Product Experts Available Now!
Call 1-800-940-8924
SmartPlug Connector Plug Assembly for RV Power Cords - 50 Amp Female
(43 reviews)
Price: $141.61
SmartPlug
SmartPlug Connector Plug Assembly for RV Power Cords - 50 Amp Female
$141.61
Retail:$218.48
You Save: $76.87
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
- All Info
- Reviews (43)
- Q & A (0)
- Photos
SmartPlug Accessories and Parts
- Shore Power Cord
- Plugs and Sockets
- 50 Amp
- SmartPlug
Turn your 50-amp shore power plug into a SmartPlug cordset by clipping off the inlet end of your power cord and wiring in this new connector. Plugs in without twisting and locks in place with side clips.
Features:
- Female connector wires to your existing 50-amp RV power cord
- Converts your power cord to work with a SmartPlug 50-amp inlet (sold separately) on your RV or boat
- 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 into place with audible feedback
- Interior clamps hold wires in place and bears weight of the cord
- Seals in plug face and around cord keep equipment protected from the elements
- 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 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 using included hardware and illustrated instructions
- Cut the old twist lock style connector from your shore power cord to wire new plug
- Made in the USA
Specs:
- Amperage: 50 amps
- Voltage: 125/250 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:
- 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.
BF50 SmartPlug 50 Amp - Female Connector Assembly
Item # SM36FR
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Product did not meet expectations
- Wrong item was ordered
- Did not arrive in time
Ratings & Reviews
4.8
43 reviews
by:
Jeffrey
04/28/2026
This worked great to build a lightweight 30 amp shore tie for our 50 amp Airstream so we don't need to carry to monster 50 amp cable (except if we anticipate using both A/Cs.) Easy to assemble; just needed to jumper the two hot legs to power the whole camper. I bought a 50ft 30 amp cable, cut it at 30 feet for my main cable, and made a 20ft extension with the rest in case we need it.
by:
Anthony
11/28/2024
I purchased their SmartPlug unit because I wanted to make a shorter SmartPlug cord. The original 30 foot SmartPlug cord i purchased in 2017 from a SmartPlug dealer at the Airstream international Rallyproved to be too long for 90% of the hookups I made plus 30 ft. of cord is somewhat heavy and awkward. I made a shorter 15 foot cord by buying a shorter cord from eBay/Amazon??, Voila. !!1 Problems solved and the new cord works excellently.cutting off the female and keeping the male fitting and then adattaching the SmartPlug unit I bought from you.
by:
John
03/21/2026
Expensive unit because it is a proprietary design. Wish it had the LED indicator lights like the complete cord has. Directions should be clearer. Depending upon how the power panel of your RV is wired you may need to add a jumper between the red and black blades of the plug. Like all Smart Plug products the quality is quite high.
by:
John
02/25/2026
My order arrived intact and on time. The communication regarding shipping status was terrific from order placement until package was received. I am now a etrailer customer for good!
Mike L.
2/25/2026
Thanks John, we appreciate you! Thanks for checking in, and thanks for the kind words!
by:
Gerry
06/11/2026
This smart plug connector is excellent quality. A little expensive but worth it.
by:
Hitch
05/18/2026
It would have been nice if the black and red terminals were reversed as they are in the wire. It's really hard to cross those two wires to get them into the slots. Other than that fantastic item
by:
Rick in FL
12/16/2025
This product does exactly as described. I used it to create a lighter weight cord for use when I only have 30 amp service in place of using the heavier 50 amp cable with a dogbone adapter. Only downside is that it is a bit pricey.
by:
Daniel
03/22/2026
This is a very safe plugin over the original one that came with the trailer, it is a must do upgrade for any RVer out there.
Works very well, easy to install.
Works very well, easy to install.
by:
Henrik
02/25/2025
Very well made product and delivery was fast!
Henrik
2/27/2026
Its been great! Very secure connection.
by:
Donald
02/26/2026
It was exactly what I was looking for.
by:
Patrick
05/26/2023
I love this plug. After owning it for a year, it has held up well. Easy to plug it in and unplug it. Installation was a bit challenging working with the heavy 4-wire 50 amp shore power cord. The only improvement I can think of is I wish the company had a 90° version. With the heavy wire coming out of the plug, it sticks out quite a bit from the side of the trailer. I am afraid that it could get bumped into by people next to me.
by:
Bill Z
09/08/2023
Did the job with making my own one piece 30 to 50 amp adapter for my airstream. Took a 10/2 with ground extension cord 50’ long and cut off the female end and wired the smart plug.connector. Had to put a jumper between L1&L2 used a piece of black #10 Romex. I’m satisfied!
by:
Andrew
09/18/2024
This is my second RV that I have installed the SmartPlug connector on. I needed an additional female connector and etrailer was the obvious go-to supplier due to their quick shipping and fantastic customer service.
by:
Robert2023
09/02/2023
I was replacing an existing Smartplug on two cables and was a bit concerned this might not be the same. It was the exact original and installation went great on the second one. One word of advice (why the first was a challenge) - since I was replacing Smartplugs on older cables, the new/shiny cable cover was now rougher to the touch. The new plug sleeve will NOT slide easily over a non-smooth surface. On my second cable, I used a very fine sand paper to smooth the rough spots in the cable, and the install took half the time as the first cable (where I had not done this).
by:
Pnotty
12/03/2024
Replaced the old plug and twist version that came with RV because I kept getting grounding errors from the Surge Guard. Since replacing have had positive connections. Like the locking tabs and not having the cross thread issues with the previous locking ring.
By the way, make sure you have a surge protection device that doesn't send power unless your connection is correct. Would not have known I had no ground otherwise.
By the way, make sure you have a surge protection device that doesn't send power unless your connection is correct. Would not have known I had no ground otherwise.
by:
Roger
09/17/2022
LOVE, LOVE, LOVE this transition from those stupid plastic screw-on plugs. This is relatively easy to install and a snap to use (literally). A great product.
by:
Jody
06/30/2025
Great product and even better service
by:
Joe
07/19/2025
Seems like a real solid connection. Can't wait to try it out.
by:
Ronald
02/05/2023
Making a short cord to convert 50 to 30 amp for my Airstream. Plug is high quality
by:
Michael
06/30/2025
Michael
7/1/2026
Working great, no issues at all.
Jerry B.
7/1/2026
@Michael Love to hear it! Those SmartPlugs are great to use at a campsite and keep you protected. Where have you been traveling and using it?
by:
Daniel
07/20/2024
Easy install. It has been working flawlessly for a year now.
by:
James
08/17/2024
Part was as described and exactly what I needed.
by:
Roger
03/22/2024
Joshua was very helpful, with a great attitude and making it an easy process. He helped me get what I needed in a very professional way. Both packages arrived on time as indicated. Thank you.
by:
Patrick
08/03/2024
Heather A.
8/15/2024
I was just wondering if I could help you with anything Patrick?
25
43
true
Show More Reviews
See what our Experts say about this SmartPlug Accessories and Parts
- Could SmartPlug 50 Amp Female Plug Wire to 30 Amp WireHey Bernie, it sounds like you are asking if a 30 amp cable could be wired to the SmartPlug Connector Plug Assembly for RV Power Cords - 50 Amp Female # SM36FR that you referenced. Yes you could do that or if you wanted to wire it to a 30 amp dog bone you could do that as well. You are one of several people looking for a 30 amp solution for the SmartPlugs though so hopefully they come out with something sooner.
view full answer... - Is SmartPlug 50 Amp Female Plug Assembly Available By ItselfThanks for reaching out, Glen! To get the plug side of the SmartPlug RV Power Inlet - 50 Amp # SM56FR you were looking at, you just need the 50 Amp Female Plug Assembly # SM36FR.
view full answer... - Looking for Replacement 50 Amp Female SmartPlug Power CordHey Matt, you can buy just the SmartPlug cord-end connector that you are looking for with the SmartPlug Connector Plug Assembly for RV Power Cords, 50 Amp Female # SM36FR. It's specifically intended for exactly what you're planning: take an existing standard 50-amp RV shore-power cord, cut off the RV/inlet end, and wire SM36FR onto the cord. It then plugs directly into the SmartPlug inlet already installed on your RV.
view full answer... - Looking for 90 Degree Smartplug RV Power CordHey Michael, while we don't have a replacement plug that is 90 degree we have a 30 foot long 50 amp power cord that has a 90 degree connector on both sides with the part # SM54SB if that's something you'd be interested in.
view full answer... - Can SmartPlug Connector Plug Assembly for RV Power Cords SM36FR Work with 30 Amp CableHey Richard, this would be powering a 50 amp camper off 30 amps, so this would be less amperage not more. However plugging into 30 amps means half of their panel gets zero power, and the other half gets 30 amps instead of 50, so you should stick with a 50 amp cord and outlet at campground if at all possible.
view full answer... - Is The 50Amp SmartPlug RV Power Cord Available Is Lengths Under 30'? Currently SmartPlug only offers their 50 amp cord in a 30' Length # SM86FR. We do have a Replacement End # SM36FR you could attach to a 50 Amp Power Cord # A10-5025END. This particular cord is 25' but you can cut it down before adding on the SmartPlug end.
view full answer... - Gauge of Wire in the SmartPlug RV Power Cord part # SM36FRI checked with SmartPlug and they stated that the RV Power Cord part # SM36FR that you referenced has 10 gauge wires and the core is 100 percent copper.
view full answer...
Do you have a question about this Accessories and Part?
Info for this part was:
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
Chris R
Updated by:
Wilson B
Updated by:
Cody B
Edited by:
Amanda M
Written by:
Halie H
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Anthony
11/29/2025
A while back I bought a Smart Plug cord but their cordd is way to long and heavy to handle. My solution was to buy a 10 ft 50 amp cord, cut off the female end and attach a smart pul so that it works with my Airstream set up. Attaching the plug to a new cable was a struggle but it got done. N ow I have a cable that is light weight and easy to handle and store.