EN 61811-1:2015/prA2:2025
(Amendment)Amendment 2 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
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
Elektromehanski telekomunikacijski stikalni releji ocenjene kakovosti - 1. del: Rodovna specifikacija in okvirna podrobna specifikacija - Dopolnilo A2
General Information
- Status
- Not Published
- Publication Date
- 20-Jun-2027
- Technical Committee
- CLC/SR 94 - All-or-nothing electrical relays
- Current Stage
- 4020 - Enquiry circulated - Enquiry
- Start Date
- 28-Nov-2025
- Due Date
- 22-May-2026
- Completion Date
- 28-Nov-2025
Relations
- Effective Date
- 04-Nov-2025
Overview
EN 61811-1:2015/prA2:2025 (Amendment 2) establishes updated requirements for electromechanical telecom elementary relays of assessed quality. Developed by CLC and based on IEC standards, this amendment addresses generic specifications and provides a blank detail specification for use across telecommunications and related sectors. The standard is fundamental for manufacturers, engineers, and quality assurance teams who design, specify, or test relays used in telecom and broader industrial applications.
Key Topics
- Updated Definitions: Introduction of new relay construction types, such as "Type 5" with specific form factors, ensuring precise classification and clearer guidance for selection and application.
- Performance Parameters: Revised dielectric and impulse voltage testing tables set minimum safety and reliability benchmarks for relay operation under various conditions.
- Specification Clarity: Enhanced detail specification templates, including front page layouts and expanded construction examples, facilitate uniform documentation across products and suppliers.
- Component Data: Comprehensive relay data parameters now include form factors, mounting options (through-hole and surface mount), contact configurations, power ratings, and climatic categories adhering to IEC 60068-1 requirements.
Applications
Relays standardized under EN 61811-1:2015/prA2:2025 are essential components in:
Telecommunications
Providing reliable switching and signal routing in network infrastructure, exchanges, and data transmission equipment.Industrial Control Systems
Offering dependable switching functionality for automation, control panels, and monitoring systems.PCB Assembly and Electronics Manufacturing
Supporting both traditional and surface-mount techniques, enabling widespread use in compact, high-density electronic assemblies.General Switching and Power Control
Used wherever electrical separation and signal switching are necessary, leveraging configurations such as dual change-over contacts and varied base sizes for application flexibility.
Practical value:
Implementing this amendment ensures that products meet internationally recognized quality and performance standards, easing market access and reducing compliance risks. Detailed and consistent specifications help manufacturers streamline production, support quality management, and facilitate procurement decisions for buyers specifying telecommunication relays.
Related Standards
- IEC 61811-1: Core specification for electromechanical telecom relays, forming the base for this amendment.
- IEC 61810-1 / IEC 61810-2 / IEC 61810-7: Additional standards covering general and special characteristics of electromechanical relays, referenced in documentation and specification forms.
- IEC 60068-1: Specifies climatic testing categories, guiding design for durability and environmental performance.
- EN 61811-1:2015: The original standard superseded and amended by the current document.
Keywords:
electromechanical relays, telecom relays, relay specification, relay testing, dielectric voltage, impulse voltage, CLC standard, IEC relay standards, industrial relays, PCB relays, surface mount relay, change-over contact, detail specification.
Conclusion
EN 61811-1:2015/prA2:2025 serves as a critical update for organizations involved in the design, specification, and quality assurance of electromechanical telecom relays. By adopting these standards, stakeholders ensure improved interoperability, product reliability, and compliance with European and international requirements.
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Frequently Asked Questions
EN 61811-1:2015/prA2:2025 is a draft published by CLC. Its full title is "Amendment 2 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification". This standard covers: Amendment 2 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
Amendment 2 - Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification and blank detail specification
EN 61811-1:2015/prA2:2025 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/prA2:2025 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/prA2:2025 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
...
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