83269625

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Snap action, limit switches are important parts in the electrical industry. They are used in a variety of applications, including in device control and signalling applications. The fundamental purpose of the limit switch is to detect the presence of an object, indicate when it arrives and break or make an electrical connection. There are a variety of limit switches and components with different features for providing an effective solution for many types of control and switching needs. This article is about the 83269625 application field and working principle of snap action, limit switches.

Types of Snap Action, Limit Switches

Snap action, limit switches are classified according to the following types:

• Open-side switches
• Closed-side switches
• Open-closed switches
• Large-body switches
• Mini switches
• Small-body switches
• Top-entry switches
• Left-entry switches

83269625 Application Field

Snap action, limit switches are widely used in industrial automated machines, household appliances, electric automation control and other fields for detecting, indicating and enumerating phenomena. These switches can be used for manual or automated control in industrial operations. The application fields of snap action, limit switches can be further divided into:

• Grippers, lifters and positioners
• Safety interlocks and locked gates
• Pneumatic positioning systems
• Linear actuators
• Rotary actuators
• Presses

In these fields, snap action, limit switches are used to ensure accurate shutoff or user control. For example, in a press, the switch is used to activate the brakes that prevent further movement when the press reaches a determined position. In addition, a limit switch can be used as an alarm switch to shut off the machine if the speed exceeds a certain level.

83269625 Working Principle

The working principle of snap action, limit switches is fairly simple. The switch consists of a contact or arm that moves in a linear path. When it is pressed or pulled by an object, it will open or close the circuit. The mechanical movement of the contact is quickly and accurately repeated with the same speed and force, regardless of the direction of the object.

The switch is attached to a manual control rod, or in some cases, a pneumatic or hydraulic control device. The control rod or device causes the contact in the switch to move, opening or closing the circuit depending on the direction. For example, when the manual control rod is pulled, the contact in the switch closes, completing the circuit and activating the device. When the rod is released, the contact reopens, interrupting the circuit, and the device is disengaged.

These switches are designed to last over many cycles of operation and can be relied upon to consistently handle the switch’s mechanical forces, regardless of the direction of the force applied.

Conclusion

Snap action, limit switches are an important part of industrial automation systems, and are widely used for determining object location as well as controlling and signalling applications. Their working principle is simple and reliable, allowing for consistent and accurate operation. The wide range of design types, sizes and application fields of these switches make them useful for a variety of industrial uses.

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