Belimo AFB24-SR-S Damper Actuator 24V Spring Return 180 in-lb 2-10V Control

The Belimo AFB24-SR-S is a spring-return damper actuator designed for reliable HVAC damper control in commercial and industrial applications. This versatile actuator features 180 in-lb of torque output, providing sufficient force for most standard damper configurations.

Key Features:

• Spring-return operation for fail-safe positioning during power loss
• Multiple control signal compatibility: 2-10 VDC, 4-20 mA, or 0-10 VDC
• 24 VAC/DC power supply operation
• 180 in-lb (20 Nm) torque output
• Integrated auxiliary switch for position feedback
• 95-second running time for full stroke
• Durable construction suitable for commercial HVAC environments
• Direct mounting to damper shafts from 1/4" to 5/8"

The AFB24-SR-S includes auxiliary switch contacts for remote position indication or integration with building automation systems. The spring-return mechanism automatically drives the damper to the fail-safe position when power is removed, making it ideal for smoke control, outside air, and fire/smoke damper applications where safety positioning is critical.

This actuator is compatible with Belimo's proven damper mounting system for quick, secure installation and long-term reliability.