What is a limit switch? Three types of limit switches

• time：2023-06-06 16:00:47
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Limit switches, also called travel switches, can be installed on relatively stationary objects (such as fixed frames, door frames, etc., called still objects) or moving objects (such as vehicles, doors, etc., called animals). When an animal approaches a stationary object, the linkage action of the switch triggers the contacts of the switch, causing the closed contact to open or the open contact to close. Both the circuit and the motor are controlled by the opening and closing status of the switch contacts.

There are many types of limit switches, including mechanical, non-contact and Hall type, etc.:

1. Mechanical limit switch: The switch is triggered by mechanical contact between objects. They have various operating modes, including rotation, push/pull, rolling ball, etc.

2. Non-contact limit switches: Trigger switches by detecting electromagnetic fields, light or infrared rays, making them very useful for situations where isolation between objects is required.

3. Hall limit switch: Trigger the switch by detecting the magnetic field.

Limit switches are very flexible and widely used in many industries and applications. For example, in the automotive industry, they are often used to control vehicle doors and windows to ensure they are within their normal operating range. At the same time, in machine manufacturing, limit switches can also help ensure that machine parts are in their set positions, thus improving production efficiency and safety.

When you are looking to purchase a limit switch, you need to consider many different factors, including the type and distance of movement you need it to control, the temperature and humidity of the environment in which it will operate, and more. Also, different limit switches have different electrical specifications and sizes, so you need to make sure the switch you choose is suitable for your circuit and installation needs. If you're not sure which limit switch to use, or you need help determining which limit switch is best for your needs, contact a professional supplier. They can provide professional advice and support to ensure you choose the most suitable limit switch.

In summary, a limit switch is an important device used to detect movement and position. There are a variety of types to choose from, so you'll want to consider your needs carefully and contact a professional for support and advice.