The Belimo LMB24-3-T is a compact, non-spring return damper actuator designed for controlling dampers in commercial HVAC systems. Operating on 24V AC/DC, it provides reliable on/off and floating point control, making it ideal for applications requiring precise damper positioning without the need for spring return functionality.
Technical Specifications
- Model: LMB24-3-T
- Torque: 45 in-lb (5 Nm)
- Control Type: On/Off, Floating Point
- Power Supply: 24V AC/DC (19.2–28.8V AC / 21.6–28.8V DC)
- Power Consumption:
- Running: 1.5 W
- Holding: 0.2 W
- Transformer Sizing: 2.5 VA
- Running Time: 95 seconds (for 90° rotation)
- Angle of Rotation: Max. 95°, adjustable with mechanical stop
- Direction of Rotation: Selectable via switch (0/1)
- Manual Override: External push button
- Position Indication: Mechanical
- Electrical Connection: Screw terminal (for 26 to 14 GA wire)
- Protection Class: IP20 / NEMA 1
- Ambient Temperature Range: -22°F to +122°F (-30°C to +50°C)
- Ambient Humidity: Max. 95% RH, non-condensing
- Weight: 1.4 lb (0.65 kg)
- Housing Material: UL94-5VA
- Certifications: cULus listed per UL60730-1A/-2-14, CE compliant
Key Features
- Direct-coupled actuator for damper shafts ranging from 1/4″ to 5/8″ diameter
- Electronic overload protection throughout the entire rotation range
- Maintenance-free design with brushless DC motor technology
- Visual position indicator for easy status verification
- Manual override capability for emergency operation
- Suitable for use in air plenums per UL 2043
Applications
- Variable Air Volume (VAV) systems
- Air handling units
- Ventilation and air distribution systems
- Zoning applications in commercial HVAC
Accessories (Sold Separately)
- Auxiliary Switches:
- S1A: Single SPDT switch
- S2A: Dual SPDT switches
- Feedback Potentiometers:
- P1000A: 1 kΩ
- P140A: 140 Ω
- P10000A: 10 kΩ
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance.