ISO/FDIS 8820-3

Road vehicles — Fuse-links — Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature)

ISO 8820-3:2015 specifies fuse-links with tabs (blade-type) Type C (medium), Type E (high current), and Type F (miniature) for use in road vehicles. It establishes, for these fuse-link types, the rated current, test procedures, performance requirements, and dimensions. ISO 8820-3:2015 is applicable for fuse-links with a rated voltage of 32 V or 58 V, a current rating of ≤100 A, and a breaking capacity of 1 000 A intended for use in road vehicles. ISO 8820-3:2015 is intended to be used in conjunction with ISO 8820‑1 and ISO 8820‑2. The numbering of its clauses corresponds to that of ISO 8820‑1, whose requirements are applicable, except where modified by requirements particular to this part of ISO 8820.

Véhicules routiers — Liaisons fusibles — Partie 3: Liaisons fusibles cavalier (Type à lame), Type C (moyen), Type E (courant élevé) et Type F (miniature)

General Information

• Status: Not Published
• ICS: 43.040.10 - Electrical and electronic equipment
• Technical Committee: ISO/TC 22/SC 32 - Electrical and electronic components and general system aspects
• Drafting Committee: ISO/TC 22/SC 32 - Electrical and electronic components and general system aspects
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 02-Mar-2026
• Completion Date: 02-Mar-2026

Relations

• Revises: ISO 8820-3:2015 - Road vehicles — Fuse-links — Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature)
• Effective Date: 02-Jul-2022

Overview

ISO/FDIS 8820-3: Road vehicles - Fuse-links - Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature) specifies standardized requirements for blade-type fuse-links commonly used in road vehicles. Developed by the International Organization for Standardization (ISO), this document defines key characteristics for tab or blade-type fuses, including Type C (medium), Type E (high current), and Type F (miniature). The scope includes performance criteria, dimensions, marking, color coding, and test procedures. Applicable for automotive fuse-links operating at rated voltages of 32 V or 58 V, with current ratings up to 100 A and a breaking capacity of 1,000 A, ISO/FDIS 8820-3 supports safe, reliable electrical systems in vehicles worldwide.

Key Topics

• Fuse-Link Types: Covers three major fuse-link types used in automotive applications:
  • Type C (medium)
  • Type E (high current)
  • Type F (miniature)
• Electrical Ratings: Specifies fuse-links with:
  • Rated voltage: 32 V or 58 V
  • Current rating: up to 100 A
  • Breaking capacity: 1,000 A
• Testing and Requirements: Processes and criteria for:
  • Voltage drop
  • Transient current cycling
  • Environmental testing (e.g., temperature rise, chemical, and mechanical loads)
  • Breaking capacity and terminal strength
• Marking and Colour Coding: Standardizes fuse labeling and colour codes for easy identification.
• Physical Dimensions: Defines the dimensions of Types C, E, and F blade fuses for compatibility and interchangeability.
• Sample Test Procedures: Details test fixtures, operating time-rating methods, and verification steps to ensure product reliability.

Applications

ISO/FDIS 8820-3 plays a crucial role in the automotive and road vehicle industry by:

• Ensuring Safety: Standardized fuse-links help prevent electrical overloads and protect vehicle circuitry, reducing the risk of fire or component failure.
• Enhancing Reliability: By following standard test procedures and requirements, manufacturers can ensure consistent fuse performance in harsh automotive environments.
• Interchangeability: Specified dimensions and ratings allow for the use of compatible fuses from multiple sources, supporting maintenance and repairs worldwide.
• Regulatory Compliance: Adherence to internationally recognized fuse standards supports vehicle certification and market acceptance in global markets.

Typical uses of fuse-links compliant with this standard include:

• Passenger cars, trucks, buses, and motorcycles
• Electrical system protection (lighting, infotainment, engine management, and more)
• Service and repair applications in the automotive aftermarket

Related Standards

For comprehensive automotive fuse specification and testing, ISO/FDIS 8820-3 should be used in conjunction with other documents in the ISO 8820 series:

• ISO 8820-1: Definitions and general test requirements for road vehicle fuse-links
• ISO 8820-2: User guidelines for fuse-link application and selection
• ISO 8820-4 to ISO 8820-13: Standards for additional fuse-link types and configurations (e.g., female contacts, bolt-in contacts, strip fuse-links, and high voltage fuses)
• ISO 2768-1: General tolerances for linear and angular dimensions
• ISO 6722-1: Dimensions, test methods, and requirements for copper conductor cables used in road vehicles

By complying with ISO/FDIS 8820-3 and related standards, automotive manufacturers, component suppliers, and service providers can ensure the consistent quality, performance, and safety of their electrical protection systems.

Standards Content (Sample)

DRAFT
International
Standard
ISO/DIS 8820-3
ISO/TC 22/SC 32
Road vehicles — Fuse-links —
Secretariat: JISC
Part 3:
Voting begins on:
Fuse-links with tabs (blade type) 2025-05-28
Type C (medium), Type E (high
Voting terminates on:
2025-08-20
current) and Type F (miniature)
Véhicules routiers — Liaisons fusibles —
Partie 3: Liaisons fusibles cavalier (Type à lame), Type C (moyen),
Type E (courant élevé) et Type F (miniature)
ICS: 43.040.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
This document is circulated as received from the committee secretariat.
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 8820-3:2025(en)
DRAFT
ISO/DIS 8820-3:2025(en)
International
Standard
ISO/DIS 8820-3
ISO/TC 22/SC 32
Road vehicles — Fuse-links —
Secretariat: JISC
Part 3:
Voting begins on:
Fuse-links with tabs (blade type)
Type C (medium), Type E (high
Voting terminates on:
current) and Type F (miniature)
Véhicules routiers — Liaisons fusibles —
Partie 3: Liaisons fusibles cavalier (Type à lame), Type C (moyen),
Type E (courant élevé) et Type F (miniature)
ICS: 43.040.10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
This document is circulated as received from the committee secretariat. BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: [phone]
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 8820-3:2025(en)
ii
ISO/DIS 8820-3:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking, labelling, and colour coding . 1
5 Tests and requirements . 2
5.1 General .2
5.1.1 Test criteria .2
5.1.2 Test sequence.6
5.2 Voltage drop .6
5.2.1 Tests .6
5.2.2 Requirements .7
5.3 Transient current cycling .8
5.3.1 Test . . .8
5.3.2 Requirements .8
5.4 Environmental conditions .9
5.5 Operating time-rating .9
5.5.1 Test . . .9
5.5.2 Requirement .9
5.6 Current steps .9
5.6.1 Test . . .9
5.6.2 Requirement .9
5.7 Breaking capacity .9
5.7.1 Test . . .9
5.7.2 Requirement .11
5.8 Strength of terminals.11
5.8.1 Test . . .11
5.8.2 Requirements .11
5.9 Test cable sizes .11
5.10 Temperature rise . 12
6 Dimensions .12
6.1 Fuse-links Types C, E, and F . 12
6.2 Designation example .14
Annex A (informative)  Temperature rise test.15
Bibliography .16

iii
ISO/DIS 8820-3:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list of
patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO's adherence to the WTO principles in the Technical Barriers to Trade (TBT)
see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 32, Electrical
and electronic components and general system aspects.
This ffifth edition cancels and replaces the fourth edition (ISO 8820-3:2015, which has been technically
revised.
ISO 8820 consists of the following parts, under the general title Road vehicles — Fuse-links:
— Part 1: Definitions and general test requirements
— Part 2: User guidelines
— Part 3: Fuse-links with tabs (blade type) Type C (medium), Type E (high current) and Type F (miniature)
— Part 4: Fuse-links with female contacts (Type A) and bolt-in contacts (Type B) and their test fixtures
— Part 5: Fuse-links with axial terminals (Strip fuse-links) Types SF 30 and SF 51 fixtures
— Part 6: Single-bolt fuse-links
— Part 7: Fuse-links with tabs (Type G) with rated voltage of 450 V
— Part 8: Fuse-links with bolt-in contacts (Type H and J) with rated voltage of 450 V
— Part 9: Fuse-links with shortened tabs (Type K)
— Part 10: Fuse-links with tabs Type L (high current miniature)
— Part 11: Fuse-links with tab
...

FINAL DRAFT
International
Standard
ISO/TC 22/SC 32
Road vehicles — Fuse-links —
Secretariat: JISC
Part 3:
Voting begins on:
2026-03-02
Fuse-links with tabs (blade type)
Type C (medium), Type E (high
Voting terminates on:
2026-04-27
current) and Type F (miniature)
Véhicules routiers — Liaisons fusibles —
Partie 3: Liaisons fusibles cavalier (Type à lame), Type C (moyen),
Type E (courant élevé) et Type F (miniature)
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 22/SC 32
Road vehicles — Fuse-links —
Secretariat: JISC
Part 3:
Voting begins on:
Fuse-links with tabs (blade type)
Type C (medium), Type E (high
Voting terminates on:
current) and Type F (miniature)
Véhicules routiers — Liaisons fusibles —
Partie 3: Liaisons fusibles cavalier (Type à lame), Type C (moyen),
Type E (courant élevé) et Type F (miniature)
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking, labelling and colour coding . 1
5 Tests and requirements . 2
5.1 General .2
5.1.1 Test criteria .2
5.1.2 Test sequence.6
5.2 Voltage drop .6
5.2.1 Tests .6
5.2.2 Requirements .7
5.3 Transient current cycling .8
5.3.1 Test . . .8
5.3.2 Requirements .9
5.4 Environmental conditions .9
5.5 Operating time-rating .9
5.5.1 Test . . .9
5.5.2 Requirement .9
5.6 Current steps .9
5.6.1 Test . . .9
5.6.2 Requirement .9
5.7 Breaking capacity .9
5.7.1 Test . . .9
5.7.2 Requirement .11
5.8 Strength of terminals.11
5.8.1 Test . . .11
5.8.2 Requirements . 12
5.9 Test cable sizes . 12
5.10 Temperature rise . 13
6 Dimensions . 14
6.1 Fuse-links Types C, E and F .14
6.2 Designation example .17
Annex A (informative)  Temperature rise test.18
Bibliography . 19

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO 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, ISO 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
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement. For an explanation of the voluntary nature of standards, the meaning of ISO
specific terms and expressions related to conformity assessment, as well as information about ISO's
adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
This fifth edition cancels and replaces the fourth edition (ISO 8820-3:2015), which has been technically
revised.
The main changes are as follows:
— updated test fixture definitions and drawings (see 5.1.1);
— updated temperature limit on Temperature Rise Test (see Clause A.2);
— changed dimension b on type "C" fuse drawing from 3,0 min to 2,5 min (see 6.1).
A list of all parts in the ISO 8820 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
FINAL DRAFT International Standard ISO/FDIS 8820-3:2026(en)
Road vehicles — Fuse-links —
Part 3:
Fuse-links with tabs (blade type) Type C (medium), Type E
(high current) and Type F (miniature)
1 Scope
This document specifies fuse-links with tabs (blade-type) Type C (medium), Type E (high current) and
Type F (miniature) for use in road vehicles. It establishes the rated current, test procedures, performance
requirements and dimensions for these fuse-link types.
This document is applicable for fuse-links with a rated voltage of 32 V or 58 V, a current rating of ≤100 A and
a breaking capacity of 1 000 A intended for use in road vehicles.
[1]
This document is intended to be used in
...

ISO/TC 22/SC 32
Secretariat: JISC
Date: 2026-02-1316
Road vehicles — Fuse-links —
Part 3:
Fuse-links with tabs (blade type) Type C (medium), Type E (high
current) and Type F (miniature)
Véhicules routiers — Liaisons fusibles —
Partie 3: Liaisons fusibles cavalier (Type à lame), Type C (moyen), Type E (courant élevé) et Type F (miniature)
FDIS stage
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
E-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking, labelling and colour coding . 1
5 Tests and requirements . 2
5.1 General . 2
5.2 Voltage drop . 8
5.3 Transient current cycling . 10
5.4 Environmental conditions . 10
5.5 Operating time-rating . 11
5.6 Current steps . 11
5.7 Breaking capacity . 11
5.8 Strength of terminals . 13
5.9 Test cable sizes . 14
5.10 Temperature rise . 15
6 Dimensions . 15
6.1 Fuse-links Types C, E and F . 15
6.2 Designation example . 17
Annex A (informative)  Temperature rise test . 18
Bibliography . 19

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types of
ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directiveswww.iso.org/directives).).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO 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, ISO 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
www.iso.org/patentswww.iso.org/patents. ISO shall not be held responsible for identifying any or all such
patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement. For an explanation of the voluntary nature of standards, the meaning of ISO
specific terms and expressions related to conformity assessment, as well as information about ISO's adherence
to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 32,
Electrical and electronic components and general system aspects.
This fifth edition cancels and replaces the fourth edition (ISO 8820-3:2015), which has been technically
revised.
The main changes are as follows:
— updated test fixture definitions and drawings (see 5.1.1);
— updated temperature limit on Temperature Rise Test (see Clause A.2);
— changed dimension b on type "C" fuse drawing from 3,0 min to 2,5 min (see 6.1).
A list of all parts in the ISO 8820 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.htmlwww.iso.org/members.html.
iv
Road vehicles — Fuse-links —
Part 3:
Fuse-links with tabs (blade type) Type C (medium), Type E (high
current) and Type F (miniature)
1 Scope
This document specifies fuse-links with tabs (blade-type) Type C (medium), Type E (high current) and Type F
(miniature) for use in road vehicles. It establishes the rated current, test procedures, performance
requirements and dimensions for these fuse-link types.
This document is applicable for fuse-links with a rated voltage of 32 V or 58 V, a current rating of ≤100 A and
a breaking capacity of 1 000 A intended for use in road vehicles.
This document is intended to be used in conjunction with ISO 8820-1 and [1]. The numbering of its clauses
corresponds to that of ,ISO 8820-1, whose requirements are applicable, except where modified by
requirements particular to 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.
ISO 19642-3, Road vehicles — Automotive cables — Part 3: Dimensions and requirements for 30 V a.c. or 60 V
d.c. single core copper conductor cables
ISO 8820-1, Road vehicles — Fuse-links — Part 1: Definitions and general test requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8820-1 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
4 Marking, labelling and colour coding
See ISO 8820-1 and Table 1.
Table 1 — Fuse-link colour coding
Current
Colour Colour
rating
Type C, Type F Type E
A
1 black
2 grey
Current
Colour Colour
rating
Type C, Type F Type E
A
3 violet
4 pink
5 tan/light brown
7,5 brown
10 red
15 blue
20 yellow yellow
a a
25 white grey or white
30 green green
35 dark green dark green
40 orange orange
50 red
60 blue
70 brown
a
80 white or grey
100 violet
a
For transparent fuse bodies, “white” means no colour is added to the plastic material. The same colour is not allowed for 25 A
and 80 A Type E.
5 Tests and requirements
5.1 General
5.1.1 Test criteria
In addition to carrying out the test procedures in accordance with ISO 8820-1, the following criteria apply.
Tests shall be performed following the test sequences in Table 2.
Fuse-links according to this document shall provide for visible evidence of an open-fuse element.
The test fixtures for electrical tests shall be designed in accordance with Figures 1 a), 1 b) and 1 c) depending
on the corresponding fuse type. The connection resistance shall be ≤0,8 mΩ for Type C (medium) and Type F
(miniature) fuse-links and ≤0,35 mΩ for Type E (high current) fuse-links to ensure the proper function of the
test fixture.
The body of the test fixture shall be made of a filled / reinforced thermoset compound (e.g. mineral filled
phenolic resin).
The terminal of the test fixture shall be made of: CuSn5 or CuSn6 alloy (phosphor bronze) with a thickness of
0,5 mm for Figure 1 a); CuFe2P alloy (high strength modified copper) with a thickness from 0,60 mm to 0,65
...