TFB120-S

Description:

For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturers specifications. Control is On/Off from an auxiliary contact, or a manual switch. The actuator is mounted directly to a damper shaft from 1/4 up to 1/2 in diameter by means of its universal clamp, 1/2 shaft centered at delivery. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.

The TF-S versions 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

Features:

• Torque: 22in-lb [2.5Nm]
• Power Supply: 100…240 VAC, -15% / +10%, 50/60 Hz
• Angle of Rotation: 95
• Direction of Rotation (Fail-Safe): Reversible with cw/ccw mounting
• Shaft Diameter 1/4…1/2″ round centers on 1/2″
• Actuator Type: Spring return
• Auxiliary Switches:1 x SPDT, 3 A resistive (0.5 A inductive) @ AC 250 V, adjustable 0…95
• Degree of Protection: IP42, NEMA2, ULEnclosureType2
• Running Time (Fail-safe):<25s
• Running Time (Motor): 75s

Accessories:

• BelimoWTF US Mountng Linkage to TF actuator

Also See:

• TFB120 Spring Return Actuator
• TFB24-SR-SSpring Return Actuator

Resources:

• Belimo TFB120-S Spring Return Actuator Technical Literature
• TF Spring Return Actuator Installation Instructions