Belimo Aircontrols (USA), Inc. TFB24 Spring, 22in-lb, On/Off, 24V

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List Price$407.00
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Spring, 22in-lb, On/Off, 24V

ApplicationFor 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 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
Weight1.4 lb [0.6 kg]
Servicingmaintenance free
Power Supply24 VAC � 20%, 50/60 Hz, 24 VDC � 10%
Power Consumption Running2 W
Power Consumption Holding1.3 W
Transformer Sizing5 VA (class 2 power source)
Electrical Connection3 ft [1 m], 18 GA appliance cable with 1/2? conduit connector
Overload Protectionelectronic throughout 0� to 95� rotation
Angle of Rotationmax. 95�, adjustable with mechanical stop
Direction of Rotation (Motor)reversible with CW/CCW mounting
Running Time (Motor)<75 sec
Ambient Temperature Range-22�F to +122�F [-30�C to +50�C]
Storage Temperature Range-40�F to +176�F [-40�C to +80�C]
HousingNEMA 2, IP42, UL enclosure type 2
Agency ListingscULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EC
Noise Level (Motor)<50 dB (A)
Quality StandardISO 9001
Direction of Rotation (Fail-Safereversible with CW/CCW mounting
Position Indicationvisual indicator, 0� to 95� (0� is full spring return position)
Running Time (Fail-Safe)<25 sec @ -4�F to 122�F [-20�C to 50�C], < 60 sec @ -22�F [-30�C]
Noise Level (Fail-Safe)<62 dB (A)
Housing MaterialUL94-5VA
Electrical protectionactuators are double insulated
Humiditymax. 95% RH non-condensing
Shaft Diameter1/4? to 1/2? round, centers on 1/2?
Torque22 in-lbs [2.5 Nm] minimum
OperationThe TF series 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. The TF series provides 95� of rotation and is provided with a graduated position indicator showing 0� to 90�. The actuator may be stalled anywhere in its normal rotation without the need of mechanical end switches. Power consumption is reduced in holding mode.

Product Family

Model NumberDecriptionManufacturerPriceAvail. Qty 
TFB24 Spring, 22in-lb, On/Off, 24V Belimo Aircontrols (USA), Inc. $183.15 211    Add To Cart

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