IEC TR 63358-1:2023

Graphical symbols for diagrams - Part 1: General, qualifying and generic symbols

IEC TR 63358-1:2023 contains, by way of example, a collection of generic symbols, general symbols and qualifying symbols for diagrams taken from IEC 60617. Some of the wording of entries in the IEC 60617 database are annotated and/or modified for the purpose of clarification. Existing symbols in the IEC 60617 database are classified according to the classification proposed in this document.

General Information

• Status: Published
• Publication Date: 02-Feb-2023
• ICS: 01.080.10 - Public information symbols. Signs. Plates. Labels
• Technical Committee: TC 3 - Documentation, graphical symbols and representations of technical information
• Drafting Committee: MT 29 - TC 3/MT 29
• Current Stage: PPUB - Publication issued
• Start Date: 09-Mar-2023
• Completion Date: 03-Feb-2023

Standards Content (Sample)

IEC TR 63358-1
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Edition 1.0 2023-02
TECHNICAL
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Graphical symbols for diagrams –
Part 1: General, qualifying and generic symbols
IEC TR 63358-1:2023-02(en)

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IEC TR 63358-1

®


Edition 1.0 2023-02




TECHNICAL



REPORT








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inside










Graphical symbols for diagrams –

Part 1: General, qualifying and generic symbols


























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ELECTROTECHNICAL


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– 2 – IEC TR 63358-1:2023  IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Classification of graphical symbols . 7
4.1 General symbols . 7
4.2 Qualifying symbols . 20
4.3 Generic symbols for common use . 40
Bibliography . 46

Figure 1 – Relationship among types of graphical symbols for diagrams . 5

Table 1 – Examples of general symbols applicable in all domains . 7
Table 2 – Examples of applicable general symbols specific to binary logic elements . 17
Table 3 – Examples of qualifying symbols . 20
Table 4 – Examples of generic symbols . 41

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IEC TR 63358-1:2023  IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

GRAPHICAL SYMBOLS FOR DIAGRAMS –

Part 1: General, qualifying and generic symbols

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
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC TR 63358-1 has been prepared by IEC technical committee 3: Documentation, graphical
symbols and representations of technical information. It is a Technical Report.
The text of this Technical Report is based on the following documents:
Draft Report on voting
3/1488/DTR 3/1539/RVDTR

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 Technical Report is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.

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– 4 – IEC TR 63358-1:2023  IEC 2023
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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.

IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
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IEC TR 63358-1:2023  IEC 2023 – 5 –
INTRODUCTION
Initial work was done by TC 3 Maintenance Team 60617 with the aim to clarify the terminology
used in the naming of some of the graphical symbols for diagrams standardized in IEC 60617.
This document also highlights improved naming of some graphical symbols categorized
according to the concepts of generic symbol, general symbol and qualifying symbol, where the
symbol "name" is recognized as giving a short description of the meaning of the graphical
symbol for diagrams. Figure 1 provides the relationship among types of graphical symbols for
diagrams.

Figure 1 – Relationship among types of graphical symbols for diagrams

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– 6 – IEC TR 63358-1:2023  IEC 2023
GRAPHICAL SYMBOLS FOR DIAGRAMS –

Part 1: General, qualifying and generic symbols



1 Scope
This document contains, by way of example, a collection of generic symbols, general symbols
and qualifying symbols for diagrams taken from IEC 60617. Some of the wording of entries in
the IEC 60617 database are annotated and/or modified for the purpose of clarification. Existing
symbols in the IEC 60617 database are classified according to the classification proposed in
this document.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
graphical symbol
visually perceptible figure with a particular meaning used to transmit information independently
of language
Note 1 to entry: The graphical symbol may represent objects of interest, such as products, functions or requirements
for manufacturing, quality control, etc.
Note 2 to entry: A graphical symbol is not to be confused with the simplified representation of products which is
normally drawn to scale and which can look like a graphical symbol.
[SOURCE: ISO 81714-1:2010, 3.1]
3.2
basic symbol
graphical symbol representing a defined concept, applicable for use in diagrams
Note 1 to entry: A basic symbol can be:
– used alone; or
– qualified by qualifying symbols or other basic symbols; or
– used as a qualifier to another basic symbol.
3.3
general symbol
basic symbol that forms the basis for other basic symbols representing the same main concept
but with different specific characteristics

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IEC TR 63358-1:2023  IEC 2023 – 7 –
Note 1 to entry: IEC 60617 graphical symbols S00001, S00227, S00457, S00555, S00567, S00583, S00641,
S00841, and S00842 are examples of the concept of "general symbol".
3.4
qualifying symbol
graphical symbol applicable only for providing additional information to a basic symbol
Note 1 to entry: IEC 60617 categories "Qualifiers only" and "Functional attribute only" provide a list of qualifying
symbols, e.g., S00077, S00120 and S00223.
3.5
generic symbol
graphical symbol that represents a main concept and is intended to be adapted with characters,
qualifying symbols or basic symbols when being applied
Note 1 to entry: IEC 60617 graphical symbols S00066, S00819, S00910, S00911, S00912, S01870, S01921 are
examples of the concept of "generic symbol".
3.6
name
short description of the meaning of the graphical symbol for diagram
[SOURCE: IEC 60617, General description, modified – the introductory "a" has been removed,
and "meaning of the symbol" has been replaced with "meaning of the graphical symbol for
diagram".]
4 Classification of graphical symbols
4.1 General symbols
General symbols are the bases for a set of other basic symbols representing the same main
concept but with different specific characteristics. Table 1 provides examples of general
symbols for concepts applicable to all domains, for use in diagrams. Table 2 provides examples
of general symbols for the domain of binary logic elements.
NOTE In Table 1 and Table 2, the column with the heading "Name" of graphical symbols sometimes includes
additional wording after the comma which is not included in IEC 60617 at the time of publication of this document.
Such additional wording will form part of the information to be used when a complete maintenance of IEC 60617
takes place. It is useful to keep consistency of naming. Therefore, any additions or deletions are highlighted in red.
Table 1 – Examples of general symbols applicable in all domains
Symbols ID Name
S00001 Connection, general symbol

S00031 Contact, female (of a socket or plug), general
symbol

S00032 Contact, male (of a socket or plug), general
symbol

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– 8 – IEC TR 63358-1:2023  IEC 2023
Symbols ID Name
S00213 Converter, general symbol

S00227 Make contact, general symbol;
Switch, general symbol

S00229 Break contact, general symbol

S00230 Change-over break before make contact,
general symbol

S00270 Multi-position switch, general symbol

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IEC TR 63358-1:2023  IEC 2023 – 9 –
Symbols ID Name
S00271 Multi-position switch, maximum four positions,
general symbol

S00297 Motor starter, general symbol

S00305 Operating device, general symbol;
Relay coil, general symbol

S00362 Fuse, general symbol

S00371 Spark gap, general symbol

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– 10 – IEC TR 63358-1:2023  IEC 2023
Symbols ID Name
S00376 Static switch, general symbol

S00453 Box, general symbol

S00457 Socket outlet (power) general symbol

S00465 Socket outlet (telecommunications), general
symbol

S00466 On/Off switch, general symbol for installation
diagrams

S00484 Luminaire, general symbol; Fluorescent lamp,
general symbol

S00487 Projector, general symbol

S00498 Straight section, general symbol

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IEC TR 63358-1:2023  IEC 2023 – 11 –
Symbols ID Name
S00533 Aeronautical ground light, elevated, general
symbol

S00534 Aeronautical ground light, surface, general
symbol

S00552 Warning sign, general symbol;

Guidance sign, general symbol

S00555 Resistor, general symbol

S00567 Capacitor, general symbol

S00583 Coil, general symbol;
Winding, general symbol

S00608 Delay line, general symbol; Delay element,
general symbol

S00641 Semiconductor diode, general symbol

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Symbols ID Name
S00841 Transformer with two windings, general symbol
/Form 1

S00842 Transformer with two windings, general symbol
/Form 2

S00844 Transformer with three windings, general
symbol /Form 1

S00845 Transformer with three windings, general
symbol /Form 2

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IEC TR 63358-1:2023  IEC 2023 – 13 –
Symbols ID Name
S00846 Auto-transformer, general symbol /Form 1

S00847
...