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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Direction of Rotation fail-safe.


You may not enter more than characters for ‘Actuator Customization’. Personalization If needed, use the space lff24 to type in any additional actuator configuration required for your order: Power consumption is reduced in holding mode.

The spring return system provides consistent torque to the damper with, and without, power applied to the actuator.

The switching function is adjustable between 0 and Actuator Customization characters remaining Quantity: Electronic throughout beli,o to 95 rotation. Add to a new shopping list. Welcomeyou have 0 items in your cart Sign-up View Cart Checkout.


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. Reversible with built-in switch. Actuator Customization characters remaining. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches.

The LF series actuators provide true spring return operation for reliable fail-safe application and positive close-off on air tight dampers.

The microprocessor provides the intelligence of24 the ASIC to provide a constant rotation rate and to know the actuators exact fail-safe position.

Quantity Discounts Quantity Amount 5 to This SPDT switch is provided for safety interfacing or signaling, for example, for fan start-up. Create an account Forgot Password? Technical Data Sheet Installation Manual.

Visual indicator, 0 to 95 0 is spring return position.

LF24 – Belimo Spring-return actuator 4 Nm, 75 s, 95° AC / DC 24 V, Open/Close iACS

We ship to Canada. Actuator sizing should be done in accordance with the damper manufacturers specifications.


A 2 to 10 VDC feedback signal is provided for position indication or master-slave applications. Direction of Rotation motor.

The LF series provides 95 of rotation and is provided with a graduated position indicator showing 0 to For proportional modulation of dampers in HVAC systems.

You will be prompted to enter your password on the next page. Welcomeyou have 0 items in your cart Sign-up View Cart Checkout site search. Product Reviews Rate This Product: The actuator operates nelimo 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.

A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.