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  1. Shore Power Inlet
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SmartPlug RV Power Inlet and Connector - 30 Amp - White
SmartPlug

SmartPlug RV Power Inlet and Connector - 30 Amp - White

Part Number: SM77FR
In Stock
$250.20
Retail:$278.00
You Save: $27.80
Shore Power Inlet
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Easily replace your inlet and rewire your power cord for a SmartPlug connection that is both safer and easier to use. This package contains everything you need to upgrade your ride for a new generation of shore power connection. Great Prices for the best shore power inlet from SmartPlug. SmartPlug RV Power Inlet and Connector - 30 Amp - White part number SM77FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (181)
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SmartPlug Shore Power Inlet - SM77FR

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

Easily replace your inlet and rewire your power cord for a SmartPlug connection that is both safer and easier to use. This package contains everything you need to upgrade your ride for a new generation of shore power connection.


Features:

  • Inlet and connector upgrade your shore power setup to the SmartPlug system
    • 30-Amp Inlet replaces the existing socket on your boat or RV
    • 30-Amp connector lets you modify your favorite power cable
  • 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
  • Multi-point locking system removes strain from connection points
    • Side levers snap with audible feedback and keep plug in place
    • Interior clamp bears weight of the cord to support wiring in the body
    • Inlet cap snaps down onto plug body when in use to hold cord in place and reduce strain
  • Integrated seals keep your equipment safe from the elements
    • Seals in plug face and around cord weatherproof your connection when in use
    • Inlet cap seal keeps out rain and debris when traveling
  • Flat electrical pins increase contact area compared to curved pins in twist locks
    • Reduces heat caused by electrical resistance
  • Blue LED light illuminates to indicate power is flowing
  • High-quality materials hold up to extreme climates or out on the water
    • Marine-grade stainless steel exterior metals 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 using included hardware and illustrated instructions
    • Inlet sized to fit standard flanges so you can use the same screws and holes
    • Cut the old twist lock style connector from your shore power cord to wire new plug
  • White 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.




B30ASSYPW SmartPlug 30 Amp - Female Connector & Non-Metallic Inlet Upgrade Kit - White





Customer Satisfaction Score:

Ratings & Reviews

4.7

179 reviews
Review sort icon
Easily replace your inlet and rewire your power cord for a SmartPlug connection that is both safer and easier to use. This package contains everything you need to upgrade your ride for a new generation of shore power connection.

by:

This was a great replacement for my RV power reel. The power reel slip rings were starting to fail. Never liked the system from day one so when I found this power inlet and connector I figured this would be a great replacement. No more slip rings! Seems well made. Easy to install. Instructions were clear and accurate.



by:

Installation was straightforward and its a really strong connection....simple plug it straight with no twisting...snaps in place and stays in strongly....simple press the side tabs to release easily.got it all done in 1 hour on my 2021 salem hemisphere



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Moderately easy to do.



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Great, thank you



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fixed all my issues



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Purchased connector at customer's request. I'm impressed by the quality of the product.



by:

This plug should be standard in the RV industry hands down safer, and great quality. I'd never use anything else on an RV.



by:

eTrailer is the best. Great website and product videos.



by:

solid construction- all parts fit well



by:

This was a Christmas gift for my son. He has been pleased with this product.

Debbie profile picture

Debbie

12/11/2025

This was a gift for my son. It is working well, a year later!



by:

Has been a great upgrade. Much easier than the original plug.



by:

Easy to install but very difficult to get both side latches to engage - requires a lot of force to latch completely



by:

We love the product, easy connect and disconnect. Solid and secure. Install on our trailer was hard as they didn’t use romex style wire but used power cord like the out side. Your device had to be altered,because it won’t accept larger wire with an outside diameter larger than a romex style. Would be better in the future if it included another adapter piece for larger diameter. I had to grind a great deal of material away to make it all fit.



by:

Product was delivered faster than expected. Detailed instructions were provided to make the transition easy as possible. My only complaint was the rubber grommet to weather proof the connector was a bit oversized and loose.



by:

We needed a new power plug on the way to the RV park where we needed it. The old one got damaged and the new plug I wanted came with the latest "Smart Plug" companion socket which just pushes on, a fantastic upgrade. The package arrived at the RV park on the date etrailer predicted it would arrive. I was worried because it was over a weekend but etrailer shipped it on a Sunday so it arrived on time. I was able to install it at the RV park with the help of fellow RVers. I highly recommend the Smart Plug upgrade. It is so much better to just push the plug in and hear it click into place.



by:

Installation is pretty straightforward. One thing to note is that installing the connector to your existing power cord is more difficult than it appears. I used foaming hand soap but it is too diluted. Watched a video of a person showing the installation process that they used and it worked! Instead of holding the connector with one hand and the cord in another to push the two together, I placed the connector on a solid surface, used liquid soap, and a grippy glove and was able to shove the cord through the strain relief rubber fitting. Once I was able to do that, it made all the difference.

Also, my original inlet had a round template with three screws holding it to the RV. The SmartPlug inlet is rectangular and has four screws holding it to the RV. I obviously had to drill new holes, but I went to the hardware store and purchased four #8 x 1” 32 stainless steel screws and nylon lock nuts to secure the inlet plug. My trailer is fiberglass, so I will also place a bead of caulking around the top and sides of the the inlet template to ensure a water tight connection.

Lazer S. profile picture
Etrailer Expert

Lazer S.

3/17/2026

Thanks for the tip, Mike! I've messed with a few of these and getting that cord through is definitely a pain, so this is very good to know! ^___^ What kind of trailer did you install this on?

Mike profile picture

Mike

3/17/2026

@LazerS I installed it on our 2023 Escape 21C travel trailer

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See what our Experts say about this SmartPlug Shore Power Inlet


Info for this part was:

Employee Joshua S
Video Edited:
Joshua S
Employee Chris R
Video Edited:
Chris R
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Cody B
Updated by:
Cody B
Employee Amanda M
Edited by:
Amanda M
Employee Halie H
Written by:
Halie H
Employee Michael B
Installed by:
Michael B

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