Progressive InternationalProgressive Industries EMSHW50C Surge Protector

I wanted to give this device a 5 star review because it does work well...however the size of the circuit box is ridiculous when you're dealing with #6 wires...maybe OK for the 30 amp device where the wire size is #10, but this was really difficult to get everything in its place, especially on the trailer side because you have to slip the amp sensors around the red and black wires. I ended up making it work by cutting back about 4" (they recommend 3") so I could initiate a bend in the wires to get them into the contactor ports. Do the ground first, twist it and get it as flat as possible, then red and black and bring the white in over the top of the red and black. The Line side was easier because there are no amp sensors on that side. My advice to Progressive is make the circuit box 2" longer, it will save anyone within hearing distance from encountering a crazy, swearing installer.

On our second trip we had intermittent low voltage first on L1 and later on L2 due to inadequate campground wiring. While we were not happy with losing one air conditioner temporarily we were very happy to know the EMS protected the A/C compressor from damage caused by low voltage.I wish the unit had the ability to use two digital readouts simultaneously, though, and then I would add the second one. While you can install both an interior and a basement display, only one can be active at a time. So if we have a power issue and I forgot to flip the switch to change the display to the interior one I'm still going outside in the rain. There's no way there is $90 worth of electronics in a second display box and a switch box so lets make it a bit more user-friendly, folks.

Saved me once from a High Frequency issue.After purchasing my first camper I did a lot of ready on how to protect your camper. One of the things I read a lot was the power pedestals at campgrounds can be very dangerous for your camper. One of the things people said to do was protect it with a surge protector. Which one, well that was on the consumer.So I began my long search on the right power protector for my camper. I saw Progressive Industries EMSHW50C Surge Protector and Technology Research 34560-004 50 Amp Hardwire Surge Guard as my two options that I wanted.Reasons for wanting to purchase hardwired over portable was simple for me. I didn't want to have to fool with plugging in the portable one every time we set up camp. I just wanted a system that worked automatically when I plugged my wire into the pedestal. Both these units had their pros and cons. I ultimately settled on this Progressive one as they up the warranty to Lifetime and it was for sure a USA product.Once the unit arrived at my home, I opened the box and then decided on a location in my camper that it would fit hidden, but I could still get the remote display to a accessible area. I then had to buy a short piece of 6/3 jumper wire. This wire is so difficult to work with as it is stiff. Mounted the unit, wired it then plugged the camper in and.............I had no power! :( I started looking at how I wired the unit and discovered a flaw in my wiring. Yes, I had wired it backwards, were I wired the output side to the input side. Ooops. Lesson learned and rewired the surge protector. Turned the power back on and waited the 15 seconds for the unit to check for issues and then the unit came on and showed no faults on my power side. Now every time I go to a campsite, plug in my camper, I can check to make sure the pedestal doesn't have issues.Since then though I have sold my old camper and removed the surge protector from that camper and installed it in my new one. The new camper is much more expensive and has a lot more expensive equipment in it.This time I have a built in generator and I installed this unit before the transfer switch as the generator has its on built in surge guard already.I have since had a High Frequency error on the display from the last campground we stayed at. I am glad I have this and will always have one no matter what.

The surge protector appears to work fine, though I have not had any over/under-voltage events so far. My complaint is that the display never stops cycling through the notifications, so it is constantly drawing our eyes to it. I would think that it would just cycle once then leave an "OK" notification up. A minor irritation, but an annoying one.

I must say - this is something every RV should have. We were once at a park w/ our last RV (30 amp), went out for awhile and when we returned we found a inverter had smoked out (and it was only a few months old) along w/ the microwave and TV not working. Upon checking to see why, we had found 240V feeding our RV - was a short inside the park's box - shabby wiring on their part. Well they did pay us "replacement cost" to replace those 3 things, and that was Great! Now we have a new RV (50 amp) so there was no way we were going to use shore power without one of these. I like this hardwired version that mounted inside the RV, unlike the portable versions that mount outside, there's no chance this one will get stolen nor you forget to use it. I think all new RV's should come w/ one pre-installed from the factory. But until then, we have options... Took a few hours to install, just needed some hookup wire, and a place - out of the way, to get it installed... Works Great!! Order process and shipping was easy and fast.... Thanks

There is no better product for protecting your investment. This is my second one, the first one was a 30 amp and I sold my camper and ordered a new one that is 50 amp this caused me to have to buy another one that is a 50 amp. These are a little pricey but to protect what you have invested a lot of money in it is worth it. I haven't got my new camper yet it is on order so I haven't installed it yet but im sure it will be just as easy as the first one I had.

We took a surge the unit did not stop the surge did considerable damage in the motorhome .It blew out a fuse inside the box.There replay was (act of God)NOT COVERED

Good product. A little bit of work to install mainly because of where I wanted to put it. Work well and has saved my electrical system in a couple of RV parks by warning and temporarily shutting down my system.