Description
The Xylem-McDonnell & Miller 310488 Snap Switch 42S SWA42S is a control component used to sense mechanical position or pressure and activate electrical circuits as a result in HVAC systems. These open or close a contact point as an actuator arm or pressure element passes through a predetermined set point, allowing the system to respond to the movement. The internal mechanism that offers quick switching without much contact bouncing. It consists of attaching the switch to the control assembly designated and then wiring it into the control circuit.
