Most of these switches trigger a solenoid that actually disconnect/connect the house batteries, and return to a neutral position when released. You may confirm this by turning on a light in the coach,(when NOT on shore power) push the disconnect side of the switch and watch the lights.
2000 Winnebago Ultimate Freedom pushed by a 2013 Chevy Silverado K1500 And so, my fellow Americans: ask not what your country can do for you — ask what you can do for your country.John F. Kennedy 20Jan1961