Resideo PA404A1025/U Pressuretrol Controller with Subtractive 1 to 5 psi Differential Pressure

Product Description

The Resideo PA404A1025/U is a Pressuretrol controller designed for safety in steam heating boiler applications. It features a series 40 two-wire, SPST design for use in 24, 120, 240, or 277 volts control circuits. This controller breaks the electrical circuit to shut down the burner when steam pressure exceeds safe levels.

• Built-in mechanism to prevent unsafe pressure levels.
• Adjustable set point without needing to remove the cover.
• Compatible with self-powered (millivoltage) applications.

Product Highlights

The PA404A1025/U controller works by utilizing a sensitive pressure actuated diaphragm that adjusts based on pressure changes. A lever mechanism operates a snap switch to control the burner behavior. The adjustment dial inside the case allows easy differential manipulation for accurate settings.

Product Information

Standard Information

• Controller Type: AutoFill
• Application: Safety Control For Steam Heating Boilers

Technical Specifications

• MPN: PA404A1025/U
• Switch Operation: Pressure actuated SPST, snap-action
• Operating Voltage: 24, 120, 240, or 277 V
• Color: Gray
• Size: 1/2 inch
• Relative Humidity Max: 95% RH, non-condensing
• Compatible With: Steam Heating Boilers
• Approvals: UL Listed, CSA Listed