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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 available. 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 plastic case also has cord knockouts for other connections.
The switch wires to your shore power input and generator or inverter input. Both inputs are wired to the AC panel.
Additionally, the lever lock connectors make installation faster and more secure. Simply open the lever, insert the wire, and close.
California residents: click here
This is a basic, no frills, transfer switch that gets the job done.
Pros:
Low price
Lot's of knockout points for wiring
Wago flip connectors included for easy connections
Switching delay (can be disabled if desired)
Cons:
Plastic housing
Bypassing the switch delay requires adding a jumper which is not provided.
Components mounted using pop rivets instead of screws.
Grounding bar mounted with a single rivet which is not very sturdy.
I am using this in a single axel camper trailer with a 2,000 Watt inverter. For my setup, I decided to disable the switching delay. This is not difficult but requires removing the cover off the PCB circuit. For the jumper, you have to figure something out. There's not much room to fit a jumper so you may need to get creative. I ended up soldering a wire across the jumper pins.
The 2 power inputs are marked Generator and Plug (shore power). When power is sensed on the Generator input, the switch connects it to breaker panel. For my application, I decided to reverse these connections. So, when I plug in to shore power, it disconnects the inverter. This is so the battery charger is running whenever connected to shore.
That brings me to the one thing I hadn't thought of when I started this project. The charger was connected to the electrical panel. This was no good because there would be a power loop: Inverter => Charger => Batteries => Inverter
So, I had to disconnect the charger from the breaker panel and connect it directly to the shore power line. Also, to be safe, I added a small breaker box with 15A breaker for the charger.
Exact replacement for my 2005 Gulfstream Yellowstone RV. The quick flip connectors speeds up installation and is better than the factory installed wire nut caps. Shipped fast.
The transfer switch was exactly what I needed and the added quick attach wire assembly enabled me to change it out in about 10 minutes. Great product, arrived quickly, and fixed my RV power issue in minutes. Thanks etrailer.
Gwendolyn Y.
3/28/2025
Sounds like the perfect quick fix!
This product worked flawlessly. Easy to read and wire. We found the best location and wired so easily i can honestly say this was the most strait forward product I bought. I did call tech support for one question before buying but never anything else. We are really enjoying our Van with shore power, inverter, and generator if needed.
Replaced older failed terminal block style perfectly...new snap connectors work great
Victoria H.
4/4/2025
You really connected the dots with that replacement Ron! Glad to hear everything worked out perfectly :)
etrailer came through for me with very fast service and delivery of the transfer switch I desperately needed.
Item as listed I going to use it with my new camper to hook up my 2000 way inverter to the pre inverter wiring that came with my new camper
Great Product. Etrailer was great to deal with.
Very nice !
Easy installation
Easy installation with the quick flip c onnectors
It works as intended and as soon as I turn on my 2000 w inverter it takes probably 15 seconds or so for it to kick in and then it kicks in and you've got electricity to your rig when your boondocking. I would highly recommend !!
Great service. Tracking info the whole way. Had not one problem. Highly recommend
Works great. Batterys always charge up.
Just installed the switch. Worked as described the first time. Easy to install.
No issues. Does its job, the switching is a bit loud but you always know it's working. Would buy again. The wago connectors where a nice bonus and made install extra easy.
These are great switches at a great price. I've installed quite a few as replacements. This one was for my personal RV. I added a generator, so this was necessary to flip between shore power and the generator. It was a tight fit in the space, but works well.
Perfect fit per usual with etrailer. Came in quick and installed easy.
easy replacement following enclosed instructions. Good service, good communication, quick shipping with reasonable shipping charge, considering that I needed it quickly.
If you have the skills, it is very easy to install yourself. The quick flip connectors are an excellent design change from the original.
Great service
Fixed my generator problem. It would run but not get the electricity to the AC, Microwave, fridge, etc
Very good upgraded direct replacement for my melted OEM 5110 (photo). The only issue I had was one quick flip clip opened during installation. There does not appear to be enough detent force to keep it closed securely. My solution was to wrap the clip with electrical tape to prevent the possibility of reopening.
These are quality switches, and the service from etrailer is always great!
Relatively easy to install. Replaced previous generation Transfer Switch because of loose connection causing what could have been a disastrous event.
After repeated failures of another brand ATS that came with my RV, I purchased the Progressive Dynamics. I was attracted to it because of the WAGO connectors since the typical failure mode of others is loose bus bar connections. This ATS continues to perform flawlessly and is highly recommended.
Ronald
8/29/2023
The Progressive Dynamics ATS has performed flawlessly. Highly recommend it.
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Robert
3/10/2025
After one year still working great. No issues.