Relay coil with switch-off delay (AC)

The relay coil picks up immediately when AC current is applied to it and then drops out after a preset time when current is no longer flowing through it. The relay coil can also be actuated with direct current. In this case though, it must be noted that a higher actuating current flows through the coil due to the lack of reactance.

The relay coil is modeled as a series connection of an ideal resistor and an ideal coil. The resistance and inductance are automatically calculated from the component parameters.