There are two sorts of Durakool Momentary Push Button Switches: ‘Push to Makeand ‘Push to Break
A momentary ‘push to make’ switch allows the electricity flow between its two contacts while the button is depressed. Upon releasing the button, the circuit is broken. The sort of switch is also called a Normally Open (NO) Switch. (Examples: doorbell, keyboard keys, phone pad buttons, computer power switch).
Durakool momentary ‘push to interrupt’ switches work in the other option to a push to make switch. When the button isn’t pressed, electricity flows, but upon pressing the button, the circuit is broken. This sort of switch is also called a Normally Closed (NC) Switch. (Examples: Refrigerator light, Alarm Switches in Fail-Safe circuits).