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Belimo AFB24-S 24V Spring-Return Damper Actuator, 180 in-lb, On/Off Control With 2 SPDT Switches
- Regular price
- $499.00
- Sale price
- $499.00
- Regular price
-
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Product Description P/N: AFB24-S
Description
The Belimo AFB24-S is a spring-return damper actuator designed for on/off airflow control in commercial HVAC systems. Operating on 24 VAC/VDC, it delivers 180 in-lb of torque and includes two SPDT auxiliary switches for position signaling and equipment interlocks. Its mechanical spring returns the damper to the selected fail-safe position when power is removed.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC & Building Automation |
| Part Number | AFB24-S |
| Subcategory | Damper Actuators |
| Series / Actuator Type | AFB Series; rotary; spring-return fail-safe |
| Control Type | On/Off |
| Nominal Supply Voltage | 24 VAC/VDC; 50/60 Hz with AC power |
| Operating Voltage Range | 19.2–28.8 VAC / 21.6–28.8 VDC |
| Power Consumption / Supply Sizing | 5 W running; 2.5 W holding; 7.5 VA supply sizing |
| Rated Torque | 180 in-lb |
| Auxiliary Switches | 2 SPDT; one fixed and one adjustable switching point |
| Auxiliary Contact Rating | 1 mA–3 A; 0.5 A inductive; 5 VDC–250 VAC |
| Rotation / Direction | Maximum 95°; mechanical stop adjustable from 35–95°; CW/CCW selected by mounting |
| Motor Running Time | 75 seconds per 90° |
| Spring-Return Running Time | Under 20 seconds at −4–122°F; under 60 seconds at −22°F |
| Manual Override / Indication | Supplied 5 mm hex crank, designated 3/16-inch Allen; mechanical position indicator |
| Mounting / Electrical Connection | Universal clamp for compatible shafts up to 1.05 inches; two approximately 3.3 ft, 18 AWG appliance cables with 1/2-inch NPT conduit connectors |
| Enclosure / Ambient Conditions | NEMA 2; UL Enclosure Type 2; −22–122°F; maximum 95% RH, non-condensing |
| Weight | 5.6 lb |
Information About AFB24-S
The AFB24-S is part of Belimo’s AFB Series of direct-coupled electric damper actuators. Its mounting orientation determines clockwise or counterclockwise motor and spring-return operation. Electronic overload protection operates throughout the actuator’s travel, allowing it to stop at the damper end position without separate mechanical limit switches. A supplied manual crank and graduated position indicator support adjustment, while the auxiliary contacts provide switching functions for associated HVAC equipment.
Key Features:
- On/Off Operation: Provides two-position damper control through an external switching contact.
- Rated Torque: Delivers 180 in-lb for dampers sized according to the damper manufacturer’s requirements.
- Spring-Return Function: Moves the damper to its selected fail-safe position following power loss.
- Dual Power Compatibility: Accepts either 24 VAC or 24 VDC power.
- Auxiliary Contacts: Includes two SPDT switches for position signaling, interlocks, or fan-start commands.
- Adjustable Switching: Provides one fixed auxiliary switching point and one adjustable switching point.
- Reversible Mounting: Supports clockwise or counterclockwise operation through installation orientation.
- Adjustable Travel: Offers up to 95° rotation with a mechanical stop adjustable between 35° and 95°.
- Manual Positioning: Includes a 5 mm hex crank for manual override.
- Electronic Protection: Protects the drive against overload throughout its operating rotation.
- Direct Shaft Coupling: Mounts onto compatible damper shafts using a universal clamp.
The AFB24-S delivers the reliability and precision required for two-position damper control, equipment interlocking, and fail-safe airflow management.
Description
The Belimo AFB24-S is a spring-return damper actuator designed for on/off airflow control in commercial HVAC systems. Operating on 24 VAC/VDC, it delivers 180 in-lb of torque and includes two SPDT auxiliary switches for position signaling and equipment interlocks. Its mechanical spring returns the damper to the selected fail-safe position when power is removed.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC & Building Automation |
| Part Number | AFB24-S |
| Subcategory | Damper Actuators |
| Series / Actuator Type | AFB Series; rotary; spring-return fail-safe |
| Control Type | On/Off |
| Nominal Supply Voltage | 24 VAC/VDC; 50/60 Hz with AC power |
| Operating Voltage Range | 19.2–28.8 VAC / 21.6–28.8 VDC |
| Power Consumption / Supply Sizing | 5 W running; 2.5 W holding; 7.5 VA supply sizing |
| Rated Torque | 180 in-lb |
| Auxiliary Switches | 2 SPDT; one fixed and one adjustable switching point |
| Auxiliary Contact Rating | 1 mA–3 A; 0.5 A inductive; 5 VDC–250 VAC |
| Rotation / Direction | Maximum 95°; mechanical stop adjustable from 35–95°; CW/CCW selected by mounting |
| Motor Running Time | 75 seconds per 90° |
| Spring-Return Running Time | Under 20 seconds at −4–122°F; under 60 seconds at −22°F |
| Manual Override / Indication | Supplied 5 mm hex crank, designated 3/16-inch Allen; mechanical position indicator |
| Mounting / Electrical Connection | Universal clamp for compatible shafts up to 1.05 inches; two approximately 3.3 ft, 18 AWG appliance cables with 1/2-inch NPT conduit connectors |
| Enclosure / Ambient Conditions | NEMA 2; UL Enclosure Type 2; −22–122°F; maximum 95% RH, non-condensing |
| Weight | 5.6 lb |
Information About AFB24-S
The AFB24-S is part of Belimo’s AFB Series of direct-coupled electric damper actuators. Its mounting orientation determines clockwise or counterclockwise motor and spring-return operation. Electronic overload protection operates throughout the actuator’s travel, allowing it to stop at the damper end position without separate mechanical limit switches. A supplied manual crank and graduated position indicator support adjustment, while the auxiliary contacts provide switching functions for associated HVAC equipment.
Key Features:
- On/Off Operation: Provides two-position damper control through an external switching contact.
- Rated Torque: Delivers 180 in-lb for dampers sized according to the damper manufacturer’s requirements.
- Spring-Return Function: Moves the damper to its selected fail-safe position following power loss.
- Dual Power Compatibility: Accepts either 24 VAC or 24 VDC power.
- Auxiliary Contacts: Includes two SPDT switches for position signaling, interlocks, or fan-start commands.
- Adjustable Switching: Provides one fixed auxiliary switching point and one adjustable switching point.
- Reversible Mounting: Supports clockwise or counterclockwise operation through installation orientation.
- Adjustable Travel: Offers up to 95° rotation with a mechanical stop adjustable between 35° and 95°.
- Manual Positioning: Includes a 5 mm hex crank for manual override.
- Electronic Protection: Protects the drive against overload throughout its operating rotation.
- Direct Shaft Coupling: Mounts onto compatible damper shafts using a universal clamp.
The AFB24-S delivers the reliability and precision required for two-position damper control, equipment interlocking, and fail-safe airflow management.
