CR Magnetics CR4395-EH-120-660-B-CD-ELR-I Current Sensing Relay with Internal Transformer, 120 VAC, Energized on High Trip, 6 - 60 AAC Trip Range, 2 - 25 Second Trip on Delay

Works great. Using to power Salt Water Generator when pump is running.

The 1 to 10 Amp AC adjustable trip range is handy. Circuit wiring diagrams are included. You can get a trip range lower than 1 Amp taking multiple loops through the coil, making it suitable for using almost any electronic device to trip the relay and turn on another device. I used this to build a relay box so that my main power amplifiers in my A/V system are turned on when I turn on my new A/V Receiver.My old receiver would work with a computer-type switching power strip (Smart Strip), but the new receiver evidently draws too little current (or too much when turned "off"), and it wouldn't work. I searched without success for another ready-made solution, but ended up having to build my own using this relay.IMPORTANT NOTE: This is NOT a plug-and play device and is designed as a component for industrial/commercial equipment. There are exposed 120 VAC contacts. For safety, you have to mount this in a closed electronic box, with a fuse, to provide protection. Don't buy this unless you are an experienced electronic hobbyist or engineer and can read a circuit wiring diagram.

Excellent product. I used it to turn on the sound system with the tv. Mine had a (one pass) switching sensitivity of 10-100 amps and I used five loops to obtain 2-20 amp. I had measured the tv current at 3 amps and it worked well.... for a while. Then it would cut out after a few hours. To troubleshoot it, I used an ammeter during tv operation and sure enough, it started at 3 amps for the first hour or two, then gradually dropped to 1.8 amp! That’s when the relay kicked out and the sound went off. The fix was easy; I added five more turns for a total of ten to get a switching sensitivity of 1-10 amp and all works well now.

Works really well. Rewired my pool power system with this to trigger power to my pool chlorinator. Runs the chloranotor any time the pump is on and shuts down when the pump does. Basic wiring skills and additional relays were required.

Works great powering a small chemical injection pump for my well

Works as intended.

Good product, works well.