BS ISO 8820-8-2019 PDF

Full title and description

BS ISO 8820-8:2019 — Road vehicles — Fuse-links — Part 8: Fuse-links with bolt-in contacts (Type H and J) with rated voltage of 450 V. This document (British adoption of ISO 8820-8:2019) specifies the designation, dimensions, marking, test fixtures, test procedures and performance requirements for bolt‑in fuse‑links intended for use in road vehicle electrical systems at 450 V DC.

Abstract

This standard covers fuse-links with bolt‑in contacts (Type H and Type J) rated for 450 V DC, intended for use in road vehicles. It sets out rated currents, dimensional requirements, marking and labelling, test methods and performance criteria (including breaking capacity and current‑rating classes). It is intended to be used together with ISO 8820‑1 and ISO 8820‑2 and replaces the 2012 edition.

General information

• Status: Published (British adoption of ISO 8820-8:2019).
• Publication date: October / November 2019 (ISO publication: Oct 2019; BS publication/adoption: 11 Oct 2019).
• Publisher: British Standards Institution (BSI) — adoption of the International Standard developed by ISO/TC 22/SC 32.
• ICS / categories: 43.040.10 — Electrical and electronic equipment for road vehicles.
• Edition / version: Edition 2 (ISO 8820-8:2019).
• Number of pages: BS published version: 20 pages (BSI product listing); ISO original: 11 pages.

Scope

Applies to bolt‑in fuse‑links (Type H and Type J) for road vehicles with a rated voltage of 450 V DC, current ratings up to and including 400 A and a breaking capacity of 2 000 A. The standard defines required marking, dimensional and mechanical characteristics, test fixtures, and the tests and performance requirements that these fuse‑links must meet; it is used in conjunction with ISO 8820‑1 and ISO 8820‑2.

Key topics and requirements

• Applicability to Type H and Type J bolt‑in fuse‑links for 450 V DC automotive systems.
• Rated current classes (up to ≤ 400 A) and required breaking capacity (2 000 A) specifications.
• Mandatory marking and labelling requirements (manufacturer/trademark, rated current, rated voltage marking such as "450 V DC").
• Dimensional and mechanical requirements (detailed dimensions for Type H and J bolt‑in contacts and mounting interfaces).
• Specified test fixtures and standardized test procedures (electrical, thermal and mechanical tests) and pass/fail performance criteria.
• Interoperation with ISO 8820‑1 and ISO 8820‑2 (numbering and baseline requirements follow Part 1 unless modified).

Typical use and users

Used by automotive OEMs, electrical/harness designers, fuse manufacturers, component testing laboratories, certification bodies and regulatory authorities involved in high‑voltage vehicle electrical systems (e.g., battery electric and hybrid vehicles) to ensure interchangeability, safety and repeatable performance of bolt‑in fuse‑links.

Related standards

Part of the ISO 8820 series (fuse‑links for road vehicles). Key related documents include ISO 8820‑1 (general requirements for fuse‑links) and ISO 8820‑2 (another part addressing different fuse types); the 2019 edition replaces ISO 8820‑8:2012. Other series and national/adopted versions (BS ISO 8820‑8:2019) provide country‑level adoption details.

Keywords

fuse‑links, bolt‑in contacts, Type H, Type J, 450 V DC, road vehicles, automotive fuses, breaking capacity, rated current, BSI, ISO 8820

FAQ

Q: What is this standard?

A: BS ISO 8820‑8:2019 is the British-adopted edition of ISO 8820‑8:2019 specifying requirements for bolt‑in fuse‑links (Type H and J) for use in road vehicle electrical systems at 450 V DC.

Q: What does it cover?

A: It covers dimensional, marking and mechanical requirements, test fixtures, test methods and performance criteria for H‑ and J‑type bolt‑in fuse‑links rated at 450 V DC (current ratings up to ≤ 400 A, breaking capacity 2 000 A), and is to be used alongside ISO 8820‑1 and ISO 8820‑2.

Q: Who typically uses it?

A: Automotive manufacturers (OEMs), fuse and component manufacturers, wiring‑harness designers, independent test laboratories, certification bodies and regulatory agencies working with high‑voltage vehicle systems.

Q: Is it current or superseded?

A: The 2019 edition (ISO 8820‑8:2019 / BS ISO 8820‑8:2019) is the current published edition that replaced the 2012 edition. Users should check for any subsequent amendments or revisions published after 2019.

Q: Is it part of a series?

A: Yes — it is Part 8 of the ISO 8820 series (fuse‑links for road vehicles). The series includes ISO 8820‑1 (general requirements) and other parts addressing different fuse types and contact arrangements.

Q: What are the key keywords?

A: Fuse‑links; bolt‑in contacts; Type H; Type J; 450 V DC; automotive fuses; breaking capacity; rated current; ISO 8820; BSI.