83886111

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Snap Action, Limit Switches

Snap Action, Limit Switches, also known as a “crank switch,” is an electromechanical switch renowned for its ability to allow for precise and repeatable signals in relation to a specific position or range. They are most commonly used in commercial and industrial applications, including elevators, motors, robots, and security systems. Whereas most other switches interact with a machine’s mechanical components when actuating, the snap action switch is purely mechanical and actuates differently to offer greater responsiveness and reliability.

83886111 Application Field and Working Principle

In addition to their widespread use in commercial, residential and industrial sectors, Snap Action, Limit Switches are commonly used in medical technology, especially imaging and diagnostic equipment. They are also used in industrial automation, traffic control systems and mass transit systems.

Generally, a standard Snap Action, Limit Switch consists of four components: a contact, an actuator, an operating lever, and a spring.

The actuator is the component that allows the switch to have a snap action. It is an object fitted with a mechanical feature, such as a lever, that interacts with the contact in order to open or close it. It also has the ability to snap to a predetermined position when a certain force or torque is applied.

When a force is applied to the actuator, the lever creates a mechanical action that actuates the contact in order to activate the switch. This snapping action is what gives the switch its name. The force needed to actuate the switch is predetermined and can be adjusted using the internal settings of the switch.

The operating lever is the component that transfers movement from the actuator to the contact. It is typically made of metal, like brass or stainless steel, and is designed to allow for the actuator to move freely with minimal resistance.

The contact is what allows current to flow from the power source to the load. It is the component that is actuated by the other three components and is typically made of metal, such as copper or silver.

The spring component is used to ensure that the contact remains closed when it has either opened or closed. It is designed to ensure that the contact is held closed until the predetermined force is applied to actuate the switch. This ensures that the switch always remains in its desired position.

Snap Action, Limit Switches are incredibly reliable and versatile, making them incredibly valuable for a variety of applications. They are also inexpensive and easy to install, making them the ideal choice for many commercial, residential, and industrial applications.

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