Which description applies to pushbutton switches with N.C. Contacts?

Pushbutton switches with normally closed (N.C.) contacts are designed to interrupt the circuit when activated. In a normally closed configuration, the contacts remain closed (allowing current flow) until the button is pressed. This action opens the circuit, stopping the current flow.

This functionality is often utilized in applications where it's critical to stop the operation of a machine or prevent a circuit from completing during an emergency or when maintenance is needed. The ability to interrupt the circuit makes N.C. pushbutton switches an essential component in various control systems, particularly for safety and control mechanisms.

The other descriptions do not accurately represent the functions of N.C. contacts. For instance, creating a closed circuit upon activation pertains to normally open (N.O.) contacts, while indicating status is not a primary function of these switches. Safety applications may use N.C. contacts, but they are not limited to that context, as many general control tasks can also employ them.