EN IEC 61754-6:2022/FprA1:2026

• Status: Not Published
• Publication Date: 20-Dec-2026
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: CLC/TC 86BXA - Fibre optic interconnect, passive and connectorised components
• Current Stage: 5060 - Voting results sent to TC, SR - Formal Approval
• Start Date: 18-Sep-2026
• Completion Date: 18-Sep-2026
• Ref Project: SIST EN IEC 61754-6:2022/kFprA1:2026 - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 6: Type MU connector family

• Amends: EN IEC 61754-6:2022 - Fibre optic interconnecting devices and passive components - Fibre optic connector interfaces - Part 6: Type MU connector family
• Effective Date: 14-Jan-2025

Overview

EN IEC 61754-6:2022/FprA1:2026 is an amendment to the international standard defining fibre optic interconnecting devices and passive components, specifically focusing on the Type MU connector family. Issued by the European Committee for Electrotechnical Standardization (CLC), this amendment introduces updates to technical references, connector grades, and key design dimensions. It serves to harmonize requirements for fibre optic connector interfaces, enabling greater compatibility and performance in fibre optic networks.

Key Topics

• MU Connector Family: The standard details updates relevant to the MU fibre optic connector interface, a compact, high-density connector type widely used in telecommunication applications.
• Updated Technical References: References have been aligned with the IEC 61755-3 and IEC 63267-3 series, reflecting the latest requirements for single-mode and multimode fibre interfaces.
• Connector Grades: Several grades for simplex, duplex, and horizontal duplex plug connectors have been revised or referenced to current IEC series, improving clarity and global uniformity.
• Dimensional Adjustments: The amendment updates dimensions, tolerances, and references for key connector parameters, essential for ensuring reliable mechanical and optical performance.
• Footnote and Figure Revisions: Changes include updated footnotes, replacement of existing figures, and corrections to terminology, increasing the document’s consistency and usability.

Applications

Implementing EN IEC 61754-6:2022/FprA1:2026 delivers tangible benefits across various sectors:

• Telecommunications: Network infrastructure providers rely on MU connectors for high-density patch panels, switches, and distribution frames. The standard guarantees interoperability and long-term performance for fibre optic links.
• Data Centers: The amendment’s harmonized requirements support rapid, error-free deployment and maintenance of high-speed optical interconnects in demanding environments.
• Industrial Networks: By standardizing interfaces and connector grades, manufacturers and integrators achieve greater compatibility, reducing assembly errors and downtime.
• Testing and Inspection: Updated measurement guidelines and reference updates assist labs and field engineers in assessing connector compliance, ensuring reliable network operation.

Organizations involved in design, manufacturing, and installation of fibre optic devices will benefit from adopting this amendment, achieving better product quality, simplified procurement, and easier cross-market deployment. The standard is particularly valuable for those prioritizing interchangeability and future-proofing of fibre network components.

Related Standards

EN IEC 61754-6:2022/FprA1:2026 aligns with and references several vital standards for fibre optic connectors:

• IEC 61755-3 Series: Connector optical interfaces for dispersion unshifted single-mode physically contacting fibres
• IEC 63267-3 Series: Connector interfaces for enhanced macro bend multimode fibres
• IEC 61300-3-22: Test methods for measuring ferrule compression forces
• IEC 61754 Series: Fibre optic connector interfaces (various types, including MU)
• IEC 63267-1: General requirements for optical connector grades

For organizations and professionals seeking to maintain cutting-edge, reliable, and compliant fibre optic networks, keeping abreast of EN IEC 61754-6:2022/FprA1:2026 and its related standards is essential for achieving optimal system performance, interoperability, and future scalability.

SLOVENSKI STANDARD
SIST EN IEC 61754-6:2022/oprA1:2025
01-december-2025
Optični spojni elementi in pasivne komponente - Vmesniki za optične konektorje -
6. del: Konektorska družina vrste MU - Dopolnilo A1
Fibre optic interconnecting devices and passive components - Fibre optic connector
interfaces - Part 6: Type MU connector family
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Steckgesichter von
Lichtwellenleiter-Steckverbindern - Teil 6: Steckverbinderfamilie der Bauart MU
Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces de
connecteurs fibroniques - Partie 6: Famille de connecteurs de type MU
Ta slovenski standard je istoveten z: EN IEC 61754-6:2022/prA1:2025
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
SIST EN IEC 61754-6:2022/oprA1:2025 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN IEC 61754-6:2022/oprA1:2025

SIST EN IEC 61754-6:2022/oprA1:2025
86B/5125/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61754-6/AMD1 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-10-17 2026-01-09
SUPERSEDES DOCUMENTS:
86B/4997/CD, 86B/5034A/CC
IEC SC 86B : FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
SECRETARIAT: SECRETARY:
Japan Mr Ryo Koyama
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 1 - Fibre optic interconnecting devices and passive components - Fibre optic
connector interfaces - Part 6: Type MU connector family

PROPOSED STABILITY DATE: 2032
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 IEC 61754-6:2022/oprA1:2025
IEC CDV 61754-6/AMD1 © IEC 2025
1 INTERNATIONAL ELECTROTECHNICAL COMMISSION
3 _____________
5 IEC 61754-6
6 Edition 3.0 2022-02
7 Fibre optic interconnecting devices and passive components – Fibre optic connector
8 interfaces - Part 6: Type MU connector family
9 AMENDMENT 1
10 2 Normative references
11 Add the following references:
12 IEC 61755-3 (all parts), Fibre optic interconnecting devices and passive components - Connector optical interfaces:
13 Connector parameters of dispersion unshifted single-mode physically contacting fibres
14 IEC 63267-3 (all parts), Fibre optic interconnecting devices and passive components – Connector optical interfaces
15 for enhanced macro bend multimode fibres: Connector parameters of physically contacting 50 µm core diameter
16 fibres
18 5 Interfaces
19 Table 5 – Dimensions of the simplex plug connector interface
20 In footnote b, replace “L, M and V” with “I, P, Q and R”.
22 Table 6 – Grade of the simplex plug connector
23 In the row for grade A, replace the content in the second and third column with “Grade not
24 specified at this time”.
25 In the rows for grades B to D, replace the content in the second and third column with “Refer to
26 IEC 61755-3 series”.
27 In the rows for grades B and C , replace the minimum and maximum values or the text with
m m
28 “Refer to IEC 63267-3 series”.
29 Delete note b “See IEC 61755-6-1 for guidance”.
31 Table 7 – Dimensions of the 4,5 mm duplex plug connector interface
32 In footnote b, replace “L, M and V” with “I, P, Q and R”.
SIST EN IEC 61754-6:2022/oprA1:2025
IEC CDV 61754-6/AMD1 © IEC 2025
35 Table 8 – Grade of the 4,5 mm duplex plug connector
36 In the row for grade A, replace the content in the second and third column with “Grade not
37 specified at this time”.
38 In the rows for grades B to D, replace the content in the second and third column with “Refer to
39 IEC 61755-3 series”.
40 In the rows for grades B and C , replace the minimum and maximum values or the text with
m m
41 “Refer to IEC 63267-3 series”.
42 Delete note b “See IEC 61755-6-1 for guidance”.
44 Table 11 – Pin gauge dimensions
45 In the last column, row LK, replace “grade N4 (0,2 μm radius)” with “Ra: ≤0.000 2”.
47 Table 17 – Grade of the plug connector
48 In the row for grade A, replace the content in the second and third column with “Grade not
49 specified at this time”.
50 In the rows for grades B to D, replace the content in the second and third column with “Refer to
51 IEC 61755-3 series”.
52 In the rows for grades B and C , replace the minimum and maximum values or the text with
m m
53 “Refer to IEC 63267-3 series”.
54 Delete note b “See IEC 61755-6-1 for guidance”.
56 Figure 8 – Sleeve holder int
...