BF24-TN | Belimo Fire Damper Actuator Spring Return 24V With Auxiliary Switches

Belimo · Fire & Life Safety

Description  The Belimo BF24-TN is a spring-return fire damper actuator designed for reliable fail-safe operation on life-safety HVAC systems. The BF24-TN provides controlled motor positioning and rapid spring-driven closure to ensure secure damper positioning during power loss or emergency conditions.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category HVAC Actuators Part Number BF24-TN Subcategory Fire Damper Actuators Nominal Voltage AC/DC 24 V Nominal Frequency 50/60 Hz Voltage Range AC 19.2…28.8 V / DC 21.6…28.8 V Power Consumption (Operation) 7 W Power Consumption (Rest) 2 W Power Consumption (Wire Sizing) 10 VA Inrush Current 8.3 A @ 5 ms Motor Torque 18 Nm Fail-Safe Torque 12 Nm Angle of Rotation Max. 95° Running Time (Motor) <120 s / 90° Running Time (Fail-Safe) 16 s @ 20°C Auxiliary Switches 2x SPDT, 5° / 80° Protection / Cabling Halogen-free cables Service Life Min. 60,000 safety positions Weight 2.7 kg   Information About BF24-TN The BF24-TN is a fire damper actuator from Belimo engineered specifically for safety-related air control applications where dependable fail-safe performance is required. It features a robust electromechanical design with integrated spring return, supporting precise damper actuation under normal operation and automatic positioning during power interruption. The BF24-TN supports AC/DC 24 V control and includes dual auxiliary switches for position feedback and system interlocking. Its compact form factor, halogen-free cabling, and selectable mounting direction allow integration into a wide range of fire and smoke damper assemblies in commercial and industrial HVAC installations. Key Features Spring-Return Fail-Safe Operation: Provides automatic damper movement to the safety position during power loss using a high-reliability spring mechanism. AC/DC 24 V Control Power: Supports standard low-voltage HVAC control systems with stable operation across a wide voltage tolerance range. High Torque Output: Delivers 18 Nm motor torque and 12 Nm fail-safe torque to ensure dependable damper positioning under load. Dual Auxiliary Switches: Equipped with 2x SPDT switches for precise position indication and integration with monitoring or control systems. Manual Override Capability: Includes a manual override with position stop to allow commissioning, testing, or maintenance without power. Quiet and Efficient Operation: Maintains low sound power levels during both motor-driven and fail-safe operation. Long Service Life: Designed for a minimum of 60,000 safety cycles to support long-term operation in critical environments. The BF24-TN delivers the reliability and precision required for fire and smoke damper actuation in safety-critical HVAC systems.

Brand: Belimo · Category: Fire & Life Safety

Key features

• Spring-Return Fail-Safe Operation: Provides automatic damper movement to the safety position during power loss using a high-reliability spring mechanism.
• AC/DC 24 V Control Power: Supports standard low-voltage HVAC control systems with stable operation across a wide voltage tolerance range.
• High Torque Output: Delivers 18 Nm motor torque and 12 Nm fail-safe torque to ensure dependable damper positioning under load.
• Dual Auxiliary Switches: Equipped with 2x SPDT switches for precise position indication and integration with monitoring or control systems.
• Manual Override Capability: Includes a manual override with position stop to allow commissioning, testing, or maintenance without power.
• Quiet and Efficient Operation: Maintains low sound power levels during both motor-driven and fail-safe operation.
• Long Service Life: Designed for a minimum of 60,000 safety cycles to support long-term operation in critical environments.

Specifications

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