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Snap Action, Limit Switches

Switches are devices used to transfer electrical energy from one circuit to another. They are a type of electromechanical device that helps control the flow of electrical power. Switches have many different uses in the construction and operation of electrical systems, such as limiting the amount of power that can flow through a circuit or regulating the timing of the circuit. One of the most commonly used types of switches is the snap action, limit switch. This type of switch is designed to measure and limit the amount of electricity that can flow through it.

A snap action, limit switch typically consists of a contact arm which is mechanically or electromechanically activated. The contact arm is connected to a movable arm which can move back and forth in response to the movement of the contact arm. When the contact arm reaches the predetermined limit point, the movable arm moves and changes the state of the switch, either opening or closing the circuit. This type of switch is typically used to control the flow of electricity and to provide a means of preventing the flow of too much electricity. They are also used to indicate when a specified amount of power has been reached.

Snap action, limit switches can be used for a variety of different applications. For example, they can be used to control the timing of a circuit, as well as providing an indication if the circuit overloads or shorts. They are also commonly used to regulate the flow of electrical power in industrial machinery and equipment. Additionally, they can be used to detect speeds and the position of moving parts, such as in robotic arms.

Snap action limit switches can also be used in safety systems, such as those found on road construction machinery and power tools. In these cases, they are used to detect the limits of operation, indicating when the machinery or tool has reached its limit and needs to be shut down or reset. This helps protect operators, as well as the machinery or tools, from damage.

The working principle of a snap action, limit switch is fairly simple. It consists of a contact arm that is mechanically or electromechanically actuated to rotate when the predetermined limit point is reached. The contact arm is connected to a movable arm, which can move back and forth, and when the contact arm is rotated, this causes the movable arm to move and activate the switch. The state of the switch is either opened or closed, depending on the direction of the contact arm rotation.

In summary, snap action, limit switches are a type of electromechanical device used to control and regulate the flow of electricity. They are typically used to measure and limit the amount of electricity that can flow through a circuit, as well as providing an indication when the circuit has reached a specified limit or overload. They are also used to detect speeds and the position of moving parts, as well as in safety systems where they can be used to detect the limits of operation. Their working principle is based on the contact arm which is connected to a movable arm which can move back and forth, and when the contact arm is rotated, this causes the movable arm to move and activate the switch.