For an 11-pin off-delay timing relay, what happens when the external switch is opened?

In an 11-pin off-delay timing relay, when the external switch is opened, the operation of the relay is governed by its design and function. Specifically, in this scenario, as the switch opens, the relay will cause the normally open (NO) timed contacts to open and the normally closed (NC) timed contacts to close.

This behavior occurs because off-delay timing relays are built to maintain their output for a specific period after the control input (in this case, the external switch) has been removed. When the external switch opens, the relay latches and will keep the NO contacts closed for the duration of the timing cycle before returning to their default state. During the timing cycle, the NO contacts that would typically close when energized will now open, while the NC contacts will shift to a closed state, maintaining the circuit.

This functionality allows for the delayed operation of connected devices or systems, ensuring a smooth transition rather than an abrupt change. As such, understanding the implications of switching in timing relays is critical in applications where timing is essential for process control and electrical safety.