I replaced the switch behind he door of my rheem quite 80 furnace. When I opened the switch electricity popped , I don't have a blown fuse in the panel is there an in line fuse somewhere or is it something else.

I replaced the switch behind he door of my rheem quite 80 furnace. When i opened the switch electicity popped

Did it pop before or after you replaced the switch? If it poped after you replaced the switch you have a short circuit somewhere. Look for a small automotive switch on the circuit board since that is the only fuse that might be in your unit. You might also try turning completely off then back on the circuit brteaker in your house panel.