SPDT Micro Limit Switch Roller Lever 5A – 3 Pins, 20x6mm
The limit switch is also known as a micro switch. In CNC, 3D Printing, and Rep Rap Printers these switches are used as End Stops and to detect the max and min limits of the axis. Mechanical switches are simple to use and cheaper than optical end-stops because they do not require a circuit board and only use 2 wires to connect the switch. Pull-up and down resistors can be put close to the mainboard.
Features:
- Reliable Position Detection: Provides consistent and accurate sensing of mechanical movement or limits in machines.
- Smooth Operation: The roller lever design ensures quiet and smooth actuation with minimal resistance and reduced wear.
- Compact and Space-Saving: Its small size allows it to fit into tight spaces, making it ideal for compact machinery or embedded systems.
- Flexible Wiring Options: With SPDT functionality, it allows for more control choices—can be used to open or close circuits depending on configuration.
- High Durability: Built for long mechanical life and frequent use in industrial or hobby applications.
- Quick Installation: Simple to mount and connect, making it easy to replace or upgrade.
- Cost-Effective Solution: Provides an economical alternative to optical or sensor-based limit switches without sacrificing reliability.
- Versatile Use: Suitable for a wide range of applications such as CNC machines, 3D printers, robotics, appliances, and safety systems.
- Fail-Safe Behavior: Can be wired to default to a “safe” state when triggered or released.
Specifications:
| Specification | Value |
|---|---|
| Operating Voltage | 250 V max. |
| Current Rating | 5 A max. |
| Number of Pins | 3 (Common, Normally Open, Normally Closed) |
| Lever Length | 20 mm |
| Lever Type | Metal lever with roller |
| Mounting Hole Diameter | 2.35 mm |
| Dimensions (without lever) | 20 x 10 x 6.3 mm |
Applications:
- Position sensing in machinery
- Automation systems
- Safety and limit detection
- Consumer electronics and appliances
Package Included:
- 1x SPDT Micro Limit Switch Roller Lever 5A 3 pins Dim:20*6mm






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