3 Answers. I've always assumed the opposite of "momentary" was "toggle". The wikipedia entry appears to confirm this: The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts, which are connected to external circuits.
Keeping this in consideration, how does a momentary switch work?
How Does a Momentary Switch Work? Switches change an electrical circuit by making or breaking a contact. Usually, the switch makes a change that stays in effect until the switch is used again. For example, a light switch turns the lights on (or off) and they stay on (or off) until the switch is used again.
What is a momentary action switch?
The momentary push-button switch is a type of biased switch. The most common type is a "push-to-make" (or normally-open or NO) switch, which makes contact when the button is pressed and breaks when the button is released.