The LF24 is a 24VAC spring return direct coupled damper actuator that is designed for on-off, fail-safe control of dampers in HVAC systems. Actuator sizing . Belimo Aircontrols (USA), Inc. LF24 (-S) US. On-off, spring return failsafe, 24 V. ®. Torque min. 35 in-lb, for control of air dampers. Application. For on-off, fail-safe. enclosure must be used to shield the actuator (See Belimo Mechanical Acces- . The LF24, modulating actuators (LFSR US, LF US, LFMFT US) are.

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Visual indicator, 0 to 95 0 is spring return position. Power consumption is reduced in holding mode. The actuator is installed directly on the air damper shaft. A 2 to 10 VDC feedback signal is provided for position indication or master-slave applications. Take advantages of registration: The actuator operates in response to a 2 to 10 VDC, or with the addition of a W resistor, a 4 to 20 mA control input from an electronic controller or positioner.

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LF24 : Belimo Electric Damper Actuator

Add to a new shopping list. The ASIC monitors and controls the brushless DC motors rotation and provides a digital rotation sensing function to prevent damage to the actuator in a stall condition.

Electronic throughout 0 to 95 rotation. Create an account Forgot Password? Remember me I forgot my password. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator. Nm Direction of rotation. Actuator Customization characters remaining.

The actuator is equipped with a return spring, which moves the damper to its operating position while tensioning the return spring at the same time. Personalization If needed, use the space below to type in any additional actuator configuration required for your order: The angle of rotation is adjusted by mechanical end stops. For controlling air dampers with cross section up to 0. Direction of Rotation motor. For proportional modulation of dampers in HVAC systems.

A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft. Reversible with built-in switch.


We ship to Canada. The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuators exact fail-safe position. Products saving in a binding to the projects.

Direction of Rotation fail-safe. The electric actuator is provided with a 4 Nm actuating torque and an overload protection.

Hz Ingress protection rating. Actuator sizing should be done in accordance with the damper manufacturers specifications.

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Belimo Lf24-sr US Spring Return Actuator LF24SRUS

This SPDT switch is provided for safety interfacing or signaling, for example, for fan start-up. The switching function is adjustable between 0 and The LF series actuators provide true spring return operation for reliable fail-safe application and positive close-off on air tight dampers.

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