What is the minimum voltage needed to activate coil on the Kacon 730-1TB-110VAC relay? Would 70 volts be enough? Kacon 730-1TB-110VAC Relay, SPST, 110V AC, Screw Terminal, Panel Mount

Status: Open Sep 25, 2026 - 04:14 PM

Relays

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Staff Answer

Sep 28, 2026 - 08:54 AM

The Kacon 730-1TB-110VAC relay has a minimum operating voltage that is 80% of the rated voltage. For this model, the rated voltage is 110VAC, so the minimum would 88VAC. Therefore 70 volts would not be enough to activate the coil. On a related note, the dropout voltage would be 30% of the nominal voltage, or 33VAC.