Honeywell Damper Actuator Spring Return, Fast-Acting, Two-Position, 175 in-lb (20 Nm), 120 VAC, 2 Aux. Switches, for Fire and Smoke Dampers

Honeywell MS4120F1204 Fast-Acting, Two-Position Actuator is a line volt (120V), 175 lb-in., spring return direct coupled actuator (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:
Integral spring return ensures level of return torque
Fifteen-second spring return timing
No special cycling required during long-term holding
No audible noise during holding
Patent pending design eliminates need for limit switches to reduce power consumption
Ninety-five degree angle of rotation
Actuator holds rated torque at reduced power level
Die-cast aluminum housing
Housing design allows flush mounting to damper
Designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories Inc. UL555S ratings up to 350 F
Models available with SPST position-indicating switches (7 degree, 85 degree stroke)
Self-centering shaft adapter, 3mm crank ( Manual)
Two integral 3/8 in. flexible conduit connections