Description
The Honeywell AP5208-30 is a precision-engineered air flow switch designed to prove airflow in a wide range of HVAC and air handling applications. With a sensing range of .05 to 12 inches water column (w.c.), this switch accommodates everything from low-velocity duct systems to higher-pressure air circuits, making it a versatile solution for residential, commercial, and light industrial installations.
The Single Pole Double Throw (SPDT) configuration provides both a normally open (NO) and normally closed (NC) contact set, giving technicians and controls engineers the flexibility to integrate the switch into virtually any control circuit — whether for safety interlocks, fan proving, or system status indication. Barbed fittings on both the high- and low-pressure ports allow for quick, secure connection of standard pneumatic or sensing tubing without the need for additional adapters.
Key Features
- Wide sensing range: .05 to 12″ w.c. differential pressure
- Single Pole Double Throw (SPDT) switching action — provides both NO and NC contacts
- Barbed fittings for easy, tool-free tubing connection
- Suitable for duct-mounted airflow proving in AHUs, RTUs, and fan coil units
- Compact, field-installable design for straightforward integration into existing control panels
- Reliable switching action helps protect equipment from no-flow or low-flow conditions
Typical Applications
- Fan and blower airflow proving
- Air handling unit (AHU) safety interlocks
- Rooftop unit (RTU) airflow monitoring
- Filter status indication (dirty filter detection)
- Duct pressure differential monitoring
- Building automation and DDC system integration
Specifications
- Model: AP5208-30
- Brand: Honeywell
- Sensing Range: .05 – 12″ w.c.
- Switch Type: Single Pole Double Throw (SPDT)
- Port Connections: Barbed Fittings
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