Originally Posted by bob213
Unless designated otherwise, breakers should not be used as on/off switches. You may not be replacing a burned out element, but you stand a very good chance of replacing a worn out breaker. The outside rocker switch is your best bet.
In the factory where I worked we used circuit breakers to control
over head fans over the work stations. These were cycled off and on
almost daily for years and years. Occasionally we'd have to replace one
or more but not very often.
In the case of an RV I would be VERY surprised if you managed to wear
one out. If you do, they are typically standard plug in breakers which
can be bought at HomeDebit or Lowes or a good hardware store for
around $5. A "risk" I'm willing to take for the sake of convenience.