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Get your ride SmartPlug ready. Replaces the fiddly twist lock inlet with a more secure and safe connection. Plug in with ease and have one less thing to worry about. Installs into the same footprint as a standard inlet with no modification needed.
Features:
Specs:
SmartPlug vs. Twist Lock
RV and boat owners have long relied on Twist Lock style connections for powering their rides. For years, it has been the best option for connecting to shore power. It's been reliable, but most know it's not without disadvantages:
SmartPlug's connector addresses each of these concerns and does all of the heavy lifting.
Locking arms grab the inlet, a clamp inside the plug body holds the cord, the inlet cap snaps to the top while in use, and the integrated seals weatherproof the connection. This helps prevent the wiggly, dirty connections that increase electrical resistance, which creates potentially dangerous heat.
Since it uses a square plug face, SmartPlug is able to use flat pins which create far more surface contact, further reducing the risk of high heat and electrical arcing. The square shape and flat pins also make it easy to plug in - no more twisting or guessing if the pins are lined up correctly.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi there, I'm Michael with etrailer.com. Today we're gonna take a quick look at the SmartPlug 30 amp replacement power inlet. This inlet is gonna replace a 30 amp or 125 volt AC inlet on your RV or boat. And this will allow you to plug it in to shore power with a 30 amp SmartPlug power cord that is sold separately, but I do have an example here so you can see how this is gonna work. So these power cords do have a cap that you'll remove and that's gonna help protect them when they're being stored. But if you haven't already upgraded to the SmartPlug, one of the main benefits of this system is that it is going to be a straight plugin.
So unlike your twisting systems that are pretty common on your RVs, this is gonna be very simple to get plugged in even in the dark. You're not gonna have to be able to figure out where your L pin is and get it lined up properly. So you can only plug it in the one way and then it's gonna give you a nice secure attachment there. The straight-in connection is going to also create more connection. So it's about 20 times more contact than your curved system design.
So it's going to reduce the heat caused by electrical resistance with your traditional twist style connections. They don't really have a whole lot of contact, so there's a lot of heat that can build up with those and that can cause issues obviously. So this is going to be a much more secure option for you. That sleeved design is gonna help keep the weight and tension off the electrical pins. So this is going to be a very sturdy option for you.
It does also have triple weatherproof seals that prevent any water, corrosion, and overheating, that sort of thing. So you can see we've got that inner ring there that's going to fit inside here. And then we've got this inner portion so it is gonna be very secure and weatherproof. So again, we have the cap here that's going to help prevent that cord from coming out. So even if you we're to trip over the cord, you're not gonna pull it out.
It's gonna be very securely connected there. The cap also forms a weatherproof seal on the inlet. So when it's not in use, it's going to make sure that your connections stay nice and dry. No worries there. This is made here in the USA of high quality materials that are gonna hold up to your extreme climates, as well as being out on the water if you're installing this on a boat. So it will be very durable for you. The plastics are a UV and heat resistant VALOX 553U resin and our electrical pins are nickel-plated brass and we do have tinned wires that are gonna be resistant to corrosion. So very, very simple to get installed. It does fit right in place of your traditional twist type inlet. So all the holes are gonna line up. So basically just take your old one off and you'll be able to put this one in. You won't have to drill a new holes or anything like that. They do include instructions to show you how to get everything wired. You can see we got that gasket there to make sure we've got a nice tight seal on the backside. So overall, just a major improvement in how you're connecting to your shore power, giving you a much more solid connection, that you're not gonna have to worry about coming loose or getting damaged and also giving you more contact so that there's less resistance, less heat. That completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
I'm giving this Smartplug cord and the Smartplug male trailer wall socket a 4-star rating, but not because the product isn't EXCELLENT. IT IS! On this 2-week camping outing, we have nearly lost our 37-ft. Rockwood Signature travel trailer TWICE to fire, due to the common, everyday 'Twist LOC" RV socket and matching cord overheating while operating our 50-amp trailer on 30 amps (coming between 2-3 amps of 30 amps, but not OVER 30 amps.) The standard 50 amp female power cord end and male plug installed into the side of the trailer MELTED while running on 30-amp service, drawing 26 to 28 amps continuous when both A/Cs were cycled on at the same time. Neither the cord itself nor the trailer's power feed cable ever got hot--ONLY THE CONNECTION where the power cord and trailer plug MEET. It nearly started a fire in the rear wall of our trailer. Melted wall insulation, charred the edges of the fiberglass siding and nearly burned the underlayment underneath the skin. Fortunately, it was NOT a wood product. Both the female cord end and the wall connector plug were melted and charred. Both were replaced by the mobile RV tech who does all of our RV work (I am disabled.) The new cord and trailer plug then melted again 24 hours later. I ordered this Smartplug cord and trailer plug from Etrailer and got it in 4 days. Since new Smartplug cord & plug were installed, I am still pulling 25-28 amps when both A/C compressors are running, but I can feel very little heat on the outside or inside (where the trailer wiring is run into the wall), and the highest temperature I've recorded with the laser temperature gun is 102.5 degrees (high air temperature has been 95 degrees). PROBLEM SOLVED!! The only reason I gave these Smartplug items 4 stars is because of their COST!! The 30ft. Smartplug trailer cord and accompanying male trailer wall socket cost me $718!!! That's pretty close to RIDICULOUS!! They DID, however, SOLVE MY OVERHEATING WIRING CONNECTION PROBLEM!! Read the Smartplug ads and watch their YouTube video from eTrailer (can be reached on eTrailer's website). THEY AREN'T LYING!! Smartplug saved our very expensive RV!!
Very good so far. Installation of the power cord was harder than I thought- but eventually got it done. I am overall very happy with my purchase.
I installed on my travel trailer yesterday and very impressed with the quality of this product. Very happy with this.
I love it, noticeable difference of power when charging.
I found the installation of the inlet easy and the modification of the connector very easy. The instructions were very easy to follow and very comprehensive.
The only issue was the rear cover (pictured) for the inlet could not fit at the front location of may 2019 Airstream Flying Cloud 27 ft. FB. I also installed the cable port.
Was a little tight but lubed inside the plug holes and works great now.
This is one of the best engineered products I have purchased in a long time. The quality is excellent with clear easy to understand instructions. Highly recommend Smart plug products.
better than the stock 50 amp connector. Cutting and fitting 8awg wire was the hardest part to fit into the plug. The rest was easy.
awesome product, highly recommend, etrailer has been great through the whole processit took about 45 minutes to install as my 5yr. old great grandson was helping me,
It is so easy and quick to hook up power when arriving at the campground. Just as easy to disconnect. Had 2 days of rain, just over an inch, and no issues with water intrusion. My wife used it for the first time and said is that it! Yes, it is expensive, but worth it.
Easy to install, very firm connection to trailer. Much, much better than the old twist-on 30 amp plug and inlet
Product appears to be of excellent quality and very sturdy. If only the RV manufacturers would install these at the factory. I will be installing this over the weekend.
Well instead of part number sm67fr I was sent b30assynt I guess that's the upgraded part. But this was 2nd b30assynt that the d rings didn't open enough to except 10 gauge strand . Had to flie d rings some and plastic cover. Will see how long it lasts. It did come in time from e trailer.
I just installed the smart plug on my Airstream this morning. It was very straightforward with the instructions. This new smart plug is easier to deal with when you are attaching it to the cable with the way the lock nut holds the cable in place going into the back of the plug.That was a pleasant surprise. I like the new design. Pleased so far!
I like this way more than the old twist one. Like the 2 levers on the sides that lock it in. Color coded for simple hook up, made my own 15/20amp dog bone in addition to my 50amp. Not looking back.
The installation and instructions were straightforward on this plug. Very happy with e-trailer shipping as well. Always on time and the package always looks good when arrives. The trailer you know what you're doing. Definitely keep up the awesome work.
This is the exact part I needed to replace the original Smart Plug receptacle on my 2023 Basecamp 16x (which became damaged due to a loose wire). Customer support, price, and shipping speed from etrailer was great. I will say the new rear cover on this item was a little tricky to install, but it was doable with a little patience.
The quality and design is fantastic. The cover feels soild not flimsy or cheap. Easy install . Have not taken it out yet but looking forward to going out and not dealing with the threaded ring that never felt secure.
I thought this was rather expensive until I received it. Very well built and so much more solid than the plastic one that came on my 5th wheel. My only complaint is that I wish there were an option for a 90-degree bend so the cord would hang from the plug rather than stick straight out. The weight of the 50AMP cord may cause an issue over time, but we will have to wait and see. My old connector was at 90 degrees, and it appears they offer this in the 30AMP option.
Easy to install and so much better of a system to hook up power, plug and go. Highly recommend the Smart Plug for safety and ease of use, plus looks good too.
Outstanding quality and easy to install
No complaints. Got what I ordered, installed it and it worked. SmartPlug 30amp white.
Wes
4/6/2025
After a year product is still working and the cover which is what broke on my last one where it wouldn’t stay shut is still working great.
Kate F.
4/7/2025
This Smart plug inlet plug is true to size. I've used the Smart Plug system on other RVs and am familiar with the better contact area. I was delighted to see that this plug fit inside the connection center of my campervan, and still be able to close cover with no bulging.
Jeff F.
5/2/2025
We continue to enjoy this smart plug conversion. It has been no problem and the item is like new from moderate use. Our manufacturer has added this feature on the newest model year, they must have noted many of us converting. I would buy this again from E-Trailer.
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Shean
7/17/2025
Still proving to be an outstanding option for our RV shore power needs!