MSxx04F 30 Lb-In

MSxx04F 30 Lb-In. And MSxx09F 80 Lb-In. Fire And SmokeDamper Actuators
The MS4104, MS4109, MS4604, MS4609, MS8104 and MS8109 are spring return direct coupledactuators (DCA) for Fire and Smoke dampers.
Overview

The MS4104, MS4109, MS4604, MS4609, MS8104 and MS8109 Fast-Acting, Two-Position Actuators are spring return directcoupled 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 & Benefi ts:
30 lb-in. (3.4 Nm) or 80 lb-in. (9 Nm) minimum driving torque at 350°F (176°C)
Reversible mounting facilitates use in either clockwise (cw) or counterclockwise (ccw) spring rotation
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-fi ve degree angle of rotation
Actuator holds rated torque at reduced power level
Die-cast aluminum housing
Housing design allows fl ush mounting to damper
Models available with SPST position-indicating switches (7°, 85° stroke).
Certifi cations:
Designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories Inc UL555S ratings up to 350°F
Non-UL marked models available