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Product Overview
The Micro Limit Switch Arm Long Blade Lever 28mm from Pro Tronix is a robust electromechanical switch that triggers with very little physical force. The extended 28mm lever arm provides increased sensitivity and a larger strike area, making it ideal for detecting the movement of mechanical parts. Operating as an SPDT (Single Pole Double Throw) switch, it offers both “Normally Open” (NO) and “Normally Closed” (NC) configurations to suit any circuit logic.
Technical Specifications
| Feature | Specification |
| Actuator Type | 28mm Long Blade Lever |
| Circuit Type | SPDT (1 NO, 1 NC, 1 COM) |
| Action Type | Momentary (Self-Resetting) |
| Voltage Rating | 125V / 250V AC |
| Current Rating | 5A |
| Terminals | 3-Pin (Solder Lug) |
| Material | High-grade Plastic & Metal Lever |
| Supplier | Pro Tronix |
Key Features
Extended Reach: The 28mm blade lever is perfect for applications where the triggering object is slightly offset from the switch body.
Dual-Mode Logic: With 3 pins, you can choose to complete a circuit when the lever is pressed or break a circuit when it is released.
Snap-Action Mechanism: Pro Tronix ensures a sharp, tactile “click” that provides immediate electrical switching with high repeatability.
Industrial Strength: Rated at 5A/250V, making it safe for both low-power microcontroller logic and higher-power AC loads.
Common Applications
3D Printers & CNC: Used as limit switches or “homing” sensors for the X, Y, or Z axes.
Safety Interlocks: Detects if a door or protective cover is open or closed.
Automation: Object detection on conveyor belts or mechanical arm positioning.
