ISO 8820-6:2019
(Main)Road vehicles - Fuse-links - Part 6: Single-bolt fuse-links
Road vehicles - Fuse-links - Part 6: Single-bolt fuse-links
This document specifies single-bolt fuse-links in road vehicles. It establishes, for this fuse-link type, the rated current, test procedures, performance requirements and dimensions. This document is applicable to those fuse-links with a rated voltage of 58 V, a current rating of ≤300 A and a breaking capacity of 2 000 A, intended for use in road vehicles at a nominal voltage of 12 V, 24 V and/or 48 V.
Véhicules routiers — Liaisons fusibles — Partie 6: Liaisons fusibles à poste singulier
General Information
- Status
- Published
- Publication Date
- 04-Feb-2019
- Technical Committee
- ISO/TC 22/SC 32 - Electrical and electronic components and general system aspects
- Drafting Committee
- ISO/TC 22/SC 32/WG 5 - Fuses and circuit breakers
- Current Stage
- 9093 - International Standard confirmed
- Start Date
- 08-Jul-2024
- Completion Date
- 13-Dec-2025
Relations
- Effective Date
- 06-Jun-2022
- Effective Date
- 16-Jul-2016
Overview
ISO 8820-6:2019 - "Road vehicles - Fuse-links - Part 6: Single-bolt fuse-links" defines the design, test procedures, performance requirements and dimensions for single-bolt fuse-links used in road vehicles. This second edition (2019) replaces the 2007 edition and applies to fuse-links with a rated voltage of 58 V, current ratings ≤ 300 A, and a breaking capacity of 2 000 A, intended for use in nominal vehicle voltages of 12 V, 24 V and/or 48 V.
Key topics and technical requirements
- Scope & compatibility
- Intended to be used in conjunction with ISO 8820-1 (definitions and general test requirements) and ISO 8820-2 where relevant.
- Rated values
- Rated voltage: 58 V; current ratings listed (30, 40, 50, 75, 100, 125, 150, 175, 200, 225, 250, 300 A).
- Breaking capacity: 2 000 A.
- Mechanical & electrical design
- Definition of an insulating nut and requirements for terminal finishes and corrosion protection.
- Mounting torque specified at (12 ± 1) Nm.
- Insulating nut insulation resistance ≥ 200 kΩ (measured at 100 V DC).
- Test procedures & performance
- Test sequence and grouping across mechanical, electrical and environmental tests (minimum sample groups of 10).
- Voltage drop limits specified per fuse rating (e.g., 30 A → max 120 mV; 300 A → max 70 mV).
- Operating time ratings with defined limits at multiple multiples of In (1.0 I, 1.35 I, 1.5 I, 2.0 I, 3.5 I, 6.0 I).
- Transient current cycling performed at (90 ± 5) °C with defined on-time/current profiles.
- Breaking capacity test at 2 000 A using specified test cable sizes (per ISO 6722-1 conductor guidance).
- Strength tests for insulating body and insulating nut - components must remain physically intact after mechanical stress.
- Test fixtures & dimensions
- Detailed test-fixture specifications, cable-size tables and dimension drawings are provided to ensure repeatable test conditions.
Applications
- Ensures reliable short-circuit and overload protection for electrical distribution in passenger cars, light and heavy commercial vehicles, and electrical subsystems operating at 12 V, 24 V or 48 V.
- Used for component specification, vendor qualification, type testing, and compliance verification in vehicle electrical system design and manufacturing.
Who should use this standard
- Automotive OEMs and Tier‑1/Tier‑2 suppliers (fuse and connector manufacturers)
- Electrical and systems engineers designing vehicle power distribution
- Test laboratories and conformity assessment bodies
- Regulatory and procurement teams specifying protective devices
Related standards
- ISO 8820-1 (Definitions and general test requirements)
- ISO 8820-2
- ISO 6722-1 (Vehicle single-core cable requirements)
- ISO 2768-1 / -2 (General tolerances)
Keywords: ISO 8820-6:2019, single-bolt fuse-links, road vehicles fuse links, automotive fuse standard, fuse testing, rated current, breaking capacity, voltage drop, operating time.
Frequently Asked Questions
ISO 8820-6:2019 is a standard published by the International Organization for Standardization (ISO). Its full title is "Road vehicles - Fuse-links - Part 6: Single-bolt fuse-links". This standard covers: This document specifies single-bolt fuse-links in road vehicles. It establishes, for this fuse-link type, the rated current, test procedures, performance requirements and dimensions. This document is applicable to those fuse-links with a rated voltage of 58 V, a current rating of ≤300 A and a breaking capacity of 2 000 A, intended for use in road vehicles at a nominal voltage of 12 V, 24 V and/or 48 V.
This document specifies single-bolt fuse-links in road vehicles. It establishes, for this fuse-link type, the rated current, test procedures, performance requirements and dimensions. This document is applicable to those fuse-links with a rated voltage of 58 V, a current rating of ≤300 A and a breaking capacity of 2 000 A, intended for use in road vehicles at a nominal voltage of 12 V, 24 V and/or 48 V.
ISO 8820-6:2019 is classified under the following ICS (International Classification for Standards) categories: 43.040.10 - Electrical and electronic equipment. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 8820-6:2019 has the following relationships with other standards: It is inter standard links to ISO 9455-5:2020, ISO 8820-6:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 8820-6:2019 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 8820-6
Second edition
2019-02
Road vehicles — Fuse-links —
Part 6:
Single-bolt fuse-links
Véhicules routiers — Liaisons fusibles —
Partie 6: Liaisons fusibles à poste singulier
Reference number
©
ISO 2019
© ISO 2019
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.
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Published in Switzerland
ii © ISO 2019 – All rights reserved
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Marking and labelling . 1
5 Tests and requirements . 2
5.1 General . 2
5.1.1 Criteria . 2
5.1.2 Test sequence . . . 2
5.1.3 Test cable sizes . 3
5.2 Voltage drop . 4
5.2.1 Tests . 4
5.2.2 Requirements . 4
5.3 Transient current cycling . 4
5.3.1 Test . 4
5.3.2 Requirement . 5
5.4 Environmental conditions . 5
5.5 Operating time rating . 5
5.5.1 Test . 5
5.5.2 Requirement . 5
5.6 Current steps . 6
5.6.1 Test . 6
5.6.2 Requirement . 6
5.7 Breaking capacity . 6
5.7.1 Test . 6
5.7.2 Requirement . 6
5.8 Strength of terminals . 6
5.9 Strength of insulating body of the fuse-link and insulating nut . 6
5.9.1 Purpose . 6
5.9.2 Test . 6
5.9.3 Requirement . 7
6 Dimensions . 7
6.1 Single-bolt fuse-link . 7
6.2 Mounting example . 8
7 Test fixture . 8
Bibliography .11
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