Product Overview
Belimo AFB24 Fail-Safe Damper Actuator
The Belimo AFB24 is a fail-safe damper actuator designed for on/off control of air dampers. It operates with a 24V power supply and provides a minimum torque of 180 in-lb.
The AFB24 actuator ensures reliable operation by using a spring return mechanism. This maintains constant torque even without power.
You can mount it directly to a damper shaft up to 1.05 inches in diameter using its universal clamp.
Part Details:
- Power Supply: 24 VAC ± 20%, 24 VDC +20% / -10%
- Power Consumption: 5 W running, 2.5 W holding
- Torque: Minimum 180 in-lb (20 Nm)
- Control: On/off
- Rotation: 95° with adjustable mechanical end stop (35° to 95°)
- Running Time: Motor < 75 seconds, Spring return 20 seconds @ -4°F to 122°F
- Position Indication: Visual indicator, 0° to 95°
- Manual Override: 5 mm hex crank (3/16" Allen), supplied
- Mounting: Directly to damper shaft up to 1.05 inches in diameter
- Housing: NEMA 2, IP54
- Ambient Temperature: -22°F to 122°F
- Humidity: Max 95% RH, non-condensing
- Noise Level: <50 dB(A) motor, ≤62 dB(A) spring return
- Weight: 4.6 lbs (2.1 kg)
- Auxiliary Switches: 2 x SPDT (optional), 3A @ 250 VAC
- Protection: Overload protection electronic throughout 0-95° rotation
- Certifications: cULus, CE
Documentation:
