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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
  • LF Series Documentation
    LF Series Installation Instructions
    Model # (Description) Power Supply Control Input Torque Auxiliary Switch Currency List Price
    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 USD 383.00
    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° USD 443.00
    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 USD 474.00
    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° USD 534.00
    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 USD 346.00
    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 USD 421.00
    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° USD 481.00
    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 USD 537.00
    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 USD 537.00
    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 USD 537.00
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