three terminal triggered spark switch. This high-powered unit has a self breakdown voltage rating of 26 KV. And a current rating of 10 to 12 KA. This equates out to a peak power in excess of 300 MW! Quality made part was an over run from a government contract costing over $1000 each. They are used on a small handheld EMP pulse gun experiment. We have a limited amount and can offer them to you for $495 each. See our many other items on our spark switches page.