Belimo AFB24-SR 24V Spring Return Modulating Actuator 180 in-lb Torque

The Belimo AFB24-SR is a professional-grade spring return modulating actuator designed for precise control of dampers and valves in commercial HVAC systems. Powered by 24V AC/DC, this actuator delivers 180 in-lb (20 Nm) of torque for reliable operation on larger damper applications.

Key Features:

• Spring return mechanism ensures fail-safe positioning during power loss
• Dual control signal compatibility: 2-10 VDC or 4-20 mA input
• 180 in-lb (20 Nm) torque output for demanding applications
• 95-second nominal running time for smooth modulating control
• Direct mount design for standard damper shaft connections
• Auxiliary switches for position feedback and monitoring
• UL and cUL recognized for North American installations

This actuator serves as a direct replacement for the legacy Belimo AFA24-SR model, offering improved reliability and performance. The spring return function automatically returns the actuator to its fail-safe position when power is removed, making it ideal for safety-critical applications such as smoke dampers and outside air control. Compatible with most building automation systems through industry-standard analog control signals.