Miniature snap-action switch

A micro-switch is an electrical switch having its contacts in the open state is less than 3 mm apart. The case is marked with the symbol μ. Particularly well known is the microswitch with snapping system as a standard component in many electrical appliances.

Designs as NC and NO contacts are possible, indicate the design as a changer with the three terminals NC contact, NO contact and reed.

Due to the small contact spacing the microswitch is only suitable for switching low loads. He usually comes in displacement sensor or position switch arrays of digital controls are used.