Description
Overview
The Johnson Controls P32AF-1 is a sensitive differential pressure switch engineered for precise airflow and pressure monitoring in HVAC and building automation applications. With a wide adjustable range of 0.05″ W.C. to 5″ W.C., this switch delivers reliable detection across a broad spectrum of low-differential-pressure conditions, making it ideal for filter monitoring, fan proving, damper status verification, and duct pressure control.
Key Features
- SPDT (Single-Pole, Double-Throw) switching action for versatile control circuit integration
- Wide adjustable setpoint range: 0.05″ W.C. to 5″ W.C.
- Convenient scale plate for easy, accurate setpoint adjustment in the field
- Includes L bracket for straightforward panel or duct mounting
- NEMA 1 enclosure rating for indoor installations
- Rated for 1/4 horsepower motor loads
- Dual voltage compatibility: 120/240 VAC
Specifications
- Model: P32AF-1
- Brand: Johnson Controls
- Switch Type: SPDT
- Pressure Range: 0.05″ W.C. to 5″ W.C. (adjustable)
- Enclosure: NEMA 1
- Voltage Rating: 120/240 VAC
- Motor Load Rating: 1/4 HP
- Mounting: L Bracket included
- Setpoint Indicator: Scale Plate
Applications
- Air filter status monitoring and dirty filter detection
- Fan/blower proving in air handling units
- Duct static pressure control
- Damper position verification
- Building automation and HVAC control systems
Why Choose the Johnson Controls P32AF-1?
Designed for sensitivity at the low end of the pressure spectrum, the P32AF-1 excels where standard pressure switches fall short. The included scale plate takes the guesswork out of field calibration, while the L bracket simplifies installation on panels, ducts, or equipment enclosures. Dual-voltage compatibility at 120/240 VAC ensures broad applicability across commercial and light industrial HVAC systems.
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