Can be used as proof relays, to detect tool wear, feed rates and loss of prime on pumps by detecting current levels. many different configurations can be used for differing uses.
On delay timer that starts its timer when power is applied. output contact is energized when the timing is complete, anywhere from 6 seconds to 10 minutes.
Donut or foot mounted CT used for transmitting current signal from the main conductors to the SymCom units where required.