KW12-3 Roller-Lever Microswitches, Pack of Ten

Add a mechanical position input to a correctly rated project. These KW12-3 microswitches use a roller lever and snap-action contact. They are for competent electronics users matching a switch to an actuator and circuit.

• ✅ Detect a mechanical position — The roller lever transfers movement to the switch.
• ✅ Choose a contact state — SPDT terminals provide normally-open and normally-closed options.
• ✅ Fit a compact assembly — The small body suits limited component space.
• ✅ Prepare repeated builds — Ten switches provide a project batch.

Match the lever travel and contact rating

Check the actuator's force, travel and stopping position before fitting. The roller should operate the mechanism without excessive load on the switch body.

The stated body size is 20 × 10 × 6 mm. Confirm the actual component rating for the circuit and load; a small switch alone is not a complete machine-safety system.

Technical details

• Model: KW12-3
• Action: snap
• Actuator: roller lever
• Contacts: SPDT, NO/NC
• Body: 20 × 10 × 6 mm
• Current marking stated: 5 A
• Voltage marking stated: 125–250 V AC; check actual component
• Quantity: 10

Choose a compact roller switch for a correctly rated mechanical input.

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