IEC 61076-3-123:2019

IEC 61076-3-123 ®
Edition 1.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electrical and electronic equipment – Product requirements –
Part 3-123: Rectangular connectors – Detail specification for hybrid connectors
for industrial environments, for power supply and fibre optic data transmission,
with push-pull locking
Connecteurs pour équipements électriques et électroniques – Exigences de
produit –
Partie 3-123: Connecteurs rectangulaires – Spécification particulière relative aux
connecteurs hybrides dans des environnements industriels pour l’alimentation
et la transmission de données fibronique, avec verrouillage de type
pousser-tirer
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IEC 61076-3-123 ®
Edition 1.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Connectors for electrical and electronic equipment – Product requirements –

Part 3-123: Rectangular connectors – Detail specification for hybrid connectors

for industrial environments, for power supply and fibre optic data transmission,

with push-pull locking
Connecteurs pour équipements électriques et électroniques – Exigences de

produit –
Partie 3-123: Connecteurs rectangulaires – Spécification particulière relative aux

connecteurs hybrides dans des environnements industriels pour l’alimentation

et la transmission de données fibronique, avec verrouillage de type

pousser-tirer
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.220.10 ISBN 978-2-8322-7351-7

– 2 – IEC 61076-3-123:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions, and abbreviated terms . 12
3.1 Terms and definitions . 12
3.2 Abbreviated terms . 13
4 Technical information . 13
4.1 Systems of levels . 13
4.1.1 Performance levels . 13
4.1.2 Compatibility levels, according to IEC 61076-1:2006. 13
4.2 Classification into climatic categories . 13
4.3 Clearance and creepage distances . 14
4.4 Current-carrying capacity . 14
4.5 Marking . 14
5 Dimensional information . 14
5.1 Common features. 14
5.2 Reference system . 14
5.3 Engagement (mating) information . 14
5.3.1 Engaging (mating) direction . 14
5.3.2 Contact levels and sequencing . 15
5.3.3 Perpendicular to the engaging (mating) direction . 15
5.3.4 Inclination . 15
5.4 Fixed connectors . 15
5.4.1 Fixed connectors – A-coding . 15
5.4.2 Fixed connectors – B-coding . 18
5.5 Free connectors . 19
5.5.1 Free connectors – A – coding . 19
5.5.2 Free connectors – B-coding . 21
5.6 Accessories . 22
5.7 Mounting information for connectors . 22
5.8 Gauges . 22
5.8.1 Sizing gauges and retention force gauges . 22
5.8.2 Mechanical function, engaging/separating/insertion/withdrawal force
gauges . 23
5.8.3 Probes . 23
5.8.4 Contact resistance gauge . 23
5.8.5 Test panel (for voltage proof test) . 23
5.8.6 Test panel (for EMC/crosstalk, etc.) . 23
6 Characteristics . 23
6.1 General . 23
6.2 Pin assignment and other definitions . 24
6.3 Classification into climatic categories . 24
6.4 Electrical characteristics . 24
6.4.1 Creepage and clearance distances . 24
6.4.2 Voltage proof . 24

6.4.3 Current-carrying capacity . 24
6.4.4 Contact and shield resistance . 25
6.4.5 Insulation resistance . 25
6.4.6 Impedance . 25
6.4.7 Transmission characteristics . 25
6.5 Mechanical characteristics . 25
6.5.1 Mechanical operation . 25
6.5.2 Effectiveness of connector coupling devices . 26
6.5.3 Engaging and separating forces (or insertion and withdrawal forces) . 26
6.5.4 Contact retention in insert . 26
6.5.5 Polarizing and coding method . 26
6.6 Other characteristics . 26
6.6.1 Vibration (method half-sine) . 26
6.6.2 Shock (method half-sine) . 27
6.6.3 Degree of protection provided by enclosures (IP-code) . 28
6.6.4 Screen and shielding properties . 28
6.6.5 Static load test . 28
6.7 Environmental aspects . 28
6.7.1 Marking of insulation material (plastics) . 28
6.7.2 Design/use of material . 28
7 Test schedule . 28
7.1 General . 28
7.1.1 Overview . 28
7.1.2 Climatic category . 28
7.1.3 Creepage and clearance distances . 29
7.1.4 Arrangement for contact resistance measurement . 29
7.1.5 Arrangement for dynamic stress tests . 30
7.1.6 Arrangement for testing static load, axial . 30
7.1.7 Wiring of specimens . 30
7.2 Test schedules . 31
7.2.1 Basic (minimum) test schedule, see Table 12 . 31
7.2.2 Full test schedule . 31
7.3 Test procedures and measuring methods . 43
7.4 Pre-conditioning . 43
7.5 Wiring and mounting of specimens . 43
7.5.1 Wiring . 43
7.5.2 Mounting . 44

Figure 1 – Section showing mating direction . 14
Figure 2 – Fixed connector with female contacts – A-coding . 16
Figure 3 – Fixed connector with female contacts – B-coding . 18
Figure 4 – Free connector with male contacts – A-coding . 19
Figure 5 – Free connector with male contacts – B-coding . 22
Figure 6 – Gauge dimensions . 23
Figure 7 – Vibration and shock test arrangement . 27
Figure 8 – Contact resistance arrangement . 30

– 4 – IEC 61076-3-123:2019 © IEC 2019
Table 1 – Climatic category. 13
Table 2 – Dimensions of fixed connector – A-coding . 17
Table 3 – Dimensions of fixed connector – B-coding . 18
Table 4 – Dimensions of free connector – A-coding . 20
Table 5 – Dimensions of free connector – B-coding . 22
Table 6 – Gauge dimensions. 23
Table 7 – Ratings of connectors . 24
Table 8 – Current-carrying capacity . 25
Table 9 – Number of mechanical operations . 26
Table 10 – Total insertion force . 26
Table 11 – Rated voltage – Rated impulse voltage – Pollution degree . 29
Table 12 – Basic tests . 31
Table 13 – Number of test specimens and contacts . 32
Table 14 – Test group P . 32
Table 15 – Test group AP . 33
Table 16 – Test group BP . 35
Table 17 – Test group CP . 36
Table 18 – Test group DP . 37
Table 19 – Test group EP . 38
Table 20 –Test group FP . 39
Table 21 – Test group GP . 40
Table 22 – Test group JP . 41
Table 23 – Test group KP . 41

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 3-123: Rectangular connectors – Detail specification for hybrid
connectors for industrial environments, for power supply and fibre optic
data transmission, with push-pull locking

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61076-3-123 has been prepared by subcommittee 48B: Electrical
connectors, of IEC technical committee 48: Electrical connectors and mechanical structures for
electrical and electronic equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
48B/2742/FDIS 48B/2753/RVD
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 6 – IEC 61076-3-123:2019 © IEC 2019
A list of all parts in the IEC 61076 series, published under the general title Connectors for
electrical and electronic equipment – Product requirements, can be found on the IEC website.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
IEC SC 48B – Electrical connectors IEC 61076-3-123 Ed.1
Specification available from:
IEC General secretariat
or from the addresses shown on the inside cover.
DETAIL SPECIFICATION in accordance with IEC 61076-1
Rectangular connectors
Detail specification for
hybrid connectors for
industrial environments,
for power supply and
fibre optic data
transmission, with push-
pull locking
Male and female
connectors
Male and female contacts
Optical ferrules and
adaptors
Rewirable –
Non-rewirable
Free cable connectors
Straight and right angle
connectors
Fixed connectors
Flange mounting
Single hole mounting
– 8 – IEC 61076-3-123:2019 © IEC 2019
CONNECTORS FOR ELECTRICAL AND ELECTRONIC EQUIPMENT –
PRODUCT REQUIREMENTS –
Part 3-123: Rectangular connectors – Detail specification for hybrid
connectors for industrial environments, for power supply and fibre optic
data transmission, with push-pull locking

1 Scope
This part of IEC 61076 covers hybrid rectangular connectors with a 3 poles 16 A electric portion
for power supply and a duplex fibre optic connector type LC portion for data transmission. These
connectors consist of fixed and free connectors, either rewirable or non-rewirable (for both
portions) and use the rectangular push-pull housing described in IEC 61076-3-117 with
IP65/IP67 degree of protection, for harsh applications. The mating dimensions of such housings
allow fulfilling the performance class Category I according to IEC 61753-1-3 in regards to the
fibre optic portion of the connector with the exception of the operating temperature range which
is –25 °C/+70 °C.
The electric portion may have different rated insulation voltages. Male connectors have
3 electric round contacts Ø1,6 mm, with 16 A rated current.
NOTE Only the phase/neutral contacts are loaded upon current-carrying capacity test of 4.4 and 6.4.3 and electrical
load and temperature test in 7.2.2.6 (DP2) and 7.2.2.12 (KP5)
The fibre optic portion provides data transmission by using the common mating configurations
for all variants of the type LC duplex fibre optic connectors as defined in IEC 61754-20, for
dedicated fibre types and fibre termination technology covered therein.
The different codings provided by this document prevent the mating of accordingly coded male
or female connectors to any other similarly sized interfaces covered by other standards and the
cross-mating between the different codings provided by this document.
2 Normative references
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.
IEC 60050-581:2008, International Electrotechnical Vocabulary – Chapter 581: Electro-
mechanical components for electronic equipment
IEC 60068-1, Environmental testing – Part 1: General and guidance
IEC 60068-2-30, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
(12 h + 12 h cycle)
IEC 60352-1:1997, Solderless connections – Part 1: Wrapped connections – General
requirements, test methods and practical guidance
IEC 60352-2:2006, Solderless connections – Part 2: Crimped connections – General
requirements, test methods and practical guidance

IEC 60352-3:1993, Solderless connections – Part 3: Solderless accessible insulation
displacement connections – General requirements, test methods and practical guidance
IEC 60352-4:1994, Solderless connections – Part 4: Solderless non-accessible insulation
displacement connections – General requirements, test methods and practical guidance
IEC 60352-5:2012, Solderless connections – Part 5: Press-in connections – General
requirements, test methods and practical guidance
IEC 60352-6:1997, Solderless connections – Part 6: Insulation piercing connections – General
requirements, test methods and practical guidance
IEC 60352-7:2002, Solderless connections – Part 7: Spring clamp connections – General
requirements, test methods and practical guidance
IEC 60352-8:2011, Solderless connections – Part 8: Compression mount connections – General
requirements, test methods and practical guidance
IEC 60512-1-1, Connectors for electronic equipment – Tests and measurements – Part 1-1:
General examination – Test 1a: Visual examination
IEC 60512-1-2:2002, Connectors for electronic equipment – Tests and measurements –
Part 1-2: General examination – Test 1b: Examination of dimension and mass
IEC 60512-2-1:2002, Connectors for electronic equipment – Tests and measurements –
Part 2-1: Electrical continuity and contact resistance tests – Test 2a: Contact resistance –
Millivolt level method
IEC 60512-2-2, Connectors for electronic equipment – Tests and measurements – Part 2-2:
Electrical continuity and contact resistance tests – Test 2b: Contact resistance – Specified test
current method
IEC 60512-2-5, Connectors for electronic equipment – Tests and measurements – Part 2-5:
Electrical continuity and contact resistance tests – Test 2e: Contact disturbance
IEC 60512-3-1:2002, Connectors for electronic equipment – Tests and measurements –
Part 3-1: Insulation tests – Test 3a: Insulation resistance
IEC 60512-4-1:2003, Connectors for electronic equipment – Tests and measurements –
Part 4-1: Voltage stress tests – Test 4a: Voltage proof
IEC 60512-5-2:2002, Connectors for electronic equipment – Tests and measurements –
Part 5-2: Current-carrying capacity tests – Test 5b: Current-temperature derating
IEC 60512-6-3:2002, Connectors for electronic equipment – Tests and measurements –
Part 6-3: Dynamic stress tests – Test 6c: Shock
IEC 60512-6-4:2002, Connectors for electronic equipment – Tests and measurements –
Part 6-4: Dynamic stress tests – Test 6d: Vibration (sinusoidal)
IEC 60512-6-5, Electromechanical components for electronic equipment – Basic testing
procedures and measuring methods – Part 6: Dynamic stress tests – Section 5: Test 6e:
Random vibration
IEC 60512-8-1:2010, Connectors for electronic equipment – Tests and measurements –
Part 8-1: Static load tests (fixed connectors) – Test 8a: Static load, transverse

– 10 – IEC 61076-3-123:2019 © IEC 2019
IEC 60512-8-2:2011, Connectors for electronic equipment – Tests and measurements –
Part 8-2: Static load tests (fixed connectors) – Test 8b: Static load, axial
IEC 60512-9-1:2010, Connectors for electronic equipment – Tests and measurements –
Part 9-1: Endurance tests – Test 9a: Mechanical operation
IEC 60512-9-2, Connectors for electronic equipment – Tests and measurements – Part 9-2:
Endurance tests – Test 9b: Electrical load and temperature
IEC 60512-11-1, Connectors for electrical and electronic equipment – Tests and measurements
– Part 11-1: Climatic tests – Test 11a – Climatic sequence
IEC 60512-11-3, Connectors for electronic equipment – Tests and measurements – Part 11-3:
Climatic tests – Test 11c: Damp heat, steady state
IEC 60512-11-4, Connectors for electronic equipment – Tests and measurements – Part 11-4:
Climatic tests – Test 11d: Rapid change of temperature
IEC 60512-11-9, Connectors for electronic equipment – Tests and measurements – Part 11-9:
Climatic tests – Test 11i: Dry heat
IEC 60512-11-10, Connectors for electronic equipment – Tests and measurements –
Part 11-10: Climatic tests – Test 11j: Cold
IEC 60512-11-12, Connectors for electronic equipment – Tests and measurements –
Part 11-12: Climatic tests – Test 11m: Damp heat, cyclic
IEC 60512-12-4, Connectors for electronic equipment – Tests and measurements – Part 12-4:
Soldering tests – Test 12d: Resistance to soldering heat, solder bath method
IEC 60512-12-5, Connectors for electronic equipment – Tests and measurements – Part 12-5:
Soldering tests – Test 12e: Resistance to soldering heat, soldering iron method
IEC 60512-13-1:2006, Connectors for electronic equipment – Tests and measurements –
Part 13-1: Mechanical operation tests – Test 13a: Engaging and separating forces
IEC 60512-13-2, Connectors for electronic equipment – Tests and measurements – Part 13-2:
Mechanical operation tests – Test 13b: Insertion and withdrawal forces
IEC 60512-13-5:2006, Connectors for electronic equipment – Tests and measurements –
Part 13-5: Mechanical operation tests – Test 13e: Polarizing and keying method
IEC 60512-14-7, Electromechanical components for electronic equipment – Basic testing
procedures and measuring methods – Part 14: Sealing tests – Section 7: Test 14g: Impacting
water
IEC 60512-15-1, Connectors for electronic equipment – Tests and measurements – Part 15-1:
Connector tests (mechanical) – Test 15a: Contact retention in insert
IEC 60512-15-6:2008, Connectors for electronic equipment – Tests and measurements –
Part 15-6: Connector tests (mechanical) – Test 15f: Effectiveness of connector coupling devices
IEC 60512-16-5, Connectors for electronic equipment – Tests and measurements – Part 16-5:
Mechanical tests on contacts and terminations – Test 16e: Gauge retention force (resilient
contacts)
IEC 60512-17-3, Connectors for electronic equipment – Tests and measurements – Part 17-3:
Cable clamping tests – Test 17c: Cable clamp resistance to cable pull (tensile)
IEC 60512-17-4, Connectors for electronic equipment – Tests and measurements – Part 17-4:
Cable clamping tests – Test 17d: Cable clamp resistance to cable torsion
IEC 60512-19-3, Electromechanical components for electronic equipment – Basic testing
procedures and measuring methods – Part 19: Chemical resistance tests – Section 3: Test 19c
– Fluid resistance
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60603-7, Connectors for electronic equipment – Part 7: Detail specification for 8-way,
unshielded, free and fixed connectors
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60793-2-10, Optical fibres – Part 2-10: Product specifications – Sectional specification for
category A1 multimode fibres
IEC 60793-2-50, Optical fibres – Part 2-50: Product specifications – Sectional specification for
class B single-mode fibres
IEC 60999-1, Connecting devices – Electrical copper conductors – Safety requirements for
screw-type and screwless-type clamping units Part 1: General requirements and particular
2 2
requirements for clamping units for conductors from 0,2 mm up to 35 mm (included)
IEC 60999-2, Connecting devices – Electrical copper conductors – Safety requirements for
screw-type and screwless-type clamping units – Part 2: Particular requirements for clamping
2 2
units for conductors above 35 mm up to 300 mm (included)
IEC 61076-1:2006, Connectors for electronic equipment – Product requirements – Part 1:
Generic specification
IEC 61076-3:2008, Connectors for electronic equipment – Product requirements – Part 3:
Rectangular connectors – Sectional specification
IEC 61076-3-117:2009, Connectors for electronic equipment – Product requirements – Part 3-
117: Rectangular connectors – Detail specification for protective housings for use with 8-way
shielded and unshielded connectors for industrial environments incorporating the IEC 60603-7
series interface – Variant 14 related to IEC 61076-3-106 – Push-pull coupling
IEC 61076-7-100, Connectors for electronic equipment – Product requirements – Part 7-100:
Cable outlet accessories – Detail specification for a metric cable sealing consisting of an
integrated part of heavy-duty rectangular or circular connector hoods and a sealing system
IEC 61156-1:2007, Multicore and symmetrical pair/quad cables for digital communications –
Part 1: Generic specification
IEC 61300-3-1:2005, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-1: Examinations and measurements – Visual
examination
IEC 61300-3-4:2012, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-4: Examinations and measurements – Attenuation

– 12 – IEC 61076-3-123:2019 © IEC 2019
IEC 61300-3-6:2008, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-6: Examinations and measurements – Return loss
IEC 61300-3-11:1995, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-11: Examinations and measurements – Engagement
and separation forces
IEC 61300-3-35:2015, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-35: Examinations and measurements – Visual inspection
of fibre optic connectors and fibre-stub transceivers
IEC 61300-3-47:2014, Fibre optic interconnecting devices and passive components – Basic test
and measurement procedures – Part 3-47: Examinations and measurements – End face
geometry of PC/APC spherically polished ferrules using interferometry
IEC 61753-1-3:2014, Fibre optic interconnecting devices and passive components –
Performance standard – Part 1-3: General and guidance for single-mode fibre optic connector
and cable assembly for industrial environment, Category I
IEC 61754-20:2012, Fibre optic interconnecting devices and passive components – Fibre optic
connector interfaces – Part 20: Type LC connector family
IEC 61755-3-1:2006, Fibre optic connector optical interfaces – Part 3-1: Optical interface,
2,5 mm and 1,25 mm diameter cylindrical full zirconia PC ferrule, single mode fibre
IEC 61984:2008, Connectors – Safety requirements and tests
IEC 62430:2009, Environmentally conscious design for electrical and electronic products
IEC 62664-1-1:2013, Fibre optic interconnecting devices and passive components – Fibre optic
connector product specifications – Part 1-1: LC-PC duplex multimode connectors terminated on
IEC 60793-2-10 category A1a fibre
IEC 62664-1-3, Fibre optic interconnecting devices and passive components – Fibre optic
connector product specifications – Part 1-3: LC-PC duplex singlemode connectors terminated
on IEC 60793-2-50 category B1.1 and B1.3 fibre (to be published)
IEC Guide 109, Environmental aspects – Inclusion in electrotechnical product standards
ISO 128-30:2001, Technical drawings – General principles of presentation – Part 30: Basic
conventions for views
ISO 1302:2002, Geometrical Product Specifications (GPS) – Indication of surface texture in
technical product documentation
ISO 11469:2016, Plastics – Generic identification and marking of plastics products
3 Terms, definitions, and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581 as well as
the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
protective conductor (PE)
conductor provided for purposes of safety, for example protection against electric shock
Note 1 to entry: In an electrical installation, the conductor identified PE is normally also considered as protective
earthing conductor.
[SOURCE: IEC 60050-581:2008, 581-27-26]
3.1.2
functional earth conductor
FE
earthing conductor provided for functional earthing
Note 1 to entry: Functional earthing a point or points in a system or in an installation or in equipment, for purposes
other than electrical safety.
3.2 Abbreviated terms
AC Alternating current
DC Direct current
LC Optical fibre connector in accordance with IEC 61754-20
PC Physical contact
4 Technical information
4.1 Systems of levels
4.1.1 Performance levels
See Table 9.
4.1.2 Compatibility levels, according to IEC 61076-1:2006
A-coding 3 electrical contacts (2+FE)
B-coding 3 electrical contacts (2+PE)
PC-A1a LC-PC duplex multimode connectors terminated on IEC 60793-2-10 category A1a
fibre according IEC 62664-1-1
PC-B1 LC-PC duplex single mode connectors terminated on IEC 60793-2-50 category B1.1
and B1.3 fibres according IEC 62664-1-3
Connectors according to this document are intermateable according to IEC 61076-1.
4.2 Classification into climatic categories
Table 1 shows the climatic category.
Table 1 – Climatic category
Category temperature Damp heat steady state
Climatic
Days
Lower Upper Temperature Rel. humidity
category
°C °C °C %
25/070/21 −25 +70 40 93 21
– 14 – IEC 61076-3-123:2019 © IEC 2019
4.3 Clearance and creepage distances
Creepage and clearance distances shall meet the requirements given in 6.4.1.
4.4 Current-carrying capacity
Conditions: IEC 60512-5-2, test 5b
All contacts
Values at 40 °C
A-coding 3 ways (2+FE) = 16 A
B-coding 3 ways (2+PE) = 16 A
4.5 Marking
The marking of the connector and the package shall be in accordance with 2.7 of
IEC 61076-1:2006.
5 Dimensional information
5.1 Common features
The connectors referenced in this specification are composed of LC-Duplex style connectors
and adaptors housed in harsh rated interfaces. The relevant information of the LC-Duplex
interface portion of this connector shall be compliant with the relevant part of IEC 61754-20.
The following requirements shall apply to the complete connector comprising of both the
LC-Duplex and the power contacts in the described outer housing.
Connectors meant to comply with IP ratings per IEC 60529 shall be appropriately mated and
sealed in order to meet the requirements detailed in the test schedules in 7.2.
5.2 Reference system
Coordination dimensions are dimensions without tolerances which indicate the boundary or
centre-line references in order to allow arrangement.
Dimensions are given in millimetres, drawings are shown in first angle projection according
ISO 128-30. The shape of connectors may deviate from those shapes given in the following
figures as long as the specified dimensions are not influenced.
5.3 Engagement (mating) information
5.3.1 Engaging (mating) direction
An arrow in Figure 1 indicates the mating direction.

Figure 1 – Section showing mating direction

5.3.2 Contact levels and sequencing
For all interfaces, the contact sequence during the connection process shall be:
• Protective Earth (if any)
• F
...