The A3PBF1-6007-01 is a 2-position momentary flush push button with a single normally-closed (1NC) contact. This is a panel-mount operator, typically used for start/stop or reset functions on control stations where a maintained flush profile is needed and the circuit is normally closed, opening only while the button is pressed.
The flush actuator sits nearly flush with the panel surface, reducing the risk of accidental actuation in a crowded enclosure. The 1NC contact arrangement means the circuit is closed at rest and opens on actuation — a common fail-safe configuration for emergency-stop or guard interlock circuits, though the momentary action means the button must be held to maintain the open state.