SIST 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
- Not Published
- Public Enquiry End Date
- 15-Feb-2026
- Technical Committee
- ISS EIT.ERE - All-or-nothing electrical relays
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 17-Sep-2026
- Due Date
- 22-Nov-2026
Overview
SIST EN 61811-1:2015/A2:2026 is a Slovenian amendment to the international standard for electromechanical telecom elementary relays of assessed quality, specifically focusing on the generic specification and blank detail specification. Developed by the Slovenian Institute for Standardization (SIST), this document aligns with EN 61811-1:2015 and applies to relays used in telecommunications and various industrial applications. This amendment introduces updates to relay construction types, electrical testing requirements, and specification templates, supporting product quality, performance, and safety in relay components.
Key Topics
Relay Construction Types
This amendment details an additional relay construction type (type 5):- Two change-over contacts
- 9.1 mm × 4.9 mm maximum base
- Designed for PCBs with options for both through-hole and surface-mount technology
Electrical Testing Requirements
Updates enhance the specification of dielectric and impulse test voltages for all relay types, supporting electrical safety and reliability.- Dielectric test voltages: clearly defined for opened/adjacent contact circuits and coil-to-contact circuits
- Impulse test voltages: specified with typical pulse shapes, contributing to robust relay performance
Specification Templates
The structure of the blank detail and front page specification examples is updated for consistency and clarity.- Ensures uniformity in product datasheets and qualification documentation
Performance Parameters
Outlines relevant operational and physical attributes, including:- Rated contact voltage and current
- Contact configuration and power ratings
- Component climatic category in accordance with IEC 60068-1
Applications
Electromechanical relays standardized by SIST EN 61811-1:2015/A2:2026 are highly adaptable and widely used in:
Telecommunications Equipment
- Switching, signaling, and routing in telecom networks
- Reliable operation under varying electrical and environmental conditions
Industrial Automation
- Control systems requiring robust and reliable relay operations
- Switching functions and circuit isolation in manufacturing environments
Printed Circuit Board (PCB) Design
- Compact dual-in-line relays facilitate flexible integration
- Suitable for both surface-mount and through-hole mounting, supporting modern PCB assembly techniques
General Control and Switching
- Applicable in a range of systems beyond telecoms, such as instrumentation, monitoring systems, and remote controls
Related Standards
- IEC 61811-1: Electromechanical telecom elementary relays of assessed quality - Part 1: Generic specification
- IEC 61810 Series: General standards for electromechanical relays
- IEC 60068-1: Environmental testing - General and guidance
- EN 61811-1: European adoption of IEC 61811-1
These related standards ensure coordinated requirements for reliability, testing, and qualification, fostering compatibility and safety in relay applications.
Summary:
SIST EN 61811-1:2015/A2:2026 establishes updated specifications and testing criteria for telecom-grade electromechanical relays, ensuring product quality, regulatory compliance, and suitability for both telecommunications and broader industrial applications. Adhering to this standard supports manufacturers and system integrators in delivering reliable, safe, and interoperable relay-based solutions.
Relations
- Effective Date
- 04-Nov-2025
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Frequently Asked Questions
SIST EN 61811-1:2015/A2:2026 is a draft published by the Slovenian Institute for Standardization (SIST). 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
SIST 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.
SIST EN 61811-1:2015/A2:2026 has the following relationships with other standards: It is inter standard links to SIST EN 61811-1:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST 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
SIST EN 61811-1:2015/oprA2:2026
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
SIST EN 61811-1:2015/oprA2:2026 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 61811-1:2015/oprA2:2026
SIST EN 61811-1:2015/oprA2:2026
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.
SIST EN 61811-1:2015/oprA2:2026
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
...