BELIMO LF120-S Spring Return Actuator
LF120-S
Description:
For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifications. Control is On/Off from an auxiliary contact or a manual switch. The actuator is mounted directly to a damper shaft from 3/8” up to 1/2” in diameter by means of its universal clamp, 1/2” shaft centered at delivery. For shafts up to 3/4” use K6-1 accessory. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft
The LF120-S US version are provided with one built-in auxiliary switch. This SPDT switch is provided for safety interfacing or signaling, for example, for fan start-up. The switching function is adjustable between 0° and 95°.
Specifications:
- Actuator Type: Spring return
- Angle of Rotation: 95
- Control Type: On/Off
- Degree of Protection: IP54, NEMA 2, UL Enclosure Type 2
- Direction of Rotation (Fail-Safe): Reversible with cw/ccw mounting
- Electrical Connection: cable
- Power Consumption (Holding): 3.5 W
- Power Consumption (Running): 5.5 W
- Running Time (Fail-safe): <25 s
- Running Time (Motor): 75 s
- Safety Function: YES
- Shaft Diameter: 3/8...1/2" round, centers on 1/2"
- Torque: 35 in-lb [4 Nm]
- Voltage AC/DC: AC 120 V
- Auxiliary switch: 1 x SPDT, 3 A resistive (0.5 A inductive) @ AC 250 V, adjustable 0...95°
Also See:
Resources:
-
Belimo LF120-S Spring Return Actuator Technical Litertaure
- Belimo LF Spring Return Actuator Installation Instructions
