μs 10/700μs 10/700μs
1 500V - 1 500V - 1 500V - 2 000V - 2 500V - 2 500V -
Coil to contact circuits
1.2/50μs 1.2/50μs 1.2/50μs 1.2/50
...