Daikin-McQuay 300072083 SPDT Duct Air Flow Switch 0.05 In. WC

The Daikin-McQuay 300072083 is an OEM duct-mounted air flow switch designed to prove air flow in commercial HVAC systems. Featuring a Single Pole Double Throw (SPDT) switching configuration and a low actuation setpoint of 0.05 inches water column (in. WC), this switch is well suited for low-static-pressure applications where reliable airflow verification is critical.

This airflow proving switch is a direct replacement component for Daikin-McQuay commercial air handling units, fan coil units, and rooftop systems. It provides a safety interlock signal to the control system, confirming that sufficient airflow is present before enabling heating or cooling operation — helping to protect equipment and maintain system efficiency.

Key Features:

• SPDT switching — provides both normally open (N.O.) and normally closed (N.C.) contact outputs for flexible control wiring
• 0.05 in. WC actuation point — optimized for low differential pressure airflow detection
• OEM replacement part for Daikin-McQuay commercial HVAC equipment
• Used to interlock HVAC controls and confirm air flow is established before system operation
• Durable construction suitable for duct installation in commercial and industrial environments

The Daikin-McQuay 300072083 air flow switch is a genuine OEM component, ensuring compatibility and reliable long-term performance in supported Daikin-McQuay systems. Always verify MPN compatibility with your specific unit before installation.