CR Magnetics CR4395-EH-120-110-X-CD-ELR-I Current Sensing Relay with Internal Transformer, 120 VAC, Energized on High Trip, 1 - 10 AAC Trip Range
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A resistive load is rated at 20A for the NO (Normally Open) output contacts. The output contacts are rated 10A resistive for either 240Vac or 28Vdc, and the NC (Normally Closed) output contacts are rated 10A resistive for both.
This device does not have a built-in power supply. You must power the relay's common terminal (24 volts, DC, 120 volts, and so on). ) Then connect the relay's NO or NC side to the load.
Selected User Reviews For CR Magnetics CR4395-EH-120-110-X-CD-ELR-I Current Sensing Relay with Internal Transformer, 120 VAC, Energized on High Trip, 1 - 10 AAC Trip Range
The adjustable trip range from 1 to 10 Amp AC is very useful. There are also circuit wiring diagrams. Using multiple loops through the coil, you can get a trip range of less than 1 Amp, 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 when I turn on my new A/V Receiver, my main power amplifiers in my A/V system are turned on. br>I used to have a receiver that would work with a computer. The new receiver apparently draws too little current (or too much when turned "off") to work with a switching power strip of this type (Smart Strip), so it wouldn't work. I looked for another ready-made outfit but couldn't find one. I came up with a solution, but I ended up having to build my own relay out of this relay. IMPORTANT NOTE: PLEASE READ THE FOLLOWING INFORMATION CAREFULLY. This isn't a sales pitch. It's a plug-and-play device that's meant to be used as part of industrial or commercial machinery. There are 120 VAC contacts that are exposed. To ensure safety, place it in a sealed electronic box with a fuse. If you're not an experienced electronic hobbyist or engineer who can read a circuit wiring diagram, this is not the product for you.
I used it to turn on the sound system while watching TV, and it worked perfectly. Mine had a switching sensitivity of 10 (in one pass). I used five loops and 100 amps to get 2-amps. 20 amp. The television current was measured at 3 amps, and it worked perfectly. To troubleshoot it, I used an ammeter while watching TV, and sure enough, it started at 3 amps for the first hour or two, then gradually dropped to 1. 8 amp! The relay tripped and the sound went off at that point. It was simple to fix. I increased the number of turns to ten to achieve a switching sensitivity of one. Everything is now working properly at 10 amp.
It performs admirably. This was used to rewire my pool's power system to activate the chlorinator. When the pump is turned on, the chloranotor is activated, and when the pump is turned off, it is deactivated. It was necessary to have basic wiring skills as well as additional relays.
It does exactly what it says.
This is an excellent product that performs admirably.