When coil voltage is applied to a solid-state interval relay, the contacts change state when?

When coil voltage is applied to a solid-state interval relay, the contacts change state immediately as a response to the voltage being applied. Solid-state relays operate quickly because they do not have mechanical components that require time to move and make contact. Instead, they rely on electronic components, allowing them to switch states without the mechanical delay typically seen in electromechanical relays.

This characteristic is fundamental for applications needing precise and fast switching without delay. Understanding this immediate response is crucial for properly integrating solid-state interval relays into control circuits, ensuring that systems function reliably and efficiently.