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This switch is most commonly used to detect if a door or window is closed or open. Often found on high-end closet systems to turn on interior illumination. The design of the switch permits it to be recessed into the door frame and the roller ball is pushed into the body of the switch when closed.
A spring returns the ball to the normal (non-retracted) position when the door is opened.
This switch is normally closed when the door/window is closed. It will not turn a light on when a door is opened without the use of a relay. Also, be aware that this switch is ONLY rated up to 500mA MAX. A relay will help with usage of this switch in higher amperage situations.

  • Roller ball reed contact
  • N.O. contact
  • Mounting hole: 0.8"
  • Operating gap: 0.14" max.
  • Contact resistance: 0.3 ohm
  • Switching current: 0.5A
  • DC switching voltage: 100V
  • AC switching voltage: 125V
  • Wire: 24 AWG / 90°C (194°F)
  • Dimensions: 1.59" x 0.85" x 1.81"

QTY: 1 x Roller Ball Swith / Rolling Plunger Switch
Product condition: New