Honeywell – MS4120F1006/B MSxx20F 175 lb-in. Fire and Smoke Damper Actuators

The MS4120F, MS4620F, MS8120F Fast-Acting, Two-Position Actuators are spring return direct coupled actuators (DCA) for on/off damper 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 & Benefits:

175 lb-in. (20 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

Stainless steel internal spring

Fifteen-second spring return timing

No special cycling required during long-term holding

No audible noise during holding

Models available for 24, 120, and 230 Vac applications

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

Patented Self-Centering Shaft Adapter (SCSA). Patent Number: US 6,505,991

Certifications:

Designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories Inc. UL555S ratings up to 350°F.

Honeywell MS4120F1006/B — The MS4120, MS4620, and MS8120 are spring return direct coupled actuators (DCA) for Fire and Smoke dampers. Discontinued by Honeywell — no longer in the current range. PartnerPLC sources new, surplus and discontinued Honeywell parts — request a quote for price, condition and lead time.

Specifications