Southwire 35550 Full Protection Surge Guard Hardwire - 50A, 120/240V, 3850 Joules
Southwire 35550 Full Protection Surge Guard Hardwire - 50A, 120/240V, 3850 Joules
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Southwire

Southwire 35550 Full Protection Surge Guard Hardwire - 50A, 120/240V, 3850 Joules

|4 ratings

Key item features

  • Comprehensive Protection: Offers total electrical safeguarding against faulty park power, including surges, open ground/neutral, and miswired pedestals.
  • Automatic Reset: Features an automatic reset function upon power restoration, ensuring continuous protection without manual intervention.
  • Multi-mode Suppression: Incorporates multi-mode surge suppression technology for robust defense against power fluctuations.
  • Delayed Activation: Includes a 128-second reset delay specifically designed to protect sensitive A/C compressor units.
  • High Joules: Provides substantial 3850 Joules of power surge protection for connected electronic equipment.
  • Permanent Installation: Designed for permanent hardwire installation within the coach bay, deterring theft and environmental damage.
  • Continuous Monitoring: Continuously monitors shore power, automatically shutting off when dangerous electrical conditions are detected.
  • Optional Display: Supports an optional remote LCD display for convenient, remote monitoring of RV electrical power.
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Current price is $300.24
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4 out of 5 stars
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Apr 17, 2026
Ken
Sold and shipped byBoating Store
5 out of 5 stars review

Verified Purchase

there are a lot of manufacturers making these devises but this brand has always been the most reliable, I am a licensed electrician and this is the most trustworthy.

Helpful?3APUSNN9HM01105270777
Aug 15, 2021
Gregg
5 out of 5 stars review

couldn't of found a better device for power manage

I purchased this 4-5 years ago now. I RV full time and it has been trouble free and extreemly informative the entire time. during the summer I probably look at the "remote" monitor at least once a day just to be sure my 3 air conditioners are not drawing to much and to check how strong the RV park voltage stays. It definitly keeps me informed. this is one of my upgrades I am glad I did. I picked the hardwired Surge Guard for a few reasons; (1) it gives the most protection (2) don't have to worry about theft or forgetting it (3) it stays inside and out of the elements (4) it has the capability of attaching the remote monitor *** (5) it is a needed upgrade for RVs, specially in the summer months. I am attaching a few pictures of it in use. notice the voltage differences between L1 & L2 that without this monitor, you would never see the possible damage the shore power source could be causing you.

Review from southwiretools.com
Helpful?3APUSNN9HM01105270777
May 8, 2019
Clarence
5 out of 5 stars review

Surge guard 35550

Was easy to install and gives me piece of mind that my power hookup is adequate. I installed with a surge guard remote monitor which displays line voltage current being drawn on both line 1 and line 2 and any fault if one occurs.

Helpful?3APUSNN9HM01105270777