Belimo EFB120 Damper Actuator 270 in-lb Spring return AC 100/240V DC 100/125V

Belimo EFB120 Damper Actuator, On/Off, 120 VAC, spring return (fail-safe).
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 up to 1.05” in diameter by means of its universal clamp. A crank arm and several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft. Maximum of two EF’s can be piggybacked for torque loads of up to 540 in-lbs. Minimum 3/4” diameter shaft and parallel wiring.
Belimo EFB120 Operation – The EF..120 series actuators provide true spring return operation for reliable failsafe application and positive close off on air tight dampers. The spring return system provides constant torque to the damper with, and without, power applied to the actuator. The EF..120 series provides 95° of rotation and is pro