Siemens 141-0574 Differential Static Pressure Airflow Switch, Auto Reset Action, Silver

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Siemens 141-0574 Differential Static Pressure Features

• Field adjustable set point range: 0.05 inch to 1.0 inch WC (12.5 pa to 250 pa)

• Switching action: SPDT/auto reset; switch rating (non inductive): 15a @ 120-277 vac. Pilot duty 300Va @ 120-277 vac

• Switching differential: approx. 0.6 inch to 0.6 inch WC (15 pa to 150 pa)

• For use with air only. Functionally replaces: afs-531. See data sheet for details. Uses pressure pickup probe 269-062 (sold separately)

About Siemens 141-0574 Differential Static Pressure

The airflow switch senses static differential pressure and the diaphragm operated snap switches actuate electrical circuits. This 141-0574 provides automatic reset. Auto reset switches should be used for applications requiring positive proof of airflow (or Fan operation) or to detect high differential pressures associated with dirty air filters or similar maintenance alarms not requiring safety lock-out (shut down) of the Fan.