LF Series - Spring Return Damper Actuators Belimo

Torque 35 in-lbs [4 Nm]
Damper Area up to 8.5 sq. ft

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Symbol Belimo Americas
Profile: Manufacturer
Headquarters: US
Establishment date: 1975
Business area: the United States, Canada, Brazil, Latin America and the Caribbean
Capital group: Belimo Holding AG
Warranty: 5 years
Assortment: Damper actuators, Control valves
LF120 US - 1
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LF120-S US - 1
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LF230 US - 1
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LF230-S US - 1
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LF24 US - 1
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LF24-3 US - 1
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LF24-3-S US - 1
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LF24-ECON-R03 US - 1
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LF24-ECON-R10 US - 1
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LF24-MFT US - 1
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LF24-MFT-20 US - 1
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LF24-MFT-S US - 1
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LF24-MFT-S-20 US - 1
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LF24-S US - 1
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LF24-SR US - 1
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LF24-SR-E US - 1
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LF24-SR-S US - 1
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LFC24-3-R US - 1
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LFC24-3-S US - 1
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Product descritipion

Spring Return Damper Actuators

  • Comprehensive torque offering (22 in-lbs to 270 in-lbs) over a vast selection of actuators for a wide range of applications.
  • True mechanical spring return, providing reliable fail-safe.
  • Manual override crank eases installation (all EF, AF and NF series only).
  • Low power consumption provides higher efficiency and smaller transformer sizing.
  • Minimum torque guaranteed over entire specified operating range, no loss in performance due to temperature or supply voltage.
  • MFT is available in all spring return actuators, giving the user the flexibility to customize and
    adapt a single actuator to various controllers and applications.

Applications

Belimo actuators are designed for use in a wide variety of HVAC damper applications. With our comprehensive torque range and the ability to direct mount on standard damper shafts or jackshafts, solutions are available for control dampers, air handlers, economizer units, VAV terminal units, fan coil units, fan shutters and unit ventilators.


35 in-lbs (LF Series)

The LF spring return actuators provide true spring return operation for reliable fail-safe application and positive close off on air tight dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator.
35 in-lbs [4 Nm}
Approximately 8.5 square feet
Run time 40...150 seconds
Spring Return <25 seconds

 

Model # (Description) Power Supply Control Input Torque Auxiliary Switch
LF120 US 
Damper Actuator,35 in-lb,Spring Return,120V,On/Off
120 VAC ± 10%, 50/60 Hz On/Off 35 in-lbs [4 Nm] minimum  
LF120-S US 
Damper Actuator,35 in-lb,Spring Return,120V,On/Off
120 VAC ± 10%, 50/60 Hz On/Off 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°
LF230 US 
Damper Actuator,35 in-lb,Spring Return,230V,On/Off
230 VAC ± 10%, 50/60 Hz On/Off 35 in-lbs [4 Nm] minimum  
LF230-S US 
Damper Actuator,35 in-lb,Spring Return,230V,On/Off
230 VAC ± 10%, 50/60 Hz On/Off 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°
LF24 US 
Damper Actuator,35 in-lb,Spring Return,24V,On/Off
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% On/Off 35 in-lbs [4 Nm] minimum  
LF24-3 US 
Damper Actuator,35 in-lb,Spring Return,24V,On/Off/Floating Point
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% On/Off, Floating Point 35 in-lbs [4 Nm] minimum  
LF24-3-S US 
Damper Actuator,35 in-lb,Spring Return,24V,On/Off/Floating Point
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% On/Off, Floating Point 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°
LF24-ECON-R03 US 
Damper Actuator,35 in-lb,Spring Return,24V,Modulating
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% 3 kΩ Type 10 Thermistor 35 in-lbs [4 Nm] minimum  
LF24-ECON-R10 US 
Damper Actuator,35 in-lb,Spring Return,24V,Modulating
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% 10 kΩ Type 10 Thermistor 35 in-lbs [4 Nm] minimum  
LF24-MFT US 
Damper Actuator,35 in-lb,Spring Return,24V,MFT
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% MFT (Configurable) 35 in-lbs [4 Nm] minimum  
LF24-MFT-20 US 
Damper Actuator,35 in-lb,Spring Return,24V,Modulating
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% 6-9 VDC 35 in-lbs [4 Nm] minimum  
LF24-MFT-S US 
Damper Actuator,35 in-lb,Spring Return,24V,MFT,SW
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% MFT (Configurable) 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°
LF24-MFT-S-20 US 
Damper Actuator,35 in-lb,Spring Return,24V,Modulating,SW
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% 6-9 VDC 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°
LF24-S US 
Damper Actuator,35 in-lb,Spring Return,24V,On/Off
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% On/Off 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°
LF24-SR US 
Damper Actuator,35 in-lb,Spring Return,24V,Modulating
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% 2-10 VDC 35 in-lbs [4 Nm] minimum  
LF24-SR-E US 
Damper Actuator,35 in-lb,Spring Return,24V,Modulating
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% 2-10 VDC 35 in-lbs [4 Nm] minimum  
LF24-SR-S US 
Damper Actuator,35 in-lb,Spring Return,24V,Modulating,SW
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% 2-10 VDC 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°
LFC24-3-R US 
Damper Actuator,35 in-lb,Spring Return,24V,On/Off/Floating Point
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% On/Off, Floating Point 35 in-lbs [4 Nm] minimum  
LFC24-3-S US 
Damper Actuator,35 in-lb,Spring Return,24V,On/Off/Floating Point
24 VAC ± 20%, 50/60 Hz, 24 VDC ± 10% On/Off, Floating Point 35 in-lbs [4 Nm] minimum 1 x SPDT, 3A resistive (0.5A inductive) @ 250 VAC, adjustable 0° to 95°

 

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