How to Wire a Momentary Switch

Updated February 21, 2017

A momentary switch is great for electrical projects that require power to be interrupted on an electrical device after a short duration, according to Glen Baxter, a certified electrician. Momentary switches are used, for example, to control car horns, windshield washer fluid pumps and tractor lights. The most familiar example is the doorbell on your house. Momentary switches are everywhere, Baxter says; you just have to know where to look.

Install a wire between the power supply and the momentary switch. Connect the wire to one side of each.

Attach the end of a wire to the other side of the momentary switch and connect the other end to the load. The device you are powering is called a load.

Connect the end of a wire to the other side of the load and attach the other end to the other terminal on your power supply.

Press the momentary switch and test your circuit.

Things You'll Need

  • Momentary switch
  • 3 wires
  • Electrical device
  • Power supply
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About the Author

Joey Butler began writing in 2006. His work has been published in "The Index Journal" and in "Review: Lander's Literary and Visual Arts Magazine." He has written everything from investigative news articles to a study guide that was published by I.B.I.D. Books. Butler holds a Bachelor of Arts in English from Lander University.