I used this switch 5-7 times before it stopped working . Appears a small piece of plastic melted inside the switch mechanism. I used 14-2 as my supply wire, running a router and shop vacuum off the switch. appears this was too much voltage for this switch. I believe to contact heated up during my last use and when I turned off the switch and the contact retracted, it melted the plastic and now the switch will not stay on. the power transmits when I depress the green button, but stops immediately after releasing it, even though the green button is still depressed.it came with 2 so I will try using only one power tool after rewriting this one.