Drawing of how this relay would install in a water-cooling system. You can use them for anything you want. The contacts have a 10-amp rating. They can handle voltages across the contacts between 24-330 volt AC. The control circuit is 3-32 volt DC. Any application within these perimeters, these relays can be used. They work just like a coil type relay, but without any moving parts. Check there website site out.
www.idec.com