5Pcs Micro Limit Switch SPDT Roller Lever 1A 125V AC 12x6x6mm

5-Pack Micro Limit Switches with Long Roller Lever Arm | SPDT | 1A 125V AC

Upgrade your electronics projects with this convenient 5-pack of micro limit switches. These compact SPDT (Single Pole Double Throw) momentary push button switches feature a long roller lever arm for precise mechanical actuation, making them ideal for DIY electronics, robotics, 3D printers, CNC machines, mouse repairs, and general-purpose circuit control applications.

With CE/CCC certifications, a rated current of 1A at 125V AC, and a mechanical life of up to 5,000,000 operations, these switches deliver consistent, reliable performance in a tiny 12×6×6mm footprint. PCB solder terminals make them easy to integrate into any breadboard or custom PCB design.

Key Features

• Pack of 5 — great value for prototyping, repairs, and replacements
• SPDT Contacts — versatile normally-open and normally-closed switching
• Long Roller Lever Arm — enables precise, low-force mechanical actuation
• Rated 1A / 125V AC — suitable for low-voltage control circuits
• 3-Pin PCB Solder Terminals — easy integration into PCBs and breadboards
• CE & CCC Certified — meets international safety standards
• Up to 5,000,000 Mechanical Operations — built for long-lasting use
• Compact Size — approx. 12 × 6 × 6mm (0.47″ × 0.23″ × 0.23″)
• Wide Operating Temperature — -25°C to +65°C
• Made in Mainland China

Technical Specifications

Common Applications

• 3D printer end-stop switches
• CNC machine limit detection
• Robotics and automation projects
• Mouse button repair and replacement
• DIY electronics and Arduino/Raspberry Pi projects
• Home automation triggers and position sensing

What's in the Box

• 5 × Micro Limit Switch with Long Roller Lever Arm (12×6×6mm, SPDT, 3-Pin)

For more hands-on electronics and maker project components, explore our DIY project inspiration or check out our full range of maker-friendly accessories.

For guidance on electrical component safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What does SPDT mean on these micro limit switches?

A: SPDT stands for Single Pole Double Throw. This means each switch has three terminals — Common (C), Normally Open (NO), and Normally Closed (NC) — giving you the flexibility to use the switch in either normally-open or normally-closed circuit configurations. This makes SPDT micro limit switches extremely versatile for 3D printers, robotics, and automation projects.

Q: Are these micro limit switches compatible with Arduino or Raspberry Pi projects?

A: Yes! These 3-pin PCB solder-terminal limit switches are widely used with Arduino, Raspberry Pi, and other microcontroller platforms. Their low operating force and compact 12×6×6mm size make them perfect for breadboard prototyping and custom PCB layouts. Simply wire the Common (C) and Normally Open (NO) or Normally Closed (NC) pins to your circuit as needed.

Q: Can these switches be used as end-stop switches for a 3D printer?

A: Absolutely. Micro limit switches with a roller lever arm are one of the most popular choices for 3D printer end-stops. The roller lever provides precise, repeatable actuation, and the compact size fits most standard end-stop mounts. At 1A / 125V AC rated capacity, they are well within the operating range of typical 3D printer control boards.

Q: How long do these micro switches last?

A: Each switch is rated for up to 5,000,000 mechanical operations, ensuring long-lasting, dependable performance even in high-cycle automation environments. CE and CCC certifications further confirm their quality and compliance with international safety standards.