Damper Actuator Two Position, W/ Spring Return and Aux. switches for Fire and Smoke Applications (175 lb-in)

Honeywell Damper Actuator MS4120F1204.The Honeywell Fast-Acting, Two-Position Actuators are line volt (120V), 80 lb-in., spring return direct coupled actuators (DCA) for Fire and Smoke dampers (on/off control). The actuator accepts an on/off signal from a single-pole, single-throw (SPST) controller. Reversible mounting allows actuator to be used for either clockwise (cw) or counterclockwise (ccw) spring rotation.Features:80 lb-in. (5.9 N•m) minimum driving torque at 350 F (176 C)Reversible mounting facilitates use in either clockwise (cw) or counterclockwise (ccw) spring rotationIntegral spring return ensures level of return torqueFifteen-second spring return timingNo special cycling required during long-term holdingNo audible noise during holdingPatent pending design eliminates need for limit switches to reduce power consumptionModels available for 24, 120, and 230 VacNinety-five degree angle of rotationActuator holds rated torque at reduced power levelDie-cast aluminum housingHousing design allows flush mounting to damperDesigned to operate reliably in smoke control systems requiring Underwriter’s Laboratories Inc. UL555S ratings up to 350 FModels available with SPST position-indicating switches (7 degree, 85 degree stroke)