SIST EN IEC 61300-2-33:2026
(Main)Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-33: Tests - Assembly and disassembly of fibre optic mechanical splices, fibre management systems and protective housings (IEC 61300-2-33:2026)
- Abstract
IEC 61300-2-33:2026 evaluates the behaviour of a fibre optic mechanical splice, a fibre management system, a protective housing or a hardened connector after being subjected to a specified number of assembly and disassembly operations.
The test procedures described in this document simulate conditions that the component can encounter during its service lifetime to check the following performance characteristics:
- capability of an optical mechanical splice to be reinstalled after being disassembled;
- capability to reintroduce fibre management systems and protective housings, accessing fibres and optical components and making reconfigurations without disturbing transmission in adjacent fibre circuits;
- sealing performance of the protective housing after frequent opening and closing operations;
- sealing performance of the hardened connector after frequent mating and demating operations.
This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) update of the terms and definitions according to IEC 61753-1:2018 and IEC 61756‑1:2019;
b) update of the test severities according to the new edition of IEC 61753-1:2018;
c) addition of procedure D to verify the sealing performance after frequent mating and demating of a hardened connector.
- Status
- Published
- Public Enquiry End Date
- 31-Jul-2025
- Publication Date
- 15-Jun-2026
- Technical Committee
- MOC - Mobile Communications
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 02-Jun-2026
- Due Date
- 07-Aug-2026
- Completion Date
- 16-Jun-2026
SIST EN IEC 61300-2-33:2026 is the Slovenian adoption of IEC 61300-2-33:2026 for fibre optic interconnecting devices and passive components. It specifies test procedures for repeated assembly and disassembly of fibre optic mechanical splices, fibre management systems, protective housings and hardened connectors, so users can check reinstallation, optical stability and sealing after service-like handling.
What does SIST EN IEC 61300-2-33:2026 specify?
SIST EN IEC 61300-2-33:2026 sets out how to evaluate a component after a specified number of assembly and disassembly operations. The document is aimed at simulating conditions that can occur during service life, so the tests focus on whether the component still works after repeated access, reconfiguration or sealing operations.
The document is organized into scope, normative references, terms and definitions, general description, procedures, severity, reporting details, and one informative annex.
| Annex | What it covers |
|---|---|
| Annex A | Installation and intervention procedure for protective housing - optical stability |
What are the key requirements of SIST EN IEC 61300-2-33:2026?
Common test conditions and setup
SIST EN IEC 61300-2-33:2026 requires assembly and disassembly to follow the manufacturer’s instructions, using the specified tools and consumables. The work is carried out at standard atmospheric conditions according to IEC 61300-1. In practice, this means the test should reflect the intended product handling, not an improvised setup.
Clause 5 also ties the test to the relevant IEC 61753 series performance standards or IEC 62005 series reliability documents. That matters because the pass/fail checks come from the product’s own performance or reliability target.
Procedure A to D
Clause 5 describes four procedures.
- Procedure A checks whether an optical mechanical splice can be reinstalled after disassembly.
- Procedure B checks optical stability when fibre management systems and protective housings are opened, accessed and reconfigured.
- Procedure C checks sealing performance after frequent opening and closing of a protective housing.
- Procedure D checks sealing performance after frequent mating and demating of a hardened connector.
For a reader, this means the standard covers both mechanical rework and environmental sealing, not just one or the other. Procedure B also includes measurement of transient loss according to IEC 61300-3-28 during intervention.
Ageing and recovery between cycles
Clause 5.6 allows an ageing process between assembly and disassembly operations when the related IEC 61753 series performance standard or IEC 62005 series reliability document calls for it. The text explains that the ageing step is intended to speed up creep in polymeric materials in the alignment or sealing area and to help identify design failures, manufacturing defects and ageing effects.
The ageing conditions are linked to performance categories from IEC 61753-1. After ageing, the sample must recover at standard atmospheric conditions for a defined time before the next step. In practice, that tells a lab how long to condition the sample between cycles and when to resume measurements.
Severity and repetition
Clause 6 sets severity by the number of assembly-disassembly cycles in Table 2. Procedures A, C and D use repeated cycles, with ageing cycles between them as specified in the table. Procedure B has no cycles, so it has no severity requirement.
That means users need to define the operating environment and the repetition level before testing starts. The number of cycles is part of the test severity, so it should be chosen to match the product category being qualified.
Reporting
Clause 7 lists what the test report shall record, including the test conditions, the procedure used, the recovery procedure, the severity, initial and final examinations and measurements, pass/fail criteria, and any deviations from the manufacturer’s instructions or from the procedure itself. This is the information needed to make the result traceable and comparable.
What terms does SIST EN IEC 61300-2-33:2026 define?
- Fibre optic mechanical splice - A splice that is tested here for reinstallation after it has been disassembled.
- Fibre management system - An arrangement for accessing, routing and reconfiguring fibres and optical components.
- Protective housing - An enclosure whose sealing and reassembly are checked after repeated opening and closing.
- Hardened connector - A connector tested for sealing performance after repeated mating and demating.
- Transient loss - The optical loss measured during intervention steps in Procedure B and in Annex A.
- Standard atmospheric conditions - The ambient conditions used for assembly, disassembly and recovery in accordance with IEC 61300-1.
- Performance categories - The product categories from IEC 61753-1 that are used to select ageing conditions and severity.
Who uses SIST EN IEC 61300-2-33:2026?
SIST EN IEC 61300-2-33:2026 is used by manufacturers, test laboratories, and quality or reliability engineers working with fibre optic interconnecting devices and passive components. It is also relevant to teams writing or applying IEC 61753 series performance standards and IEC 62005 series reliability documents, because those documents refer to this test method.
In practice, users apply it when they need evidence that a splice can be reinstalled, a housing can be reopened and reconfigured, or a hardened connector can keep sealing after repeated service operations.
What changed in SIST EN IEC 61300-2-33:2026 from the previous edition?
This fourth edition replaces the third edition published in 2012. The stated technical changes are:
- terms and definitions were updated according to IEC 61753-1:2018 and IEC 61756-1:2019
- test severities were updated according to the new edition of IEC 61753-1:2018
- Procedure D was added to verify sealing performance after frequent mating and demating of a hardened connector
Which standards are used with SIST EN IEC 61300-2-33:2026?
- IEC 61300-1 - general guidance and standard atmospheric conditions
- IEC 61300-2-22 - temperature-change test and ageing conditions referenced in Table 1
- IEC 61300-3-28 - transient loss measurement during intervention
- IEC 61753 series - performance standards that define the related product requirements
- IEC 61753-1 - general guidance and the performance categories used for ageing and severity
- IEC 61753-131 series - performance standard for single-mode mechanical fibre splice, relevant to Procedure A
- IEC 62005 series - reliability documents used alongside the procedures
- IEC 61756-1 - source of terms and definitions used in Clause 3
What does the SIST EN IEC 61300-2-33:2026 document contain?
The document contains four test procedures, one ageing procedure, one severity table and one informative annex. Table 1 gives ageing conditions between cycles, while Table 2 sets the number of assembly-disassembly cycles for the different operating environments. Annex A gives a worked example of how to simulate protective housing intervention while measuring transient loss.
Clause 7 is especially useful for test planning because it lists the information that must be specified and reported. That helps labs, suppliers and customers align on exactly how the test was run and how the result should be read.
Relations
- Effective Date
- 01-Jul-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 02-Jun-2026
- Effective Date
- 02-Jun-2026
- Effective Date
- 02-Jun-2026
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Frequently Asked Questions
SIST EN IEC 61300-2-33:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-33: Tests - Assembly and disassembly of fibre optic mechanical splices, fibre management systems and protective housings (IEC 61300-2-33:2026)". This standard covers: IEC 61300-2-33:2026 evaluates the behaviour of a fibre optic mechanical splice, a fibre management system, a protective housing or a hardened connector after being subjected to a specified number of assembly and disassembly operations. The test procedures described in this document simulate conditions that the component can encounter during its service lifetime to check the following performance characteristics: - capability of an optical mechanical splice to be reinstalled after being disassembled; - capability to reintroduce fibre management systems and protective housings, accessing fibres and optical components and making reconfigurations without disturbing transmission in adjacent fibre circuits; - sealing performance of the protective housing after frequent opening and closing operations; - sealing performance of the hardened connector after frequent mating and demating operations. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) update of the terms and definitions according to IEC 61753-1:2018 and IEC 61756‑1:2019; b) update of the test severities according to the new edition of IEC 61753-1:2018; c) addition of procedure D to verify the sealing performance after frequent mating and demating of a hardened connector.
IEC 61300-2-33:2026 evaluates the behaviour of a fibre optic mechanical splice, a fibre management system, a protective housing or a hardened connector after being subjected to a specified number of assembly and disassembly operations. The test procedures described in this document simulate conditions that the component can encounter during its service lifetime to check the following performance characteristics: - capability of an optical mechanical splice to be reinstalled after being disassembled; - capability to reintroduce fibre management systems and protective housings, accessing fibres and optical components and making reconfigurations without disturbing transmission in adjacent fibre circuits; - sealing performance of the protective housing after frequent opening and closing operations; - sealing performance of the hardened connector after frequent mating and demating operations. This fourth edition cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) update of the terms and definitions according to IEC 61753-1:2018 and IEC 61756‑1:2019; b) update of the test severities according to the new edition of IEC 61753-1:2018; c) addition of procedure D to verify the sealing performance after frequent mating and demating of a hardened connector.
SIST EN IEC 61300-2-33:2026 is classified under the following ICS (International Classification for Standards) categories: 33.180.20 - Fibre optic interconnecting devices. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN IEC 61300-2-33:2026 has the following relationships with other standards: It is inter standard links to SIST EN 61300-2-33:2012, SIST EN 61300-3-28:2012, SIST EN IEC 61753-1:2019, SIST EN 62005-3:2002, SIST EN 62005-2:2002, SIST EN 62005-4:2001, SIST EN IEC 61753-131-03:2022, SIST EN IEC 61300-1:2022, SIST EN 62005-7:2005, SIST EN 62005-1:2002, SIST EN IEC 61300-2-22:2024, SIST EN IEC 61753-1:2019/A1:2020, SIST EN 50411-2-5:2009, SIST EN 50411-2:2008, SIST EN IEC 61757-8-1:2026. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN IEC 61300-2-33:2026 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-julij-2026
Nadomešča:
SIST EN 61300-2-33:2012
Optični spojni elementi in pasivne komponente - Osnovni preskusni in merilni
postopki - 2-33. del: Preskušanje - Sestavljanje in razstavljanje optomehanskih
spojnic, konzol za upravljanje optičnih sistemov in zaščitnih ohišij (IEC 61300-2-
33:2026)
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 2-33: Tests - Assembly and disassembly of fibre optic
mechanical splices, fibre management systems and protective housings (IEC 61300-2-
33:2026)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und
Messverfahren - Teil 2-33: Prüfungen - Montage und Demontage von mechanischen
LWL-Spleißen, Fasermanagementsystemen, Schutzgehäuse und robuste
Steckverbinder (IEC 61300-2-33:2026)
Dispositifs d'interconnexion et composants passifs à fibres optiques - Méthodes
fondamentales d'essais et de mesures - Partie 2-33: Essais - Montage et démontage des
épissures mécaniques de fibres optiques, des systèmes de gestion des fibres et des
boîtiers (IEC 61300-2-33:2026)
Ta slovenski standard je istoveten z: EN IEC 61300-2-33:2026
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61300-2-33
NORME EUROPÉENNE
EUROPÄISCHE NORM May 2026
ICS 33.180.20 Supersedes EN 61300-2-33:2012
English Version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures - Part 2-33: Tests -
Assembly and disassembly of fibre optic mechanical splices,
fibre management systems, protective housings and hardened
connectors
(IEC 61300-2-33:2026)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive
fibroniques - Procédures fondamentales d'essais et de Bauteile - Grundlegende Prüf- und Messverfahren - Teil 2-
mesures - Partie 2-33: Essais - Montage et démontage des 33: Prüfungen - Montage und Demontage von
épissures mécaniques fibroniques, des systèmes de mechanischen LWL-Spleißen, Fasermanagementsystemen,
gestion des fibres, des boîtiers de protection et des Schutzgehäuse und robuste Steckverbinder
connecteurs renforcés (IEC 61300-2-33:2026)
(IEC 61300-2-33:2026)
This European Standard was approved by CENELEC on 2026-05-13. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists 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.
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.
Ref. No. EN IEC 61300-2-33:2026 E
European foreword
The text of document 86B/5175/FDIS, future edition 4 of IEC 61300-2-33, prepared by SC 86B "Fibre
optic interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 61300-2-33:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-05-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-05-31
document have to be withdrawn
This document supersedes EN 61300-2-33:2012 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61300-2-33:2026 was approved by CENELEC as a
European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 61300-1 - Fibre optic interconnecting devices and EN IEC 61300-1 -
passive components - Basic test and
measurement procedures - Part 1: General
and guidance
IEC 61300-2-22 - Fibre optic interconnecting devices and EN IEC 61300-2-22 -
passive components - Basic test and
measurement procedures - Part 2-22:
Tests - Change of temperature
IEC 61300-3-28 - Fibre optic interconnecting devices and EN 61300-3-28 -
passive components - Basic test and
measurement procedures - Part 3-28:
Examinations and measurements -
Transient loss
IEC 61753 series Fibre optic interconnecting devices and EN IEC 61753 series
passive components - Performance
standard
IEC 61753-1 - Fibre optic interconnecting devices and EN IEC 61753-1 -
passive components - Performance
standard - Part 1: General and guidance
IEC 61753-131 series Fibre optic interconnecting devices and EN IEC 61753-131 series
passive components - Performance
standard: Single-mode mechanical fibre
splice
IEC 62005 series Reliability of fibre optic interconnecting EN 62005 series
devices and passive components
IEC 61300-2-33 ®
Edition 4.0 2026-04
INTERNATIONAL
STANDARD
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures -
Part 2-33: Tests - Assembly and disassembly of fibre optic mechanical splices,
fibre management systems, protective housings and hardened connectors
ICS 33.180.20 ISBN 978-2-8327-1171-2
IEC 61300-2-33:2026-04(en)
IEC 61300-2-33:2026 © IEC 2026
CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 General description . 5
5 Procedure . 5
5.1 Preparation of the DUT . 5
5.2 Procedure A: Re-installation of an optical mechanical splice after
disassembly . 5
5.3 Procedure B: Optical stability during reconfiguration of fibre management
systems and protective housings . 6
5.4 Procedure C: Sealing performance after frequent opening and closing of the
protective housing . 6
5.5 Procedure D: Verification of the sealing performance after frequent mating
and demating of a hardened connector . 6
5.6 Ageing procedure . 7
6 Severity . 8
7 Details to be specified and reported. 9
Annex A (informative) Installation and intervention procedure for protective housing –
Optical stability . 10
Table 1 – Ageing procedure between two cycles of assembly and disassembly of fibre
optic mechanical splices, protective housings and hardened connectors . 7
Table 2 – Number of assembly-disassembly cycles for different operating
environments . 8
IEC 61300-2-33:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures -
Part 2-33: Tests - Assembly and disassembly of fibre optic
mechanical splices, fibre management systems,
protective housings and hardened connectors
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 61300-2-33 has been prepared by subcommittee 86B: Fibre optic interconnecting devices
and passive components, of IEC technical committee 86: Fibre optics. It is an International
Standard.
This fourth edition cancels and replaces the third edition published in 2012. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) update of the terms and definitions according to IEC 61753-1:2018 and IEC 61756-1:2019;
b) update of the test severities according to the new edition of IEC 61753-1:2018;
IEC 61300-2-33:2026 © IEC 2026
c) addition of procedure D to verify the sealing performance after frequent mating and
demating of a hardened connector.
The text of this International Standard is based on the following documents:
Draft Report on voting
86B/5175/FDIS 86B/5201/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
The list of all parts of IEC 61300 series, published under the general title, Fibre optic
interconnecting devices and passive components - Basic test and measurement procedures,
can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Pa
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