Product Overview:
The BELIMO NFB24-S is a high-performance, compact spring return damper actuator designed for reliable and precise control of air dampers in HVAC systems. Engineered for fail-safe operation, this actuator ensures that the damper returns to a pre-defined position (open or closed) upon power interruption, making it ideal for critical ventilation, zone control, and safety applications. Operating on a versatile 24 VAC/DC power supply, the NFB24-S provides robust 95 in-lb (10 Nm) torque, suitable for controlling dampers up to approximately 22 sq ft (2.0 m²). Its integrated auxiliary switch offers valuable feedback or control capabilities for other system components, enhancing overall building automation and energy management. With direct coupling for easy installation and Belimo's renowned quality, the NFB24-S delivers exceptional durability, energy efficiency, and quiet operation for commercial and industrial HVAC environments.
Technical Specifications:
- Part Number: NFB24-S
- Alternate Part Number: NFB24S
- Power Supply: 24 VAC/DC, 50/60 Hz
- Power Consumption:
- Running: 2.5 W
- Holding: 1.0 W
- Torque: 95 in-lb (10 Nm)
- Control Type: On/Off (2-position)
- Rotation Angle: 95°
- Running Time:
- Motor: 75-150 seconds
- Spring: 20 seconds
- Auxiliary Switch: 1 x SPDT, 7A resistive @ 250 VAC
- Shaft Diameter Range: 1/4" to 1/2" round, 1/4" to 3/8" square
- Enclosure Rating: NEMA 2 / IP42
- Ambient Operating Temperature: -22°F to 122°F (-30°C to 50°C)
- Ambient Humidity: 5 to 95% RH, non-condensing
- Weight: 2.5 lbs (1.1 kg)
- Certifications: UL, cUL Listed
BELIMO NFB24-S
1-Year Warranty on Purchased Parts
All products sold by Roc Industrial LLC are covered by a limited warranty for a period of one year from the date of purchase, unless otherwise stated. This warranty covers defects in material and workmanship and does not cover damage caused by misuse, abuse, neglect, or unauthorized repair. Click Here to learn more.
Return and Refund Policy
Returns are accepted within 30 days of purchase for a full refund or exchange. Customer is responsible for return shipping costs.Quick & Convenient Shipping Solutions
Ensuring rapid shipping, all domestic orders are processed within 1 business day with free standard delivery and optional overnight shipping available; international orders are efficiently handled with competitive shipping costs, though customs and taxes are the customer's responsibility. For specific shipping needs or assistance, feel free to contact us.
Repair Your Equipment
Get your equipment back up and running fast with our reliable repair services. 2-Year warranty included. Click Here to start.
Out of Stock? Don't Worry!
Our inventory is always evolving and updating. If the quantity of the item you're interested in is showing as zero, please don't hesitate to contact us. We may have new stock on the way or alternative solutions to meet your needs. Reach out to us for the most current availability and we'll do our best to accommodate your requirements.
