Bourns GDT35 3-Electrode GDT Arrestor Design Kit contains an assortment of five pieces each of the eight most popular Model GDT35 voltages to provide design engineers with various protection solutions for quick-turn prototype testing. These GDTs improve protection from voltage transients caused by lightning or accidental contact with AC power lines. The GDT35 components provide an enhanced level of voltage limiting during fast-rising events to reduce stress on downstream components.