Belimo AFRB24 Actuator Motor

The Belimo AFRB24 is a heavy-duty spring return actuator engineered for on/off control in mission-critical HVAC systems. Delivering a robust 180 in-lb torque, this unit is designed to automate control dampers and large-scale valves with precision. Operating on a universal 24VAC/DC power supply, the AFRB24 ensures reliable fail-safe positioning during power loss, critical for protecting coils and maintaining building pressure. Its brushless DC motor technology eliminates the failures common with traditional brushed motors, extending service life in high-cycle applications. With a NEMA 2 (IP54) rating and a 95-degree rotation range, this actuator integrates seamlessly into standardized damper linkage assemblies. For contractors, the tool-free manual override and adjustable mechanical end stops simplify the commissioning process on-site. Whether used in smoke control systems or standard air handling units, the Belimo AFRB24 mechanical fail-safe provides the necessary force to overcome high static pressures and seal-off requirements.

• Fail-Safe Reliability: Spring return mechanism ensures 100% closure or opening during power interruptions.
• High Torque Output: Provides 180 in-lb of force to manage large damper areas without binding.
• Universal Compatibility: Works with both 24VAC and 24VDC control circuits for versatile field application.
• Simple Installation: Standardized clamp design fits various shaft sizes, reducing the need for specialized adapters.
• Brushless Technology: Maintenance-free operation with integrated electronic stall protection to prevent motor burnout.

What is the typical run time for the Belimo AFRB24?

The motor provides a consistent run time of less than 75 seconds for 95 degrees of rotation, while the spring return achieves fail-safe positioning in less than 20 seconds.

Can the AFRB24 be mounted in any orientation?

Yes, the actuator is designed for multi-position mounting, though it is standard practice to avoid upside-down installation in environments where moisture could collect in the housing.

Does this unit require an end switch?

While the base AFRB24 is an on/off model, it features electronic stall detection throughout its rotation, meaning it does not require limit switches to stop the motor at the end of the stroke.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.