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  1. RV Surge Protectors
  2. Hughes Autoformers
  3. 50 Amp
  4. Voltage Booster
  5. 12000 Watts
  6. Portable
Hughes Autoformers Voltage Booster with Surge Protection - 50 Amp

Hughes Autoformers Voltage Booster with Surge Protection - 50 Amp

Retail:$729.99
Our Price: $571.78
You Save: $158.21
RV Surge Protectors
Shipping Weight: 38 lbs
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When others at the campground are having power problems, this voltage booster keeps your lights bright, your fans spinning, and appliance motors safe. Surge protection modules prevent damage caused by voltage spikes and lightning strikes. Great Prices for the best rv surge protectors from Hughes Autoformers. Hughes Autoformers Voltage Booster with Surge Protection - 50 Amp part number HU57FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (49)
  • Q & A (0)
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Hughes Autoformers RV Surge Protectors

  • 50 Amp
  • Voltage Booster
  • Hughes Autoformers
  • 12000 Watts
  • Portable
  • 4800 Joules

When others at the campground are having power problems, this voltage booster keeps your lights bright, your fans spinning, and appliance motors safe. Surge protection modules prevent damage caused by voltage spikes and lightning strikes.


Features:

  • 50-Amp voltage booster increases volts going to your RV during periods of high demand at the campground
    • Protects your appliances from damage caused by insufficient power draw
    • Boosts voltage by 2% when voltage is between 115V and 114V
    • Boosts voltage by 10% when the voltage is 113V or below
    • Automatically shuts off when the unit receives 90 volts or less
  • Surge protection module offers 4,800 joules of protection in case of lightning strike
    • Can be replaced once it wears out - no need to replace the entire unit
  • Status lights illuminate in different colors to indicate the operation of your voltage booster
    • If boosting light is on, the unit is boosting voltage
    • If surge capacity light is red, you need to replace your surge protection module
  • Park diagnostic lights let you know if power pedestal is safe to use
    • If lights 1-3 are green, you are all set to connect your RV
    • If any of these lights are red, there is a problem and you shouldn't connect your RV
    • Compare LED lights to legend on unit to determine what the error is
  • Included cable lock loops through carrying handle to deter theft
  • Easy to use - plug into pedestal to check for a safe circuit and then connect your RV shore power cord
    • Compatible with power cord adapters
  • Made in the USA


Specs:

  • Voltage booster dimensions: 5-1/2" long x 8-1/2" wide x 12" tall
  • Cord length: 54"
  • Amps: 50 amps
  • Wattage: 12,000 watts
  • Energy dissipation: 4,800 joules
  • 3-Year limited warranty


Note: Not compatible with park poles with GFCI outlets.


Protect your investment

If you aren't using a surge protector, you're taking a big risk. While spikes caused by lightning can damage your electrical system and appliances, there are common electrical issues that can be just as dangerous. Choosing a surge protector with advanced features will help you protect your RV.


Voltage Boosting

Electrical problems are not uncommon at campgrounds, especially ones where wiring was originally installed decades ago. When a campground is full on a hot day and everyone is running their air conditioners, low voltage may cause a brown-out situation and damage your RV appliances.


Hughes Autoformers Voltage Boosters respond by automatically boosting voltage when low levels are detected. As voltage drops, electrical circuits respond by increasing amps. The booster converts the increased amps into volts to keep your connection strong. If volts drop below a usable threshold, it automatically cuts off power.



RV22050SP Hughes Autoformers with Surge Protection - 50 Amp

Replaces RV220-50-SP

Item # HU57FR

Installation Details HU57FR Installation instructions



Customer Satisfaction Score:


Customer Reviews

Hughes Autoformers Voltage Booster with Surge Protection - 50 Amp - HU57FR

Average Customer Rating:  4.8 out of 5 stars   (49 Customer Reviews)

When others at the campground are having power problems, this voltage booster keeps your lights bright, your fans spinning, and appliance motors safe. Surge protection modules prevent damage caused by voltage spikes and lightning strikes.

by:

Has saved me at least 3 times this past year with low voltage and high resistance circuits at multiple parks, let’s me know if there is a problem as soon as plugged in, especially with open grounds



by:

Unit works as describe. Glad to have this to protect the RV electrical system.

Skeeter

11/21/2023

The autoformer is working great. Gives good readings and comfort that the campground electrical is safe.

Etrailer Expert

Mike L.

11/21/2023

@Skeeter The peace of mind is a good thing!


by:

It works as expected. A couple of issues make it a less-than-perfect product.
1. The location and orientation of the outlet makes it easy for the cord to work loose. Admittedly a 50-amp cord is heavy but it needs a more positive connection.
2. Mine failed under warranty. They don't send a replacement but repair the one you send back. Problem is that it is heavy. As a full-time RVer, I don't keep old packaging "just in case" so returning it was a challenge.



by:

This park...in the hottest history cut down all my shade and gives me 104 volts. The hughes box works fantastic! Arrived fast in perfect shape. Thankyou ... I have a.c. again and in Palm Springs....old 67 year old....is saving my life.



by:

This unit works great! Our resort voltage drops down as low as 98 volts. That's hard on AC devices. This unit maintains a safe voltage no matter how little or how much current we are using. And it has built-in surge protection. Definitely worth the money!!!



by:

Products arrived quickly. Will be using for the first time this coming weekend



by:

An electrician friend and fellow RVer recommended this after we'd experienced a low voltage situation. The power supply line to our electrical feed had a fault that caused the low voltage. I have been very happy with this product. It gives me confidence every time I connect to power. I don't want to replace appliances or HVAC units due to shortened life as a result of power supply voltage issues.



by:

Order was delivered days before anticipated. Products arrived exactly as expected. Easy installation I could do myself. Within 30 minutes had Autoformer installed within RV and all electric working properly. Thank you for the prompt response to my order. The video of the install and product features eTrailer provide are excellent.

Terry

7/25/2022

A year later, product still functioning properly.



by:

While I haven't had the opportunity to use this yet, I thought I would at least rate etrailer.com. First off, the price was cheaper than the big box website, enough so that I returned the unopened one from them so I could buy from etrailer. etrailer was easy to order from and was quick to ship/arrive. I received update emails throughout the process. I will use the Autoformer on my next trip and think it will do what it's designed to do. This booster is heavy, which I hadn't paid attention to but not so much that I can't handle it. Overall so far, very pleased with etrailer.



by:

Replaced Progressive device which constantly dropped out due to low supply voltage. Huges Autoformer instantly corrected that problem.

James

8/12/2022

Still working perfectly.



by:

The education videos on the website sold me on the value of purchasing the Hughes booster and surge protector. I have been an an RV park when there was a major power drop and so this product will be a great peace of mind for the protection of our home. Thank you etrailer



by:

Product just as advertised. Arrived quickly and in great condition



by:

Needed in a hurry. Etrailer didn't disappoint. It made my camping deadline with a day to spare. Awesome attention to the customer.



by:

Excellent service



by:

Have not used but from other reviews it appears to be a quality piece of equipment. Great pricing and very fast shipping from etrailer. It often seems as if items have already shipped before the order is complete (LOL) as they are very fast.



by:

Love it. Works great. Let's me know the power in the parks good or bad.



by:

great product,great vendor



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have not used it yet.



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by: 08/28/2023



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Show More Reviews

See what our Experts say about this Hughes Autoformers RV Surge Protectors

  • Hughes Autoformer Voltage Booster 70 Amp Outlet Safety
    As long as the amperage of the device does not exceed the maximum amperage of your outlet you are good to go. For reference a 60 amp circuit has 240 volt maximum which is 14,4000 watts, this device # HU57FR at 50 amps puts out 12,000 watts.
    view full answer...
  • Weight of Hughes Autoformers Voltage Booster with Surge Protection
    The Hughes Autoformers Voltage Booster with Surge Protection part # HU57FR has a shipping weight of around 38 lbs with the actual weight being around 35 lbs.
    view full answer...
  • Is It Normal For A Hughes Autoformers Voltage Booster To Increase The Voltage To 126-129 Volts
    I spoke with Hughes Autoformers and they believe in your situation that there's an issue with the circuit board or the relays of your voltage booster # HU57FR and would like for you to reach out to them so that they can take a look at how it's wired and either walk you through rewiring it or replacing it. Their tech stated that you should really only see a 3 volt difference when plugging in the booster and that seeing 10+ voltage increase putting you in the higher range of what's safe...
    view full answer...
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  • Could Hughes Autoformer # HU57FR be Hardwired
    Since Hughes Autoformers does not have a version of the Hughes Autoformer Voltage Booster with Surge Protection # HU57FR that was setup for hardwiring you'd have to drill out the rivets on top of the unit to remove the lid so that you could access the wiring that leads to the connectors on either side for wiring it.
    view full answer...
  • Operating Voltage of Hughes Autoformers Voltage Booster with Surge Protection
    The Hughes Autoformers Voltage Booster with Surge Protection, # HU57FR will boost voltage by 2% when voltage is between 115V and 114V. It will boost voltage by 10% when the voltage is 113V or below and automatically shuts down when the unit receives less than 90 volts. Yes, the Hughes Autoformer Voltage Booster with Surge Protection, # HU57FR can be used with the Power Watchdog Surge Protector with Bluetooth, # HU27FR. It is advised that you install the Autoformer # HU57FR in front of...
    view full answer...
  • Available Replacement Parts for 50 Amp Hughes Autoformers Voltage Booster with Surge Protection
    The only replacement part we have for the 50 Amp Hughes Autoformers Voltage Booster with Surge Protection # HU57FR is the Replacement Surge Protector # HU26FR. We do have some other accessories though which I'm linking for you to filter through.
    view full answer...
  • What Amperage Hughes Autoformer Surge Protector Is Correct For My RV
    No, you will always want to get the Hughes Autoformer Surge Protector that matches the amperage of your RV. The shore power amperage isn't what you'll need to go off when selecting your surge protector. You'll hook your RV up to the # HU24FR and then connect it to the shore power. If you are at a campsite with a different amperage than you trailer then you would use an adapter in between the surge protector and the shore power pedestal. If you had a 50 amp service trailer you would...
    view full answer...
  • Using the Power Watchdog # HU87FR and the Hughes Autoformers Voltage Boost # HU57FR Together
    Yes! You can definitely use the Portable Power Watchdog Surge Protector # HU87FR with the Hughes Autoformers Voltage Booster # HU57FR. Doing so will add an extra layer of protection to your electrical setup. It is important to make sure that you hook up the Autoformer in front of the Watchdog in order to receive the benefit of the extra boost and to eliminate the possibility of interference from the Watchdog.
    view full answer...
  • Can I Use the Hughes Autoformer and Power Watchdog Together
    Yes. Using the Hughes Autoformer Voltage Booster with Surge Protection - 50 Amp # HU57FR and the Hardwired Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 50 Amp # HU27FR together is possible and provides an extra layer of surge protection for your electrical system. You'll want to make sure that you've installed the Autoformer # HU57FR in front of the Watchdog to allow for the full boost to be utilized and not let the Watchdog interfere with anything.
    view full answer...
  • Is There a Way to Extend the Hughes Autoformer So it Can Be in the Electrical Bay
    Yes, you can use an extension so that you can have the Hughes Autoformers Voltage Booster with Surge Protection # HU57FR in your electrical bay. The best way to do this is to use the Hardwired Mounting Kit for Hughes Autoformers 50 Amp Voltage Booster # HU34FR. This kit will adapt your current power cord to work with the Autoformer, allowing you to keep it in the electrical bay.
    view full answer...
  • Are Campers Supposed To Use 120Volt or 240Volt Connections?
    Campers with either 30-amp or 50-amp connections are all going to be 120 volt. The connectors they use can be wired for either 120 volt power or 240 volt power which is why you see several people damage their campers as they try and plug into an outlet in their home that was designed for either a dryer or welder that uses 240 volt power. It gets really confusing with 50-amp campers as they use 2 separate hot plugs with 120 volt power and then they combine the neutral wires which is why...
    view full answer...
  • Does the Hughes Autoformer 50 Amp # HU57FR Provide Protection for RV Power?
    Yes, the Hughes Autoformer 50 Amp # HU57FR provides you protection for your RV power when connected to a shore power source. It offers up to 4,800 joules of protection from power surges. Although it is not necessary, you can use the Watchdog Surge Protector # HU87FR as an additional layer or protection along with the Autoformer. If you go this route, you want to install the Autoformer in front of the Watchdog to allow for the full boost to be utilized and not interfere with the other...
    view full answer...
  • How To Protect The Hughes Autoformer 50AMP Voltage Booster/Surge Protector From Rain and Dirt
    The Rain Cover # HU88FR can be left on the Hughes Autoformer Voltage Booster with Surge Protection # HU57FR while it is in use. If you are setting it on the ground be sure to use a Stand # HU68FR to keep it off the ground. The Hughes Autoformer # HU57FR will automatically resume power to your camper after a outage or surge unless it was damaged by the surge. You can check the lights on the unit to determine if the unit is damaged or the park wiring was damaged from the power surge. We...
    view full answer...
  • Will The 50amp Hughes Autoformer Voltage Booster/Surge Protector Work On 30amp Service Pedestals
    Since you're using a 30amp pedestal the Hughes Autoformer Voltage Booster with Surge Protection - 50 Amp # HU57FR isn't going to boost that power to 50amp. The booster is meant to give you steady service so that you don't experience a voltage drop. For example if it's the middle of August and everyone at the campground has their AC units kick on at the same time it could pull too much from the campground and you and others would experience a voltage drop and surge which could potentially...
    view full answer...
  • Can You Use A 30 Amp Voltage Booster On A 50 Amp Service Trailer
    No, you should always purchase a voltage booster that matches the amperage of the trailer. A voltage booster doesn't increase the voltage like the name would imply. It's simply there to ensure the current stays steady to ensure the safety of your trailer's electrical components and will cut the power if it drops or rises above a safe level. You'll never get 50 amp service out of a 30 amp pedestal using a voltage booster. Not having 50 amp service is simply going to limit the amount of...
    view full answer...
  • How To Safely Power Sensitive Electronics With A Non-Inverter Generator
    No, the Hughes Autoformer Voltage Booster with Surge Protection - 50 Amp # HU57FR is designed to protect your RV's electronics from low voltage damage by boosting the voltage it receives from park shore power if it falls below 114 volts. The built-in surge protector offers 4,800 joules of protection against power surges. For example if you're at a campground during the middle of August and every other camper tries to pull power from the campground to start their AC units this could cause...
    view full answer...

Do you have a question about this RV Surge Protector?


Info for this part was:

Employee Andrew K
Installed by:
Andrew K
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Mary K
Written by:
Mary K
Employee Amanda M
Edited by:
Amanda M
Employee Aidan B
Video by:
Aidan B
Employee Cody B
Updated by:
Cody B
Employee Manda E
Updated by:
Manda E

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