Spring Return Damper Actuator 24VAC/DC MPN:NFB24-SR

Designed for fail safe, modulating damper control in HVAC systems, this BELIMO spring return damper actuator (24VAC/DC) provides true spring return operation for reliable fail-safe application and positive close-off on air tight dampers. The spring return system can provide consistent torque to the damper with, and without, power applied to the actuator. Model can provide up to 95° of rotation and is provided with a graduated position indicator displaying 0° to 95°. Model uses a brushless DC motor controlled by an Application Specific Integrated Circuit (ASIC) and a microprocessor. The microprocessor device provides data to the ASIC in order to provide a constant rotation rate and to determine the actuator’s exact fail-safe position. The ASIC controls and monitors the DC motor’s rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition. The actuator may be stalled anywhere in its normal rotation without the need for mechanical end switches.

Technical Specifications

• Item Spring Return Damper Actuator, 24VAC/DC
• Spring Return Yes
• Shaft Type 1/2 in to 1-3/64 in Round or 13/32 in to 1-3/64 in Square
• Torque 90 in-lb
• Stroke Deg. 0 to 95
• Height 9 11/16 in
• Width 3 5/32 in
• Depth 3 27/64 in
• Signal Type Proportional
• Motor Direction CW or CCW
• Ambient Temp. Range -22 Degrees to 122 Degrees F
• Timing 95 sec
• Voltage 24V AC/DC
• Power Rating 3.5W
• Includes Mounting Hardware

Manufacturer Details

• Manufacturer: Belimo
• Condensed Mfg Number: NFB24SR
• MPN: NFB24-SR

Label Details

• Hazardous Material: N
• Green Material Flag: N
• Country of Origin: US
• CA Prop 65 Wht Label: N

Classification Details

• Harmonization Code: 8501104040
• GDS Category Name: Electric Actuators
• GDS Family Name: HVAC Controls and Thermostats
• GDS Segment Name: HVAC and Refrigeration
• UNSPSC: 31251501
• UNSPSC Class ID: 15
• UNSPSC Commodity Name: Actuators
• UNSPSC Commodity ID: 01
• UNSPSC Commodity Name: Electric actuators
• UNSPSC Family ID: 25
• UNSPSC Family Name: Pneumatic and hydraulic and electric control systems
• UNSPSC Segment ID: 31
• UNSPSC Segment Name: Manufacturing Components and Supplies

Shipping Details

• Not For Sale In: HI AK PR