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  1. RV Transfer Switch
  2. Progressive Dynamics
  3. 50 Amp
  4. 120V
  5. 240V
50A Transfer Switch - Metal Box - 120V/240V AC

50A Transfer Switch - Metal Box - 120V/240V AC

Item # PD52
Our Price: $212.35
You Save: $69.61
RV Transfer Switch
Shipping Weight: 8 lbs
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This transfer switch automatically changes from shore power to generator power when needed. Protects your electrical system from AC power backfeed. Great Prices for the best rv transfer switch from Progressive Dynamics. 50A Transfer Switch - Metal Box - 120V/240V AC part number PD52 can be ordered online at or call 1-800-940-8924 for expert service.
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Progressive Dynamics RV Transfer Switch - PD52

  • 50 Amp
  • 120V
  • 240V
  • Progressive Dynamics

This transfer switch automatically changes from shore power to generator power when needed. Protects your electrical system from AC power backfeed.


  • Transfer switch automatically reroutes your RV's AC input from shore power to generator power when activated
    • Can also be used with an inverter in place of a generator
  • Time delay function only allows one input to feed your RV's breaker panel at a time
    • Protects system from AC power backfeed
  • 50-Amp double pole switch includes 2 separate 120V legs
  • Durable metal case with cord knockouts
  • Made in the USA


  • Amperage:
    • Line rating: 50 amps
    • Neutral rating: 70 amps
  • Voltage: 120V/240V
  • Dimensions: 10-3/8" long x 6-7/8" wide x 4-1/2" tall
  • Weight: 7 lbs
  • 2-Year warranty

transfer switch

This transfer switch has been pre-wired to automatically change the primary source of AC current from shore power to generator or inverter power when activated. It has a 50-amp double pole switch that includes (2) 120V legs, which can provide 240V service if needed. 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.

transfer switch open

The metal case has cord knockouts for the various connections.

Automatic Transfer Switch Installation

The switch wires to your shore power input and generator or inverter input. Both inputs are wired to the AC panel.

PD52V Progressive Dynamics Transfer Switch - Metal Enclosure - 50 Amp - 120V/240V AC

Replaces PD52

Installation Details PD52 Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

50A Transfer Switch - Metal Box - 120V/240V AC - PD52

Average Customer Rating:  4.8 out of 5 stars   (74 Customer Reviews)

This transfer switch automatically changes from shore power to generator power when needed. Protects your electrical system from AC power backfeed.


Ordered a transfer switch for my Newmar diesel pusher. The model Newmar recommended was in stock. It showed up on time as promised. Install was relatively easy.
Highly recommend etrailer!



Transfer switch has perfectly...


This transfer switch replaced my failed TS that had the built in surge protection that was a widespread issue. It has been working great for over a year now.


This transfer switch was recommended by our RV specialist. It was a perfect replacement for our 2006 Monaco Diplomat. Although, he was amazing in how he mounted it. (Also note that I appreciate the 1 year product review. Most companies ask for a review even before you receive the product. That makes no sense. 1 year is good.)


The switch was a replacement for one that was fried due to fluctuating ground (shore) power during a major mid-west storm last week that put thousands without power. I called etrailer (our internet was out as well) and found that they had one in stock. I ordered it and it was on my doorstep 5 days later...which isn't bad for something that had to be shipped via ground from Salt Lake city. It's an exact replacement and it arrived in good condition due to the excellent packing.

I've ordered before from and they usually have what I want in stock. I live about 100 miles from the STL area and the shipping is usually 2 days even though they advertise that it might be 4-5. The company has good technical support and for certain items, good installation videos.


Order was on time,install was simple.



It is working fine, the hard part was the install.


All the information I needed was easy to find and their live chat helped confirm the part I chose. very helpful, much appreciated.


etrailer had the part I needed but was incapable of shipping it overnight. The order was placed correctly as confirmed by the agent I contacted to find out where my order was. The order was shipped on Friday and not delivered until Monday. Because of this level of service I had to sit for 5 days without power.


Although where I had to install this device was difficult, it works great!!


Good looking box, great shipping


Works great. Easy to install.


arrived on time and fixed the problem


The transfer switch was a direct replacement for a unit in a 2020 travel trailer. To my way of thinking that was premature for the age of the unit. Unit was easily replaced and was functioning well when the trailer was recently sold.


why are the nipples stamped the wrong way,, shows that no one is doing quality check , very poor.


PD52 was ordered on 7/12/20 via internet. No contact with me till I called on Thursday, 7/16 and order was found. Paid for 4-6 day delivery. Shipping e-mail received on 7/17/20 via UPS. Package delivered on 7/21/20. Item was inside larger cardboard box with no package material, bouncing around and box was damaged. Hoping electronic components are OK. To be installed on 7/24/20 by electrician. Very first problem with e-trailer after many orders.


The transfer relay was as represented and works great. I didn’t have generator power or shore power. In fact 240v was in my outlets in half of the motor home. My original transfer relay had one relay for each leg. This one has only two, and works great. It took a little to be sure I was wiring it correctly. I also replaced the box to plug in my shore cord. A previous owner had pulled away with the cable still attached. I used a “drill to fit” plastic box from a big box store. I have both generator and shore power.


etrailer customer service is AMAZING. I had a few questions & concerns about the product & they were very knowledgeable & made sure I understood everything.


The Transfer-Switch was easy to install and a very well made switch. American Made products or the only thing I want to purchase .


Perfect fit for what we needed!


We’ve ordered from etrailer before and the speed of their shipping is unbeatable so we knew who to order from when our generator transfer switch failed from a power surge. They came through for us once again when we were in a bind! I paid for 2 day shipping and it was packaged and shipped immediately and delivered exactly when they estimated. It was packaged well and functions exactly the way it should. Very pleased!! Thank you


Unit was as expected. R&R with zero issues. Thank you!


So far it’s been working as expected, it fits in the same spot as the other one. No humming no sounds other than when power goes out and you hear a loud thump.


Since the previous transfer switch was discontinued I purchased this item. Had to trouble shoot just how connections went however not very difficult. Unit has been in for one year with no issues.


I bought a nice, but used diesel motorhome. The years old PD52 stopped working after two camping trips. The past owners had left a new auto switch, a different, more expensive, brand. I installed it and I wasn't happy with it.

I ordered a PD52, two day delivery. It came on schedule and I am back up and running again!

I am going to order another since the price is right! Good to have a spare although I am confident it will be a long while before I need it.

I like this product!


Direct replacement for the factory unit. Has worked great.


Shipping, and product was exactly as was stated to me by Jessica.

Show More Reviews

See what our Experts say about this Progressive Dynamics RV Transfer Switch

  • Replacement Transfer Switch For A Progressive Dynamics PD52 In A 2019 Jayco North Point
    The correct replacement transfer switch for your PD52 transfer switch in your 2019 Jayco North Point, is the: - Progressive Dynamics Transfer Switch - Metal Case # PD52. This transfer switch can automatically reroute your RV's AC input from shore power to generator power, and can also be use with an inverter in place of a generator. Attached is a review video for you to check out as well.
    view full answer...
  • Replacement Transfer Switch for Parallax ATS501
    Your Parrallax ats501 transfer switch is a 50 amp transfer switch like what the Progressive Dynamics Transfer Switch - Metal Case - 50 Amp # PD52 that you referenced was designed to replace. This would be a solid choice that would work great and be very reliable long term. I attached a review video for this for you to check out as well.
    view full answer...
  • Progressive Dynamics Transfer Switch and Inverter
    Yes, Progressive Dynamics Transfer Switch, # PD52 automatically changes from shore power to generator power when needed and can also be used with an inverter type generator or an invertor. To isolate the charger you would need to place a switch in the circuit.
    view full answer...
  • Could Progressive Dynamics 50 Amp Auto Transfer Switch be Used in Home
    There's no reason the Progressive Dynamics Transfer Switch # PD52 couldn't be used in a home application. This is a 240 volt/50 amp rated transfer switch that is safe to use in an RV or a house.
    view full answer...
  • Recommended Transfer Switch For 50 Amp Shore Power
    Since you'll be pulling 50 amp service you'll want the Progressive Dynamics Transfer Switch - Metal Case - 50 Amp - 120V/240V Item # PD52. This transfer switch will automatically switch over from shore power to generator power and back as needed. There will be a 25-40 second delay to ensure the power coming from the generator is properly transitioned to prevent damage to any components. You'll be able to plug your 30 amp generator into this transfer switch but will not be able to run both...
    view full answer...
  • Can Progressive Dynamics Transfer Switch PD52 Have Shore Power on Normally Closed Connection
    I reached out to Progressive Dynamics to find out if you could have the shore power on the Normally Closed position for the Progressive Dynamics Transfer Switch # PD52, and this is what I was told via our tech contact: "I think there is confusion here; the PD52 uses two normally open contactors not a single relay with normally closed contacts in the inactive position as with the PD51. Second, the RV transfer switches are designed as "Generator Priority" that means that whenever AC voltage...
    view full answer...
  • Transfer Switch for 2021 Keystone Montana 3781RL that Can Use 50 and 30 Amp Power
    Yes, since the Progressive Dynamics Transfer Switch # PD52 is 120 and 240 volt compatible this will work fine with 30 amp as well as 50 amp. This 50 Amp transfer switch will allow you to hook up the 30 Amp shore power to the HOT 1 connection in the box. When you decide to upgrade to a 50 amp setup, you will use HOT 1 and HOT 2.
    view full answer...
  • PD52 RV Transfer Switch Wiring
    Regarding the Progressive Dynamics # PD52 Transfer Switch, you should follow the directions provided in the installation guide, provided in the link below, and available on the product description page. If you are not familiar with electrical circuits I would advise that you call upon a electrician or qualified RV Technician to assist you with any changes or additions. The product pictures include the general wiring diagram and where the wires from shore power connect and where the generator...
    view full answer...
  • Does Using PD52 Require Additional Transfer Switch When Adding Inverter
    The PD1600 series contains an internal transfer switch. We do not recommend feeding the output of the inverter back to the MAIN AC distribution panel due to the fact that a fully operational panel would quickly drain the battery and the converter/charger must be isolated from the inverter when the inverter is operating. We recommend feeding the inverter AC IN from the main panel and feeding the AC OUT to a sub panel for multiple branch circuits or directly to a single branch circuit.
    view full answer...
  • Recommended Replacement Transfer Switch for Todd Engineering TES-350
    From the specs available to me, yes the Progressive Dynamics Transfer Switch, # PD52 is a good replacement option for the Todd Engineering TES-350.
    view full answer...
  • Comparing Progressive Dynamics PD52 to PD52DCS
    The Progressive Dynamics Transfer Switch - Metal Case - 50 Amp - 120V/240V # PD52 (Alternatively PD52V) and the PD52DCS/PD52DCSV are both part of the PD52 series but there are some differences. Both share the same voltage rating and current ratings. The # PD52 is slightly smaller in size and weight, and has a different control board. It also does not include a remote, which the PD52DCS has. The other differences are additional features the PD52DCS has that the # PD52 does not. It has open...
    view full answer...
    Image 1 for
  • Replacement Transfer Switch For Progressive Dynamics PD52
    I have a solution for you. As you know the unit you are looking for is no longer available and we do not have replacement parts either. However, I do have the replacement for that unit which is the following part: **Progressive Dynamics Transfer Switch - Metal Case - 50 Amp - 120V/240V # PD52. This PD52V will be the exact replacement for your old PD52 style unit.
    view full answer...
  • Transfer Switch For A 50 Amp RV To A 30 Amp Shore Service
    Realistically you should be using a 50A transfer switch like the: -Progressive Dynamics Transfer Switch # PD52. As using a 30A transfer switch would leave one leg of your panel unhooked, which isn't ideal. However, with that being said you can use your 30A transfer switch with a 50A service.
    view full answer...
  • Installation of Progressive Dynamics Transfer Switch in 2016 Newmar Dutch Star RV
    I think that your level of comfort in doing this repair lies with your level of comfort in doing electrical work-if you'd be comfortable doing electrical work at your home, this probably isn't a huge undertaking. If it's not something that would normally be in your wheelhouse, I would rely on someone with electrical experience to complete this installation. With that being said, if you do decide to take this one on, I also recommend disconnecting any batteries as well- those are going...
    view full answer...
  • Transfer Switch to Replace Parallax 5070 in Trailer
    Thanks for reaching out and we can get you a new automatic transfer switch to replace your Parallax 5070. That, like you said, is a 50 amp, 120V/240V rated transfer switch, and since these are interchangeable I would go with the manufacturer with the best quality, which is Progressive Dynamics: - 50A Transfer Switch - Metal Box - 120V/240V AC # PD52 From what I was able to find on your Parallax 5070, it with its mounting bracket measured 11-1/4” long x 8-1/4” wide x 5-1/4” deep, and while...
    view full answer...
  • Red LED Indicators of Progressive Dynamics Transfer Switch are On
    When the red lights of part # PD52DCS stay on it means the surge protection is damaged and not working properly. The only solution is to replace the control board.
    view full answer...
  • Recommended Made in USA 50 Amp Automatic Transfer Switch for RV
    Yes, the Progressive Dynamics Transfer Switch part # PD52 has an automatic design with 50 amp rating and it's made right here in the USA. We also offer the Go Power Automatic Transfer Switch part # 34270278 which is an automatic switch with 50 amp rating made here in the USA. They are both great options, the Go Power is slightly smaller but I would go with whichever is more cost effective at the time.
    view full answer...
  • Does Progressive Dynamics Transfer Switch Have Over/Under Surge Protection?
    Yes, the Progressive Dynamic Transfer Switch # PD52DCS has over/under voltage protection. I've attached the installation details and have also attached a photo with these highlighted from the manufacturer information. We highlight these features in our description because we know our customers are often concerned about this protection. I don't know why they don't highlight that on their page because they do in their product instructions. I think this is an important feature and you...
    view full answer...
    Image 1 for
  • Replacement Converter for Magnetek 6332 with Inverter and Transfer Switch
    The Replacement Converter for Parallax/Magnetek or WFCO RV Power Centers # PD4635V that you referenced was designed specifically for replacing the 6332 model Magnetek converter you have so this would work great. You'd remove the converter you have now and install this in it's place. You would need to use a transfer switch like the part # PD52 as well to go between shore power and generator power. The panel was designed for adding a transfer switch and has a section in the attached instructions...
    view full answer...
  • Recommended Transfer Switch For A 1999 Winnebago Adventurer 33B Class A Motorhome
    Since you have a 1999 Winnebago Adventurer 33B Class A Motorhome you would most likely have 50 amp service and would need a 50 amp transfer switch like the Progressive Dynamics 50A Transfer Switch # PD52. I have attached a short video below where Dave will walk you through the installation process and show you this switch in use.
    view full answer...
  • Recommended 50 Amp Transfer Switch To Accommodate Shore Power, Generator Power, And Inverter Power
    A transfer switch is only going to have two receptacles to accept power from so you wouldn't be able to connect all of your systems together, but I do have a solution for you. You would need to use a 50 amp transfer switch like the Progressive Dynamics Transfer Switch # PD52 and connect it to your shore power and generator power to the trailer, giving you an automatic switch over between the two sources, as you can see in the attached video below. With that installed you can then wire...
    view full answer...
  • Is Any Manual Switching Needed with Mighty-Mini Distribution Panel?
    I assume that by “Van Power” you mean 12 volt charging via the 12 volt accessory and charging line coming from the van to the battery. As a matter of physics, the battery will see the 12-volt source with the highest voltage. So, if your van 12-volt line is supplying 13 volts and your solar panels are supplying 12.8 volts, then you will have charging at 13 volts without any intervention from the panel. When connected to shore or generator power the converter will charge the battery. When...
    view full answer...
  • Replacement Converter Options For A 1994 Fleetwood RV
    Your converter must have a built-in transfer switch to be able to switch between shore power and generator power. The Progressive Dynamics converters and power centers that we offer do not include a transfer switch so one would need to be purchased separately. As for replacing the converter, you'll typically want to just match the amperage of what you currently have to avoid having to run new wire. 30 to 45 amps is pretty typically for most RV's, but it's best to check the label on your...
    view full answer...
  • Can I Use the Progressive Dynamics PD52 to Replace a Furrion F50ATS
    Yes. You could use the Progressive Dynamics # PD52 to replace your Furrion # F50ATS; they're both rated for 50amps so they are compatible. The Furrion does provide a bit of extra protection against power surges though with it's 125/250v supply, so I do prefer that choice when possible.
    view full answer...

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