understanding 12v automotive relay： function, types, and applications
Release time:2025-12-11 18:37:51
A 12V Automotive relay is an essential component in modern automotive electrical systems, providing a reliable and efficient way to control high-power devices with low-power signals. In this article, we will explore the functionality of Automotive relays, their types, and common applications, offering a deeper understanding of this vital component.
What is a 12V Automotive relay? A 12V automotive relay is an electrically operated switch that allows low-current control circuits to switch high-current loads without directly connecting the low-voltage signal to the high-voltage power supply. Most vehicles run on a 12V electrical system, making a 12V relay the standard for most automotive applications. The relay consists of two main parts： a coil and a set of contacts. When a low-voltage signal energizes the coil, it generates a magnetic field that activates the contacts, either opening or closing the circuit, depending on the relay’s design.
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