Pushing Plate activates a momentary cherry switch.
Momentary switches may be normally open or normally closed
(depending on users wiring choice).
A normally open switch doesn't make contact until and unless it is held down.
A normally closed switch is always making contact until the button is pushed.
Cherry Switch single-pole, 15 A, COM / NO / NC

The PBR series is a standard 6 inch round push plate with a premium design for wall applications, as well as functional, aesthetically appealing and weather resistant.

Contacts:

N/O - Normally Open

N/C - Normally Closed

C - Common

Contact Current Rating:

15 Amps