Review on APC NET9RMBLK - 9-Outlet Rackmount Surge 🔌 Protector with 1700 Joules and 120V Surge Protection by Jerardo Yatnalkar

I bought this to replace APC's previous white NET9RM. The old one would have gotten 5 stars for protecting a $15,000 rack of professional gear from a faulty alternator that was miswired, miscalibrated and putting out too much voltage. My old NET9RM smoked in and out badly, but ALL my hardware survived. Few other surge protectors provide this level of protection. BUT when I ordered a new unit it turned out to have the same model number (except for BLK which stands for black) and the exact same chassis etc. I noticed that the TVSS surge protection ratings on the back are noticeably worse than the old ones. In the OLD version of the device there was a clamping voltage (the lower the better) 330V for all three LN, LG, NG. The NEW block is 400/500/500V respectively. This way when the surge occurs you will still have 500 volts going through your 120 volt system. Curious, I opened both the new and the old block. Inside they looked the same, except each block had two completely different circuit boards. Same shape and dimensions but completely different layout and components. Cluster and MOV chokes are less reliable on the new model. APC should have provided a new model number instead of selling a significantly inferior device and passing it off as the same model.