EN 60297-3-103:2004

SLOVENSKI SIST EN 60297-3-103:2005

STANDARD
december 2005
Mehanske konstrukcije elektronske opreme – Mere mehanskih konstrukcij v
seriji 482,6 mm (19 in) – 3-103. del: Kodirni in poravnalni trn (IEC 60297-3-
103:2004)
Mechanical structures for electronic equipment – Dimensions of mechanical
structures of the 482,6 mm (19 in) series – Part 3-103: Keying and alignment pin
(IEC 60297-3-103:2004)
ICS 31.240 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60297-3-103
NORME EUROPÉENNE
EUROPÄISCHE NORM September 2004

ICS 31.240 Supersedes EN 60297-5-104:2001 & EN 60297-5-105:2001

English version
Mechanical structures for electronic equipment -
Dimensions of mechanical structures of the 482,6 mm (19 in) series
Part 3-103: Keying and alignment pin
(IEC 60297-3-103:2004)
Structures mécaniques  Bauweisen für elektronische
pour équipement électronique - Einrichtungen -
Dimensions des structures mécaniques Maße der 482,6-mm-(19-in-)Bauweise
de la série de 482,6 mm (19 in) Teil 3-103: Kodierung und Führungsstift
Partie 3-103: Codage et broche (IEC 60297-3-103:2004)
d'alignement
(CEI 60297-3-103:2004)
This European Standard was approved by CENELEC on 2004-09-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60297-3-103:2004 E

Foreword
The text of document 48D/301/FDIS, future edition 1 of IEC 60297-3-103, prepared by SC 48D,
Mechanical structures for electronic equipment, of IEC TC 48, Electromechanical components and
mechanical structures for electronic equipment, was submitted to the IEC-CENELEC parallel vote and
was approved by CENELEC as EN 60297-3-103 on 2004-09-01.
This European Standard supersedes EN 60297-5-104:2001 and EN 60297-5-105:2001.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2005-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60297-3-103:2004 was approved by CENELEC as a
European Standard without any modification.
__________
- 3 - EN 60297-3-103:2004
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application 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 Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60297-3-101 - Mechanical structures for electronic EN 60297-3-101 2004
equipment - Dimensions of mechanical
structures of the 482,6 mm (19 in) series
Part 3-101: Subracks and associated
plug-in units
1) 2)
IEC 60297-3-102 - Part 3-102: Injector/extractor handle EN 60297-3-102 2004

IEC 60917-1 1998 Modular order for the development of EN 60917-1 1998
mechanical structures for electronic
equipment practices
Part 1: Generic standard
) Undated reference.
Valid edition at date of issue.

INTERNATIONAL IEC
STANDARD 60297-3-103
First edition
2004-08
Mechanical structures for electronic equipment –
Dimensions of mechanical structures
of the 482,6 mm (19 in) series –
Part 3-103:
Keying and alignment pin
” IEC 2004  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
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International Electrotechnical Commission
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For price, see current catalogue

– 2 – 60297-3-103 ” IEC:2004(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope and object.6
2 Normative references .6
3 Terms and definitions .6
4 Arrangement overview: Keying of plug-in units in a subrack.7
4.1 General .7
4.2 Subrack interface dimensions for keying .8
4.3 Plug-in unit keying interface dimensions.8
4.4 Key dimensions .9
4.5 Programming of keys .9
4.6 Keying chamber inspection dimensions .10
5 Arrangement overview: alignment and/or electrical contact of a plug-in unit to a
subrack .11
5.1 General .11
5.2 Alignment and/or electrical contact receptacle in the subrack guide rail for
printed board type plug-in units (width dimension t 4 x 5,08 mm).12
5.3 Alignment and/or electrical contact interface inspection dimensions.13
6 Arrangement overview: Subrack guide rail and printed board, 2,54 mm offset of the
printed board reference plane .14
6.1 General .14
6.2 Dimensions of the subrack guide rail with 2,54 mm offset of the printed board
reference plane .15
6.3 Reference plane for printed boards with 2,54 mm offset position.15
7 Dimensions used in the figures .16
Figure 1 – Relationship between the new IEC 60297-3 series and the old IEC 60297
series .5
Figure 2 – Keying of a plug-in unit in a subrack .7
Figure 3 – Subrack interface dimensions for keying .8
Figure 4 – Plug-in unit keying interface dimensions .8
Figure 5 – Key dimensions.9
Figure 6 – Programming of keys.9
Figure 7 – Front and/or rear subrack and plug-in unit keying chamber inspection
dimensions .10
Figure 8 – Alignment and/or electrical contact of a plug-in unit to a subrack .11
Figure 9 – Alignment and/or electrical contact receptacle position in the subrack .12
Figure 10 – Alignment and/or electrical contact interface inspection dimensions.13
Figure 11 – Subrack guide rail and printed board, 2,54 mm offset of the printed board
reference plane .14
Figure 12 – Dimensions of the subrack guide rail with 2,54 mm offset of the printed
board reference plane.15
Figure 13 – Reference plane for printed boards with 2,54 mm offset position.15

60297-3-103 ” IEC:2004(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
MECHANICAL STRUCTURES FOR ELECTRONIC EQUIPMENT –
DIMENSIONS OF MECHANICAL STRUCTURES
OF THE 482,6 mm (19 in) SERIES –
Part 3-103: Keying and alignment pin
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
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 60297-3-103 has been prepared by subcommittee 48D:
Mechanical structures for electronic equipment, of IEC technical committee 48: Electro-
mechanical components and mechanical structures for electronic equipment.
This standard cancels and replaces IEC 60297-5-104 and 60297-5-105.
The text of this standard is based on following documents:
FDIS Report on voting
48D/301/FDIS 48D/308/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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The IEC 60297-3 series consists of the following parts, un
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