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

The Belimo EFB24-SR is a 24-volt spring return damper actuator designed for HVAC applications requiring fail-safe positioning. This actuator delivers 270 inch-pounds of torque, making it suitable for controlling medium to large dampers in commercial building automation systems.

Key Features:

• 270 in-lb (30 Nm) torque output for reliable damper control
• Spring return mechanism provides fail-safe positioning during power loss
• 2-10 VDC modulating control signal for precise damper positioning
• 24 VAC power supply for standard HVAC system integration
• Non-spring return direction closes damper on power failure for safety
• Robust construction for long-term reliability in commercial applications
• Direct mounting to damper shafts with universal brackets

The EFB24-SR is ideal for commercial HVAC applications including VAV systems, air handlers, and economizer dampers where reliable fail-safe operation is required. The spring return design ensures dampers return to a safe position during power interruptions, making it suitable for smoke and fire damper applications when properly configured.