It's true that you need a better surge protector with decent low/high voltage protection. I've had the Progressive on my last two coaches and they are the best.
I chose to go a different route this time. I replaced the existing TRC 41260 transfer switch with a 40250-RVC transfer switch. It's a more robust transfer switch plus has surge and voltage protection equal to the Progressive. I chose this method for three reasons. One, I preferred replacing the transfer switch, which isn't known for being bullet proof with the better switch that had 60 amp shock mounted contactors versus 50 amp rigid mounted contactors. Two, I didn't want to add another component to an already full compartment so replacing the existing switch didn't take any extra room. Three, it has RVC network capability and I plan to expand that into a total coach control system upgrade a bit later.
However, for anyone just looking for a good add-on protector, the EMS 50C-HW is as good as they get and the company that backs it is excellent.
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Mark & Leann Quasius
2016 Cornerstone 45A
2020 Jeep Gladiator Rubicon
2021 Jeep Wrangler Rubicon
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