Packard PS400 Air Pressure Sensing Switch, Adjustable, RFS-4000, Cleveland Controls

Packard PS400 Air Pressure Sensing Switch with Adjustable Set Point. By Cleveland Controls RFS-4000 General purpose proving switches designed for HVAC and Energy Management applications. Sense Positive, Negative, or Differential Air Pressure. Mounting: With The Diaphragm In Any Vertical Plane. Connection: Screw Terminals With Cup Washers. Temperature Range: ºF -40 to 180. Switch Type: SPDT. Electrical Rating: 15 Amps Noninductive/277 VAC; 300VA Pilot Duty/115-277 VAC; 60 Hz Set Point: 0.15"±0.02"w.c. To 5" w.c. Adjustable Range: 0.17" w.c. To 5" w.c., 0.14" w.c. To 4.7" w.c.