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Belimo NFB24-S-N4 Spring Return Damper Actuator 90 In-Lb
- Regular price
- $789.00
- Sale price
- $789.00
- Regular price
-
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Product Description P/N: NFB24-S-N4
Description
The Belimo NFB24-S-N4 Damper Actuator is a spring return HVAC actuator designed for reliable air damper control in commercial and industrial ventilation systems. Operating on 24 V power, the actuator delivers 90 in-lb torque with on/off control functionality and NEMA 4 enclosure protection for demanding environmental conditions. Its reversible mounting configuration and rugged housing design support dependable airflow management in indoor and outdoor HVAC applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC Controls |
| Part Number | NFB24-S-N4 |
| Subcategory | Damper Actuators |
| Product Type | Damper Actuator |
| Control Type | On/Off |
| Spring Return | Yes |
| Torque Output | 90 In-Lb |
| Voltage Rating | 24 V |
| Enclosure Rating | NEMA 4 |
| Application | Air Dampers |
| Motor Type | Brushless DC |
| Rotation Angle | 95° |
| Spring Return Time | Less Than 60 Seconds |
| Auxiliary Switches | 2 SPDT, 3A @ 250V |
| Manual Override | Manual Crank |
| Input Impedance | 100 kΩ @ 0/2-10 VDC; 500 Ω @ 4-20 mA |
| Operating Temperature | -22°F to 122°F (-30°C to 50°C) |
| Operating Humidity | 5 to 95% RH |
| Approvals | cULus, CE, RoHS |
| Conduit Connection | Four Knockouts for Waterproof Fittings |
| Life Expectancy | 60,000 Cycles / 500,000 Repositions |
| Noise Level | Less Than 62 dB |
| Weight | 6 lb |
Information About NFB24-S-N4
The NFB24-S-N4 is a heavy-duty damper actuator manufactured by Belimo for controlling air dampers in HVAC and building automation systems. Designed with spring return operation, the actuator automatically returns dampers to their fail-safe position within 60 seconds during power interruption or emergency shutdown conditions. The actuator incorporates a brushless DC motor, manual override crank, and dual SPDT auxiliary switches for enhanced operational flexibility and monitoring capability. Built with NEMA 4 environmental protection, waterproof conduit compatibility, and cULus, CE, and RoHS approvals, the unit is suitable for commercial and industrial installations requiring durable actuator performance.
Key Features:
- 90 In-Lb Torque Output: Provides reliable operation for commercial HVAC air dampers.
- Spring Return Functionality: Automatically returns dampers to the fail-safe position during power loss.
- NEMA 4 Enclosure Protection: Supports operation in demanding indoor and outdoor environments.
- On/Off Control Operation: Enables dependable two-position damper control.
- Brushless DC Motor: Delivers efficient and long-life actuator performance.
- Manual Override Crank: Allows manual actuator positioning during maintenance or setup.
- Dual SPDT Auxiliary Switches: Supports equipment monitoring and control integration.
- Reversible CW/CCW Mounting: Enables flexible actuator installation orientation.
The NFB24-S-N4 delivers the reliability and precision required for commercial and industrial HVAC damper control applications.
Description
The Belimo NFB24-S-N4 Damper Actuator is a spring return HVAC actuator designed for reliable air damper control in commercial and industrial ventilation systems. Operating on 24 V power, the actuator delivers 90 in-lb torque with on/off control functionality and NEMA 4 enclosure protection for demanding environmental conditions. Its reversible mounting configuration and rugged housing design support dependable airflow management in indoor and outdoor HVAC applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC Controls |
| Part Number | NFB24-S-N4 |
| Subcategory | Damper Actuators |
| Product Type | Damper Actuator |
| Control Type | On/Off |
| Spring Return | Yes |
| Torque Output | 90 In-Lb |
| Voltage Rating | 24 V |
| Enclosure Rating | NEMA 4 |
| Application | Air Dampers |
| Motor Type | Brushless DC |
| Rotation Angle | 95° |
| Spring Return Time | Less Than 60 Seconds |
| Auxiliary Switches | 2 SPDT, 3A @ 250V |
| Manual Override | Manual Crank |
| Input Impedance | 100 kΩ @ 0/2-10 VDC; 500 Ω @ 4-20 mA |
| Operating Temperature | -22°F to 122°F (-30°C to 50°C) |
| Operating Humidity | 5 to 95% RH |
| Approvals | cULus, CE, RoHS |
| Conduit Connection | Four Knockouts for Waterproof Fittings |
| Life Expectancy | 60,000 Cycles / 500,000 Repositions |
| Noise Level | Less Than 62 dB |
| Weight | 6 lb |
Information About NFB24-S-N4
The NFB24-S-N4 is a heavy-duty damper actuator manufactured by Belimo for controlling air dampers in HVAC and building automation systems. Designed with spring return operation, the actuator automatically returns dampers to their fail-safe position within 60 seconds during power interruption or emergency shutdown conditions. The actuator incorporates a brushless DC motor, manual override crank, and dual SPDT auxiliary switches for enhanced operational flexibility and monitoring capability. Built with NEMA 4 environmental protection, waterproof conduit compatibility, and cULus, CE, and RoHS approvals, the unit is suitable for commercial and industrial installations requiring durable actuator performance.
Key Features:
- 90 In-Lb Torque Output: Provides reliable operation for commercial HVAC air dampers.
- Spring Return Functionality: Automatically returns dampers to the fail-safe position during power loss.
- NEMA 4 Enclosure Protection: Supports operation in demanding indoor and outdoor environments.
- On/Off Control Operation: Enables dependable two-position damper control.
- Brushless DC Motor: Delivers efficient and long-life actuator performance.
- Manual Override Crank: Allows manual actuator positioning during maintenance or setup.
- Dual SPDT Auxiliary Switches: Supports equipment monitoring and control integration.
- Reversible CW/CCW Mounting: Enables flexible actuator installation orientation.
The NFB24-S-N4 delivers the reliability and precision required for commercial and industrial HVAC damper control applications.
