It is not a good idea to let your 3way absorption
fridge run for any length of time when parked on a 12volt source as
they can consume 15amps or more & will quickly flatten the battery.
RV Electronics Fridge Switch is an electronic motion sensor that
cuts power off to the fridge after three minutes from stopping.
The Fridge Switch is rated to 25amps & is
installed on the floor behind the fridge, cutting into the positive
& negative power supply to the fridge. Four yellow crimped terminals
are provided which are will fit up to 6mm auto cable. A 40amp relay
can be used if the fridge draws more than 25amps. Also extra wiring
may be needed if the fridge requires a 12volt supply to ignite the
For more information please check the
article by Rob