Pressuretrol Pressure Controller 1 to 5 psi Differential
SKUPA404A-1033
Description
The PA404 is a series 40 (2-wire, SPST) pressure controller for use in 24, 120, 240 or 277 volt control circuits or in self powered (millivoltage) applications.- 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 microns 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 adjustments without removing the cover
- Differential is adjusted by means of a dial located inside the case
- Color: GrayControl Range: 0.5 to 9 psiDifferential Pressure Range: 1 to 5 psiDimensions: 4-15/32 in H x 3-3/8 in W x 2-1/4 in DFinish: EnamelSwitch Action: Snap Acting ElectronicSwitch Type: SPST
- CSA File No LR1620
- Guide No MBPR
- UL File No MP466