ISO 8820-3:2015

Overview

ISO 8820-3:2015 is an international standard developed by the International Organization for Standardization (ISO) for fuse-links with tabs (blade type) used in road vehicles. This standard covers three main types of blade fuses: Type C (medium), Type E (high current), and Type F (miniature). It aims to ensure consistent safety, performance, and interchangeability of automotive fuse-links by specifying their rated current, voltage, test procedures, performance requirements, and physical dimensions.

ISO 8820-3:2015 is designed for fuse-links with:

• Rated voltage of 32 V or 58 V
• Rated current of up to 100 A
• Breaking capacity of 1,000 A

This part of the ISO 8820 series is intended to be used together with ISO 8820-1 (definitions and general test requirements) and ISO 8820-2 (user guidelines), ensuring comprehensive coverage for manufacturers and users.

Key Topics

ISO 8820-3:2015 covers a range of important topics for the specification and testing of automotive blade-type fuse-links, including:

• Fuse Types and Applications: Focuses on Type C (medium), Type E (high current), and Type F (miniature) blade fuses.
• Rated Characteristics: Defines rated voltage, current, and breaking capacity for safe and reliable usage.
• Marking and Colour Coding: Details marking requirements and international colour codes for easy identification of fuse types and ratings.
• Physical Dimensions: Establishes standard dimensions and tolerances to ensure interchangeability and fit in vehicle systems.
• Testing and Performance Requirements: Specifies test sequences, including voltage drop, transient current cycling, environmental resistance, operating time, current steps, breaking capacity, terminal strength, and temperature rise.
• Quality and Safety Criteria: Includes clear guidelines for terminal forces, deformation limits, and electrical continuity to support robust safety and operational standards.

Applications

ISO 8820-3:2015 is especially valuable for the automotive industry, supporting the design, production, and maintenance of electrical systems in road vehicles. Typical applications include:

• Automotive Electrical Circuits: Protection of wiring and components in passenger cars, trucks, buses, and utility vehicles.
• Component Manufacturing: Design and production of blade-type fuses for original equipment and aftermarket replacements.
• Vehicle Maintenance and Repair: Standardizing fuse selection and servicing procedures to ensure compatibility and safety.
• System Integration: Ensuring electrical system architects and harness designers use compatible fuse-links for varied current and voltage levels.

Standardization to ISO 8820-3:2015 benefits automotive OEMs, parts suppliers, testing laboratories, and vehicle service providers by improving reliability, interoperability, and safety across the automotive sector.

Related Standards

ISO 8820-3:2015 is part of a broader series of standards addressing fuse-links in road vehicles. Closely relevant standards include:

• ISO 8820-1: Road vehicles - Fuse-links - Part 1: Definitions and general test requirements
• ISO 8820-2: Road vehicles - Fuse-links - Part 2: User guidelines
• ISO 2768-1: General tolerances - Tolerances for linear and angular dimensions without individual indications
• ISO 6722-1: Road vehicles - 60 V and 600 V single-core cables - Dimensions, test methods and requirements for copper conductor cables

For comprehensive compliance and best practices, manufacturers and users should consult the full ISO 8820 series and the above related standards.

Keywords: ISO 8820-3:2015, automotive fuse-links, blade-type fuses, Type C, Type E, Type F, road vehicles, fuse standards, electrical safety, vehicle components, fuse colour coding, automotive electrical systems.