Belimo LFC24-3-R Actuator

The Belimo LFC24-3-R is a high-torque spring return actuator engineered for reliable control of dampers in HVAC systems requiring fail-safe operation. Operating on a 24VAC/DC power supply, this economizer actuator delivers 35 in-lb of torque, making it a standard choice for contractors managing small to medium-sized atmospheric control dampers. The unit utilizes a 3-point floating control signal, providing precise positioning for multi-stage air handling applications. With a 90-second motor run time and a robust mechanical spring return that engages in under 25 seconds upon power loss, it ensures the system defaults to a safe position during outages. Designed for easy installation, the LFC24-3-R features a reversible mounting design (right-hand or left-hand) and a universal shaft clamp that accepts standard 3/8-inch to 1/2-inch round or square shafts. This Belimo damper motor is the go-to field replacement for NEMA 2 rated environments where consistent cycle performance is non-negotiable.

• Fail-Safe Reliability: Mechanical spring return ensures positive closure or opening during power interruptions to protect coils and equipment.
• Versatile Power Compatibility: Functions on both 24V AC and 24V DC circuits, simplifying inventory for service technicians.
• Precise Airflow Control: Employs 3-point floating control logic for accurate damper modulation and improved building efficiency.
• Compact Form Factor: The low-profile design allows for installation in tight mechanical closets and limited-clearance plenum spaces.
• Field-Proven Durability: Rated for over 60,000 cycles, minimizing callbacks and maintenance labor on commercial job sites.

Common Contractor Questions:

What is the maximum torque rating for the LFC24-3-R?
This actuator provides 35 in-lb [4 Nm] of torque, suitable for dampers up to approximately 8.5 square feet, depending on the seal type and air velocity.

Can this actuator be used in place of a 2-position model?
No, the LFC24-3-R is designed for 3-point floating control. For simple on/off applications, a standard 2-position spring return model should be used to ensure proper signal response.

Does this unit include an auxiliary switch?
The standard LFC24-3-R does not include built-in auxiliary switches. If end-switch feedback is required for fan interlocks or status monitoring, verify the specific sub-model or use external switch kits.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.