Belimo NFB24-SR-S Actuator
The Belimo NFB24-SR-S is a high-performance spring return damper actuator engineered for reliable fail-safe operation in HVAC systems. Delivering 90 in-lb of torque, this proportional control actuator operates on a 2-10VDC control signal and is compatible with both 24VAC and 24VDC power supplies. Designed for demanding damper automation and valve linkage applications, it features a rugged NEMA 2 rated housing and integrated auxiliary switches for precise end-stop position feedback. The brushless DC motor technology ensures consistent timing and eliminates the risk of burnout due to stalling, making it a dependable choice for baselining building automation systems. This spring return actuator provides mechanical redundancy, ensuring the application returns to a safe position during power loss. Its universal clamp design accommodates standard shafts, facilitating straightforward installation for field replacements or new constructions requiring modulating actuator precision.
Key Benefits- Fail-Safe Security: Mechanical spring return ensures dampers or valves return to a predetermined safety position during power interruptions.
- Precise Signal Response: Utilizing a 2-10VDC modulating input provides granular control over airflow and fluid dynamics.
- Integrated Feedback: Two built-in SPDT auxiliary switches allow for seamless integration with controllers to confirm open/closed status.
- Overload Protection: Electronic stall sensing protects the motor across the entire rotation range without the need for limit switches.
- Simplified Mounting: The universal shaft clamp allows for quick attachment to round or square shafts, reducing labor time on the job site.
What is the purpose of the -S suffix on the NFB24-SR-S?
The -S indicates that this model includes two internal auxiliary switches, which are used to signal end-of-travel positions to your building management system or to interlock other equipment.
Can the direction of the spring return be adjusted?
Yes, the fail-safe direction is determined by the orientation of the actuator on the shaft. Mounting the actuator on one side or the other selects whether it springs open or springs closed upon loss of 24V power.
Will this actuator work with a 4-20mA control signal?
While the native input is 2-10VDC, it can be converted to accept a 4-20mA signal by installing a 500? resistor across the input terminals, though many modern controllers can be scaled to provide the direct voltage signal required.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $471.23
-65%$471.23
$164.93Belimo NFB24-SR-S Actuator
The Belimo NFB24-SR-S is a high-performance spring return damper actuator engineered for reliable fail-safe operation in HVAC systems. Delivering 90 in-lb of torque, this proportional control actuator operates on a 2-10VDC control signal and is compatible with both 24VAC and 24VDC power supplies. Designed for demanding damper automation and valve linkage applications, it features a rugged NEMA 2 rated housing and integrated auxiliary switches for precise end-stop position feedback. The brushless DC motor technology ensures consistent timing and eliminates the risk of burnout due to stalling, making it a dependable choice for baselining building automation systems. This spring return actuator provides mechanical redundancy, ensuring the application returns to a safe position during power loss. Its universal clamp design accommodates standard shafts, facilitating straightforward installation for field replacements or new constructions requiring modulating actuator precision.
Key Benefits- Fail-Safe Security: Mechanical spring return ensures dampers or valves return to a predetermined safety position during power interruptions.
- Precise Signal Response: Utilizing a 2-10VDC modulating input provides granular control over airflow and fluid dynamics.
- Integrated Feedback: Two built-in SPDT auxiliary switches allow for seamless integration with controllers to confirm open/closed status.
- Overload Protection: Electronic stall sensing protects the motor across the entire rotation range without the need for limit switches.
- Simplified Mounting: The universal shaft clamp allows for quick attachment to round or square shafts, reducing labor time on the job site.
What is the purpose of the -S suffix on the NFB24-SR-S?
The -S indicates that this model includes two internal auxiliary switches, which are used to signal end-of-travel positions to your building management system or to interlock other equipment.
Can the direction of the spring return be adjusted?
Yes, the fail-safe direction is determined by the orientation of the actuator on the shaft. Mounting the actuator on one side or the other selects whether it springs open or springs closed upon loss of 24V power.
Will this actuator work with a 4-20mA control signal?
While the native input is 2-10VDC, it can be converted to accept a 4-20mA signal by installing a 500? resistor across the input terminals, though many modern controllers can be scaled to provide the direct voltage signal required.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Belimo NFB24-SR-S is a high-performance spring return damper actuator engineered for reliable fail-safe operation in HVAC systems. Delivering 90 in-lb of torque, this proportional control actuator operates on a 2-10VDC control signal and is compatible with both 24VAC and 24VDC power supplies. Designed for demanding damper automation and valve linkage applications, it features a rugged NEMA 2 rated housing and integrated auxiliary switches for precise end-stop position feedback. The brushless DC motor technology ensures consistent timing and eliminates the risk of burnout due to stalling, making it a dependable choice for baselining building automation systems. This spring return actuator provides mechanical redundancy, ensuring the application returns to a safe position during power loss. Its universal clamp design accommodates standard shafts, facilitating straightforward installation for field replacements or new constructions requiring modulating actuator precision.
Key Benefits- Fail-Safe Security: Mechanical spring return ensures dampers or valves return to a predetermined safety position during power interruptions.
- Precise Signal Response: Utilizing a 2-10VDC modulating input provides granular control over airflow and fluid dynamics.
- Integrated Feedback: Two built-in SPDT auxiliary switches allow for seamless integration with controllers to confirm open/closed status.
- Overload Protection: Electronic stall sensing protects the motor across the entire rotation range without the need for limit switches.
- Simplified Mounting: The universal shaft clamp allows for quick attachment to round or square shafts, reducing labor time on the job site.
What is the purpose of the -S suffix on the NFB24-SR-S?
The -S indicates that this model includes two internal auxiliary switches, which are used to signal end-of-travel positions to your building management system or to interlock other equipment.
Can the direction of the spring return be adjusted?
Yes, the fail-safe direction is determined by the orientation of the actuator on the shaft. Mounting the actuator on one side or the other selects whether it springs open or springs closed upon loss of 24V power.
Will this actuator work with a 4-20mA control signal?
While the native input is 2-10VDC, it can be converted to accept a 4-20mA signal by installing a 500? resistor across the input terminals, though many modern controllers can be scaled to provide the direct voltage signal required.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
