What is Limit Switch?

Definition

A mechanical switch activated by physical contact with a moving machine element at a defined position. Limit switches provide end-of-travel protection, homing references, and position detection in CNC and automation systems.

Related Terms

Home Position

A fixed reference point on a machine axis used as the zero or origin for all pos...

Homing

The process of moving a machine axis to a known reference position after power-u...

Proximity Sensor

A non-contact sensor that detects the presence of nearby objects using inductive...

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