Automotive-grade sensing and interlock solutions for vehicle controls and mechanisms.
Vehicle programs require disciplined review of temperature, vibration, sealing, travel, packaging, electrical load, and validation requirements.
Application engineering
Automotive Switches
-40°C to +150°C application range, vibration resistance, IP67 / IP68 options
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Design priorities
- Application-specific mechanisms
- Automotive quality planning
- Sealed and compact options
- Harness and connector integration
Typical switch positions
- Door and trunk locks
- Seat adjustment
- Seat-belt reminder
- Window anti-pinch
- Electronic braking
- Glove box, sun visor, and fuel flap
Product in the application
Where the switch
does the work.
Representative mechanisms and sensing points for engineering teams. The series shown are starting points; confirm the exact model, rating, environment, and validation requirements with Unionwell.
Door and liftgate latch position
Detect open, closed, or latched states so the vehicle control system can receive a clear mechanical position signal.
Series to evaluateG303R / G9
Discuss this application 
Power seat adjustment
Provide position or end-of-travel feedback inside compact seat adjustment mechanisms.
Series to evaluateG19
Discuss this application 
Seat-belt reminder
Detect buckle engagement as an input to the vehicle reminder system.
Series to evaluateG20
Discuss this application Gear selector and cabin mechanisms
Sense a lever or moving cabin mechanism at defined positions within a constrained package.
Series to evaluateG9 / G303
Discuss this application Fuel or charging flap
Report flap or latch position where the mechanism is exposed to dirt, moisture, or vibration.
Series to evaluateG303R / G9
Discuss this application Starting platforms
Series to review
G303R, G19, G20, G23A/B/L, G25/G26, G307A/B, G9, G22 OEM
Recommendations are a starting point only. Final selection requires the mechanism, load, environment, approvals, quantity, and validation plan.Browse product platformsEngineering answers
Questions buyers
usually ask.
Use these checks to prepare a clear micro switch RFQ. Final selection depends on the exact assembly and validation requirements.
Where are micro switches used in automotive systems?
Common sensing points include door and liftgate latches, power-seat travel, seat-belt buckle status, gear selectors, and fuel or charging flaps. The switch usually reports a mechanical state to the vehicle control system; the vehicle design owner must validate the final functional and electrical architecture.
What information should an automotive RFQ include?
Describe the mechanism, movement and operating position; circuit load and voltage; actuator and terminal constraints; temperature, moisture, dust and vibration; expected operating life; required approvals; annual volume; and validation or quality requirements.
Are the series shown on this page a confirmed fit?
No. The listed series are starting points for technical evaluation, not a guarantee of fit or certification for a vehicle program. Confirm the exact model, ratings, samples, environmental limits, and system-level validation plan with Unionwell engineering.