TFB24-SR | Belimo | Damper ActuatorTFB24 SR Damper Actuator, proportional , 24V , spring return (fail safe) For fail safe, modulating control of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturers specifications. 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

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and 0 to 5/10 VDC output can be configured via local DIP switches

but eliminate entirely the need to span the instruments during calibration

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