Product Overview
Belimo NFB24 Fail-Safe Actuator
The Belimo NFB24 is a fail-safe actuator. It controls HVAC air dampers using a 24V power supply.
This actuator provides reliable on/off damper control with a spring return feature. It provides dependable operation even in power loss.
Part Details:
- Nominal Voltage: AC/DC 24V
- Power Consumption: 6 W running, 2.5 W in rest
- Transformer Sizing: 8.5 VA
- Electrical Connection: 18 GA appliance cable, 3 ft with 1/2" conduit connector
- Overload Protection: Electronic throughout 0-95° rotation
- Torque: 90 in-lb [10 Nm]
- Direction of Motion: Selectable by ccw/cw mounting
- Manual Override: 5 mm hex crank (3/16" Allen), supplied
- Angle of Rotation: 95°, adjustable with mechanical end stop, 35-95°
- Running Time: 75 seconds (motor), <20 seconds (fail-safe)
- Noise Level: 50 dB(A) motor, 62 dB(A) fail-safe
- Protection Rating: IP54, NEMA 2
- Ambient Temperature: -22°F to 122°F
- Storage Temperature: -40°F to 176°F
- Humidity: Max 95% RH, non-condensing
- Weight: 4.9 lbs
- Housing Material: Galvanized steel and plastic housing
- Mounting: Uses a universal clamp for secure attachment
Documentation:
