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30 Amp RV Voltage Regulator

Catalog Item # 42292
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Surge Guard RV Voltage Regulators provide a reliable, regulated source of power.

They continuously monitor line voltage conditions and use a special transformer to increase the incoming voltage to an acceptable level when incoming line voltage is low enough to cause damage to RV air conditioners, refrigerators and other electrical accessories. Seamlessly switches between two modes of operation:

Boost Mode-raises output voltage by 10% if incoming line voltage is between 95 Volts to 110 Volts.
Bypass Mode-passes input voltage directly to the output when incoming line voltage is above 110 Volts or below 95 Volts

The LED Status/Fault Indicator Panel shows line conditions and voltage status. Each line voltage control circuit operates independently so that an increase in power only occurs on the required line. Fault tolerant units suffer no damage if an open neutral results in high voltage on one incoming line. Voltage Regulators work with Surge Guard® power protection devices (sold separately) to provide surge/spike/miswired pedestal protection to RV and appliances. Rain-tight metal case features mounting feet that elevate it off the ground so it doesn't sit in standing water when used outdoors. It can also be mounted inside a well-ventilated RV storage compartment.

Technical Specs

Tech Specs

Weight: 20.6 lbs.

Manufacturer: Southwire

Mfg Part #: 10176

Tech Notes:

  • Indicates Boost or Bypass operating mode
  • Indicates good / correct ground connection
  • Fault indications include:
    • Under voltage
    • Over voltage
    • Open ground or neutral
  • Line and neutral reversed
  • Boosts power when the voltage is as low as 95 Volts
  • Bypasses when incoming voltage is above 110 Volts or below 95 Volts
  • For use on single phase, 2-wire services
  • Rated 120 Volt, 30 Amp
  • Approx Enclosure Dimensions: 7.5"H x 12.75"L x 10" W

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30 Amp RV Voltage Regulator: Customer Reviews

Camper's Choice Rating

(5 Based on 7 Reviews)

Reviewed by 7 customers


Prepurchase Questions

0 out of 0 people found this review helpful.
September 18, 2010
1. As is so often the case, the product description is either inadequate or incorrect and that is why four stars. I don't have first hand knowledge through useage of this unit but I have examined it at a Camping World store. The second of three paragraphs (Boost Mode) states there is a 10% boost between 95 to 110 Vac and goes into bypass mode above 110 Vac, as it should. Also stated is it goes into bypass mode below 95 Vac. I find this hard to believe as it should disconnect power if it falls below this level. Voltage below this level can distroy motors and malfunction or worse of electronic equipment. 2. The placarding on the unit states it is a Surge Protector and Voltage Regulator. The third paragraph states that this device works with surge guards, sold separately. If it is a surge protector, why would another surge protector be recommended? 3. The technical discription and illustration presented for the 30 amp unit is for the 50 amp unit. 4. The first paragraph states this is a special transformer. To be more accurate, more than likely it is an autoformer which is a single coil of wire around a laminated iron core that boosts the voltage by virtue of the location of input and output taps (connections) to the coil. If it were a transformer there would be two coils of wire on the iron core that electrically isolates the output from the input. Multiple voltages would be obtained from the secondary winding. This would cost more. 5. This appears to be electrically similar to the Hughs Autoformer that has been around for many years and can be found on the internet. The Hughs unit is smaller and not as heavy. Functionally, I have no information that would suggest superior function or reliability of either one over another except that after at least 10 years my Hughs unit has failed. .
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this might be the answer

10 out of 10 people found this review helpful.
November 13, 2010
I use an inexpensive plug in line voltage monitor in my RV and have been at many parks where I could not turn on my roof AC without dropping the voltage to a dangerous level that would damage it. I purchased the 30 amp unit to solve this problem with some concern about the price, but when I tested it out on my RV, it worked as advertised. When I turned on the roof AC by itself, it dropped my incoming voltage below 110v when the compressor turned on, but the boost light came on (red) and stablized the incoming line voltage. It was 114 volts coming in and the RV voltage (to the AC unit) was at 122 volts, a safe level to run the AC. When I added the electrical loads of the microwave and a space heater to the AC load, the incoming line voltage went to 107v, dangerously low, but the RV voltage was boosted up to 114v, still safe enough to run your AC unit. Conclusion? The unit works very well and is much cheaper than replacing your roof AC, refrigerator, TV, or microwave etc. due to low voltage damage. Don't leave home without your line voltage monitor and see for yourself if you need a voltage regulator for your favorite RV park. If so, this might be the answer.
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30 Amp Voltage Regulator

0 out of 0 people found this review helpful.
August 11, 2011
I have been using the 30 Amp Voltage Regulator for close to a month and it has performed as advertised. Our camp rarely supplies 115 volts on a regular basis, consequently; the voltage regulator is constantly utilized. When our shore power drops below 105 volts; the regulator does go into by-pass mode. The regulator has allowed me to cut the use of running our on-board generator significantly. This summer in PA.; the requirement for our A/C has been daily and I am well pleased with the performance of the voltage regulator. It is well worth the money for the ease of mind. Great buy!
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Q & A

Product Question & Answer

4 questions : 4 answers
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Can I buy this unit in store?
1 answer(s)
It looks like it just sits on the ground below the camping grounds box and the camper plug then plugs into it, is that correct?
1 answer(s)
Should this regulator be used in conjunction with a surge protector?
1 answer(s)

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