Review on 🌩️ Intermatic AG3000 HVAC Surge Protective Device - Universal 120/240 VAC, Color by Logan Tripp

Easy to install. I like the thick wires and the green LED. Note that it has three wires for 240VAC use, e.g. B. For an AC condenser (compressor) outdoors: hot-ground-hot. It can also be used with 120VAC devices (e.g. an oven), but you'll need to find a schematic online for this application (you connect the second "hot" wire to the 120VAC neutral wire). The whole house surge protector for the electrical panel has four wires. So many modern devices have circuits built in that it really pays to protect them. When you attach a surge protector like this to one appliance, you also get whole-house protection (it's difficult). But a surge arrester mounted on a panel is best for "whole house" protection. Updated 03/01/2016. After 16 months, I noticed that the green LEDs on both surge protectors were off. Warranty claims page Intermatic quickly replaced both - claim emailed and proof of purchase faxed (there is a 3 year warranty). Curiously, none of the other four wall-mounted surge arresters (with "I'm fine" LEDs) on various circuits in the house were damaged, so it's not clear what happened? Just these two surge suppressors (on different circuits) absorbing the surge and saving everyone else? Or did the very bright green LEDs just burn out? Or is the LED overvoltage detection too sensitive? I'm not sure, but if I ever need to replace them again I will upgrade to a more powerful model. Update March 31, 2016: Today I took my two broken AG3000 apart by smashing them with a hammer. Strikes on the seam (with eye protection!). There are two 1-3/8 inch square surge arresters (MOVs) in plastic cases. One of the connectors of each MOV is soldered to its front panel. When one of the MOVs absorbs large overvoltages, it heats up to the melting point of the solder. and the spring contact of the tongue opens. This allows the spring-loaded phenolic pusher to push past the reed contact and move 3/4" up to depress a tiny switch on top, which in turn bypasses the 600V diode protecting the green LED. . Without a Diode the LED is not protected from the reverse half of the AC voltage and will fail immediately which alerts you that the AG3000 is being exhausted in its work On one of my AG3000 both varistors suffered from thermal spikes and on the other NOT Both salvaged 600- V diodes worked fine after removing them, as did the two 15kΩ resistors going to and from each diode LED pair (thereby limiting the LED to 240V/30kΩ = 8mA which seems reasonable) So the second AG3000 probably had the green LED itself failed and was actually fine (minus one star).I saved these two MOVs for a future hobby.I would advise Intermatic to use two independent LEDs to consider as it seems a shame to go to all the trouble and expense of replacing the entire surge protector when just one dime LED has failed. Update April 20, 2019: After an average of 18 months (each) of guarding the outdoor air conditioning compressor, I replaced a total of four. Since my last replacement part is no longer under warranty, I'll upgrade to a stronger surge protector next time. THIS MODEL IS TOO LIGHT TO RECOMMEND.