Description
The Belimo AFRB24 is a heavy-duty, spring return damper actuator engineered for reliable On/Off control in commercial and industrial HVAC applications. Designed to deliver 180 in-lb of torque, this actuator provides the muscle needed to drive large or high-resistance dampers with confidence. Its spring return mechanism ensures fail-safe operation — automatically returning the damper to its pre-set safe position in the event of a power loss, making it an ideal choice for critical ventilation and smoke control systems.
Compatible with both 24Vac and 24Vdc power supplies, the AFRB24 offers installation flexibility across a wide range of building automation and control systems. Belimo’s proven actuator technology delivers consistent, repeatable performance over millions of operating cycles, reducing maintenance demands and total cost of ownership.
Key Features
- Spring return, fail-safe design for automatic damper positioning on power loss
- 180 in-lb nominal torque output for large or high-resistance damper applications
- On/Off control signal for straightforward integration with BAS and control panels
- Dual voltage compatibility: 24Vac / 24Vdc power supply
- Compact, rugged housing suitable for commercial and industrial HVAC environments
- Designed for long service life with minimal maintenance requirements
Specifications
- Brand: Belimo
- SKU / Model: AFRB24
- Actuator Type: Spring Return
- Torque: 180 in-lb
- Control Type: On/Off
- Power Supply: 24Vac / 24Vdc
Applications
- Commercial HVAC air handling units
- Ventilation and exhaust damper control
- Building automation systems (BAS)
- Smoke and fire control damper applications requiring fail-safe return
- Industrial process ventilation







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