
Belimo EFB120-S Actuator
The Belimo EFB120-S Actuator is a heavy-duty spring return damper actuator designed for reliable fail-safe operation in high-torque HVAC applications. Delivering 270 in-lb (30 Nm) of torque, this 120Vac unit provides consistent performance for large control dampers where positive close-off is critical. The "S" model includes two integrated auxiliary switches (SPDT) for end-position signaling or fan interlocking, increasing system automation accuracy. Engineered for longevity, the brushless DC motor is controlled by an application-specific integrated circuit (ASIC) that monitors and adapts the actuator’s state to provide overload protection throughout its 95-degree rotation.
This on/off fail-safe actuator is direct-coupled, allowing for seamless mounting to damper shafts up to 1.05 inches in diameter using its universal clamp. With a motor running time of 75 seconds and a spring return time of less than 20 seconds, it ensures rapid response during power loss. The rugged NEMA 2/IP54 housing and manual override crank make the EFB120-S a standard choice for contractors requiring industrial-grade damper control and HVAC automation.
Key Benefits- High Torque Capacity: Provides 270 in-lb of torque, capable of driving large dampers or being piggybacked for 540 in-lb loads.
- Integrated Auxiliary Switches: Features two SPDT auxiliary switches for position verification and system interlocking.
- Universal Compatibility: Fits damper shafts from 1/2" to 1.05" round, accommodating most standard jackshafts.
- Electronic Overload Protection: Ensures the motor will not burn out if stalled, automatically stopping at the end of rotation.
- True Fail-Safe Operation: Mechanical spring return ensures the damper returns to the desired safety position upon power interruption.
- What is the torque rating for the EFB120-S? It provides 270 in-lb [30 Nm] of torque.
- Can this actuator be used in parallel? Yes, multiple EFB120-S actuators can be wired in parallel; however, power consumption and transformer sizing must be verified.
- Does it require an electrical ground? No, these actuators are double-insulated and do not require a separate electrical ground connection to meet agency listings.
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: $904.47
-65%$904.47
$316.56Belimo EFB120-S Actuator
The Belimo EFB120-S Actuator is a heavy-duty spring return damper actuator designed for reliable fail-safe operation in high-torque HVAC applications. Delivering 270 in-lb (30 Nm) of torque, this 120Vac unit provides consistent performance for large control dampers where positive close-off is critical. The "S" model includes two integrated auxiliary switches (SPDT) for end-position signaling or fan interlocking, increasing system automation accuracy. Engineered for longevity, the brushless DC motor is controlled by an application-specific integrated circuit (ASIC) that monitors and adapts the actuator’s state to provide overload protection throughout its 95-degree rotation.
This on/off fail-safe actuator is direct-coupled, allowing for seamless mounting to damper shafts up to 1.05 inches in diameter using its universal clamp. With a motor running time of 75 seconds and a spring return time of less than 20 seconds, it ensures rapid response during power loss. The rugged NEMA 2/IP54 housing and manual override crank make the EFB120-S a standard choice for contractors requiring industrial-grade damper control and HVAC automation.
Key Benefits- High Torque Capacity: Provides 270 in-lb of torque, capable of driving large dampers or being piggybacked for 540 in-lb loads.
- Integrated Auxiliary Switches: Features two SPDT auxiliary switches for position verification and system interlocking.
- Universal Compatibility: Fits damper shafts from 1/2" to 1.05" round, accommodating most standard jackshafts.
- Electronic Overload Protection: Ensures the motor will not burn out if stalled, automatically stopping at the end of rotation.
- True Fail-Safe Operation: Mechanical spring return ensures the damper returns to the desired safety position upon power interruption.
- What is the torque rating for the EFB120-S? It provides 270 in-lb [30 Nm] of torque.
- Can this actuator be used in parallel? Yes, multiple EFB120-S actuators can be wired in parallel; however, power consumption and transformer sizing must be verified.
- Does it require an electrical ground? No, these actuators are double-insulated and do not require a separate electrical ground connection to meet agency listings.
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 EFB120-S Actuator is a heavy-duty spring return damper actuator designed for reliable fail-safe operation in high-torque HVAC applications. Delivering 270 in-lb (30 Nm) of torque, this 120Vac unit provides consistent performance for large control dampers where positive close-off is critical. The "S" model includes two integrated auxiliary switches (SPDT) for end-position signaling or fan interlocking, increasing system automation accuracy. Engineered for longevity, the brushless DC motor is controlled by an application-specific integrated circuit (ASIC) that monitors and adapts the actuator’s state to provide overload protection throughout its 95-degree rotation.
This on/off fail-safe actuator is direct-coupled, allowing for seamless mounting to damper shafts up to 1.05 inches in diameter using its universal clamp. With a motor running time of 75 seconds and a spring return time of less than 20 seconds, it ensures rapid response during power loss. The rugged NEMA 2/IP54 housing and manual override crank make the EFB120-S a standard choice for contractors requiring industrial-grade damper control and HVAC automation.
Key Benefits- High Torque Capacity: Provides 270 in-lb of torque, capable of driving large dampers or being piggybacked for 540 in-lb loads.
- Integrated Auxiliary Switches: Features two SPDT auxiliary switches for position verification and system interlocking.
- Universal Compatibility: Fits damper shafts from 1/2" to 1.05" round, accommodating most standard jackshafts.
- Electronic Overload Protection: Ensures the motor will not burn out if stalled, automatically stopping at the end of rotation.
- True Fail-Safe Operation: Mechanical spring return ensures the damper returns to the desired safety position upon power interruption.
- What is the torque rating for the EFB120-S? It provides 270 in-lb [30 Nm] of torque.
- Can this actuator be used in parallel? Yes, multiple EFB120-S actuators can be wired in parallel; however, power consumption and transformer sizing must be verified.
- Does it require an electrical ground? No, these actuators are double-insulated and do not require a separate electrical ground connection to meet agency listings.
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.












