Hi, I have been flying large electrics for several years and I use a metal toggle switch from Radio Schack that is medium size easy to mount and can handle all the amperage my system can produce. This is a well proven system at least on my models. I have never had a failure or even a glitch. The switch is all metal, chrome or cadium plated and costs about 3 bucks. Other modelers tell me I am asking for it, but so far they are having more problems with their jury rigged switches than I am. I use a single pole single throw but it is available in other forms to also shut down other voltage souces. Norm