Motor Logic solid state overload relays are designed to protect 50/60 Hz, 3 phase AC motors from overload, phase unbalance, and phase loss conditions. Motor Logic overload relays use this isolation alarm contact. This alarm contact can be 1 normally open or 1 normally closed contact that will close when the motor logic overload relay is tripped. This can be used to send an alarm signal. The contact is field convertible. The contact is 600 volt rated. Kit is UL Listed.