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This transfer switch automatically changes from shore power to generator power when needed. Protects your electrical system from AC power backfeed.
Features:
Specs:
This transfer switch has been pre-wired to automatically change the primary source of AC current from shore power to generator or inverter power when activated. It has a 50-amp double pole switch that includes (2) 120V legs, which can provide 240V service if needed. To prevent electrical interruptions, the time delay circuit board allows the alternate power source to stabilize before a transfer occurs. Additionally, since the switch only accepts one active source, it protects your electrical system from dangerous backfeed that can damage your equipment.
The metal case has cord knockouts for the various connections.
The switch wires to your shore power input and generator or inverter input. Both inputs are wired to the AC panel.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Ordered this when my OEM switch went bad. It was easy to install, and a year later it is working like a charm.
As always, happy with the service from etrailer. I particularly appreciate their videos highlighting products under consideration. I am also a fan of the speed of delivery and the shipment tracking that they provide. This Progressive Dynamics PD52 was purchased to replace a 15-year-old OEM transfer switch in our motorhome that was beginning to give us trouble. The process was practically plug-and play. The configuration of the electrical contactors within the box is the same as that of the old one, so wiring was all located in the correct positions from the get go. I selected this particular ATS because it has a metal case. Plastic would have probably worked just fine, but I prefer metal in case anything should start heating up within it. Good product and good service. No complaints!
why are the nipples stamped the wrong way,, shows that no one is doing quality check , very poor.
Worked perfectly
Ordered a transfer switch for my Newmar diesel pusher. The model Newmar recommended was in stock. It showed up on time as promised. Install was relatively easy.
Highly recommend etrailer!
Perfect fit. Thank you so much for all your help.
Product worked great
I paid for overnight delivery and it was delivered a day late. I had to purchase this item from another store in order to have my camper repaired in time for our trip.
Great service and response
Barre
8/23/2025
works great
Gwendolyn Y.
8/26/2025
fast shipping, arrived with no noticeable damage. well packed.
Arrived earlier than expected
Quickly shipped and works as expected.
Delivery was fast and the product was exactly as described.
It was a crazy situation and I called and I can’t tell you how happy I was with your service, you guys totally took care of me right away, and I’m greatly appreciate your kind response and great customer service, no issues so far and will definitely pass on this website to my friends…you guys are awesome and thank you !!
Doug H.
5/17/2025
Its still going strong, and i highly recommend upgrading with Etrailor for superior results like i have, this company cares and agian, thank you so much!!!
Perfect! Fixed our problem!
One year after replacing the transfer switch in my trailer with this model I have had no further problems with my electrical system. Installation was easy as well.
Another satisfied customer.
Mike L.
4/22/2026
Thanks Rafael, we appreciate your business!
Came quick and customer support was ama zing
Prefect fit and change out for our unit. Solved our problem. Delivered well packaged and in a timely manner. Thanks!
This item shipped fast and was exactly as described. The automatic email with tracking information was a nice touch. I have used etrailer for many parts and as always they have never dissapointed.
this was bought as a replacement to a different brand in a RV. the fit was great, and wiring was simple. delivery was pretty quick, leaving minimal down time on a RV that's out almost every weekend of the year, not much room for error and down time.
Great communication with Breanna during the delivery process. Her personal follow up with me was impressive and appreciated. I would highly recommend etrailer for any needs.
Works well as a replacement for the original equipment in my 2020 Intech 32' custom trailer.
I think it’s great to have air conditioning after a week of 90 to 100 degrees in my motor home. Thanks for allowing me to get my AC voltage back on.
Solid construction with a durable metal housing. Easy to remove lid for access. My only suggestion is that the 1” cable clamps should be provided with the unit.
Gerry
5/13/2026
Working flawlessly
Info for this part was:
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Ted
1/22/2024
Transfer switch has perfectly...