AFB24-SR | Belimo Spring Return Damper Actuator 180 In Lb 24VACDC Modulating

Belimo · Motors & Motion

Description  The Belimo AFB24-SR is a spring return damper actuator designed for modulating control of HVAC air dampers using a 24 VAC/DC supply. With 180 in-lb torque output and proportional 2–10 V control, it supports precise airflow regulation and dependable fail-safe positioning.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category Damper Actuators Part Number AFB24-SR Subcategory Spring Return Damper Actuators Actuator Type Damper Actuator Control Type Modulating Control Signal 2…10 V (4…20 mA with resistor) 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 Torque Output 180 in-lb (20 Nm) Spring Return Yes Power Consumption (Operation) 5.5 W Power Consumption (Rest) 3 W Transformer Sizing 8.5 VA Position Feedback 2…10 V Angle of Rotation 35…95°, adjustable Running Time 95 s / 90° Protection Rating IP54, NEMA 2 Electrical Connection 18 AWG cable, 1 m, 1/2" NPT Weight 5.3 lb (2.4 kg)   Information About AFB24-SR The AFB24-SR is part of Belimo’s high-torque spring return damper actuator series engineered for precise modulating airflow control and safety operation. It incorporates an electronic overload protection system and a robust spring return mechanism that ensures rapid movement to a defined fail-safe position during power loss. The actuator supports proportional control signals and provides position feedback for integration with modern building automation systems. Designed for commercial HVAC applications, it offers flexible mounting, adjustable rotation limits, and compliance with UL Class 2 power requirements. Key Features High Torque Output of 180 in-lb: Provides reliable mechanical force for accurate positioning of large or high-resistance HVAC dampers. Spring Return Fail-Safe Function: Automatically drives the damper to a predetermined safety position when power is lost, supporting system protection requirements. Modulating Control Capability: Accepts 2–10 V control signals, with optional 4–20 mA operation, enabling precise proportional airflow regulation. Position Feedback Signal: Supplies a 2–10 V feedback output for real-time damper position monitoring and control system verification. Adjustable Rotation Range: Mechanical end stops allow the angle of rotation to be set between 35° and 95° for application-specific requirements. Electronic Overload Protection: Protects the actuator throughout the full rotation range, reducing wear and preventing motor damage. Manual Override Capability: Includes a hex crank for manual positioning during commissioning or maintenance activities. The AFB24-SR delivers the reliability and precision required for modulating spring return damper control in demanding commercial HVAC airflow management systems.

Brand: Belimo · Category: Motors & Motion

Key features

• High Torque Output of 180 in-lb: Provides reliable mechanical force for accurate positioning of large or high-resistance HVAC dampers.
• Spring Return Fail-Safe Function: Automatically drives the damper to a predetermined safety position when power is lost, supporting system protection requirements.
• Modulating Control Capability: Accepts 2–10 V control signals, with optional 4–20 mA operation, enabling precise proportional airflow regulation.
• Position Feedback Signal: Supplies a 2–10 V feedback output for real-time damper position monitoring and control system verification.
• Adjustable Rotation Range: Mechanical end stops allow the angle of rotation to be set between 35° and 95° for application-specific requirements.
• Electronic Overload Protection: Protects the actuator throughout the full rotation range, reducing wear and preventing motor damage.
• Manual Override Capability: Includes a hex crank for manual positioning during commissioning or maintenance activities.

Specifications

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