ICM Controls ICM517 Single Phase Surge Protector with Nema Type 3R Rated Enclosure, 2.16" Depth, 2.78" Width, 5" Length

Received the surge protector in good condition. It was easy to install and the washer and panel nuts came with it. I seem to have receive the latest version which was great. Installed this on my new high efficiency furnace because of all the electronics it has. Some may say it was a waste of money but these days the way the power gets switched around I wanted better protection. Great purchase.

Was perfect! Is installed and working….

Easy to install and appears to be protecting with the green light on. Won't know if it really works until everything survives a power surge.

Unlike many other surge protector reviews, I am not going to say this works great. I don't know if it will work at all, and I honestly I hope it never has to do its job. It simply adds a level of potential protection. Reread that last sentence. I WILL say that it is made in the USA, that is, the United States of America, and is therefore American made. That being made clear, it was easy to install and is now protecting my new minisplit. If you happen to have trouble getting all three LEDS to come on, don't despair. It is highly unlikely that it will need to be returned. With mine, only two LEDs came on at first, or so I thought. It turned out that one of the three LEDs was bent over and not aligned with the clear plastic lens that directs the light outward. All I had to do was DEENGERGIZE THE MINISPLIT CIRCUIT BY SWITCHING OFF ITS BREAKER, open the ICM517 up (by removing the two front screws), and tweak the offending LED so that it was aligned with the lens. Once closed back up, the all the LEDs were visible. I will buy one of these again if I ever need another surge protector. Buy USA products!

Not sure if it will protect my a/c unit but better to have this device as insurance which is much cheaper than a new compressor.

Needs better packaging! Instructions would be nice. Wait; see opening line, lost in shipping I'm sure.

Installed this surge protector on my outdoor condensing unit. Anymore surging issues will be automatically sent to the ground wire. Easy to install on my 240v 1 phase unit.

Either this thing works and extends the life of your system, saving you money, or it doesn't work, and you get to claim its up-to $1000 equipment warranty towards the repair of your system that didn't get protected. Win win.