I'm not familiar with your switch, but so long as you can isolate all 4 rails where the loop connects to the switch, then the AR-1 should do the trick allowing you to traverse the loop with no polarity issues.
I don't use them as I run deadrail, but I'm assuming the AR-1 tolerates the short duration short as metal wheels first cross the gap, then quickly changes the polarity to eliminate that short.
Basing my response on a quick review of the AR-1 instructions.
