Cleveland Controls AFS-305 Switch

The Cleveland Controls AFS-305 is a high-performance differential pressure switch engineered for precise monitoring of air flow and pressure in commercial HVACR systems. This manual reset air switch features an adjustable set point range from 0.40" ± 0.06" to 12.0" w.c., making it ideal for clogged filter detection and burner fan supervision. Built with a robust SPDT contact arrangement and a 1/2 PSI maximum pressure rating, the AFS-305 ensures reliable electrical switching for safety circuits. The unit utilizes a 1/4" OD sample line connection, allowing for seamless integration into existing pitot tube sensing setups. Designed specifically for air and non-combustible gases, this diaphragm-actuated switch provides the mechanical durability required in industrial air handling units. Technical contractors rely on the AFS-305 to maintain static pressure monitoring standards and ensure system compliance across demanding ventilation applications.

• Manual Reset Mechanism: Ensures critical system faults are inspected by a technician before restarting equipment.
• Wide Set Point Range: Offers versatile field adjustment between 0.40" and 12.0" w.c. to meet varying airflow requirements.
• Rugged Enclosure: Features a die-cast aluminum housing for long-term stability in mechanical rooms.
• Universal Compatibility: Standard 1/4" compression fittings facilitate quick installation with common pressure sensing probes.

The SPDT contacts allow for either normally open or normally closed configurations; for lockout applications, use the NC terminal to break the limit string upon a pressure drop or rise beyond the set point.

No, the Cleveland Controls AFS-305 is specifically designed for air and non-combustible gases; liquid media will damage the internal silicone diaphragm.

To ensure the most accurate pressure switch calibration, mount the diaphragm in a vertical plane to prevent the weight of internal components from shifting the set point.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.