Thanks for the education on surge protectors. 4 years ago I purchased a Camco PD-50, 50 amp surge protector for our motorhome. It worked okay protecting me from a couple of low power situations until February. I plugged it into the pedestal, then turned the breaker on and went about leveling the motorhome. While I we in the front of the rig I heard a loud noise like someone was using a jigsaw coming from the back. When I went to investigate, I found the PD-50 was the source! I unplugged it and set it aside. Our winter trip was about over and I never tried it again till last week. It's not making the noise anymore but it won't lock in anymore and pass power to the RV now. I emailed Camco about my problem and discovered Camco only stands behind their products for a year and they have no repair facilities available either meaning I've got a piece of trash on my hands now. After searching the forum for Surge Protector and finding this topic, I thought I'd share my experience.
While looking at the difference between Progressive Industry's SSP-50X and the EMS-PT50X, I see the EMS is rated at almost twice the current interrupting capacity as the SSP unit. In case of a lightning strike like we have so many of here in the Midwest, that could be a huge difference. The cheaper SSP doen't have over/under voltage protection either.
Don Ford
2004 Safari Trek 31SBD (F53/V10 20,500GVW)
'09 HHR 2LT or '97 Aerostar MiniVan (Remco driveshaft disconnect) for Towed vehicles
BlueOx Aventa II Towbar - ReadyBrake Inertia Brake System