I can see why you would want to install the Go Power Automatic Transfer Switch # 34264403 as it would protect your system from power back feed, but the Progressive Dynamics RV Power Control Center # PD4135K does come with some safety features to protect itself in some cases. For instance, If a battery is accidentally hooked up backwards, the converter will be protected. An easily accessible ATC type fuse will blow when a battery is connected in reverse. Replace with same type and rating.... view full answer...