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 motor. Create an account Lf4 Password? Quantity Discounts Quantity Amount 5 to Reversible with built-in switch. Welcomeyou have 0 items in your cart Sign-up View Cart Checkout. The LF series provides 95 of rotation and is provided with a graduated position indicator showing 0 to Actuator Customization characters remaining Quantity: This SPDT switch is provided for safety interfacing or signaling, for example, for fan start-up. Actuator Customization characters remaining.


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

The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches. Direction of Rotation fail-safe. Actuator sizing should be done in accordance with the damper manufacturers specifications.

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. Add to a new shopping belimp. Product Reviews Rate This Product: Technical Data Sheet Installation Manual.

The switching function is adjustable between 0 and For proportional modulation of dampers in HVAC systems. Welcomeyou have 0 items in your cart Sign-up View Cart Checkout site search.

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

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

Personalization If needed, use the space below to type in any additional actuator configuration required for your order: The ASIC monitors and controls the brushless DC motors rotation and provides a digital rotation sensing function to prevent damage to the belimi in a stall condition.


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

You will be prompted to enter your password on the next page. You may not enter more than characters for ‘Actuator Customization’. The microprocessor provides the intelligence to the ASIC to provide a constant rotation rate and to know the actuators exact fail-safe position.

Electronic throughout 0 to 95 rotation.

The Of24 series actuators provide true spring return operation for reliable fail-safe application and positive close-off on air tight dampers. Visual indicator, 0 to 95 0 is spring return position.