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Honeywell PA404A1009/U Pressure Controller, 150 deg F Control, SPST Snap Action Switch, 1 to 5 psi Adjustable Differential

HONPA404A1009U MFG #: PA404A1009/U
Honeywell PA404A1009/U Pressure Controller, 150 deg F Control, SPST Snap Action Switch, 1 to 5 psi Adjustable Differential
  • Control Range: 150 deg F
  • Switch Action: Snap Action
  • Switch Type: SPST
  • Connection Type: FNPT
  • Differential Pressure Range: 1 to 5 psi Adjustable
  • Dimensions: 3-3/8 in W x 2-1/4 in D x 4-15/32 in H
  • Finish: Gray Enamel
  • Manufacturer: Honeywell
  • Manufacturer #: PA404A1009/U
  • Series: PA404
The PA404 is a series 40 (2-wire, SPST) pressuretrol controller for use in 24, 120, 240 or 277 V control circuits or in self powered (millivoltage) applications.

Pressure Controller, Series: PA404, 150 deg F Control Range, SPST Switch, Snap Action, 1 to 5 psi Adjustable Differential Pressure Range, FNPT, Gray Enamel, 3-3/8 in W x 2-1/4 in D x 4-15/32 in H
  • Features
  • The PA404A is a pressure actuated high limit, safety control for steam heating boilers, it breaks an electrical circuit to shut down the burner if steam pressure rises above a safe level
  • The PA404B is used with suspension-type unit heaters to make the fan circuit when a pressure rise indicates the presence of steam
  • Each model contains an SPST micro switch snap-acting switch
  • Sensitive pressure-actuated diaphragm expands or contracts with pressure variations, moving a lever mechanism which operates the snap switch
  • A screw on top of the case allows set point adjustment without removing the cover
  • Differential is adjusted by means of a dial located inside the case
  • Without lugs