The microswitch features a minute contact spacing and a rapid-acting mechanism, a contact mechanism that operates with specified travel and force, encased within a housing, with a transmission device on the exterior and a compact design. The microswitch is composed of five major constituent elements. It has a smaller contact spacing and a larger torque. Typically, it is equipped with a driving rod on the exterior.

External mechanical force is applied to the moving leaf spring through transmission elements (pins, buttons, levers, roller wheels, etc.), causing an instantaneous action when the moving leaf spring reaches the critical point, rapidly connecting or disconnecting the moving contact at the end of the leaf spring with the fixed contact.

Once the applied force on the transmission element is removed, the action spring generates a reverse action force. Upon reaching the action critical point of the spring when the transmission element's reverse stroke is completed, the reverse action is executed instantaneously. The microswitch features a small contact spacing, short action stroke, low actuating force, and rapid switching. The action speed of its moving contact is unrelated to the action speed of the transmission element.