Belimo AFB24 Actuator

The Belimo AFB24 is a robust heavy-duty spring return actuator engineered for precise on/off mechanical fail-safe operation in demanding HVAC systems. Delivering 180 in-lb of torque, this motor is designed to drive large control dampers or valves to a safe position during power loss. Operating on a universal 24VAC/DC power supply, it offers flexible integration for commercial retrofits and new builds alike. As a direct replacement for the legacy AFR24, it features a standardized square shaft clamp and universal mounting bracket, ensuring a seamless drop-in installation without extensive field modifications. The brushless DC motor technology eliminates the risk of burnout due to stalling, significantly extending the service life of the damper motor. With its NEMA 2 (IP54) rated housing and manual override crank, the AFB24 actuator provides the reliability contractors require for high-load air handling units and smoke/fire safety dampers where consistent mechanical torque is critical.

• 180 in-lb Torque Output: Provides ample power for large-scale dampers and high-pressure valves.
• Universal Compatibility: Operates on both 24VAC and 24Vdc circuits for versatile field application.
• Legacy Replacement: Designed as the standard AFR24 replacement, utilizing existing footprints for faster swap-outs.
• Mechanical Fail-Safe: Reliable spring return mechanism ensures a positive seal or open state during power interruptions.
• Low Power Consumption: Efficient brushless motor design reduces transformer loading and energy overhead.

Is the Belimo AFB24 compatible with older AFR series installations?
Yes, the AFB24 is the engineered successor to the AFR24, maintaining the same form factor and torque profile for direct replacement in existing systems.

Can this actuator be mounted in any orientation?
The unit is designed for multi-position mounting; however, it should not be installed upside down (shaft pointing up) in areas where moisture may collect in the housing.

Does the AFB24 include an auxiliary switch?
The standard AFB24 model is a basic on/off unit. If end-switch feedback is required for position verification, the AFB24-S model should be sourced.

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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.