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Belimo AF120-S Fail-Safe Spring Return Damper Actuator 133 in-lb 120 VAC w/ Aux Switches
- Regular price
- $1,595.00
- Sale price
- $1,595.00
- Regular price
-
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Product Description P/N: AF120-S
Description
The Belimo AF120-S is a heavy-duty, spring-return damper actuator designed to regulate airflow and provide fail-safe operation in commercial HVAC systems. This 120 VAC mechanical drive unit delivers 133 in-lb of torque to reliably position dampers, utilizing built-in auxiliary switches to signal end-point status. By automatically returning to a closed or open position during power losses, the actuator prevents uncontrolled air circulation and protects facility infrastructure.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC Parts |
| Part Number | AF120-S |
| Subcategory | Damper Actuators |
| Actuator Type | Spring Return (Fail-Safe) |
| Torque Output | 133 in-lb (15 Nm) |
| Power Supply | 120 VAC |
| Power Frequency | 50/60 Hz |
| Control Signal | On/Off |
| Auxiliary Switches | 2 x SPDT (Built-In) |
| Power Consumption (Running) | 7.5 Watts |
| Enclosure Rating | NEMA 2 / IP54 |
| Shaft Diameter Compatibility | 3/8 to 1.05 Inches |
| Weight | 6.9 lbs |
Information About AF120-S
The AF120-S is a direct-coupled electromechanical device belonging to the robust AF series, engineered with a rugged NEMA 2 housing to shield internal components from dust and typical mechanical room moisture. It features a high-tension internal spring mechanism that actively engages when electrical power is interrupted, instantly driving the attached damper to a predetermined safe position. Facility managers and HVAC technicians utilize this unit to control intake louvers and exhaust dampers where fire, freeze, or smoke protection protocols mandate immediate mechanical closure during emergencies. The actuator mounts directly onto standard round or square damper shafts utilizing a universal V-bolt clamp, which eliminates the need for complex external linkages.
Key Features:
● Spring-Return Fail-Safe: Automatically drives the damper to a secure, predetermined closed or open position immediately upon electrical power loss.
● High Torque Output: Generates 133 in-lb of rotational force to reliably manipulate large commercial dampers under active pressure.
● Integrated Auxiliary Switches: Includes two built-in SPDT switches to provide remote position signaling and facilitate advanced building automation logic.
● 120 VAC Operation: Runs efficiently on standard 120-volt alternating current power, allowing for direct integration into commercial building electrical grids.
● Direct-Coupled Mounting: Attaches straight to standard damper shafts using a standardized V-bolt clamp, minimizing installation time and required hardware.
● Brushless DC Motor: Reduces internal friction and mechanical wear during continuous duty cycles to extend the operational lifespan of the actuator.
● NEMA 2 Enclosure: Features a durable outer housing that protects sensitive internal electronics from falling dirt and light condensation.
The AF120-S delivers the reliability and precision required for strict airflow regulation and emergency fail-safe protection in commercial ventilation networks.
Description
The Belimo AF120-S is a heavy-duty, spring-return damper actuator designed to regulate airflow and provide fail-safe operation in commercial HVAC systems. This 120 VAC mechanical drive unit delivers 133 in-lb of torque to reliably position dampers, utilizing built-in auxiliary switches to signal end-point status. By automatically returning to a closed or open position during power losses, the actuator prevents uncontrolled air circulation and protects facility infrastructure.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC Parts |
| Part Number | AF120-S |
| Subcategory | Damper Actuators |
| Actuator Type | Spring Return (Fail-Safe) |
| Torque Output | 133 in-lb (15 Nm) |
| Power Supply | 120 VAC |
| Power Frequency | 50/60 Hz |
| Control Signal | On/Off |
| Auxiliary Switches | 2 x SPDT (Built-In) |
| Power Consumption (Running) | 7.5 Watts |
| Enclosure Rating | NEMA 2 / IP54 |
| Shaft Diameter Compatibility | 3/8 to 1.05 Inches |
| Weight | 6.9 lbs |
Information About AF120-S
The AF120-S is a direct-coupled electromechanical device belonging to the robust AF series, engineered with a rugged NEMA 2 housing to shield internal components from dust and typical mechanical room moisture. It features a high-tension internal spring mechanism that actively engages when electrical power is interrupted, instantly driving the attached damper to a predetermined safe position. Facility managers and HVAC technicians utilize this unit to control intake louvers and exhaust dampers where fire, freeze, or smoke protection protocols mandate immediate mechanical closure during emergencies. The actuator mounts directly onto standard round or square damper shafts utilizing a universal V-bolt clamp, which eliminates the need for complex external linkages.
Key Features:
● Spring-Return Fail-Safe: Automatically drives the damper to a secure, predetermined closed or open position immediately upon electrical power loss.
● High Torque Output: Generates 133 in-lb of rotational force to reliably manipulate large commercial dampers under active pressure.
● Integrated Auxiliary Switches: Includes two built-in SPDT switches to provide remote position signaling and facilitate advanced building automation logic.
● 120 VAC Operation: Runs efficiently on standard 120-volt alternating current power, allowing for direct integration into commercial building electrical grids.
● Direct-Coupled Mounting: Attaches straight to standard damper shafts using a standardized V-bolt clamp, minimizing installation time and required hardware.
● Brushless DC Motor: Reduces internal friction and mechanical wear during continuous duty cycles to extend the operational lifespan of the actuator.
● NEMA 2 Enclosure: Features a durable outer housing that protects sensitive internal electronics from falling dirt and light condensation.
The AF120-S delivers the reliability and precision required for strict airflow regulation and emergency fail-safe protection in commercial ventilation networks.
