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What is an Automotive Fuse?

1 Answers

VonReed

07/30/25 5:21am

An automotive fuse is an electrical device designed to disconnect a circuit by melting its fusible element when the current exceeds a specified value. Below are relevant details: 1. Fuse Introduction: A fuse operates by generating heat to melt its fusible element after the current surpasses a set threshold for a certain duration, thereby breaking the circuit. This principle is utilized to create a current protection device. 2. Application Scope: Fuses are widely used in high and low voltage power distribution systems, control systems, and electrical equipment as short-circuit and overcurrent protectors, making them one of the most commonly used protective devices. The engine significantly impacts vehicle performance and safety. Additionally, electrical components susceptible to interference from other devices must have dedicated fuses. Engine sensors, various warning lights, external lighting, horns, and other electrical components also greatly affect vehicle performance and safety, but these loads are not sensitive to mutual interference. Therefore, such electrical loads can be combined and share a single fuse as appropriate.

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