The Purpose of a Micro Switch

Definition

• A micro switch, also called a miniature snap-action switch, operates via a tipping-point mechanism. A tipping-point mechanism is a device used to displace an object from stable equilibrium to a new equilibrium state. This enables the switching to occur dependably at repeatable and specific positions of the actuator.

Use

• Micro switches are used in such applications as tamper switches on gate valves and safety switches on elevators. Micro switches serve the purpose of producing a large movement at the point of the electrical contacts based on a small movement occurring at the actuator device. As a result of this design, micro-switches are widely used due to their high durability and comparatively low cost.

Limit Switch

• Micro switches can be utilized for the purpose of limit switching. Limit switches respond to linear or rotary movement. In limit switching applications, a timer mechanism is formed by combining one or multiple micro switches with a motor driven cam. This snap-switch mechanism is typically used to control electrical machinery or machine tools.