Description
The Lochinvar & A.O. Smith 100277797 Momentary Switch is a spring-return push actuator that briefly completes an electrical circuit only while pressed, then automatically returns to its resting position. Rated for 20 amps at 125 volts, it is capable of handling low to moderate control loads within boiler and water-heating control circuits, allowing short-duration electrical input without continuous current flow in HVAC systems. The red push-button interface provides direct manual signaling for operates such as reset or control activation, while the momentary action ensures the signal is temporary and does not remain activated after release.









