Microswitch with Roller Lever SPDT — 5A @ 250VAC, End-Stop & Limit Switch (2-Pack)

Microswitch with Roller Lever SPDT — 5A @ 250VAC, End-Stop & Limit Switch (2-Pack)

These SPDT microswitches with roller ball levers are the heavy-duty version of the standard lever microswitch — rated 5A @ 250VAC with a roller ball on the lever end for smooth, low-friction actuation by cams, ramps, and moving parts. The roller ball reduces wear on both the lever and the actuating surface, making these ideal for high-cycle applications like 3D printer end stops, CNC axis limits, and conveyor position detection. Pack of 2.

Electrical Specifications

• Configuration: SPDT (Single Pole Double Throw) — COM, NO, NC terminals
• Maximum Current: 5A
• Maximum Voltage: 250VAC
• Tested: 4A @ 30VDC (good snap-action operation)
• Action: Snap-action with roller ball lever
• Lever Length: 16mm (0.6")
• Lever Travel for Actuation: ~4mm
• Termination: Wire solder pins (compatible with small quick-disconnect connectors)
• Mounting: 2 holes for M2.5 or smaller screws
• Body Dimensions: 20 × 6 × 11mm
• Roller Color: May be red or black
• Pack Quantity: 2 switches

SPDT Terminal Functions

• COM (Common): Always connected — connect your signal or power here
• NC (Normally Closed): Connected to COM when lever is NOT pressed — opens when roller is depressed
• NO (Normally Open): Disconnected when lever is NOT pressed — connects to COM when roller is depressed

Roller Lever vs Standard Lever — Why Use a Roller?

• Roller lever: Ball rolls along the actuating surface — lower friction, less wear, smoother actuation by cams and ramps
• Standard lever: Lever tip slides along surface — higher friction, more wear on high-cycle applications
• Choose roller lever for cam-operated, ramp-actuated, or high-cycle applications

Typical Applications

• 3D printer end stops: X/Y/Z axis homing and travel limit switches
• CNC machine limits: Axis end-stop detection for CNC routers, mills, and lathes
• Conveyor position: Part presence and position detection on conveyor systems
• Cam-operated switching: Triggered by rotating cam for timed or position-based switching
• Robot arm limits: Joint travel limit detection for robotic arms
• Door interlock: Safety interlock switch for enclosure doors and guards

Package Contents

• 2 × SPDT microswitch with roller ball lever (5A @ 250VAC)

5A @ 250VAC, roller ball lever, 16mm reach, SPDT snap-action — pack of 2 heavy-duty microswitches for 3D printer end stops, CNC limits, and cam-operated position detection.