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Honeywell PA404A1033 Pressuretrol w/ Additive Differential
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Item Number: PA404A1033
Manufacturer Name: Honeywell
Manufacturer Part No: PA404A1033
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Overview
The PA404 is a series 40 (2-wire, SPST) pressuretrol controller for use in 24, 120, 240 or 277 volt control circuits or in self powered (millivoltage) applications.
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.
Product Specifications
- Application: Safety control for steam heating boilers
- Dimensions (in.): 4 15/32 in. high x 3 3/8 in. wide x 2 1/4 in. deep
- Dimensions (mm): 114 mm high x 86 mm wide x 58 mm deep
- Maximum Safe Operating Pressure (psi): 20 psi
- Maximum Safe Operating Pressure (kPa): 137 kPa
- Materials: Case: Gray enamel finish
- Comments: Recommended minimum set point is differential setting plus 1 1/2 psi.
- Electrical Ratings: 0.25 A @ 0.25 to 12 Vdc; 120 Vac, Resistive: 8.3A; 240 Vac, Resistive: 8.3A; 277 Vac, Resistive 7.2A
- Approvals, Underwriters Laboratories Inc.: UL Listed: File no. MP466, Guide no. MBPR.
- Approvals, CSA: CSA Listed: File no. LR1620.
- Tradeline Value: Tradeline
- Operating Humidity Range (% RH): 95% RH, non-condensing
- Temperature Ratings (C): 66 C - Maximum Ambient
- Temperature Ratings (F): 150 F - Maximum Ambient
- Sensor Element: Stainless Steel diaphragm
- Operating Range (psi): 0.5 psi to 9.0 psi Adjustable
- Operating Range (kPa): 3 kPa to 62 kPa Adjustable
- Differential Pressure Range (psi): 1 to 5 psi Adj.
- Differential Pressure Range (kPa): 7 to 35 kPa Adj.
- Differential Type: Additive
- Switching Action: Makes at set point on pressure fall; Breaks at set point plus differential on pressure rise
- Pressure Surge (max. psi): 50 psi
- Pressure Surge (max. kPa): 345 kPa
- Adjustable Scale Range (psi): 0.5 psi to 9 psi
- Adjustable Scale Range (kPa): 3 kPa to 62 kPa
- Pilot Duty Ratings: 150 VA @ 277 Vac
- Switch Type: SPST snap-acting switch
- Pipe Connection: 1/4 in. female pipe threads
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Product Reviews
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