Originally Posted by Nitroxron
It is probably answered somewhere and I am using the wrong search criteria. When a 5th wheel is disconnected from the tow vehicle, do the trailer brakes lock. I have parked on some slanted areas before and always use chocks prior to disconnecting and not brave enough to "test" that theory.
The answer is usually no. Most trailer brakes are electric, and are powered proportionally thru your tow vehicle and the electric brake controller.
You also have what is called an emergency disconnect switch on your RV (this is the emergency cable you connect to your truck bed or such). If your RV becomes disconnected from the tow vehicle. then this cord is pulled which then draws power from the RV's battery to power the brakes to stop the trailer in case of a breakaway situation. That's why you always want to make sure your RV has a battery and it's charged when traveling.
You are doing correct, and make sure to always chock your RV's wheels/tires.
This link may help explain how electric trailer brakes operate:
Speaking of chocks, Harbor Freight sells some great solid rubber chocks.