What is a Micro Switch / Limit Switch?

What is a Micro Switch?

A Micro Switch is a small, very sensitive switch which requires minimum compression to activate. They are very common in home appliances and switch panels with small buttons. They are typically inexpensive and have a long life meaning they can function for a long time – sometimes up to ten million cycles.

Because they are reliable and sensitive, micro switches are often used as a safety device. They are used to prevent doors from closing if something or someone is in the way and other applications similar.

 How does a Micro Switch Work?

Micro Switches have an actuator which, when depressed, lifts a lever to move the contacts into the required position. Micro switches often make a “clicking” sound when pressed this informs the user of the actuation.

Micro switches often contain fixing holes so that they can be easily mounted and secured into place. Because they are such a simple switch they require virtually no maintenance and they rarely need replacing due to their long life.

Benefits of Using Micro Switches

As stated above, the main advantage of using a micro switch is their inexpensiveness, along with their long life and low maintenance. Micro Switches are also versatile. Some micro switches offer a protection rating of IP67 which means they are resistant to dust and water. This enables them to work in conditions which they are exposed to dust and water and they will still function correctly.

Applications for Micro Switches

The Micro Switches we can offer are commonly used in home appliance applications, building, automation and security applications. For example:

*Push buttons for alarms and call points
*Turning devices on surveillance cameras
*Triggers to alert if a device is dismounted
*HVAC applications
*Access control panels
*Elevator buttons and door locks
*Timer controls
*Washing machine buttons, door locks and water level detection
*Air conditioning units
*Refrigerators – ice and water dispensers
*Rice cookers and microwave ovens – door locks and buttons.


Post time: Aug-01-2023