Resideo PA404A1033/U Pressuretrol Controller with Additive 1 to 5 psi Differential Pressure
$203.14
SKU PA404A1033/U
Resideo PA404A1033/U Pressuretrol Controller with Additive 1 to 5 psi Differential Pressure
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.
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.
- 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 Data Sheet
Specifications
| Application: | Safety control for steam heating boilers |
| Dimensions: | 4 15/32 in. high x 3 3/8 in. wide x 2 1/4 in. deep |
| Maximum Safe Operating Pressure (psi): | 20 psi |
| Materials: | Case: Gray enamel finish |
| 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 and Standards: | UL Listed: File no. MP466, Guide no. MBPR., CSA Listed: File no. LR1620. |
| Operating Humidity Range (% RH): | 95% RH, non-condensing |
| Temperature Ratings (F): | 150 F - Maximum Ambient |
| Sensor Element: | Stainless Steel diaphragm |
| Operating Range (psi): | 0.5 psi to 9.0 psi Adjustable |
| 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 |
| Pipe Connection: | 1/4 in. female pipe threads |