LF120-S US | Belimo 35 In Lb Spring Return On Off Damper Actuator 120V

Belimo · Motors & Motion

Description  The Belimo LF120-S US is a compact spring return damper actuator delivering 35 in-lb of torque for reliable on/off airflow control. It operates on a wide AC voltage range and provides dependable fail-safe positioning for HVAC damper applications.     Technical Specifications  Condition New/Never Used Surplus Brand Belimo Category Actuators & Dampers Part Number LF120-S US Subcategory Damper Actuators Actuator Type Spring return, on/off Nominal Torque 35 in-lb (4 Nm) Nominal Voltage AC 100…240 V Nominal Frequency 50/60 Hz Voltage Range AC 85…264 V Power Consumption (Running) 3.5 W Power Consumption (Rest) 2 W Transformer Sizing 6.5 VA Auxiliary Switch 1 × SPDT, adjustable 0…95° Angle of Rotation Max. 95° Running Time 75 s / 90° Fail-Safe Running Time <25 s Electrical Connection Two 18 GA cables, 3 ft, 1/2" NPT Degree of Protection IP54 / NEMA 2 / UL Type 2 Ambient Temperature -22…122°F (-30…50°C) Housing Material Galvanized steel Weight 3.6 lb (1.6 kg)   Information About LF120-S US The LF120-S US is part of Belimo’s compact spring return damper actuator range engineered for dependable on/off control in HVAC air distribution systems. It features a wide-range AC power supply, allowing direct connection to 120 V and other line-voltage control circuits without additional transformers. The actuator incorporates a mechanical spring return to drive the damper to a defined safety position during power loss, with reversible fail-safe direction through CW/CCW mounting. Its double-insulated construction, electronic overload protection, and maintenance-free design support long-term, reliable operation. Key Features Spring Return Fail-Safe Operation: Integrated spring mechanism automatically drives the damper to a predefined safety position when power is lost. Wide AC Line Voltage Input: Operates from AC 100…240 V, simplifying installation in line-voltage HVAC control systems. Reliable On Off Control Function: Designed for straightforward open and close damper operation with consistent response. Integrated Auxiliary Switch: One adjustable SPDT switch provides end-position indication or interlock signaling for system coordination. Configurable Direction Of Motion: Motor direction selectable by switch, with fail-safe direction reversible through CW/CCW mounting. Durable Mechanical Construction: Galvanized steel housing and double-insulated electronics enhance durability and safety. Maintenance-Free Performance: Electronic overload protection and sealed design support continuous operation without routine servicing. The LF120-S US delivers the reliability and precision required for safe, dependable on/off damper control in commercial HVAC installations.

Brand: Belimo · Category: Motors & Motion

Key features

• Spring Return Fail-Safe Operation: Integrated spring mechanism automatically drives the damper to a predefined safety position when power is lost.
• Wide AC Line Voltage Input: Operates from AC 100…240 V, simplifying installation in line-voltage HVAC control systems.
• Reliable On Off Control Function: Designed for straightforward open and close damper operation with consistent response.
• Integrated Auxiliary Switch: One adjustable SPDT switch provides end-position indication or interlock signaling for system coordination.
• Configurable Direction Of Motion: Motor direction selectable by switch, with fail-safe direction reversible through CW/CCW mounting.
• Durable Mechanical Construction: Galvanized steel housing and double-insulated electronics enhance durability and safety.
• Maintenance-Free Performance: Electronic overload protection and sealed design support continuous operation without routine servicing.

Specifications

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