Barber Colman PF-307 Switch

The Barber Colman PF-307 is a differential pressure switch designed for dependable performance in HVAC and pneumatic control systems. It monitors the pressure difference between two points and triggers an SPDT electrical contact when a pre-set threshold is reached. Built for commercial and industrial environments, the PF-307 helps protect equipment and maintain system efficiency. Now offered through Schneider Electric, this switch carries forward Barber Colman’s trusted engineering.

Technical Specifications

  • Model: PF-307
  • Type: Differential Pressure Switch
  • Contact Type: SPDT (Single Pole Double Throw)
  • Pressure Range: Field adjustable
  • Operating Pressure: Up to 30 psi (varies by application)
  • Mounting: Panel or duct-mounted
  • Housing: Durable metal construction
  • Manufacturer: Barber Colman (Schneider Electric)

Key Features

  • Monitors differential air or fluid pressure
  • SPDT contact for versatile electrical integration
  • Field-adjustable pressure setpoint
  • Rugged housing for long-term reliability
  • Easy installation and calibration
  • Ideal for fan status, filter monitoring, and air flow control

Compatible Components & Accessories

  • Pneumatic and electronic control panels
  • Barber Colman relays and controllers
  • Tubing kits and mounting hardware
  • Schneider Electric automation components

Industry Applications

  • HVAC systems and air handlers
  • Filter and fan status monitoring
  • Duct static pressure sensing
  • Clean rooms and laboratory ventilation
  • Commercial building automation systems

Installation & Maintenance Notes

  • Mount near source of differential pressure
  • Connect high and low pressure ports with proper tubing
  • Adjust setpoint to desired differential level
  • Test switch operation during commissioning
  • Inspect tubing and contacts periodically to ensure accuracy


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