Belimo EFB24-SR-S 24V Spring Return Damper Actuator, 270 in-lb, 2-10 VDC

The Belimo EFB24-SR-S is a high-performance spring return damper actuator designed for precise HVAC damper control in commercial and industrial applications. This robust actuator delivers 270 in-lb of torque, making it suitable for controlling medium to large dampers in air handling systems.

Key Features:

• 270 in-lb (30 Nm) torque output for reliable damper positioning
• 24 VAC/DC power supply for flexible installation
• Spring return operation ensures fail-safe damper positioning during power loss
• 2-10 VDC modulating control signal for precise positioning
• Integrated end switches for monitoring damper position
• 90-second running time for smooth, quiet operation
• Direct mounting capability with industry-standard connections
• Durable construction suitable for demanding HVAC environments

The EFB24-SR-S features Belimo's proven spring return mechanism, which automatically returns the damper to a safe position in the event of power failure—ideal for fire and smoke damper applications or critical ventilation systems. The integrated end switches provide feedback for building automation systems, enabling precise control and monitoring. With its modulating 2-10 VDC control input, this actuator offers accurate positioning for optimal airflow management and energy efficiency.