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Honeywell Tradeline® PA404B1023/U Pressuretrol Controller, 0.5 to 9 psi Control, Snap-Acting SPST Switch, 1 to 5 psi Differential

HONPA404B1023 MFG #: PA404B1023/U
Honeywell Tradeline® PA404B1023/U Pressuretrol Controller, 0.5 to 9 psi Control, Snap-Acting SPST Switch, 1 to 5 psi Differential
  • Control Range: 0.5 to 9 psi
  • Switch Action: SPST
  • Switch Type: Snap-Acting
  • Color: Gray
  • Connection Type: 1/4 in FNPT
  • Differential Pressure Range: 1 to 5 psi
  • Dimensions: 4-15/32 in H x 3-3/8 in W x 2-1/4 in D
  • Finish: Enamel Case
  • Manufacturer: Honeywell
  • Manufacturer #: PA404B1023/U
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.

Tradeline® Pressuretrol Controller, 0.5 to 9 psi Control Range, Snap-Acting Switch, SPST, 1 to 5 psi Differential Pressure Range, 1/4 in FNPT, Enamel Case, Gray, 4-15/32 in H x 3-3/8 in W x 2-1/4 in D
  • Features
  • With additive 1 to 5 psi differential pressure
  • 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
  • 20 psi maximum safe pressure
  • Electrical Rating: 0.25 A at 0.25 to 12 VDC, 120 VAC, Resistive: 8.3 A, 240 VAC, Resistive: 8.3 A, 277 VAC, Resistive: 7.2 A
  • 95% RH, non-condensing humidity
  • 150 deg F ambient temperature
  • Additive or subtractive differential
  • Switching Action: Makes at set point plus differential on pressure rise, breaks at set point on pressure fall
  • 50 psi surge
  • Pilot Duty Rating: 150 VA at 277 VAC