Inertia Switch

An inertia switch is a type of switch that is commonly used in automotive applications. It is designed to detect sudden changes in velocity or acceleration, such as those that occur during a collision or impact. When a sudden change in velocity is detected, the inertia switch will open or close its contacts, depending on its design.

The purpose of an inertia switch is to interrupt the flow of electrical current to certain components or systems in a vehicle in the event of a collision. This can help prevent further damage or injury by shutting off power to fuel pumps, ignition systems, or other critical components.

Inertia switches are typically installed in a vehicle's fuel system, as shutting off the fuel supply can help reduce the risk of fire or explosion in the event of a crash. However, they can also be used in other applications where sudden changes in velocity need to be detected and acted upon.

In summary, an inertia switch is a type of switch that is used to detect sudden changes in velocity or acceleration and interrupt the flow of electrical current in response to these changes. It is commonly used in automotive applications to help prevent further damage or injury in the event of a collision.