How Centrifugal Switch Works

Centrifugal Switch:  A centrifugal switch is an electrical switch that operates using the centrifugal force created from a rotating shaft, most commonly that of an electric motor. The switch is designed to activate or de-activate as a function of the rotational speed of the shaft.

Perhaps the most common use of centrifugal switche is within single phase, split—phase induction motors. Here, the switch is used to disconnect the starting winding of the motor once the motor approaches its normal operating speed.
In Newton’s mechanics, the term centrifugal force is used to refer to one of two distinct concepts: an inertial force (also called a fictitious force) observed in a non-inertial reference frame and a reaction force.

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