Description
The Belimo LF24-US Damper Actuator is a spring return HVAC actuator engineered for reliable on/off damper control in commercial ventilation and building automation systems. Operating on 24V AC/DC power, the actuator delivers 35 inch-lb torque with reversible CW/CCW rotation and a 95-degree stroke range for flexible installation.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
HVAC Controls |
| Part Number |
LF24-US |
| Subcategory |
Damper Actuators |
| Product Type |
Damper Actuator |
| Torque Output |
35 Inch-lb (4 Nm) |
| Input Voltage |
24V AC/DC |
| Signal Type |
On/Off |
| Fail Safe Type |
Spring Return |
| Rotation |
Reversible CW/CCW |
| Stroke Degree |
95 Degrees |
| Running Time |
Less Than 75 Seconds |
| Fail Safe Running Time |
Less Than 25 Seconds |
| Power Consumption Running |
5 W |
| Power Consumption Holding |
2.5 W |
| Power Rating |
7 VA |
| Electrical Connection |
Hardwired Cable |
| Shaft Diameter Compatibility |
3/8 in to 1/2 in Round |
| Housing Material |
Galvanized Steel |
| NEMA Rating |
NEMA 2 |
| IP Rating |
IP54 |
| Communication Protocols |
BACnet IP, Modbus, MP-Bus |
| Minimum Operating Temperature |
-22°F |
| Maximum Operating Temperature |
122°F |
| Plenum Rating |
Plenum Rated |
| Application |
HVAC Dampers |
| Weight |
3.2 lb |
Information About LF24-US
The LF24-US is a low-voltage damper actuator manufactured by Belimo for HVAC airflow control and building automation applications. Designed with a spring return fail-safe system, the actuator automatically returns dampers to their default position in less than 25 seconds during power interruptions. The unit supports BACnet IP, Modbus, and MP-Bus compatibility, allowing integration into advanced building management systems and automation networks. Built with a galvanized steel housing and IP54/NEMA 2 protection ratings, the actuator is suitable for commercial plenum-rated installations and operates within temperatures ranging from -22°F to 122°F.
Key Features:
- Spring Return Fail-Safe: Automatically returns dampers to the safe position during power loss.
- 35 Inch-Lb Torque Output: Provides reliable damper operation for HVAC airflow systems.
- 24V AC/DC Operation: Compatible with low-voltage building automation and control circuits.
- Reversible CW/CCW Rotation: Supports flexible actuator mounting orientations.
- 95-Degree Stroke Range: Enables precise damper positioning and airflow modulation.
- BACnet and Modbus Compatible: Integrates with modern building automation systems.
- IP54 and NEMA 2 Rated: Protects internal components in commercial HVAC environments.
- Plenum Rated Construction: Suitable for installation in plenum air handling spaces.
The LF24-US delivers the reliability and precision required for commercial HVAC damper control and building automation applications.
