Penn F61KB Air Flow Switch

Penn F61KB Air Flow Switch is a paddle-type air flow switch designed to detect the presence or absence of air flow in ducts or ventilation systems. It is typically used to control fans, alarms, or automatic dampers to ensure proper air circulation in HVAC systems. It offers reliable operation with an adjustable setpoint and a durable construction for industrial or commercial applications. Technical specifications: Model: F61KB-11C Type: Paddle air flow switch Flow medium: Air or non-corrosive gases Setpoint range: 1.27 to 8.9 m/s (250 to 1750 fpm) adjustable Contact type: SPDT (Single-Pole, Double-Throw) snap action switch Contact rating: 5.8 A at 120/240 VAC, 1/4 HP at 120 VAC, 1/2 HP at 240 VAC Electrical connections: Screw terminals Conduit connection: 1/2 in. NPSM Maximum operating pressure: 1,000 Pa (0.15 psi) Paddle material: Stainless steel Body material: Zinc-plated steel housing Temperature range (ambient): -29°C to +66°C (-20°F to +150°F) Humidity range: 0–95% RH non-condensing Mounting: Duct mount, with 1 in. NPT male connection Enclosure rating: NEMA 1 (for indoor use) Differential: Fixed, approximately 0.5 m/s (100 fpm) Country of manufacture: United States (by Johnson Controls, Penn Division) Please review pictures carefully and let us know if you have any questions!