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

Covers only the additional interface dimensions for an alignment pin and a keying device used with subracks and plug-in units according to IEC 60297-3-101. May also be used in conjunction with IEC 60297-3-102.

General Information

• Status: Published
• Publication Date: 16-Aug-2004
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.240 - Mechanical structures for electronic equipment
• Technical Committee: SC 48D - Mechanical structures for electrical and electronic equipment
• Drafting Committee: WG 4 - TC 48/SC 48D/WG 4
• Current Stage: PPUB - Publication issued
• Start Date: 31-Dec-2004
• Completion Date: 17-Aug-2004

Relations

• Replaces: IEC 60297-5-105:2001 - Mechanical structures for electronic equipment - Dimensions of mechanical structures of the 482,6 mm (19 in) series - Part 5-105: Subracks and associated plug-in units - Alignment and/or earth pin
• Effective Date: 05-Sep-2023
• Replaces: IEC 60297-5-104:2001 - Mechanical structures for electronic equipment - Dimensions of mechanical structures of the 482,6 mm (19 in) series - Part 5-104: Subracks and associated plug-in units - Keying
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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
Reference number
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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: [phone] Telefax: [phone] E-mail: [e-mail] 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-
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with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
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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) 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.

– 4 – 60297-3-103 ” IEC:2004(E)
The IEC 60297-3 series consists of the following parts, under the general title Mechanical
structures for electronic equipment – Dimensions of mechanical structures of the 482,6 mm
(19 in) series
Part 3-101: Subracks and associated plug-in units
Part 3-102: Injector/extractor handle
Part 3-103: Keying and alignment pin
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
 reconfirmed;
 withdrawn;
 replaced by a revised edition, or
 amended.
A bilingual edition of this standard may be issued at a later date.

60297-3-103 ” IEC:2004(E) – 5 –
INTRODUCTION
The “Dimensions of mechanical structures of the 482,6 mm (19 in) standards are defined in
IEC 60297. To the original IEC 60297-3:1988 publication was added Amendment 1:1995. The
additional requirements were published in IEC 60297-4:1995 with Amendment 1:1999.
The extended requirements were published in the IEC 60297-5-1XX series (2001).
Responding to market requirements and for more clarity it became necessary to merge and
technically enhance these standard “parts” into 3 “new” standards for subracks and
associated plug-in units. This “merged” standard series now defined as IEC 60297-3-101,
IEC 60297-3-102 and IEC 60297-3-103 explains its relationship to the previous “fragmented”
IEC 60297-X standards, see Figure 1.
The nomenclature of these new standards has been revised. The relationship to IEC 60297-1
(Part 1: Panels and Racks) has been maintained. The relationship to IEC 60297-2 (Part 2:
Cabinets and pitches of rack structures) has been maintained. The relationship to IEC 61587-1
(Part 1: Climatic, mechanical tests and safety aspects for cabinets, racks, subracks and
chassis) and IEC TS 61587-3 (Part 3: Electromagnetic shielding performance tests for
cabinets, racks and subracks) has been added.
IEC 60297-3-103 defines only the interface dimensions for an alignment pin and a keying
device which are additional to those defined in IEC 60297-3-101.
New
Old
“merged” standard series
“fragmented“ standard series
Subracks and associated
Subracks and associated
plug-in units
plug-in units
Subracks and plug-in units      IEC 60297-3
IEC 60297-4
IEC 60297-3-101      IEC 60297-5-102
IEC 60297-5-103
IEC 60297-5-107
IEC 60297-5-101
IEC 60297-4
Subracks and plug-in units:
Injector/extractor handle
IEC 60297-3-102
IEC 60297-5-104
Subracks and plug-in units:
IEC 60297-5-105
Keying and alignment pin
IEC 60297-3-103
IEC  1089/04
Figure 1 – Relationship between the new IEC 60297-3 series
and the old IEC 60297 series
...