Product selection context
Start with the mechanism.
G303 waterproof micro switch with built-in resistor for EV charging guns—compact, space-saving, and a smart Honeywell or Omron micro switch replacement.
Use this page as an on-site starting point, not as a substitute for a controlled drawing or model-specific datasheet. Final selection depends on the actual switch position, movement, circuit, operating environment, and validation plan.
Typical operating points to review
Charging-gun release and lock
Detect button or lock movement and provide a position input to the charging control sequence.
Discuss this positionVehicle inlet locking pin
Confirm the position of a compact locking mechanism during connection and release.
Discuss this positionPort cover and access door
Report whether an access cover or service door has reached its intended position.
Discuss this positionCharging-pile cabinet access
Provide a door-state input for equipment access monitoring and control interlocks.
Discuss this positionThese are application examples for project discussion. Confirm the exact configuration, ratings, approvals, and system-level suitability with Unionwell engineering.
Four checks before you shortlist a switch
- Define the signal. Identify the position or event the mechanism must detect, including normal, released, and fault states.
- Map the movement. Share actuator type, available travel, operating force, mounting envelope, terminal direction, and tolerance stack.
- Specify the conditions. State voltage, current and load type, switching frequency, temperature, moisture, dust, vibration, and expected operating life.
- Plan validation and supply. Include required approvals, sample and test expectations, annual volume, project stage, target timing, and drawing revision.
Send a drawing, mechanism photo, or incumbent part number with your RFQ when available. The team can then check the mechanical interface and electrical requirements together.
