BELIMO TFB24-S Damper Actuator On/Off, Spring Return, 24 VAC/DC, Aux.Switch

Description

BELIMO TFB24-S Damper Actuator (new).  Free Shipping
Application
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 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.
Operation
The 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. 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°.Safety Note: Screw a conduit fitting into the actuator’s bushing. Jacket the actuator’s input and output wiring with suitable flexible conduit. Properly terminate the conduit in a suitable junction box.
Technical Data
97395
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)Shaft Diameter1/4” to 1/2” round, centers on 1/2”Electrical Connection(2) 3 ft [1 m], 18 GA appliance cables with 1/2” conduit connectorsOverload Protectionelectronic throughout 0° to 95° rotationElectrical Protectionactuators are double insulatedAngle of Rotationmax. 95°, adjustable with mechanical stopTorque22 in-lbs [2.5 Nm] minimumDirection of Rotation (Motor)reversible with CW/CCW mountingDirection of Rotation (Fail-Safe)reversible with CW/CCW mountingPosition Indicationvisual indicator, 0° to 95° (0° is full spring return position)Running Time (Motor)<75 secRunning Time (Fail-Safe)<25 sec @ -4°F to 122°F [-20°C to 50°C], < 60 sec @ -22°F [-30°C]Humiditymax. 95% RH non-condensingAmbient 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 2Housing MaterialUL94-5VAAgency Listings†cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02, CE acc. to 2004/108/EC and 2006/95/ECNoise Level (Motor)<50 dB (A) Noise Level (Fail-Safe)<62 dB (A) Servicingmaintenance freeQuality StandardISO 9001Weight1.5 lb [0.7 kg]Auxiliary Switch1 x SPDT, 3A resistive (0.5A inductive) @ 250
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