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SmartPlug RV Power Inlet - 30 Amp - Gray
SmartPlug

SmartPlug RV Power Inlet - 30 Amp - Gray

Part Number: SM37FR
In Stock
$128.70
Retail:$143.00
You Save: $14.30
Shore Power Inlet
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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. Great Prices for the best shore power inlet from SmartPlug. SmartPlug RV Power Inlet - 30 Amp - Gray part number SM37FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (232)
  • Q & A (0)
  • Videos (2)
  • Photos

SmartPlug Shore Power Inlet - SM37FR

  • 30 Amp
  • Power Inlets
  • Gray
  • SmartPlug
  • RV
  • Standard Connector
  • Plastic

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:

  • Inlet lets you plug in your SmartPlug cord to power your RV or boat
    • 3-Prong male inlet accepts SmartPlug 30-amp female connectors (sold separately)
    • Cables lock in place for secure connection
  • Straight-in, single-step operation means no more twisting or fiddling with locking rings
    • Plug shape takes guesswork out of connecting so it's simple to use, even in the dark
  • Flat electrical pins increase contact area compared to curved pins in twist locks
    • Reduces heat caused by electrical resistance
  • Inlet cap snaps down onto plug body when in use to reduce strain
    • Helps stop plug from being yanked out accidentally
  • Rubber seal keeps inlet safe from the elements when not in use
  • High-quality materials hold up in extreme climates or out on the water
    • Marine-grade stainless steel components hold up season after season
    • Nickel-plated brass electrical pins and tinned wires resist corrosion
    • Plastics are UV and heat resistant Valox 553U resins
  • Easy installation - sized to fit standard inlets so you can use the same screws and holes
  • Gray color
  • Made in the USA


Specs:

  • Amperage: 30 amps
  • Voltage: 125 volts
  • 7-Year warranty


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:


Twist-Type Design Problems

  • Curved pins make minimal surface contact, increasing the amount of heat generated
  • Locking ring can be prone to breaking, cross threading, and stripping out
  • Faulty locking ring puts strain on the connection
  • Wear and debris can loosen the fit, further decreasing surface contact
  • Circular plug shape isn't user friendly and takes some awareness of the orientation of the pins to insert correctly

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.




BM30PG SmartPlug 30 Amp - Non-Metallic Inlet w/ Gray Cover Assembly





Video of SmartPlug RV Power Inlet - 30 Amp - Gray
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for All You Need to Know About the SmartPlug RV Power Inlet

Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at the SmartPlug 30 amp RV Power Inlet. Now, this inlet here will let you plug in your SmartPlug cord to power your RV or your boat. You can see it is a 3-prong male inlet, and it'll accept the SmartPlug 30 amp female connectors which we do sell separately on our website, and I did wanna pop up an insert just to show you, there's one of those connectors on that cord there, and that's what'll plug right into here. Now, this inlet has a multi-point lock system for secure connection of that female connector, so when you plug that in, you'll notice there's cutouts here at the bottom on each side, so when it plugs in, it'll lock it into place to keep it connected. It is a straight-in, single-step operation, means no more twisting or fiddling with locking rings, and this design or the plug shape will take any guesswork out of how you connect it, so it's very simple to use even in the dark.

The flat electrical pins, they'll give you 20% more contact area compared to the curved pins and twist locks, and this will reduce the heat that's caused by electrical resistance. The cover on this, you can see the cover, this inlet cover will snap down onto the plug body, you can see right here, once you plug your plug in, this will go down over it and help hold that plug into place, helps reduce any strain on the cable, and it helps stop the plug from being yanked out accidentally. And if you noticed on the top of that cover, there's a rubber seal here that'll go down over this and help keep it safe from any elements when it's not being used. Now, they do use high quality materials which will hold up at extreme climates or out on the water. They use marine-grade stainless steel components that'll hold up season after season, they use nickel-plated brass electrical pins and tinned wires to resist corrosion, and all the plastics on this are UV and heat resistance.

It is a very easy installation, only requires four screws and three wires connection, and it is size to fit standard inlets, so you can use the same screws and holes. If you noticed, it does include this nice rubber gasket, and this will help seal the inlet when it's installed. So basically, what you'll do is put this up here, and then when you go to install that, that'll help seal it. This is a nice gray color, it is made in the USA. Few specs on this, amperage on this is 30 amps, voltage, 125 volts.

But that should do it for the review on this SmartPlug 30 amp RV Power Inlet..

Ratings & Reviews

4.8

232 reviews
Review sort icon
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.

by:

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.



by:

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!



by:

So much easier to connect and disconnect. This should come standard on all RVs.



by:

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.



by:

Perfect replacement for the burned out forest river ring version- the indicator light is awesome and secure click locking mechanism guarantees there is positive contact!



by:

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.



by:

Smart plug arrived missing set screw. I called Smart Plug customer service number and was told they would immediately send a replacement for the missing set screw to my home. I will not be home until November.
I asked if they would send a replacement next day and was told no they don’t do that.
I now have a smart plug to replace my defective factory plug that I can not install until November.
This is in no way an e-trailer problem.
e-trailer has done nothing wrong.



by:

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.



by:

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.



by:

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.



by:

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!!



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On time and exactly what I needed



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Fantastic product and company



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Easy process, glad I bought thru etrail er.com.



by:

Received it quickly, easy install.



by:

Quality product. Easy installation



by:

very high quality and easy installation.



by:

Best plug ever. Industry should all change to this plug!



by:

Works as indicated. Easy install.



by:

Exact replacement great service



by:

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.


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See what our Experts say about this SmartPlug Shore Power Inlet

  • Is The 30 Amp Smart Plug Available With A 90 Degree Plug?
    Hello Ed, thanks for reaching out. The 30A SmartPlug shore power cords, including # SM37FR, are only available with a straight coach-end connector, so there isn’t currently a 90-degree option for the RV side. I have heard that Smart Plug has plans to develop a 90 degree version, but there is currently no ETA for that.
    view full answer...
  • Recommended 30 Amp SmartPlug Angled RV Power Cord
    Hey Mike. The 30 Amp SmartPlug Angled RV Power Cord item # SM22YB is not available in a combination kit. You'll need to purchase one of the power inlets separately. We have three different color options that I have listed below: SmartPlug RV Power Inlet - 30 Amp - Black item # SM97FR, Gray item # SM37FR, and White item # SM57FR. What kind of trailer do you have? You can add this information, along with any other questions you have, where it says Reply to Jerred H.
    view full answer...
  • Mounting Hole Dimensions of a 30 Amp SmartPlug RV Power Inlet
    Hey Jaime, welcome back! I can give you the dimensions of the 30 Amp SmartPlug RV Power Inlet item # SM97FR so you can compare them to the ones on your 50 amp power inlet but I can't tell you if it's going to match up to the holes. I don't have anyway of knowing what brand 50 amp inlet you have. SmartPlug markets their power inlets as being able to match standard twist-lock inlet footprints but I strongly recommend taking some measurements to confirm. The mounting holes are spaced 2.44"...
    view full answer...
  • Replacement SmartPlug Power Cord Connector Plug Assembly
    SmartPlug labels their parts backwards so I assume you're looking for the SmartPlug Connector Plug Assembly for RV Power Cords - 30 Amp Female # SM47FR, which would go on the power cord. If you're looking for the inlet then you would need one of the following color options: White # SM57FR Gray # SM37FR Black # SM97FR Stainless Steel # SM24FR
    view full answer...
  • Availability of 30 Amp 110 Volt Power Inlet
    The SmartPlug RV Power Inlet # SM37FR that you referenced is a 30 amp power inlet designed for 110 voltage like you also mentioned.
    view full answer...

Do you have a question about this Shore Power Inlet?


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Cody B
Updated by:
Cody B
Employee Amanda M
Edited by:
Amanda M
Employee Jonathan Y
Video by:
Jonathan Y
Employee Halie H
Written by:
Halie H
Employee Kevin C
Test Fit:
Kevin C

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