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Camco RV Power Defender Voltage Protector - 50 Amp

Camco RV Power Defender Voltage Protector - 50 Amp

Item # CAM55306
Our Price: $493.93
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This 50-amp voltage protector helps protect your RV from damage caused by low or high voltage and power spikes and surges. It automatically disconnects when dangerous voltage levels are detected and reconnects when voltage levels stabilize. Great Prices for the best rv surge protectors from Camco. Camco RV Power Defender Voltage Protector - 50 Amp part number CAM55306 can be ordered online at or call 1-800-940-8924 for expert service.
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Camco RV Surge Protectors - CAM55306

  • 50 Amp
  • Surge Protector
  • Portable
  • Camco
  • 4200 Joules

This 50-amp voltage protector helps protect your RV from damage caused by low or high voltage and power spikes and surges. It automatically disconnects when dangerous voltage levels are detected and reconnects when voltage levels stabilize.


  • Voltage protector protects your RV from excessive voltage and power surges
    • Automatically disconnects when dangerous voltage levels are detected
    • Reconnects when voltage levels stabilize (between 102V-132V)
  • Female end connects to your RV's 50-amp power plug
  • Male end plugs into a 50-amp receptacle
  • Built-in handles on each end make unplugging the cord effortless
  • Water-resistant unit protects electrical components
  • Multilevel surge protection works together with diagnostic lights to visually alert users to faults
  • Reconnect delay protects sensitive equipment, like air conditioner units, by not rapidly cycling power
    • Resets after 140 seconds


  • Overall dimensions: 16" long x 5" wide x 4-1/4" deep
  • Amps: 50 amps
  • Voltage: 125/250
  • Energy dissipation: 4,200 joules
  • Warranty: 1 year

55506 Camco Motor Home Power Defender Voltage Protector - 50 Amp

Customer Satisfaction Score:

Customer Reviews

Camco RV Power Defender Voltage Protector - 50 Amp - CAM55306

Average Customer Rating:  4.9 out of 5 stars   (316 Customer Reviews)

This 50-amp voltage protector helps protect your RV from damage caused by low or high voltage and power spikes and surges. It automatically disconnects when dangerous voltage levels are detected and reconnects when voltage levels stabilize.


So far, so good. Took about a minute to run through it's diagnostics, then all good to go.
Bought this because the last army corp campground we stayed at, had problems with the power going on and off.
Will feel a little more protected now.



Works great, and with the 30 amp adapter, can use it with 30 or 50.


The CAM55306 looks well made. Received the item in a couple days plugged it in and in a couple minutes camper powered up. Every thing's working fine. While away from the camper had power outage everything came back on no problems. One less thing to worry about. Thanks for a great product at a better price than competition.


Great product for RV protection. Gives you a piece of mind knowing that your rv has this electrical protection


Yes I would purchase again. It's comforting knowing I don't have to worry about surges to my RV. For me it's no problem but it could be a little heavy and cumbersome for some older folks. I devised my own cable locking system to the elect. box just incase Im in a park where I don't trust everyone. This is such a nice item to have someone else may want it more than me.



Still working great, would purchase again.


Put the product to work the weekend after receiving it in the mail from etrailer. Worked immediately to protect our electrical system. Only saw the green light during our stay in the RV resort but having it gives me peace of mind.



Still working fine protecting our electrical system. Also have found the loops on the handles make it easy to cable lock my power cord and the voltage protector to the RV site power box.


The Camco RV Power defender has worked well for me over the last year of ownership and full-time RVing. On the exterior: generally it’s held up well, but has shown some wear.

It has caught many low voltage situations where power has been unsteady.
It has brought a lot of piece of mind knowing the electrical system is protected.

Slow to boot up on first plug in or after power issue detection.
Much larger than the competition.

Since the unit is so large often it will be on the ground and not hanging vertical. Technically, it’s only water resistant if hanging vertically. Keep out of puddles and use a trash bag in rainy conditions to cover the unit in this situation.


i have not had the chance to use the product yet but etrailer got it to me very quick. 2 days. very easy web site to order from. Great customer service with followup emails letting me know it shipped and follow up for product satisfaction.



I have had no issues with our surge protector. we leave our camper plugged up full time and to my knowledge we have not had any issues with power. we are not in the camper full time but use it on most weekends.


I have had this for about a year now. I RV quite often and this surge protector is awesome. I have a 42' 5th wheel 2019 and as you know loaded with electronics. We have had a few occasions where the protector absolutely saved us. When there is an issue it powers down then reboots slowly to prevent a surge. Highly recommend it.


Did a lot of research on this product. Will work well with my new RV. Solid production and craftmanship. Worth the costs.



Excellent product, highly recommend




OUTSTANDING! Don't waste your time with thise cheap power strips. It gives me the best peace of mind when connecting at a RV park. A must have.


So far so good you should always protect your RV from power surges but this takes it a step further so you can monitor your power. We have had power pedistial problems at 2 RV parks in the last year it's good to know before you connect your RV and possibly cause any damage.


Excellent product. Simple to use. Very quickly runs through voltage checks. Provides peace of mind that camper electronics will not be fried.

Kenneth B.


Product is trouble free with no issues. It was tested when power went out during a thunder storm. It worked as designed.


This is my 4th or 5th experience with etrailer and they have yet to disappoint. Not much to evaluate on the 50 amp surge protector. I did find there is a delay while it searches for faults. Seemed to be about 2 minutes before the air came on in the motor home but its not even an issue. Works fine though I haven't had a surge so ill assume all is well.


I’ve been using this product for the past 2 months in various campgrounds and RV parks. I like that it analyzes the incoming current before connecting the RV and I have confidence that my electrical system protected.


Camco RV Power Defender Voltage Protector gives me peace of mind when we are traveling the country and etrailer is the BEST online company to do business with.


The only place I have used this product is at my home. I plugged it into my 50 amp service that I had run to check the circuit as well as to see if it worked. After a few seconds it showed all was good. We are fixing to go on back to back camping trips in a couple of weeks so I will give it a good work out then.


After almost burning out the wiring in my new RV at a camp site. I purchased this item and feel very comfortable in the protection it provides me.


Purchased this after first purchasing a surge protector that only protected against surge not low voltage.
Works well at this time!


I knew I had to have a surge protector. The functions on this covered all my wants. I've only used it at the house so far. Time will tell on the actual quality.
It seems well made.


I have had refrigerator trouble I was told it was voltage surges shutting down my refrigerator. that's why I bought the defender . usually the plugins are not always wired correctly at the parks,


I haven't had a chance to use this yet but it seems to be a well built product. I like the large pull handles to assist in unplugging.


I used this product for 20 weeks last year without any issues - I made connection is some 40 different sites. I feel well protected with this product

Mr A.


Yes - the device is working well - just finished a 4 week trip visiting 4 different campgrounds. The only issue is waiting after you plug it in for it to do its necessary checks before giving the green light. I feel good with the protection


Yes, it took about 140 seconds to provide power to the Motorhome after the diagnostic routine. Great service from Danny T. Thank you,



Extremely fast service, product came packaged excellently and is just what I needed, would highly recommend etrailer.

Show More Reviews

See what our Experts say about this Camco RV Surge Protectors

  • Camco Power Defender Showing Open Neutral When Plugged Into RV
    If you are plugging the Camco RV Power Defender Voltage Protector # CAM55306 directly to the shore power outlet and only getting the "Open Neutral" fault when plugging in the RV then there is an issue either with the outlet itself or your RV cord. The reason the error is only showing when plugging in the RV is because it will only detect it when power is being sent back to the RV/trailer. It is basically needing a bigger load placed on the circuit to identify this fault. I recommend inspecting...
    view full answer...
  • Recommended Adapter and Surge Protector for 50 Amp System to 30 Amp Shore Power
    With your 50 amp camper system, I recommend using the Power Grip RV Power Maximizer - 50 Amp Female to 15 Amp Male and 30 Amp Male # CAM55025 to allow you to plug into 30 amp power supplies. Then you will use a surge protector like # CAM55306 for multiple surge protection or # CAM55313 for single time surge protection. Many people use the Camco Power Grip Cable with Lock # CAM44290 to protect their investment. Unless you convert your entire system to 30 amp, I don't recommend using a...
    view full answer...
  • Is Camco RV Power Defender Voltage Monitor # CAM55306 Weather Resistant
    The Camco RV Power Defender Voltage Monitor # CAM55306 is weather resistant. Which means that if you kept it out of direct rain fall or snow it's going to be just fine. If you wanted to use it in a small plastic box to protect it from the elements that would be just fine.
    view full answer...
  • What is the Correct Voltage Monitor to Use on 2007 Winnebago?
    The right voltage monitor is going to depend on which service you use. You said you "can" use 30 amp service, and if that is what you do then you'll want to use the Camco RV Power Defender Voltage Monitor - 30 Amp # CAM55301. If you use 50 amp service then the appropriate voltage monitor is the 50 amp # CAM55301. Essentially, you will simply need to use the monitor equivalent to the service you are using. I've attached links to video reviews of both parts for you to take a look at.
    view full answer...
  • Does Camco RV Power Defender Circuit Analyzer CAM55313 Protect Against Low Voltage
    The Camco RV Power Defender Circuit Analyzer # CAM55313 does not protect against low voltage. But there is a similar product that does both low voltage and surge protection. It is the Camco RV Power Defender Voltage Monitor # CAM55306. It disconnects power in a dangerous voltage situation and will reconnect when voltage gets to the 102 to 132 volt safe range.
    view full answer...
  • When Going from 30 Amp Power Source to 50 Amp RV What Power Amperage Circuit Protection is Needed
    You want circuit protection to protect your RV's wiring which is rated for 50 you'd want to go with 50 amp circuit protection. For that we have the part # CAM55306 which automatically resets or the part # CAM55313 which is more like a fuse and is internally damaged and needs to be replaced in the event of a surge. To adapt this to a 30 amp power source you'd want the part # A10-3050FHVP and you'd be set.
    view full answer...
  • Using Mighty Cord Dogbone 50 Amp to 30 Amp Adapter with 50 Amp Voltage Protector on RV
    Yes, when hooking up to 30 amp shore power you can simply add the Mighty Cord Dogbone Adapter # A10-3050FBK, which will connect to the 30 amp outlet and then go to your existing Camco 50 amp RV Power Defender # CAM55306, which would then plug into your RV. The Camco Power Defender is still going to protect your RV from potentially dangerous surges over 50 amps. I have attached a couple short video reviews that you can check out as well.
    view full answer...
  • Can the Camco RV Power Defender 50 Amp Voltage Monitor be Used on Motorhome with 30 Amp Service
    A 50 amp surge protector like the Camco RV Power Defender Voltage Monitor - 50 Amp, # CAM55306, can be used but it will not not provide the level of protection that you need for your motorhome with 30 amp service. A voltage monitor protects your motorhome from excessive voltage and power surges and automatically disconnects when dangerous levels are detected. Excessive voltage for a 30 amp service is much different that of a 50 amp service which means it would not disconnect at the correct...
    view full answer...
  • Recommended Surge Protector for 50 Amp 5th Wheel Trailer Connection to Shore Power
    For your 50 amp system, you will want the Camco RV Power Defender Voltage Monitor - 50 Amp # CAM55306. This voltage monitor disconnects when dangerous voltage levels are detected and then reconnects when it stabilizes. This is much better than the cheap surge protectors that need replacing and are only good for one surge and then leave you disconnected or vulnerable. You won't need a different surge protector for your 50 amp RV wiring. For sites that won't have a 50 amp service, I recommend...
    view full answer...
  • Troubleshooting Camco 50A Power Defender Not Allowing Power to Go Through
    I reached out to my contact at Camco who said that if you didn't give the Camco RV Power Defender # CAM55306 2 minutes to run through diagnostics after plugging it into the power source then that would cause the lights to act like what you described. If you plug it in and let it sit for at least 2 minutes it should then either give you one of the different light indicators and/or will work properly. If this doesn't solve your problem let me know and I can help you troubleshoot further.
    view full answer...
  • Joules of Surge Protection for the Camco Voltage Defender
    I spoke to my contact at Camco and he informed me that the Camco RV Power Defender Voltage Analyzer # CAM55310 that you referenced offers 1,050 joules of surge protection but it's primary function is to determine if a power outlet/pedestal is wired correctly. For more voltage protection you may be more interested in the # CAM55301 that offers 2,450 joules of protection or the part # CAM55306 that provides 3,850 joules of protection. Review videos for all three products are attached.
    view full answer...
  • What Types of Protection Does Camco RV Power Defender Voltage Monitor CAM55306 Provide
    The Camco RV Power Defender Voltage Monitor # CAM55306 is rated for 50-amp applications where it will automatically disconnect power if it senses low or high voltage (below 102V or above 132V), power spikes, surges or ground faults. I confirmed with my contact at Camco that grounding issues also trigger the protection. It also features a re-connect delay to protect connected items from rapid on-and-off cycling when power is unstable. The unit will take about 2 minutes to analyze the power...
    view full answer...
  • Is Wear on Connectors of Camco RV Power Defender Voltage Protector a Concern
    As long as the Camco RV Power Defender Voltage Protector # CAM55306 is still functioning properly and the lights on the front panel are showing that you are safe you will be fine. Most likely you had a pretty big power surge that this was able to protect you from! Definitely keep an eye on it and if you see any changes you'd probably want to have an electrician take a look at your RV's setup to make sure you don't have any wiring issues that need to be cleaned up.
    view full answer...
  • Differences Between Camco Circuit Analyzers and Power Defenders
    You are correct. The 30 Camco RV Power Defender Voltage Protector # CAM55301 is like a circuit breaker and automatically resets if there's a surge whereas the 50 amp Circuit Analyzer part # CAM55313 is like a fuse and it only can handle one surge. For a 50 amp breaker style you'd need the part # CAM55306.
    view full answer...
  • Could 50 Amp Power Defender be Used on Trailer that Has 30 Amp Power
    Yes you could use the 50 amp power defender part # CAM55306 that you referenced on your 30 amp trailer but it wouldn't start protecting the circuits until more than 50 amps was put on the circuits. A better option would be a 30 amp power defender part # CAM55312.
    view full answer...
  • Availability of Surge Protector for 50 Amp RV Electrical Service
    We have exactly what you're looking for. Take a look at the Camco 50 amp RV Power Defender, part # CAM55306. The Defender automatically disconnects power to protect your RV electrical system from spikes, and will reconnect when voltage levels stabilize.
    view full answer...
  • Camco Surge Protector 50 Amp Hums While in Use
    I checked with Camco about their Camco RV Power Defender Voltage Protector item # CAM55306. They said that this was completely normal. The hum that is bothering your neighbors indicates that the protector is functioning properly. The hum may change pitches as well.
    view full answer...
  • What is the Difference Between a Power Analyzer and a Surge Protector 50 Amp Adapter
    An analyzer such as # CAM55313 has diagnostic lights to indicate faults so that you can avoid damage to your RV. This model also offers surge protection. A model that offers only surge protection would not have any diagnostics. But some have both. There is also the Power Defender # CAM55306 that takes surge protection a step further by having the ability to detect too much AND too little power and disconnect and reconnected as needed.
    view full answer...
  • 30 Amp Surge Protector Recommendation for Travel Trailer
    You'll need a 30 amp protector to match the amperage of your travel trailer. The 50 amp surge protector wouldn't do anything to protect a 30 amp setup. For that you'd want the pat # CAM55306.
    view full answer...
  • Troubleshooting Open Neutral Reading Only When Air Conditioner Is Running
    The Camco RV Power Defender Voltage Protector - 50 Amp # CAM55306 is reading correct when you are in basic use. So we know the shore power is not the issue. We know that AC units do pull a lot of power, so the momentary open neutral wouldn't be a concern but if it says that way the entire time you are running your AC, I would have the wiring looked at to confirm you are safe in its use.
    view full answer...
  • 50-Amp Rated RV Power Protection Device to Guard Against Bad Wiring and Voltage Irregularities
    Yes, Camco offers two items similar to the 30-amp RV Power Defender Voltage Analyzer # CAM55310 that are suitable for your RV's 50-amp electrical service. Part # CAM55313 is a 50-amp Power Defender Circuit Analyzer that provides both diagnostic and surge protection functions. Camco also offer the 50-amp RV Power Defender Voltage Monitor # CAM55306 which adds the additional capability of automatically disconnection when dangerous voltage levels are detected, anything below 102V or above...
    view full answer...
  • Recommended RV Power Monitor/Defender for 50-Amp Service
    No, instead you will want to use the 50-amp version of the Camco Power Defender, which is their part # CAM55313. This provides the same circuit analyzer and voltage monitoring functions along with surge suppression but in the 50-amp capacity you need. A similar but better option is their RV Power Defender Voltage Monitor # CAM55306 which provides those functions but adds the ability to automatically disconnect when dangerous incoming voltage levels are detected. It will automatically...
    view full answer...
  • Camco RV Power Defender Surge Rating
    The Camco RV Power Defender Voltage Protector - 50 Amp Item # CAM55306 is designed to sacrifice itself if it's hit with 2800 or more joules of power (i.e. lightning strike). So yes, if it was hit with a strong enough power surge it would be done.
    view full answer...
  • What Voltage Protector Should be Used on Trailer with 50 amp Plug Using 30 amp Plug Adapter
    If your trailer is rated for 50 amp service then that's what the appliances are rated for as well. The idea is to protect them and since they would be drawing up to 50 amps the 30 amp protector would potentially cause problems. For that you would want the part # CAM55306.
    view full answer...

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