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Belimo LMB24-3 24V Non-Spring-Return Damper Actuator, 45 in-lb, On/Off and Floating-Point Control
- Regular price
- $225.00
- Sale price
- $225.00
- Regular price
-
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Product Description P/N: LMB24-3
Description
The Belimo LMB24-3 is a non-spring-return rotary damper actuator designed for on/off and floating-point control in commercial HVAC systems. Operating on 24 VAC/VDC, it delivers 45 in-lb of torque with a running time of 95 seconds per 90°. Its direct shaft mounting and manual gear release support installation and adjustment of ventilation dampers.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC & Building Automation |
| Part Number | LMB24-3 |
| Subcategory | Damper Actuators |
| Series / Actuator Type | LMB Series; rotary; non-spring return; non-fail-safe |
| Control Type | On/Off and floating-point, three-point control |
| Nominal Supply Voltage | 24 VAC/VDC |
| Supply Frequency / Voltage Range | 50/60 Hz with AC power; 19.2–28.8 VAC / 21.6–28.8 VDC |
| Power Consumption / Supply Sizing | 1.5 W running; 0.2 W holding; 2 VA supply sizing |
| Rated Torque | 45 in-lb |
| Angle of Rotation | Maximum 95°; adjustable mechanical end stop |
| Motor Running Time | 95 seconds per 90°; constant within rated load |
| Direction of Rotation | Selectable with 0/1 switch |
| Manual Override / Position Indication | External gear-release push button; mechanical visual indicator |
| Shaft Compatibility | 1/4–5/8-inch round shafts; up to 3/4 inch with accessory clamp |
| Electrical Connection | 18 AWG plenum cable with 1/2-inch NPT conduit connector |
| Overload Protection | Electronic throughout 0–95° rotation |
| Enclosure / Ambient Conditions | NEMA 2; UL Enclosure Type 2; −22–122°F; maximum 95% RH, non-condensing |
| Weight | 1.2 lb |
Information About LMB24-3
The LMB24-3 is part of Belimo’s LMB Series of electric actuators for HVAC airflow control. Its sensorless brushless DC motor uses electronic rotation monitoring to protect the drive during overload or stalled conditions. A universal clamp accommodates compatible round damper shafts from 1/4 inch to 5/8 inch, with an accessory clamp available for shafts up to 3/4 inch. The actuator automatically stops at the damper or actuator end position and reduces power consumption while holding position.
Key Features:
- Dual Control Modes: Supports on/off switching and floating-point, three-point positioning.
- Rated Torque: Provides 45 in-lb for operating appropriately sized HVAC dampers.
- AC/DC Compatibility: Accepts either 24 VAC or 24 VDC power.
- Direct Shaft Mounting: Attaches to compatible damper shafts using a universal clamp.
- Reversible Direction: Includes a 0/1 switch for selecting the motor’s direction of rotation.
- Manual Gear Release: Uses an external push button to disengage the drive for manual adjustment.
- Adjustable Rotation: Provides up to 95° of travel with a mechanical end stop.
- Consistent Travel Time: Maintains a running time of 95 seconds per 90°, independent of load within its rating.
- Electronic Overload Protection: Protects the actuator throughout its operating rotation.
- Visual Position Indicator: Allows local inspection of actuator position.
- Low Holding Power: Consumes 0.2 W while maintaining position.
The LMB24-3 delivers the reliability and precision required for two-position and floating-point damper control in commercial ventilation systems.
Description
The Belimo LMB24-3 is a non-spring-return rotary damper actuator designed for on/off and floating-point control in commercial HVAC systems. Operating on 24 VAC/VDC, it delivers 45 in-lb of torque with a running time of 95 seconds per 90°. Its direct shaft mounting and manual gear release support installation and adjustment of ventilation dampers.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC & Building Automation |
| Part Number | LMB24-3 |
| Subcategory | Damper Actuators |
| Series / Actuator Type | LMB Series; rotary; non-spring return; non-fail-safe |
| Control Type | On/Off and floating-point, three-point control |
| Nominal Supply Voltage | 24 VAC/VDC |
| Supply Frequency / Voltage Range | 50/60 Hz with AC power; 19.2–28.8 VAC / 21.6–28.8 VDC |
| Power Consumption / Supply Sizing | 1.5 W running; 0.2 W holding; 2 VA supply sizing |
| Rated Torque | 45 in-lb |
| Angle of Rotation | Maximum 95°; adjustable mechanical end stop |
| Motor Running Time | 95 seconds per 90°; constant within rated load |
| Direction of Rotation | Selectable with 0/1 switch |
| Manual Override / Position Indication | External gear-release push button; mechanical visual indicator |
| Shaft Compatibility | 1/4–5/8-inch round shafts; up to 3/4 inch with accessory clamp |
| Electrical Connection | 18 AWG plenum cable with 1/2-inch NPT conduit connector |
| Overload Protection | Electronic throughout 0–95° rotation |
| Enclosure / Ambient Conditions | NEMA 2; UL Enclosure Type 2; −22–122°F; maximum 95% RH, non-condensing |
| Weight | 1.2 lb |
Information About LMB24-3
The LMB24-3 is part of Belimo’s LMB Series of electric actuators for HVAC airflow control. Its sensorless brushless DC motor uses electronic rotation monitoring to protect the drive during overload or stalled conditions. A universal clamp accommodates compatible round damper shafts from 1/4 inch to 5/8 inch, with an accessory clamp available for shafts up to 3/4 inch. The actuator automatically stops at the damper or actuator end position and reduces power consumption while holding position.
Key Features:
- Dual Control Modes: Supports on/off switching and floating-point, three-point positioning.
- Rated Torque: Provides 45 in-lb for operating appropriately sized HVAC dampers.
- AC/DC Compatibility: Accepts either 24 VAC or 24 VDC power.
- Direct Shaft Mounting: Attaches to compatible damper shafts using a universal clamp.
- Reversible Direction: Includes a 0/1 switch for selecting the motor’s direction of rotation.
- Manual Gear Release: Uses an external push button to disengage the drive for manual adjustment.
- Adjustable Rotation: Provides up to 95° of travel with a mechanical end stop.
- Consistent Travel Time: Maintains a running time of 95 seconds per 90°, independent of load within its rating.
- Electronic Overload Protection: Protects the actuator throughout its operating rotation.
- Visual Position Indicator: Allows local inspection of actuator position.
- Low Holding Power: Consumes 0.2 W while maintaining position.
The LMB24-3 delivers the reliability and precision required for two-position and floating-point damper control in commercial ventilation systems.
