
Belimo SF24A-MOD Actuator
The Belimo SF24A-MOD is a high-torque spring-return actuator designed for modulating control in demanding HVAC applications. Operating on a 24V AC/DC power supply, this unit provides 180 in-lb (20 Nm) of torque, making it suitable for larger air dampers and control valves that require a fail-safe position. Integrating Modbus RTU communication, it allows for seamless building automation system (BAS) integration and real-time feedback on actuator position and operational status. The brushless DC motor technology ensures precise control and long-term reliability without the maintenance overhead of traditional motors. Contractors will appreciate the NEMA 2 (IP54) enclosure rating and the MFT (Multi-Function Technology) capability, which permits field adjustment of control signals and running times. This SF-series HVAC actuator is engineered for rigorous duty cycles, providing consistent performance in both damper automation and hydronic system management where reliable spring-return fail-safe operation is critical for equipment protection.
Key Technical Benefits
- Digital Integration: Onboard Modbus RTU communication reduces wiring complexity and enables remote diagnostics.
- High Torque Output: Delivers 180 in-lb of torque to handle high-pressure dampering and heavy-duty valve assemblies.
- Fail-Safe Reliability: Mechanical spring-return ensures the system returns to a safe position during power loss.
- Precision Control: Utilizes 2-10 VDC or digital signals for accurate positioning and minimal hunting.
- Durable Construction: Built with a UL Type 2 enclosure to withstand typical mechanical room environments.
Common Questions
How do I address the Modbus registers for the SF24A-MOD?
The unit features a dedicated interface for setting the Modbus address (1-247) and communication parameters like baud rate and parity, typically configured via the Belimo Assistant App or a handheld ZTH service tool.
Can this actuator replace a standard analog SF24A?
Yes, provided the control system can output Modbus or the unit is configured for 2-10 VDC analog override. The physical footprint and mounting remain consistent with the standard SF series.
What is the typical runtime for the SF24A-MOD?
Standard motor runtime is 150 seconds for 90 degrees, while the spring-return fail-safe timing is less than 20 seconds, ensuring rapid closure upon power failure.
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: $545.99
-65%$545.99
$191.10Belimo SF24A-MOD Actuator
The Belimo SF24A-MOD is a high-torque spring-return actuator designed for modulating control in demanding HVAC applications. Operating on a 24V AC/DC power supply, this unit provides 180 in-lb (20 Nm) of torque, making it suitable for larger air dampers and control valves that require a fail-safe position. Integrating Modbus RTU communication, it allows for seamless building automation system (BAS) integration and real-time feedback on actuator position and operational status. The brushless DC motor technology ensures precise control and long-term reliability without the maintenance overhead of traditional motors. Contractors will appreciate the NEMA 2 (IP54) enclosure rating and the MFT (Multi-Function Technology) capability, which permits field adjustment of control signals and running times. This SF-series HVAC actuator is engineered for rigorous duty cycles, providing consistent performance in both damper automation and hydronic system management where reliable spring-return fail-safe operation is critical for equipment protection.
Key Technical Benefits
- Digital Integration: Onboard Modbus RTU communication reduces wiring complexity and enables remote diagnostics.
- High Torque Output: Delivers 180 in-lb of torque to handle high-pressure dampering and heavy-duty valve assemblies.
- Fail-Safe Reliability: Mechanical spring-return ensures the system returns to a safe position during power loss.
- Precision Control: Utilizes 2-10 VDC or digital signals for accurate positioning and minimal hunting.
- Durable Construction: Built with a UL Type 2 enclosure to withstand typical mechanical room environments.
Common Questions
How do I address the Modbus registers for the SF24A-MOD?
The unit features a dedicated interface for setting the Modbus address (1-247) and communication parameters like baud rate and parity, typically configured via the Belimo Assistant App or a handheld ZTH service tool.
Can this actuator replace a standard analog SF24A?
Yes, provided the control system can output Modbus or the unit is configured for 2-10 VDC analog override. The physical footprint and mounting remain consistent with the standard SF series.
What is the typical runtime for the SF24A-MOD?
Standard motor runtime is 150 seconds for 90 degrees, while the spring-return fail-safe timing is less than 20 seconds, ensuring rapid closure upon power failure.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Belimo SF24A-MOD is a high-torque spring-return actuator designed for modulating control in demanding HVAC applications. Operating on a 24V AC/DC power supply, this unit provides 180 in-lb (20 Nm) of torque, making it suitable for larger air dampers and control valves that require a fail-safe position. Integrating Modbus RTU communication, it allows for seamless building automation system (BAS) integration and real-time feedback on actuator position and operational status. The brushless DC motor technology ensures precise control and long-term reliability without the maintenance overhead of traditional motors. Contractors will appreciate the NEMA 2 (IP54) enclosure rating and the MFT (Multi-Function Technology) capability, which permits field adjustment of control signals and running times. This SF-series HVAC actuator is engineered for rigorous duty cycles, providing consistent performance in both damper automation and hydronic system management where reliable spring-return fail-safe operation is critical for equipment protection.
Key Technical Benefits
- Digital Integration: Onboard Modbus RTU communication reduces wiring complexity and enables remote diagnostics.
- High Torque Output: Delivers 180 in-lb of torque to handle high-pressure dampering and heavy-duty valve assemblies.
- Fail-Safe Reliability: Mechanical spring-return ensures the system returns to a safe position during power loss.
- Precision Control: Utilizes 2-10 VDC or digital signals for accurate positioning and minimal hunting.
- Durable Construction: Built with a UL Type 2 enclosure to withstand typical mechanical room environments.
Common Questions
How do I address the Modbus registers for the SF24A-MOD?
The unit features a dedicated interface for setting the Modbus address (1-247) and communication parameters like baud rate and parity, typically configured via the Belimo Assistant App or a handheld ZTH service tool.
Can this actuator replace a standard analog SF24A?
Yes, provided the control system can output Modbus or the unit is configured for 2-10 VDC analog override. The physical footprint and mounting remain consistent with the standard SF series.
What is the typical runtime for the SF24A-MOD?
Standard motor runtime is 150 seconds for 90 degrees, while the spring-return fail-safe timing is less than 20 seconds, ensuring rapid closure upon power failure.
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.












