Arrives before Christmas 
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This transfer switch automatically changes from inverter to shore power when you hook up at the campground. 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 inverter to shore power to conserve battery life. The switch includes (2) 50-amp legs, which allow you to use up to 100 amps on a shore power service. The legs are rated at 120V each and allow for 240V service. 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 also has cord knockouts for connections.
There are several wiring configuration options, depending on the electrical application inside your RV. These include installation between shore power and an on-board generator, an inverter and an alternating source, or even a hybrid system using another transfer switch for designated circuits.
California residents: click here
Perfect replacement as ordered. Quick delivery and great customer service.
I converted a system where I had to plug my shore line into a separate socket for the generator. This meant I was always wrestling with the 20' shore line in it's storage compartment. Adding this switch allows me to have a totally separate shore line that I can store much easier. Switching from shore power to generator is now a breeze
Worked great, better built than my original one.
Thanks
Quick and free shipping
Installation was trouble free and easy.
Excellent phone assistance with getting the correct part.
Very good service , Kimberly was very helpful in getting me what I needed. This is my go to for parts. The waist to get it in the mail ok . Thanks again Ken
One important thing I learned from this adventure is that 30 Amp outlets for dryers and electric ranges are not wired like 30 Amp outlets for RVs. The RV outlet is wired as single phase 120 volt service while 30 Amp outlets for dryers and ranges are wired for dual phase 208 Volt service. Sadly, I only learned about the different wiring scheme after I had fried my RVs originally installed ATS and the new ATS I received from etrailer. It took a lot of troubleshooting and testing, along with some intense internet surfing, for me to learn why I had thoroughly destroyed two ATSs. So, for future purchasers of RV ATSs I recommend validating the wiring of the service outlet they plan to use. It was a $[XX] lesson for me, and that is just the cost for parts.
Brooke M.
4/22/2025
If it's any consolation, we have all made mistakes, Orin. Sorry all this had to happen. But thank you for sharing your experience! You just might save someone else from doing the same thing
Its all about great people. Paula is the reason along with her support team that E=trailer is number one. Right Parts on time.
Best Regards,
I had a transfer switch fail in my 2005 Alpine coach. I replaced it with this unit. Was essentially a direct replacement. This unit was little smaller and had to make different ground legs, otherwise seamless install. If you read the reviews about buzzing and what not, just skip them. No noise no heat nothing but perfect transfer of power from gen to shore.
Each time I have ordered from etrailer the product was as advertised, arrived in a timely manner and worked perfectly.
Todd
10/7/2021
Great product
Everything went smooth and Ashley was a great. She explained how much shipping was and got it out Next Day Air. Everything matched up at the end of the day with what she told me.
Great product at great price. Original transfer switch was having problems, and no longer in production.
Simple, effective. Did what I needed it. Takes a few seconds to transfer over, but expected.
Well, I had to buy this last one to replace the one I bought from etrailer earlier this summer. That one tripped and went bad on me. Smelt like burnt plastic.
Solid metal Box With easy diagram to follow for hooking up your connections. It can easily handle 6/3 wire.
Order showed up a little early. Love that. Haven’t installed it yet but looking forward to it and expecting zero issues.
Good product. No worries.
Working good had no issues
Seems to be working just as anticipated.
Melissa was super helpful. Shipped on time and was a pleasure doing business with you!
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James
1/19/2025
New switch has held up to the rest of time. Not having to plug my shore line into a socket to use the generator has been a true convenience. I can now easily shift to a lighter gauge shore line depending on power needs. If I dont need my AC I can get away with a simple and light weight 12 gauge line.