Micro Switch Function

The micro switch is a contact mechanism with a small contact interval and a snap-action mechanism, and a contact mechanism that performs the switching action with a specified stroke and a specified force. It is covered with a shell and has a drive rod outside. Small, hence the name micro switch, also called a sensitive switch. The electrical text symbol is SM.

Micro Switch Introduce

Although the microswitch is small, it plays an irreplaceable role in our daily lives and realizes automatic control and safety protection in equipment requiring frequent circuit switching. It has been widely used in electronic equipment, instrumentation, mining, power systems, household appliances, aerospace, aviation, missiles, tanks, and other military fields. In addition, they can also be used in computer mice, car mice, automotive electronic products, communication equipment, military products, as well as testing instruments, gas water heaters, gas stoves, small household appliances, microwave ovens, rice cookers, floating ball equipment, medical equipment, building automation, power tools and general electrical and radio equipment, 24-hour timers.

Snap Action Operation Force

The external mechanical force acts on the action through transmission elements (pressing pins, buttons, levers, rollers, etc.). An instantaneous action occurs when the action reed is displaced to the critical point, making the moving contact at the end of the action reed and the fixed contact point switch on or off quickly.

When the force on the transmission element is removed, the action reed generates a reverse action force. When the transmission element’s reverse stroke reaches the reed’s critical action point, the reverse action is completed instantaneously. The contact distance of the microswitch is small, the action stroke is short, the pressing power is small, and the on-off is fast. The action speed of the moving contact has nothing to do with the action speed of the transmission element.

Micro Switch Application Range

They are mainly used in the switches of some electrical components, such as computer mice, car mice, automotive electronic products, communication equipment, military products, testing instruments, gas water heaters, gas stoves, small household appliances, microwave ovens, rice cookers, floating ball equipment, Medical devices, building automation, power tools and general electrical and radio equipment, 24-hour timers, etc.

Unionwell G3 Series Subminiature Sealed Micro Switch Products List >> 

Unionwell Micro Switch Certification

Unionwell micro switches have obtained UL, ENEC, CQC, and other international certifications and passed ISO9001, IATF16949, and ISO14001 quality system assurance.