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Limit Switches

A limit switch is a type of snap action switch that is used to control the movement of an object. Limit switches are typically used in industrial and commercial settings, where they can be used to stop or start the operation of a device or to signal that a certain position has been reached. They are often found in control panels, where they act as a sentinel to detect and limit the movement of machinery.

The most common type of limit switch is the mechanical limit switch. This type of switch typically consists of a pair of contacts connected by a spring-loaded arm. The arm is designed to contact the contacts when a predetermined distance has been travelled, either forwards or backwards. The arm is restrained when the contacts are aligned, but when it moves in the predetermined direction, the contacts are made and the switch is activated.

Limit switches can also be used in the domain of automation. Here, they act as a sensor and can be used to detect the position of a moving part in order to initiate an action. This type of switch is commonly used in robotics systems, where it can be used to detect the presence of a particular object and trigger a response from the robot.