Mechanical Limit Switch Endstop, 5A, with 1m Cable, for 3D Printers

This mechanical limit switch gives a precise, physically-actuated way to detect when a moving part reaches a specific position, the standard approach used for homing axes on 3D printers and CNC machines before every print or job starts. A lever-actuated mechanical switch physically triggers when something presses against it, giving a reliable, unambiguous position signal rather than relying on an optical or magnetic sensor that could theoretically be fooled by lighting or interference.

Electrical rating is 5A at up to 125V, carried through a 22AWG cord rated for continuous use up to 80C, giving genuine headroom beyond the low-voltage signal duty most 3D printer and CNC controller boards actually put through an endstop circuit. The switch pulls its signal line low when activated, a standard, predictable behavior that matches what most printer and CNC firmware (Marlin, GRBL, and similar) expects from a mechanical endstop input by default.

A pre-attached 1 meter cable comes already wired to the switch terminal, removing the small but fiddly task of soldering or crimping connector wires directly onto the tiny switch terminals - a real time-saver when setting up or replacing multiple axis endstops on a machine build. The switch itself uses a standard lever-arm actuator design, the same mechanical form factor used across the vast majority of 3D printer and CNC endstop switches, meaning it's typically a drop-in replacement for a worn or failed original endstop.

Builders replacing a worn endstop switch on an existing 3D printer or CNC machine, or wiring up axis homing and travel-limit safety cutoffs on a new machine build, will find this limit switch a straightforward, pre-wired, drop-in component for that exact job.