20 Pack KW12-3 Micro Limit Switches With Roller Lever Arm SPDT Snap Action 250V 5A AC Tiny Switches For 3D Printers CNC Machines And DIY Electronics Projects

KW12-3 Roller Lever Micro Switches, 20-Pack, SPDT 250V 5A ✔️ SPDT, 1 NO/1 NC, 250V 5A, micro switch w/ roller lever

These KW12-3 micro limit switches are compact roller-actuated switches designed for precise endstop and limit sensing in 3D printers, CNC machines, and DIY electronics projects. Their small size fits panel mounts and tight spaces.

✅ SPDT configuration with 1 NO and 1 NC contact
✅ Rated 250V AC, 5A current handling
✅ Standard KW12-3 footprint: 20 x 10.5 x 6.5 mm
✅ Roller lever for precise actuation and reliable reset

💡 What is a micro limit switch used for in small CNC and 3D printer setups?

- Handy for endstops and limit sensing in Cartesian printers and hobby CNCs
- Provides reliable snap-action with SPDT contacts for easy wiring and fast response
- Roller lever enhances consistent actuation across cycles in tight spaces
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